![]() In InDesign, select File > Export to save a document as a PDF. The Save as PDF feature is available in Word, PowerPoint, Excel, Safari, Internet Explorer, Netscape, FirstClass, Fireworks, Dreamweaver, and Photoshop. Or, click on the first icon on the Adobe tool bar. pdf extension) to the resulting document, then click Save. In the next window, make sure the save location is set to Desktop. Open your document in Word, Excel or PowerPoint, go to File > Print. To convert your document simply select Adobe PDF ->Convert to PDF or use the first of the three PDF icons appearing in the new PDFMaker toolbar.ġ. You will notice that after installing Acrobat 8 new tools and menu selections have appeared. Open your document in Word, Excel, PowerPoint, or Internet Explorer. Download free Adobe Acrobat Reader software for your Windows, Mac OS and Android devices to view, print, and comment on PDF documents. Once you have installed Adobe Acrobat, use the following instructions to convert a Microsoft Office document to a PDF fileĪdditional Tips on how to edit documents within Adobe Acrobat. File Size: 35. ![]() (You can create a PDF file on a Mac with OS X using the Print dialog box, but to edit a PDF, you need the full version of Adobe Acrobat. Acrobat Reader X 10.0.0 43,799 Downloads Acrobat Reader X 10.0.00out of 5based on 0ratings. pdf file you must install the full Adobe Acrobat Professional edition. By clicking the Download Acrobat Reader button, you acknowledge that you have read and accepted all of the Terms and Conditions. However, if you want to create and/or edit a. Adobe Acrobat Reader DC Download Free PDF viewer for Windows, Mac OS, Android The world’s most trusted free PDF viewer Please select your operating system and language to download Acrobat Reader. The Reader will start automatically whenever you want to look at a PDF file. To view and use the files, you need the free Adobe Acrobat Reader, which is on all computers on campus. A PDF can be viewed around the world and is a universal file format that preserves the fonts, images, graphics, and layout of any source document, regardless of the application and platform used to create it. The link to download Adobe Reader DC for Windows XP and Vista is listed below.Adobe Acrobat Reader DC 11 supports the following versions of Windows:By. Apache 2.2 STIG Windows - Ver 1, Rel 13 Apache 2.2 STIG Windows - Ver 1, Rel 13. ![]() moved from Installing, Updating, & Subscribing to Acrobat to Acrobat Reader Upvote Translate Report Appleman76 AUTHOR New Here, There is no version of Vista, and the XP version does not work with Vista. PDF files are created using Adobe Acrobat, or similar products. Adobe Acrobat Reader DC Continuous Track STIG - Ver 2, Rel 1 Adobe. Adobe Acrobat Reader DC Install for all versions untick any unwanted tag-along-ware. PDF (Portable Document Format) is a file format that captures all the elements of a printed document as an electronic image that you can view, navigate, print, forward, or upload to the web.
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![]() These islands, known as the Spice Islands, were the source of the rapidly expanding spice trade and a huge source of financial profit. However, the geography of the map has particular importance to Europeans of the 16th century. The highly decorative map features two mermaids unconcerned about a nearby sea monster wrecking a ship, based on Diego Guiterrez s map of America. Copper engraved map, from Ortelius Theatrum Orbis Terrarum, hand coloured, strap work title cartouche, heraldic crest of Portugal, ocean stippled and embellished with mermaids, sea monsters and ships, central vertical fold, good margins, French text on verso, overall size 405 x 550mm, Antwerp, 1572 An attractive example of Ortelius map covering the Malay Archipelago, Persia, India, China, Japan, the coast of New Guinea, and the coast of North America. Koeman/Meurer: 48 Karrow: 1/68, vdKrogtAN: 8400:31 van den Broecke Ort 166. The Portuguese coat of arms appears at the upper left corner, reflecting Portuguese supremacy in the region. Two mermaids, taken from Diego Gutierrez's map of America, frolic below. ![]() In the sea to the south of America, a ship is being attacked by two whales, causing its cargo of barrels to float away. The mythical city of Quivira is marked on the coast of California. In the Sunda Islands, Sumatra and Java are oversized in the Philippines Luzon is omitted. The geography is based on Gerard Mercator's 1569 world map. Upper right, the Pacific Northwest coast of America appears. ![]() This is a mis-transcription of the land Marco Polo called "Lucach", or "Locach". First published in 1570, Ortelius's map is one of the earliest European maps of Southeast Asia, and affords a glimpse of the vast southern continent with the inclusion of the peninsula of "Beach, pars continentis Australis". With a glimpse of the great south continent Engraved map, French text on verso. Lucky for you, FotoJet Designer