Answer:
6 hours
explain
We know that each 15 degree makes an hour
15 degree = 1 hour
90 degree = 90/15=6 hours
Note: when places are located to the East of pm or GMT, the time will be ahead of PMT or GMT and vice-versa
So, 90 degree is to the east of PM, time will be
2:00pm +6 hours = 8:00pm on 90 degree east
Thank you!