find the time elapsed in i degree by dividing 360 by 1440 which is no of mins in day. east of greenwich is later so it is the gmt plus 10x unit calculated ie 4mins= i degree, so its 40 mins later
The local time of any place changes by 4 minutes for every degree of longitude that it moves east or west from the Greenwich Meridian.
30 degree East and 80 degree west time difference
greenwhich mean time
greenwhich mean time
same time
For each degree of longitude to the east, the local mean time is four minutes ahead.
There is a 5-hour time difference between Cairo (30° east) and Chennai (80° east), with Cairo being behind Chennai. So, when it's 10 AM in Chennai, it would be 5 AM in Cairo.
it is 11 hours ahead than greenwhich meridian
12
It will be one hour ahead of your local time. For example - if it's currently 8:30am where you are, at 30o east it will be 09:30.
Mean solar time on the prime meridian is known as Greenwich Mean Time (GMT).
If 2:00 Greenwhich mean time then add +5:30 for IST (Indian Standard Time) = 7:30