4 ms·
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.
by 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 agoIn 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 agoThe point is to use local time for local things (store opening hours, school etc) and gmt for everything else.