3 ms·

Ill call you at 16:00 gmt.

• c0pium 3y ago
  Because the earth’s rotation is not actually consistent, GMT can be up to 16 minutes before or after the time when the sun crosses the meridian.
  • deathanatos 3y ago
    In regards to this aspect of timekeeping, AIUI the earth's rotation is nearly constant. The 16 minute difference is caused primarily by our orbit not being circular. (And to a degree, according to Wikipedia[1], the axial tilt.) [1]: https://en.wikipedia.org/wiki/Solar_time https://en.wikipedia.org/wiki/Solar_time
  • thsksbd 3y ago
    The point is to use local time for local things (store opening hours, school etc) and gmt for everything else.