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Standard Time:
When converting to Coordinated Universal Time (UTC), the local AM/PM time
must be converted to a
24-hour clock.
Then, use the chart below to convert to UTC.
From Local Time to UTC:
| Eastern Standard Time (EST) | EST + 5 hours = UTC | |
| Central Standard Time (CST) | CST + 6 hours = UTC | |
| Mountain Standard Time (MST) | MST + 7 hours = UTC | |
| Pacific Standard Time (PST) | PST + 8 hours = UTC |
Some Examples:
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If the UTC time is greater than 2359, then you have crossed over to the next day. So for example, 2430 becomes 0030 the day after. | |||||
Daylight Saving Time:
When converting from Daylight Saving Time to UTC,
the conversions are similar but the UTC
Time is one hour less than when converting than its Standard Time counterpart.
Local AM/PM time must be converted to a
24-hour clock.
Then, use the chart below to convert to UTC.
From Local Daylight Saving Time to UTC:
| Eastern Daylight Time (EDT) | EDT + 4 hours = UTC | |
| Central Daylight Time (CDT) | CDT + 5 hours = UTC | |
| Mountain Daylight Time (MDT) | MDT + 6 hours = UTC | |
| Pacific Daylight Time (PDT) | PDT + 7 hours = UTC |
Some Examples:
|
If the UTC time is greater than 2359, then you have crossed over to the next day. So for example, 2430 becomes 0030 the day after. | |||||
24 hour clock |
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utc to am/pm |