[time-nuts] Thunderbolt Rollover

[Tom Van Baak]

Hi Mark,

Thanks for adding this fix to your software.

Note that handling GPS rollovers is easy when you use JD or MJD (Modified Julian Date) internally.
Since 1980-01-06 is MJD 44244 and 1024 weeks is 7168 days, the events occur at MJD 44244 + N*7168.
For the TBolt it's 44244 + 936*7 + (N-1)*7168, or 50796 + N*7168.

See also the gpsweek tool under http://leapsecond.com/tools/
Sample usage: gpsweek 1980 2100 | grep rollover

/tvb

----- Original Message ----- 
From: "Mark Sims" <holrum at hotmail.com>
To: <time-nuts at febo.com>
Sent: Tuesday, September 16, 2014 1:41 PM
Subject: [time-nuts] Thunderbolt Rollover


> Version 4 of Lady Heather(not yet released) has rollover compensation built in.  If the detected date is less than the current system date it adds 1024 weeks to the Tbolt date/time by default.  You can also specify an alternate rollover offset or disable rollover compensation.