Bill explains his Android setup the best, so I’ll just leave it to him:
Finally, the entire upper part of screen is the BITS widget. The centerpiece, which tonight is the waning gibbous moon, changes in real time. As the month progresses, the phase of the moon changes as well. During the day, based on local sunrise and sunset times, the moon is replaced by the sun . Additionally, a graphic representation of current weather conditions appears above either the sun or the moon. Tonight there are “few clouds”.
I purposely waited til night time to take this screenshot because I think the moon looks best. I could force it to always show the moon, but I think it’s neat to have my home screen change to reflect real world conditions.