Orrery by Ken Young is an astronomical application which displays the night sky, along with (optionally) such things are the galactic plane, etc. Constellations may also be shown.

Release notes:

New user features:
Added a moon calendar, which shows the phase of the moon for every day over a 21 month period centered on the current month.

Bug Fixes:
Flipped the orientation of the moon by 180 degrees on the “Sun and Moon Information” page, for locations in the southern hemisphere. It is oriented correctly on the new moon calendar. It has always been correct on the sky display.