for PC has easy approaches to design various e-cards according to different needs. It’s never easy to work out a classic card with some traditional design software like Photoshop. If it’s April Fool, Halloween, Easter or Xmas, many of us will expect a festival card for blessing or wishing good luck. Just follow your heart, you can have your art graphic in the end. Anyway, it’s way straightforward to navigate. ![]() Select an element, the software will show you changeable items, like alignment, layer, style, effect, etc. Mouse click any text on the canvas, you can then input any words. When you find out a template that meets your requirements, give it a click, and you will be ready to design it. Provided that it gives you a long list of options, you can narrow down the options by using the scroll down button, which sorts those templates to a more detailed category. Posters are used almost everywhere: big mall, street, bakery, coffee house, bookshop, supermarketdesignTo make a good-looking poster with FotoJet Designer for PC, you just need to go > and find your favourite one. For marketing purpose, you’d like scroll down to “Marketing” part and view its options. It has a “Popular” section listing the most used features from the big data. It’s equipped with over 900 design templates, all of which are well categorized and easy to navigate. FotoJet Designer for PCįotoJet Designer for PC is designed for creating e-cards, flyers, covers, postcards, invitations, Facebook covers, YouTube channel arts, email header, etc. With it, it will become easy to level up photos without any hassle. Hence, let’s check the well-reviewed graphics processor – FotoJet Designer for PC. For a small business, it’s beyond the reach of just hiring a professional designer, not speaking of employing a whole team. How the photos look has an immense influence on the success of a commercial campaign, that’s why those big companies, like Apple & Microsoft, maintain a design team to create appealing posters, right logos as well as website photos. ![]() A few things to consider however, the image needs to be less than 1MB in size and once embedded it cannot be rotated although it can be resized. Binding or embedding a CAD drawing is only a right click menu away!īy using Windows clipboard technology, it is possible to embed an image into an AutoCAD DWG file using the copy to clipboard and paste from clipboard function. Therefore it is possible that when files are issued, error messages about missing files can occur.įig. However, unlike referenced CAD files, image attachments have no bind or embed option. Please note that not all Autodesk products participate in graphic hardware certification.A common question that is asked by users is whether images can be embedded into a drawing, such as a company logo or graphic? Many users are familiar with the image attach option, which makes use of the External Reference environment. ![]() Autodesk tests graphics hardware and drivers for a number of Autodesk products. See Also:Ĭertified hardware for AutoCAD – Use this tool to find recommended graphics hardware and drivers. If you are authorized to virtualize and elect to do so, you assume all risks associated with such use, including, but not limited to incompatibility between the product and third-party virtualization technology and/or your virtualization environment. Autodesk makes no representations, warranties or other promises related to use of any product in any virtualization environment or with any virtualization technology. Such information is offered solely for your convenience, on an “as is” basis, and may contain errors, inaccuracies, or may be incomplete. Autodesk may make available information regarding use of products in virtualized environments. Where virtualization is authorized, all conditions and limitations specified in the applicable terms and conditions apply. You may virtualize a product only if the applicable terms and conditions governing your access to and use of that offering expressly permit virtualization. Note: Not all Autodesk product offerings may be virtualized. Microsoft® Excel® Driver (*.xls, *xlsx, *.xlsm, *.xlsb) Microsoft Access database engine 2016 (English). Microsoft® Access® Driver (*.mdb, *.accdb) The FDO ODBC provider has been tested with corresponding versions of ODBC drivers that are shipped with the relevant supported operating systems version. This Provider requires ESRI licensed components to be installed on client system. Industry Models support the same Oracle versions as listed on the left.