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29 February 1900
The leap year problem (also known as the leap year bug or the leap day bug) is a problem for both digital (computer-related) and non-digital documentation and data storage situations which results from errors in the calculation of which years are leap years, or from manipulating dates without regard to the difference between leap years and common years. Categories Leap year bugs typically fall into two categories, based on the amount of impact they may have in real-world usage: # Those that lead to error conditions, such as exceptions, error return codes, uninitialized variables, or endless loops # Those that lead to incorrect data, such as off-by-one problems in range queries or aggregation Examples Python The following Python code is an example of a Category 1 leap year bug. It will work properly until today becomes February 29. Then, it will attempt to create a February 29 of a common year, which does not exist. The date constructor will raise a ValueError with the message ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leap Year
A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) added to keep the calendar year synchronized with the astronomical year or seasonal year. Because astronomical events and seasons do not repeat in a whole number of days, calendars that have a constant number of days in each year will unavoidably drift over time with respect to the event that the year is supposed to track, such as seasons. By inserting (called '' intercalating'' in technical terminology) an additional day or month into some years, the drift between a civilization's dating system and the physical properties of the Solar System can be corrected. A year that is not a leap year is a common year. For example, in the Gregorian calendar, each leap year has 366 days instead of 365, by extending February to 29 days rather than the common 28. These extra days occur in each year that is an integer multipl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AeroXperience
AeroXperience is a Windows enthusiast blog/community cited numerous times for various Microsoft-related articles. As of May 8, 2009, AeroXperience ranks within the top 70,000 sites on the internet according to Netcraft.On November 20, 2009, it was renamed to winJade. It is semi-frequently cited for information on upcoming Microsoft technologies and has a media presence at most Microsoft conventions. (Note: The red badge on the interviewer is a PDC 2008 media badge) On November 20, 2009, it was renamed to winJade. Notable Articles AeroXperience has been cited thus far for at least the following notable articles:Internet Explorer 8 can be removed from Windows 7 A lesson on infinite loops(analyzing the Zune 30 leap year glitch) The Ultimate Steal (no, really) The Five Pillars of Windows 7ref name="All About Microsoft Five Pillars"> Q & A with Amitabh Srivastavaref name="SuperSite Blog Amitabh"> Hypothetical thoughts on what Windows 7 Milestone 3 might haveref name="Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calendars
A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills. Periods in a calendar (such as years and months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon. The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronized with the solar year over the long term. Etymology The term ''calendar'' is taken from , the term for the first day of the month in the Roman calendar, related to the verb 'to call out', referring to the "calling" of the new moon when it was first se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year 2100 Problem
In computer science, time formatting and storage bugs are a class of software bugs that may cause time and date calculation or display to be improperly handled. These are most commonly manifestations of arithmetic overflow, but can also be the result of other issues. The most well-known consequence of bugs of this type is the Y2K problem, but many other milestone dates or times exist that have caused or will cause problems depending on various programming deficiencies. Year 1975 On 4 January 1975, the 12-bit field that had been used for dates in the DECsystem-10 operating systems overflowed. There were numerous problems and crashes related to this bug while an alternative format was developed. Year 1978 The Digital Equipment Corporation OS/8 operating system for the PDP-8 computer used only three bits for the year, representing the years 1970 to 1977. This was recognized when the later COS-310 operating system was developed, and dates were recorded differently. Year 1989 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Formatting And Storage Bugs
In computer science, time formatting and storage bugs are a class of software bugs that may cause time and date calculation or display to be improperly handled. These are most commonly manifestations of arithmetic overflow, but can also be the result of other issues. The most well-known consequence of bugs of this type is the Y2K problem, but many other milestone dates or times exist that have caused or will cause problems depending on various programming deficiencies. Year 1975 On 4 January 1975, the 12-bit field that had been used for dates in the DECsystem-10 operating systems overflowed. There were numerous problems and crashes related to this bug while an alternative format was developed. Year 1978 The Digital Equipment Corporation OS/8 operating system for the PDP-8 computer used only three bits for the year, representing the years 1970 to 1977. This was recognized when the later COS-310 operating system was developed, and dates were recorded differently. Year 1989 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Düsseldorf Airport
Düsseldorf Airport (german: link=no, Flughafen Düsseldorf, ; until March 2013 ''Düsseldorf International Airport''; ) is the international airport of Düsseldorf, the capital of the German state of North Rhine-Westphalia. It is about north of downtown Düsseldorf, and some south-west of Essen in the Rhine-Ruhr area, Germany's largest metropolitan area. Düsseldorf is the fourth largest airport in Germany and handled almost 8 million passengers in 2021. It is a hub for Eurowings and a focus city for several more airlines. The airport has three passenger terminals and two runways and can handle wide-body aircraft up to the Airbus A380. Overview Usage Düsseldorf Airport is the largest and primary airport for the Rhine-Ruhr metropolitan region – the largest metropolitan region in Germany and among the largest metropolitan areas of the world. The airport is located in Düsseldorf-Lohausen. The largest nearby business centres are Düsseldorf and Essen; other cities within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Azure
