It can be either 7 AM GST or 10 PM GST depending on to which EST you are referring.
10AM PST is 1PM EST
It is 6:00pm
You haven't stated where you are or your local time zone so this cannot be answered.
3PM EST = 2PM CST. Central Standard Time is one hour behind Eastern Standard Time.
12:00 Noon
It is 1pm in Ireland.
American EST is 1pm in London, Australian EST is 11pm (the previous day).
If it is 1:00 PM EST it is 10.30 PM in India.
1pm EST
It is 6:00pm
10AM PST is 1PM EST
You haven't stated where you are or your local time zone so this cannot be answered.
There are two different time zones abbreviated EST. 1 PM CET = 7 AM EST in North America and 10 PM EST in Australia.
1pm EST
3PM EST = 2PM CST. Central Standard Time is one hour behind Eastern Standard Time.
12:00 Noon
AEST (or GMT+10) is fifteen hours ahead of EST (GMT-5) outside of daylight saving months and fourteen hours ahead during daylight savings as AEST does not observe but EST does. Therefore, in August when it is 1pm in the EST timezone it is 3am, the following day, in AEST.