Įnterprise Edition and Standard Edition 2ĭEM, JPG2K, DTED, MrSID ®, ECW, PNG, ESRI ® Grid, TIFF, JPEG, ESRI ® ASCII Oracle Express, Standard, and Enterprise Editions Industry Models also support the versions of Microsoft SQL Server listed on the left. Microsoft SQL Server 2019 Standard and Enterprise Editions Microsoft SQL Server 2017 Standard and Enterprise Editions Microsoft SQL Server 2016 Standard and Enterprise Editions Microsoft SQL Server 2014 Standard and Enterprise Editions Recommended: Mac native installed graphics cardsĪPFS, APFS(Encrypted), Mac OS Extended (Journaled), Mac OS Extended (Journaled, Encrypted)ĪutoCAD Map 3D Additional Requirements (Windows Only) Requirements High Resolution: 2880 x 1800 with Retina Displayģ GB free disk space for download and installationĪpple-compliant Mouse, Apple-compliant Trackpad, Microsoft-compliant mouse Recommended: Apple Mac® models supporting Metal Graphics EngineĪpple Mac models with M series chip are supported under Rosetta 2 mode. ![]() System requirements for AutoCAD for Mac 2021 Aut oCAD for Mac 2021Īpple® macOS® Monterey v12 (requires Update 2021.2)Īpple macOS Big Sur v11 (requires Update 2021.1)īasic: Apple Mac Pro® 4.1, MacBook Pro® 5.1, iMac® 8.1, Mac mini® 3.1, MacBook Air®, MacBook® 5.1 In addition to operating systems supported for the application, the license server will run on Windows® Server 2012 R2, Windows Server 2016, and Windows Server 2019 editions. Primary login on workstations may be Netware or Windows. The license server and all workstations that will run applications dependent on network licensing must run TCP/IP protocol.Įither Microsoft® or Novell TCP/IP protocol stacks are acceptable. Recommended: 4 GB GPU with 106 GB/s Bandwidth and DirectX 11 compliant Resolutions up to 3840 x 2160 supported on Windows 10, 64-bit systems (with capable display card)īasic: 1 GB GPU with 29 GB/s Bandwidth and DirectX 11 compliant Multiple processors: Supported by the application See Autodesk’s Product Support Lifecycle for support information. System requirements for AutoCAD 2021 including Specialized Toolsets (Windows) AutoCAD including Specialized Toolsets (Windows)Ħ4-bit Microsoft® Windows® 8.1 and Windows 10. ![]() Outsmarting and outmaneuvering your opponent is the best way to win consistently, and this fine-tuning and micromanaging is where DLS really shines. ![]() Even Messi or Cristiano Ronaldo can’t carry the match all by themselves. Early on it’s smarter to consider how teammates work off each other’s strengths, covering your team's liabilities. It makes a huge difference whether you splurge on superstar players like Gareth Bale and Lionel Messi, or opt instead for Isco and Paulo Dybala. You’ll have to choose which players to prioritize when making up your team’s composition. What makes the experience more challenging (particularly in online matches) is that oftentimes the enemy players will have statistical advantages. Now smarter and more responsive to the player’s decisions, they are tactically driven, moving to counter your predicted moves. Since offline modes are increasingly popular, it was important that Developers First Touch Games improved the AI from previous versions. ![]() It holds its own next to PC and console competitors a rare thing for its free price tag. The graphics are consistently good, the animations are smooth, and it runs at a smooth frame rate, unfazed by the many customizations and team permutations at the player’s command. Despite being a mobile game, the simulator is surprisingly high quality. It’s all done to the beat of an exclusive soundtrack provided by The Luka State, Jack Wins, Sunset Sons, Vistas, and Only The Poets.Īt the heart of Dream League Soccer is, of course, the game itself. You can customize your team logo, choose its colors, and upgrade your stadium to whatever aesthetics you like. How your team looks is as much under your control as are the players who comprise it. The team you create provides the core of your journey, but with enough time, resources, patience, and victories under your belt, the game can expand into overarching control over a mighty soccer empire. Some of the biggest draws about DLS are its extensive customization and its expansive nature. Selecting your ideal players for your team is only the beginning. Winning these events can earn you unique medals and prizes. Depending on the style, these may play to your strengths or exploit one of your weaknesses. The game features regular events in the form of different tournament formats. Whether offline or online, you can work your way through the ranks, proving your team is the one to beat. See how they stack up in online matches against players from all around the world. Once you’re proud of the team you’ve built, it’s time to hit the field. For many players, this is the better mode as it can be played without any Internet connection. DLS is FIFPro licensed, so you can expect to go toe to toe with some of the best players in the world.įor the more casual player, there’s also an offline mode where you can compete with the AI and train up your team. For the competitive player, there are thousands of opponents online waiting to test you and your team’s mettle. With over 40 million downloads, Dream League Soccer is one of the most downloaded soccer game apps for Android, making it a fierce competitor for both FIFA and PES. ![]() ![]() OPTIONS FOR USING A CELL PHONE OR INTERNET DEVICE IN SOUTH AFRICAīuying a local prepaid SIM card, inserting it into your mobile or Internet device and operating on a top-up basis is one of the easiest and most convenient options (your phone must just be unlocked – check with your local service provider to make sure this is the case).