on a galactic scale
A Galactic Month is a unit of time equal to one-tenth of a Galactic Year or ten Galactic Days. It is officially a unit in the Basilicus Weights and Measures system. As with all temporal measurements in the BWM, the Galactic Month marks a fraction of the duration of a full rotation of Black Hole Inatus.
The term "Galactic Month" is a generic translation from ancient Helic. The original word, "Tzar" is still in use by the Helics, but most civilizations have adapted a native word to describe the same unit.
Official Definition Edit
One Galactic Month is equal to .1 of a rotation of the Black Hole Inatus. A Galactic day is equal to 8514720 Earth seconds.