[time-nuts] Sun Outage

[Mark Sims]

The sun can have some effects on GPS signals,  particularly when doing ultra-precisiony sorts of things.
Version 4 of Lady Heather calculates the sun (and moon) positions (and moon phase) and can display them as part of the satellite position map (and analog watch display).  This feature was added at the request of a few people that are/were investigating the effects of the sun on GPS signals.