What year did Skyrim begin?
I am currently in the year 4E 202 the 26th of some month? What was the beginning year, and how much "game time" has passed?
Solution 1:
Skyrim starts at 4E 201, 200 years after the Third Era ended along with the Septim bloodline.
If you're playing on PC, you can type help gamedayspassed in the console to see how much time has passed in-game.
Solution 2:
The game of Skyrim starts on Sundas, the 17th of Last Seed, 4E201, at approximately 9:30.
If you don't know what Morndas or Last Seed are, I suggest you look at the answer to this question.