I believe the easiest way is to add 10 hours to pst time. Or in reverse to subtract 10 from est time.
Tuesday, April 24, 2012 - 1:30 AM PST
Eastern Standard Time is one hour ahead (greater) Central Standard Time.
6:20 in EST = 3:20 in PST.
10 AM
8:00 am PST.
Pst=pacific time zone.
It would be 9 AM. EST is four hours ahead of PST.
2pm EST
When it's 6:30 PM PST, it's 9:30 PM EST.
3 PM in PST = 6 PM in EST
10AM PST is 1PM EST
5am
California is PST, which is 3 hours behind EST. So, 2:00 pm EST is 11:00 am PST.