If it is 1 PM in Ireland (GMT +5) then in North Dakota it is either 7a.m (CST) or 6a.m (MST) seeing as North Dakota has two timezones.
About 1pm.
It is 1pm in Ireland.
1pm BST is the same as 1pm in Dublin, Ireland. British Summer Time (BST) and Irish Standard Time (IST) are both UTC+1 time zones, so there is no time difference between the two.
The time 4 hours after 9am is 1pm.
2 pm
There is now a 5 hour difference, so in Philadelphia it would be 8am when it is 1pm in Cork.
6pm
1 am.
1pm
10 AM
Saturday at 1pm North Western
If it is 1pm CST (Central Standard Time), it would be 7pm in the UK, as the UK is 6 hours ahead of CST.