Įspecially ideal for those who return to SA multiple times per year (like business people), this alternative allows you to keep your number forever as well as use your OWN phone with all your crazy apps, annoying ringtones and important contacts. At the bottom of this page, we’ve also answered some frequently asked questions about cell phone and Internet use in SA. To help you on your way, we’ve put together a guide to buying a prepaid SIM card (or just a data SIM), renting a local cell phone, putting your mobile on roam and more. What’s best for one person may not necessarily be ideal for another. While there’s a few different telecom options for travellers to SA, it’s important to understand the advantages and drawbacks of each. Staying in touch while on holiday or business in South Africa (SA) is far less complicated and expensive than it used to be, but, nonetheless, those unfamiliar with the local system and networks may still find keeping connected somewhat confusing. Using a Cell Phone while Overseas in South AfricaĮverything you need to know about calling internationally, chatting locally, buying a prepaid SIM card and cruising the Web ![]() ![]() But now it is clear that conda carries its own cuda version which is independent from the NVIDIA one. If both versions were 11.0 and the installation size was smaller, you might not even notice the possible difference. The CUDA Production installers include the CUDA Toolkit, CUDA samples, Nsight Visual Studio edition (for Windows) and Nsight Eclipse Edition (for Linux / Mac OS X), and are now available for on the CUDA Toolkit Download Page. The question arose since pytorch installs a different version (10.2 instead of the most recent NVIDIA 11.0), and the conda install takes additional 325 MB. Taking "None" builds the following command, but then you also cannot use cuda in pytorch: conda install pytorch torchvision cpuonly -c pytorchĬould I then use NVIDIA "cuda toolkit" version 10.2 as the conda cudatoolkit in order to make this command the same as if it was executed with cudatoolkit=10.2 parameter? Taking 10.2 can result in: conda install pytorch torchvision cudatoolkit=10.2 -c pytorch If you go through the "command helper" at, you can choose between cuda versions 9.2, 10.1, 10.2 and None. In other words: Can I use the NVIDIA "cuda toolkit" for a pytorch installation? Download Drivers NVIDIA > Drivers > GeForce Game Ready Driver GeForce Game Ready Driver Release Highlights Supported products Additional information Game Ready This new Game Ready Driver provides the best gaming experience for the latest new titles including Star Wars Jedi: Survivor and Dead Island 2. One of these questions:ĭoes conda pytorch need a different version than the official non-conda / non-pip cuda toolkit at Following the same process, after going through the middle rotor and left rotor, the letter is now transformed to letter into 'D' as it is passed to the reflector. The letter 'X' would then be linked to letter 'S' based on the internal wiring mapping determined by the ring setting. Instead, it is mapped to letter 'X' since 'X' has moved to the position where 'W' was. As a consequence, the letter 'W' is not mapped to letter 'W'. Every keystroke causes the right rotor to move down one position.At the static rotor the letter is simply passed to another rotor. The letter 'W' is the letter produced by the plugboard and it is now passed to the static rotor.The plugbaord swaps the letter 'E' to letter 'W' given that the plugboard setting pairs 'EW' (in the Figure above). The letter 'E' is entering into the plugboard.Consequent to one keystroke, the right most rotor is being advanced by one step. Suppose that the letter 'E' is pressed on the keyboard.So that different settings would uniquely generate different overall encryption.Ģ. To make things even more complicated, different settings can be applied to every element of the Enigma machine ![]() To add complexity to the enigma's encipherment, a plugboard was introduced to allow pairs of letters to be swapped before it actually goes through the movable elements of the Enigma. It would not be enciphered as the same ciphertext letter. This is due to the fact that every time a letter is typed, the right most rotor is rotated one step so that when the same letter is pressed again, Once the current reaches the destination, a bulb that is coresponding to the ciphertext lights up.Įncipherment with Enigma is special in that the same plaintext letter will not yield the same ciphertext letter next time (polyalphabetic substitution). When a plaintext letter is pressed on the keyboard, the pressed key triggers an electric current which goes through the rotated components of the Enigma Machine. 