.
Converting from UTC to AM/PM
for both standard and daylight saving time

Standard Time:
When converting from Coordinated Universal Time (UTC), first use the conversion table below.

From UTC to Local Time:
 Eastern Standard Time (EST) UTC - 5 hours = EST Central Standard Time (CST) UTC - 6 hours = CST Mountain Standard Time (MST) UTC - 7 hours = MST Pacific Standard Time (PST) UTC - 8 hours = PST

Next, the local time is converted from a 24 Hour Clock to an AM/PM time.

Some Examples:
UTC Date
UTC Time
Local Time -->
24 Hour Clock
AM/PM Time
Local Date
May 2nd
1459
959 (EST)
9:59 AM (EST)
May 2nd
May 2nd
1800
1300 (EST)
1:00 PM (EST)
May 2nd
May 2nd
2300
1800 (EST)
6:00 PM (EST)
May 2nd

If the local time on the 24 hour clock is less than 0000, then you have crossed over to the previous day. So for example, -0400 becomes 2000 the day before.

May 3rd
0000
1800 (CST)
6:00 PM (CST)
May 2nd
May 3rd
0100
1800 (MST)
6:00 PM (MST)
May 2nd
May 3rd
0200
1800 (PST)
6:00 PM (PST)
May 2nd

Daylight Saving Time:
When converting from UTC to Daylight Saving Time, the conversions are similar but the UTC Time is one hour less than when converting than its Standard Time counterpart. First use the conversion table below.

From UTC to Local Time:
 Eastern Daylight Time (EDT) UTC - 4 hours = EDT Central Daylight Time (CDT) UTC - 5 hours = CDT Mountain Daylight Time (MDT) UTC - 6 hours = MDT Pacific Daylight Time (PST) UTC - 7 hours = PDT

Next, the local time is converted from a 24 Hour Clock to an AM/PM time.

Some Examples:
UTC Date
UTC Time
Local Time -->
24 Hour Clock
AM/PM Time
Local Date
May 2nd
1459
1059 (EDT)
10:59 AM (EDT)
May 2nd
May 2nd
1800
1400 (EDT)
2:00 PM (EDT)
May 2nd
May 2nd
2300
1900 (EDT)
7:00 PM (EDT)
May 2nd

If the local time on the 24 hour clock is less than 0000, then you have crossed over to the previous day. So for example, -0400 becomes 2000 the day before.

May 3rd
0000
1900 (CDT)
7:00 PM (CDT)
May 2nd
May 3rd
0100
1900 (MDT)
7:00 PM (MDT)
May 2nd
May 3rd
0200
1900 (PDT)
7:00 PM (PDT)
May 2nd

am/pm to utc
 Terms for using data resources. CD-ROM available. Credits and Acknowledgments for WW2010. Department of Atmospheric Sciences (DAS) atthe University of Illinois at Urbana-Champaign.