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RFC 1123 Time Format

This calculator requires the use of Javascript enabled and capable browsers. This creates and displays the time in the RFC 1123 International format. This non-standard was originally posted in October of 1989. Though this was NEVER formally adopted as a standard, this is much more of a standard than the standard that more or less replaces it, ISO 8601. An RFC is a Request For Comments from those that may have reason to influence the request, or have significant input. Below, we further define what we feel is the most bizarre (clearer?) standard we have ever seen in computers.

In order from left to right, with a space between each,

Day in the form of DAY, (Three letter abbreviation followed by a comma)
Date in the form DD-MON-YYYY
Month in the form DD-MON-YYYY (Three letter abbreviation)
Year in the form DD-MON-YYYY

The date and time are displayed on the same line, date first followed by the time, and the time is in this format, with a space between the date's year and the hours,
Hours in the form hh:mm:ss
Minutes hh:mm:ss
Seconds hh:mm:ss

The time is Coordinated Universal Time (UTC), though the indication can optionally be Greenwich Mean Time (GMT).

In contrast to ISO 8601, a standard that is TANS (there ain't no standard), in reality, this is fairly tight!

For more information on the subject and perhaps a clearer understanding of how non-standard standards really are, you might want to look at these sites: http://www.ietf.org/rfc/rfc1123.txt, http://www.w3.org/TR/NOTE-datetime and http://www.cl.cam.ac.uk/~mgk25/iso-time.html. You might also wish to see the early America time standard, Back Porch Close To Time Conversation Non-Standard Standard Calculator.

The time shown in this display is as of the time this page loaded, UTC. We also show you information about YOUR NORMAL time zone and the condition you are in at present concerning DST, Daylight Saving Time. If you observe DST, your offset will typically be an hour less.

RFC 1123 Format



Local Time


Updated 8.17.11


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