2004 by author, CC BY-SA 3.0, Įnigma Simulator by Terry Long. By en:User:Wapcaplet - uploaded in english wikipedia on 30. Writing the Enigma Machine in ABAP: An Educational Project. 2005 by en:User:Matt Crypto, CC BY-SA 3.0, By Bob Lord - German Enigma Machine, uploaded in english wikipedia on 16. The accompanying information (and text/images) in this portal has been derived from the following sources: This project used py-enigma 0.1 to simulate the enigma emulator. Brian Neal for providing py-enigma 0.1 Library. This emulator was designed and implemented by Leelar Thaophialuang as part of his final year project in the School of Computer Science and Engineering at NTU Singapore.Ģ. The last tab provides the actual emulator (works on Firefox & Opera).ġ. Reference materials for further reading can be found in the acknowledgement section. The emulator only simulates the three rotor Enigma M3 (Army Navy). This enigma emulator has been developed by Leelar Thaophialuang as part of a set of demonstrators of basic cryptography techniques created in the School of Computer Science and Engineering at NTU Singapore under Anwitaman Datta's initiative, and captures the functionality and complexity of the Enigma machine. Breaking Enigma was a very important breakthrough that supported the Allied forces' war efforts, without which the outcome of the war and the world we live in today might have been quite different. ![]() Poor configuration and usage of the machine also facilitated the cryptanalysis. British scientist Alan Turing, leveraging on earlier breakthrough by three Polish military intelligence cryptanalysts Marian Rejewski, Jerzy Różycki and Henryk Zygalski, led the effort to break the cipher. Enigma machines were widely used by Nazi Germany during the World War 2. The Enigma machines were a series of electromechanical rotor ciphers based on a German engineer, Arthur Scherbius's invention. This puzzle was programmed in Java as a freshman class programming exercise at Harvard in 1996 and has been played over two million times.Image sources:, ,, Brief history of the Enigma machine If you can't solve one today, come back tomorrow and see the solution. Then look for words like THE, AND and A and keep swapping letter pairs until words you recognize start to emerge. Since E and T are the most common letters, a good way to start is to make the most frequent letters in the histogram E and T. You swap letter pairs by selecting a letter and then a second letter by pressing it - or with a keyboard if available. Your task is to unravel the quotation by swapping letter pairs until the original message is restored. In this simplified version, a one-stage letter substitution is used to scramble a well-known or humorous quotation. The original versions were inspired by "The Enigma Machine" which the Germans used to encode and decode messages in World War II. This entertaining puzzle has become a classic. ![]() In 2021, AWS joined the data centre industry in Europe to create the Climate Neutral Data Centre Pact, an industry commitment to proactively lead the transition to a climate neutral economy ().Ī study by 451 Research found that AWS infrastructure is five times more energy efficient than the average surveyed European enterprise data centre. Amazon is the world’s largest corporate purchaser of renewable energy, and in October 2021, Amazon’s first UK renewable energy project became operational and started delivering clean energy to the grid. AWS provides customers with the capability to implement a robust continuity plan, including the utilization of frequent server instance back-ups, data redundancy replication, and the flexibility to place instances and store data within multiple geographic regions across multiple Availability Zones.ĪWS is committed to running its business in the most efficient and sustainable way possible, and we are on a path to powering our operations with 100% renewable energy by 2025, five years ahead of our original target of 2030. In case of failure, there is sufficient capacity to enable traffic to be load-balanced to the remaining sites.Ĭustomers are responsible for implementing contingency planning, training and testing for their systems hosted on AWS. All data centres are online and serving traffic. ![]() Components (N) have at least one independent backup component. Each data centre is built to physical, environmental, and security standards in an active-active configuration, employing an n+1 redundancy model, ensuring system availability in the event of component failure. This approach ensures that AWS performs system recovery and reconstitution efforts in a methodical sequence, maximizing the effectiveness of the recovery and reconstitution efforts and minimizing system outage time due to errors and omissions.