During the Old Republic Era, the Galactic Standard Calendar was the most widely used measurement of time in the galaxy.
Dating SystemsThere are currently three well-known dating systems, whereof two are still in use and one is sometimes found referenced in older historical texts and scriptures. All three appear to use the same names for days, months and seasons, as well as base their time measurements on the rotation of Coruscant. The only notable difference is the inclusion of an additional two months in the Ductavis Dating System.
The Treaty of Coruscant Dating System (TOC)The famous Jedi Master and historian Gnost-Dural recently created a new dating system by using the Treaty of Coruscant (TOC) as the epoch marking year zero. He then popularized the timeline's before and after years (referred to as BTC and ATC) through his holographic records. It has since been readily accepted by the vast majority of the Galactic Republic much quicker than anticipated.
The Ductavian Dating System (DD)In the Sith Empire and a few other regions, the old Ductavis Dating system is still used instead of the TOC. The before and after year 0 were simply called 'Before Ductavis' (BD) and 'After Ductavis' (AD). It's dating system uses the birth of the historical figure Biel Ductavis to mark it's year 0. To knowledge, Biel Ductavis had served as the Grand Master of the Jedi Order during the end of the Pius Dea era, and was elected as the new Supreme Chancellor for the Galactic Republic after its fall in 7313 BTC / 42 AD. During his tenure, he continued to fill the role of Grand Master as well, and thus led both the Galactic Republic and Jedi Order until passing away from old age in 7092 BTC / 263 AD.
The Galactic Republic Founding Dating System (GRF)The oldest known dating system hails from the founding of the Galactic Republic, which occurred circa 21,400 BTC / 28,755 BD. The founding date itself was used as the marker of year 0, and it's before and after years were marked as BF (Before Founding) and AF (After Founding) respectively. Aside from being found in old texts and scriptures, it's considered deprecated and doesn't see any current use in the modern Galaxy.
Other Dating SystemsAside Gnost-Dural’s dating system, the Galactic Republic uses at least twenty other variants in use, each with alterations made to better fit the area it's used in. One subset of this calendar was called the 10-month standard and was used by the Galactic Republic Judiciary. Another was composed of 11 months and was utilized by many archivists, and yet another was hexadecimal based and utilized by the infrastructure. Some regions retained their own calendars for cultural reasons but there were often tools readily available for converting dates between different calendars.
Time MeasurementThe Galactic Standard calendar was originally based on the rotation of the planet Coruscant. It’s a lunar-solar calendar that was built through studying both the planet’s orbit around its sun and the orbit of its primary satellite, Centax-1. The planet’s cycle was 368 days long with one day consisting of 24 hours. The basic unit of time was the standard second. As the Hyperdrive Theory allowed space travellers to bypass relativity, a single duration of time was considered passed at all locations equally over a given interval.
|1 minute||60 seconds||60 second|
|1 hour||60 minutes||60 minutes|
|1 day||24 hours||24 hours|
|1 week||5 days||5 days|
|1 month||35 days||30 days|
|1 month||7 weeks||6 weeks|
|1 year||368 days||368 days|
|1 year||10 months + holidays*||12 months + holidays*|
|Holidays*||3 weeks + 3 days||1 week + 3 days|
Galactic Republic Holidays
New Year FeteA week long festival that occurs between the last day of Welona and the first day of Elona the following year.
Festival of LifeA week long festival that occurs between the last day of Helona and the first day of Melona. A large fair is usually held in the market sector on Coruscant during the last two days of the festival.
Festival of StarsA week long festival that occurs between the last day of Yelona and the first day of Relona.
Republic DayA national day celebrated between the last day of Kelona and the first day of Selona.
High DayA holiday placed between the last day of Telona and the first day of Nelona.
Life DayA holiday placed between the last day of Relona and the first day of Welona.
Sith Empire Holidays
Red CarnivalA week long festival that occurs between the last day of Helona and the first day of Melona. This event included military parades, orbital firework displays and public executions of the Empire's political enemies. It drew an exceptional number of visitors to Ziost and was an event imperial citizens saved their credits for all year.
Empire DayA national day celebrated between the last day of Welona and the first day of Elona the following year.
Ascension DayA holiday celebrated between the last day of Pelona and the first day of Selona.
Day of RemembranceA holiday celebrated between the last day of Velona and the first day of Relona.
WeekdaysWhile certain locales may use their own names on weekdays, these are the most readily used ones.
Pelona (Spring, Empire Only)
Velona (Autumn, Empire Only)
SeasonsSeasons are mostly archaic and only readily used on planets with heavy agriculture or a similar dependency on the weather shifting.