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Converting from UTC to AM/PM
for both standard and daylight savings time.
Standard Time:
When converting from Coordinated Universal Time (UTC),
first use the conversion table below.

STANDARD TIME CONVERSION TABLE

DAYLIGHT SAVINGS TIME CONVERSION TABLE


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 Savings Time:
When converting from UTC to Daylight Savings 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



Converting Between AM/PM and 24 Hour Clock

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Converting from AM/PM to 24 hour clock:
between 12:00 AM and 12:59 AM, subtract 12 hours:
12:59 AM --> 0059

between 1:00 AM and 12:59 PM, a straight conversion:
10:00 AM --> 1000

between 1:00 PM and 11:59 PM, add 12 hours:
10:59 PM --> 2259


Converting from 24 hour clock to AM/PM:
between 0000 and 0059, add 12 hours:
0059 --> 12:59 AM

between 0100 and 1159, straight conversion to AM:
0100 --> 1:00 AM

between 1200 and 1259, straight conversion to PM:
1259 --> 12:59 PM

between 1300 and 2359, subtract 12 hours:
1559 --> 3:59 PM