Calendar

The Galactic Standard Calendar is the standard measurement of time in the galaxy. The various galactic institutions use varying systems to determine time throughout the galaxy, but the standard form is usually centered around the Battle of Yavin as the starting year. BBY stands for Before the Battle of Yavin, and ABY stands for After the Battle of Yavin.

In the Galactic Empire, the official calendar is the Imperial Standard Year, or ISY, and its starting date is the first Empire Day, or 19 BBY. The Old Republic had used a calendar based on the Ruusan Reformation of 1,000 BBY, and later the Great ReSynchronization of 35 BBY, though both of these dating systems are no longer in use by the galaxy at large.

Time Measurement
The calendar is based on the size and rotation of the planet Coruscant. It is a luno-solar calendar based both on Coruscant's orbit around its sun, and the orbit of its primary satellite Centax 1. The standard unit of time is the standard second. Sixty standard seconds make up each standard minute, and sixty minutes make up each standard hour. Each day consists of 24 standard hours. A standard week is 5 standard days, and each month is seven weeks. (making 35 standard days each month) A standard year is 368 days, composed of ten months, three fete weeks, and three holidays. As the Hyperdrive Theory allows space travelers to bypass relativity, a single duration of time passes at all locations equally over a given interval.

In the The Galaxy:


 * 368 days=1 year
 * 60 seconds=1 minute
 * 60 minutes=1 hour
 * 24 hours=1 day
 * 5 days=1 week
 * 7 weeks=1 month
 * 35 days=1 month
 * 10 months + 3 festival weeks + 3 holiday days=1 year

The Tapani Sector's Year

 * By the Tapani Sector's domestic calendar, which is Galactic Standard with local names, the year flows as follows:
 * Month 1: Elona
 * Month 2: Kelona
 * Holiday 1: Tapani Day
 * Month 3: Selona
 * Festival Week 1: Expansion Week
 * Month 4: Telona
 * Month 5: Nelona
 * Holiday 2: Productivity Day
 * Month 6: Helona
 * Festival Week 2: Shelova Week
 * Month 7: Melona
 * Month 8: Yelona
 * Holiday 3: Harvest Day
 * Month 9: Relona (The Freeworlds Region of the Tapani Sector also recognizes Relona 10 - 15 as Independence Week.)
 * Month 10: Welona
 * Festival Week 3: Winter Fete

The Galactic Year

 * From the above information, we can extrapolate that the year, whether Tapani-named or not, in the galaxy flows as follows:
 * 2 months
 * 1 holiday
 * 1 month
 * 1 festival week
 * 2 months
 * 1 holiday
 * 1 month
 * 1 festival week
 * 2 months
 * 1 holiday
 * 2 months
 * 1 festival week

The week

 * The week flows as follows:
 * Day 1: Atunda
 * Day 2: Katunda
 * Day 3: Satunda
 * Day 4: Datunda
 * Day 5: Natunda