ĪWS maintains a ubiquitous security control environment across all regions. AWS has developed a three-phased approach: Activation and Notification Phase, Recovery Phase, and Reconstitution Phase. The AWS Business Continuity plan details the process that AWS follows in the case of an outage, from detection to deactivation. Prior to 1972, GMT was the de facto standard that attempted to keep universal time and atomic time in sync. GMT (an archaic term that is deprecated except in Great Britain) has now become another just another name for the time zone It is now universally agreed that atomic clocks provide a much better measure of time thanĭoes the Earth's rotation, yet for human comfort, we would still like time to stay in sync with the Earth's rotation. A UT1 day is now a couple of milliseconds longer (on average) than is a TAI day thanks to the slowing of the The TAI second is based on the Earth's average rotation rate between 1750Īnd 1892. There are exactly 86400 TAI seconds in a TAI day. TAI (International Atomic Time), which you didn't ask about, measures time according to a number of atomic clocks. There are exactly 86400 UT1 seconds in a UT1 day. Scaled by a factor of (one mean solar day)/(one sidereal day), with small adjustments for polar motion. UT1 (Universal Time 1) measures the Earth's rotation with respect to the distant stars (quasars, nowadays), Pretty much the same is stated (much more clearly and eloquantly) in this physics.stackexchange answer (slightly edited): Physicists and engineers who prefer a perfectly uniform time scale and ascribe no value to maintainingĪ link between the value of time and astronomical phenomenaĪn alternative (but equivalent) rendition.Astronomers and navigators who like a time connected with the angle of the Earth's rotation in space.UTC is maintained via leap seconds, such that DUT1 remains within the range:Įssentially, UTC is a compromise devised to satisfy the needs of two communities of users: The time correction DUT1 (sometimes also written DUT) is the difference between Universal Time (UT1), which is defined by Earth's rotation, and Coordinated Universal Time (UTC), which is defined by a network of precision atomic clocks. On the subject of the difference between UTC and UT1, Wikipedia has this to say: But note that the duration of a UTC second is always identical to the duration of a TAI second. Leap seconds are always added as the last second of a day so once or twice a year a UTC day had 86401 UTC seconds instead of 86400. Note that this may sound counter-intuitive but the addition of a leap second is actually slowing down UTC to bring it more inline with UT1. Slowing down over time, this means that TAI is getting slowly ahead of UT1 which is precisely why so far seconds have always been added, not removed from UTC. Given that the angular speed of the Earth's rotation is of uniform,Ĭonstant flow) causes UTC to diverge from the solar time (which is tied to physical realities and thus "dirtier"), it has to beĪdjusted once or twice a year with the addition or removal of a second. Unlike UT1) flows uniformly at a constant "rate" (driven by TAI). TAI flows uniformly by design but is unconnected to anyīy combining TAI and UT1 we get UTC (Coordinated Universal Time). Worldwide, and provides the exact speed for our clocks to tick. TAI time (International Atomic Time) is a time scale that combines the output of some 400 highly precise atomic clocks ![]() it is actually measuring the sidereal day and subsequently adjusted with a mathematical formula to arrive at the solar day. ![]() This is simply sayingĪgain (with different words) that UT1 does not flow uniformly.Īlso note that even though UT1 tracks the mean solar day, it is actually measured using distant X-ray sources, Minute or second (understood as fractions of a UT1 day) are not the same either. It therefore also follows that the exact duration of a UT1 hour, Given the various subtleties and physical world complexities governing the Earth's rotation, the exact duration ofĪ UT1 day is not always the same. This is the essence of astronomical, or solar time. ![]() Meridian, when the Sun is at its zenith, it's 12 o' clock noon, by definition. Relative to the observer as such it is influenced by vagaries in the Earth's rotation and does not flow uniformly. UT1 time (Universal Time) is also known as astronomical time or solar time and is determined by the position of the Sun UTC is really a crude and fundamentally flawed attempt to compromise Only TAI would make sense to an alien civilization.īetween UT1 and UTC, UT1 is the most anthropomorphic of the two. Only TAI (atomic time) is a true time scale and measures Physics time. The same can be said about all civil notions of time in general (as customarily used throughout history or enshrined in legal time definitions) UT1 and UTC are not really time scales, they do not really denote time, they just measure the Earth's angleĪnd keep tally of its revolutions and rotations around the Sun. The below notes capture my understanding of the different nuances in the definition of UT1, TAI and UTC times. |