Date-time Group
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Date-time Group

In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).[] The order in which these elements are presented may vary. The DTG is usually placed in the header of the message. One example is "11:22 Oct 13, 2020 (UTC)".

The DTG may indicate either the date and time a message was dispatched by a transmitting station or the date and time it was handed into a transmission facility by a user or originator for dispatch.

The DTG may be used as a message identifier if it is unique for each message.

Military Date Time Group

A form of DTG is used in the US Military's message traffic (a form of Automated Message Handling System). In US military messages and communications (e.g., on maps showing troop movements) the format is DD HHMMZ MON YY. Although occasionally seen with spaces, it can also be written as a single string of characters.

Example 1: 09 1630Z JUL 11 represents (Jul) 09 16:30 Jul 2011 (UTC).

Example 2: 13 1122Z Oct 20 represents (Oct) 13 11:22, Oct 2020 (UTC).

See also

References

  • TM 20-205, the Dictionary of United States Army Terms (1944)
  • ACP 121(I) p 3-7

External links

 This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C".


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

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