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Eutelsat’s OneWeb constellation went down for 48 hr. after its ground segment, maintained by Hughes Network Systems, was not programed so that 2024 was a 366-day-long leap year.
An astronomer named Sosigenes of Alexandria told Julius Caesar that the tropical year (or the solar year) lasted about 365.25 days. So, a leap day was added to the calendar every four years to ...
But the modern Leap Day as we know it traces its roots back to ancient Rome. Romulus, the first king of Rome, established the Roman Republican calendar around 738 B.C., decreeing that a year began ...
Welcome to 2012—a leap year. The additional day in a leap year keeps the calendar in sync with the seasons. They're needed because Earth rotates more like 365-and-a-quarter times in one lap ...
Roughly every four years, an extra day gets tacked onto the end of February, a time-keeping convention known as the leap year. The practice of adjusting the calendar with an extra day was ...
The Julian calendar, with its original leap year additions, was 11 minutes and 14 seconds longer than the actual year, adding up to an extra 10 days by the time Pope Gregory XIII restructured the ...
Like leap days, leap seconds would be inserted into the year so as to align Universal Coordinated Time (UTC) with the Earth-tracking Universal Time (UTI). Leap seconds aren’t needed predictably ...
An astronomer named Sosigenes of Alexandria told Julius Caesar that the tropical year (or the solar year) lasted about 365.25 days. So, a leap day was added to the calendar every four years to ...