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“(Note that the related standard C37.118-2005[5] uses the opposite sign convention for time zone offset: offset = timecode – UTC, UTC = timecode – offset.)” I don't think this is correct. I believe the bit definitions for offset and sign are exactly the same between 1344 and C37, but their respective examples of using the sign bit are different, and both examples are ambiguous as to what the sign bit value is set to.

In any event, offset is defined in both specs as follows: "Offset from coded IRIG-B time to UTC time. IRIG coded time plus time offset (including sign) equals UTC time at all times (offset will change during DST)."

Note IRIG to UTC. So the wiki is wrong with respect to opposite sign convention unless someone can prove otherwise.

UPDATE: C37.118.1-2011 modifies the offset bit defintion as follows: "IRIG code time 'minus' time offset." — Preceding unsigned comment added by Stangeman (talkcontribs) 02:08, 14 January 2012 (UTC)[reply]

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