Heather has an automatic GPS week rollover detection feature.  If it sees 10 
consecutive time messages with a year before 2016, it assumes that the receiver 
has week rollover issues and adds 1024 weeks to the time until the year is past 
2015.   This is indicated by the "ro" flag on the date line.

If you start Heather before the receiver has fully initialized or the receiver 
resets or glitches during operation this can cause a false rollover detection.  
 You can disable or reset the rollover compensation with the /ro=0 command.  
You can also use the /ro=# command to add/subtract an arbitrary number of 
seconds to the receiver time.  Once triggered, Heather does not automatically 
disable rollover compensation if the receiver starts sending valid dates...  
this is so you have an indication that something screwed up the receiver date.

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> Looks like it's exactly 1024 weeks off. 
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