Microsoft Azure, often referred to as Azure ( , ), is a cloud computing platform operated by Microsoft for application management via around the world-distributed data centers. Microsoft Azure has multiple capabilities such as software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS) and supports many different programming languages, tools, and frameworks, including both Microsoft-specific and third-party software and systems. Azure, announced at Microsoft's Professional Developers Conference (PDC) in October 2008, went by the internal project codename "Project Red Dog", and was formally released in February 2010 as Windows Azure, before being renamed Microsoft Azure on March 25, 2014. Services Microsoft Azure uses large-scale virtualization at Microsoft data centers worldwide and it offers more than 600 services. Compute services * Virtual machines, infrastructure as a service (IaaS) allowing users to launch general-purpose Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
February 29
February 29, also known as leap day or leap year day, is a date added to leap years. A leap day is added in various solar calendars (calendars based on the Earth's revolution around the Sun), including the Gregorian calendar standard in most of the world. Lunisolar calendars (whose months are based on the phases of the Moon) instead add a leap or intercalary month. It is the 60th day of a leap year in the Gregorian calendar, and 306 days remain until the end of the leap year. It is also the last day of February on leap years. It is also the last day of meteorological winter in Northern Hemisphere and the last day of meteorological summer in the Southern Hemisphere on leap years. Events Pre-1600 *1504 – Christopher Columbus uses his knowledge of a lunar eclipse that night to convince Jamaican natives to provide him with supplies. 1601–1900 * 1644 – Abel Tasman's second Pacific voyage begins as he leaves Batavia in command of three ships. *1704 – In Queen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gmail
Gmail is a free email service provided by Google. As of 2019, it had 1.5 billion active users worldwide. A user typically accesses Gmail in a web browser or the official mobile app. Google also supports the use of email clients via the POP and IMAP protocols. At its launch in 2004, Gmail provided a storage capacity of one gigabyte per user, which was significantly higher than its competitors offered at the time. Today, the service comes with 15 gigabytes of storage. Users can receive emails up to 50 megabytes in size, including attachments, while they can send emails up to 25 megabytes. In order to send larger files, users can insert files from Google Drive into the message. Gmail has a search-oriented interface and a "conversation view" similar to an Internet forum. The service is notable among website developers for its early adoption of Ajax. Google's mail servers automatically scan emails for multiple purposes, including to filter spam and malware, and to add context-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TomTom
TomTom N.V. is a Dutch multinational developer and creator of location technology and consumer electronics. Founded in 1991 and headquartered in Amsterdam, TomTom released its first generation of satellite navigation devices to market in 2004. the company has over 4,500 employees worldwide and operations in 29 countries throughout Europe, Asia-Pacific, and the Americas. History The company was founded in Amsterdam in 1991 as Palmtop Software, by Corinne Vigreux, Peter-Frans Pauwels and Pieter Geelen. The company focused on corporate handheld device software before focusing on the consumer market and releasing the first route planning software for mobile devices in 1996. Software was developed mainly for Psion devices and the company was one of the largest developers of Psion software in the late 1990s. Palmtop also worked with Psion in the development of EPOC32. Software was also developed for Palm and Windows CE devices. In 1999, Vigreux's husband, Harold Goddijn left Psion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PlayStation 3
The PlayStation 3 (PS3) is a home video game console developed by Sony Interactive Entertainment, Sony Computer Entertainment. The successor to the PlayStation 2, it is part of the PlayStation brand of consoles. It was first released on November 11, 2006, in Japan, November 17, 2006, in North America, and March 23, 2007, in Europe and Australia. The PlayStation 3 competed primarily against Microsoft's Xbox 360 and Nintendo's Wii as part of the seventh generation of video game consoles. The console was first officially announced at E3 2005, and was released at the end of 2006. It was the first console to use Blu-ray Disk technology as its primary storage medium. The console was the first PlayStation to integrate social gaming services, including the PlayStation Network, as well as the first to be controllable from a handheld console, through its remote connectivity with PlayStation Portable and PlayStation Vita. In September 2009, the ''Slim'' model of the PlayStation 3 was rele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft
Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washington, United States. Its best-known software products are the Windows line of operating systems, the Microsoft Office suite, and the Internet Explorer and Edge web browsers. Its flagship hardware products are the Xbox video game consoles and the Microsoft Surface lineup of touchscreen personal computers. Microsoft ranked No. 21 in the 2020 Fortune 500 rankings of the largest United States corporations by total revenue; it was the world's largest software maker by revenue as of 2019. It is one of the Big Five American information technology companies, alongside Alphabet, Amazon, Apple, and Meta. Microsoft was founded by Bill Gates and Paul Allen on April 4, 1975, to develop and sell BASIC interpreters for the Altair 8800. It rose to do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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