Question

What is GMT ? What is it used for ?​

Answer 1

Greenwich Mean Time (GMT) has been used to clearly designate epoch by avoiding confusing references to local time systems (zones). Historically, astronomers used Greenwich Mean Astronomical Time (GMAT), in which the astronomical day began at noon at longitude (0°), in accord with scientific tradition.

Answer 2

Answer:

• Greenwich mean time (GMT) has been used to clearly designate epoch by avoiding confusing references of local time systems (zones)