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Time to Spot The Difference! Today's Game of the Day is Spot the Difference the original hit classic! The game is simple: two images are placed side by side, and you have to point out the differences!
Time to test your sleuthing skills with today's Game of the Day, Spot The Difference. In this hidden object puzzle game, you'll search and scan more than 100 levels of images, including ...
Timestamps do not have to be based on some absolute notion of time, however. They can have any epoch, can be relative to any arbitrary time, such as the power-on time of a system, or to some arbitrary time in the past. A distinction is sometimes made between the terms datestamp, timestamp and date-timestamp:
The offset 32.184 seconds was the 1976 estimate of the difference between Ephemeris Time (ET) and TAI, "to provide continuity with the current values and practice in the use of Ephemeris Time". [9] TAI is never revised once published and TT(TAI) has small errors relative to TT(BIPM), [6] on the order of 10-50 microseconds. [10]
For example, for an epoch date of midnight UTC (00:00) on 1 January 1900, and a time unit of a second, the time of the midnight (24:00) between 1 January 1900 and 2 January 1900 is represented by the number 86400, the number of seconds in one day. When times prior to the epoch need to be represented, it is common to use the same system, but ...
Every day in Unix time consists of exactly 86 400 seconds. Unix time is sometimes referred to as Epoch time. This can be misleading since Unix time is not the only time system based on an epoch and the Unix epoch is not the only epoch used by other time systems. [5]
10–11: International Designator (last two digits of launch year) 98 5: 12–14: International Designator (launch number of the year) 067 6: 15–17: International Designator (piece of the launch) A 7: 19–20: Epoch year (last two digits of year) 08 8: 21–32: Epoch (day of the year and fractional portion of the day) 264.51782528 9: 34–43
In ordinary usage, the civil day is reckoned by the midnight epoch, that is, the civil day begins at midnight. But in older astronomical usage, it was usual, until January 1, 1925, to reckon by a noon epoch, 12 hours after the start of the civil day of the same denomination, so that the day began when the mean sun crossed the meridian at noon. [11]