What is the current year?

[SpaceTime]

Agreeing with Boots here, whos to say Sirius years run at the same rate as ours? Regardless of what it is, I'm under the impression it is 819 A.S.

The concept of a year is not calculated by the amount of time it takes for the planet to complete the circle around its sun but with atomic clocks or whatever people use on this era. So if the whole Sirius is using clocks which are tuned at the same way, then we can safely assume that everyone has a similar concept of time.