Can you help me convert hours?

8:00 am in GMT time is 3:00 am of EST time the same day ( 5 hours before GMT).
But when is it in EDT time?

EDT is one hour ahead, but GMT doesn’t change. So, 8:00am GMT is 4:00am EDT.

Here’s a handy site for times:

GMT: Greenwich Mean Time - World Time / Time in every Time Zone

Heres a good site also to see where you are in the trading day.

OANDA FXMarketHours - FX Markets Working Hours

Good one. This will come in handy. Thanks for the link.

Thanks, to both of you!
Dafna.