Question

what is GMT ?define in Long term

Answer 1

⟦H⟧⟦E⟧⟦R⟧⟦E⟧
 ⟦I⟧⟦S⟧
 ⟦U⟧⟦R⟧ 
⟦A⟧⟦N⟧⟦S⟧⟦W⟧⟦E⟧⟦R⟧
⬇️⬇️ 
Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard. The Royal Observatory in the UK. The Royal Observatory in Greenwich, London, United Kingdom.

OR

Mean solar time at the village of Greenwich near London which, as decided at the International Meridian Congress of 1884, is assigned 0 degrees longitude (called Prime Meridian). ... It is five hours ahead of the US Eastern Standard Time(EST) during standard period, and four hours ahead during daylight-saving period.

〘H〙〘O〙〘P〙〘E〙
 〘I〙〘T〙
 〘H〙〘E〙〘L〙〘P〙〘S〙 
〘Y〙〘O〙〘U〙 

Answer 2

It's GREENWICH MEAN TIME...........