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  2. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    The problem exists in systems which measure Unix time—the number of seconds elapsed since the Unix epoch (00:00:00 UTC on 1 January 1970)—and store it in a signed 32-bit integer. The data type is only capable of representing integers between −(2 31 ) and 2 31 − 1 , meaning the latest time that can be properly encoded is 2 31 − 1 ...

  3. Linear timecode - Wikipedia

    en.wikipedia.org/wiki/Linear_timecode

    Linear timecode waveform as displayed in Audacity with 80 bit data frame highlighted. The basic format is an 80-bit code that gives the time of day to the second, and the frame number within the second.

  4. System time - Wikipedia

    en.wikipedia.org/wiki/System_time

    For example, the Unix system time 1 000 000 000 seconds since the beginning of the epoch translates into the calendar time 9 September 2001 01:46:40 UT. Library subroutines that handle such conversions may also deal with adjustments for time zones, daylight saving time (DST), leap seconds, and the user's locale settings. Library routines are ...

  5. Binary clock - Wikipedia

    en.wikipedia.org/wiki/Binary_clock

    Reading a binary-coded decimal clock: Add the values of each column of LEDs to get six decimal digits. There are two columns each for hours, minutes and seconds. Both clocks read 12:15:45. Most common binary clocks use six columns of LEDs to represent zeros and ones.

  6. IRIG timecode - Wikipedia

    en.wikipedia.org/wiki/IRIG_timecode

    Bits 1–4 encode seconds, and bits 6–8 encode tens of seconds (0–59) Bits 10–13 encode minutes, and bits 15–17 encode tens of minutes (0–59) Bits 20–23 encode hours, and bits 25–26 encode tens of hours (0–23) Bits 30-33 encode day of year, 35-38 encode tens of days, and bits 40–41 encode hundreds of days (1–366)

  7. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    A countdown is a carefully devised set of procedures ending with launch of a rocket. Depending on the type of vehicle used, countdowns can start from 72 to 96 hours before launch time. There are two countdowns proceeding simultaneously: The T-minus clock, a schedule of planned activities prior to launch (T−0), and

  8. Swatch Internet Time - Wikipedia

    en.wikipedia.org/wiki/Swatch_Internet_Time

    Instead of hours and minutes, in Swatch Time the mean solar day is divided into 1,000 equal parts called .beats, meaning each .beat lasts 86.4 seconds (1.440 minutes) in standard time. The time of day always references the amount of time that has passed since midnight (standard time) in Biel, Switzerland , where Swatch's headquarters is located.

  9. Metric time - Wikipedia

    en.wikipedia.org/wiki/Metric_time

    1.67 minutes (or 1 minute 40 seconds) 10 3: kilosecond: 1 000: 16.7 minutes (or 16 minutes and 40 seconds) 10 6: megasecond: 1 000 000: 11.6 days (or 11 days, 13 hours, 46 minutes and 40 seconds) 10 9: gigasecond: 1 000 000 000: 31.7 years (or 31 years, 252 days, 1 hour, 46 minutes, 40 seconds, assuming that there are 7 leap years in the interval)