https://starwars.fandom.com/wiki/Galactic_Standard_Calendar#...

The Galactic Standard Calendar or Galactic Standard Time was the standard measurement of time in the galaxy. It was based on the Coruscant solar cycle. The Coruscant solar cycle was 368 days long with a day consisting of 24 standard hours.

60 standard minutes = 1 standard hour

24 standard hours = 1 standard day

5 standard days = 1 standard week

7 standard weeks = 1 standard month

10 standard months + 3 festival weeks + 3 holidays = 368 standard days = 1 standard year