Using latest video functionality in Wolfram Language this can be updated to the code below -- with the simple optional and very useful ability to Parallelize over multiple computer cores. I was always wondering what is the sky now in another hemisphere :-)
Parallelize@​​AnimationVideoRasterize@
[◼]
SkyChart

Sydney
CITY
,t,PlotLabelt,t,Now,Now+
24
h

Out[]=