[aprssig] Timestamp Questions
bruninga at usna.edu
Thu Jun 9 10:38:32 EDT 2011
> That is decidedly NOT what aprs101.pdf says on page 22:
> 092345z is 2345 hours zulu time on the 9th day of the month.
> 092345/ is 2345 hours local time on the 9th day of the month.
> 234517h is 23 hours 45 minutes and 17 seconds zulu.
> Are you going by memory Bob, or did you actually check somewhere for that
Got me there. I was going by memory, because it was my intent in
introducing the "h" format so that small devices could be built that did not
have real-time clocks or calendars.
But given that the spec says it is in zulu, then that is great! That is
better of course.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
On 6/9/2011 9:22 AM, Bob Bruninga wrote:
If it is h it is assumed to be local.
If it is z it is UTC (zulu).
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Rud Merriam
Sent: Wednesday, June 08, 2011 2:17 AM
To: TAPR APRS Mailing List
Subject: [aprssig] Timestamp Questions
Is an 'h' format timestamp assumed to be local or UTC?
Does APRS-IS send out 'h' timestamps as local, UTC, or as received from
If I am doing a HUD display for messages (or other stuff in the future) do I
care about the timestamp?
- 73 -
Rud Merriam K5RUD
Montgomery County ARES®
Mystic Lake Software
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