Can't believe I didn't post it here! So game timeline according to the game!
Starting with kcd 1. This is the very first journal page so we know it started in Spring.
2. The Skalitz raid was a documented one, and by the weather and everything else, I doubt they changed the month so it's March
3. Henry stays in bed for 2 weeks after getting hurt.
4. Hans says it's only been a few weeks since they knew each other at the end of Kcd 1 so this game happens in a month at best. So take March/April as kcd 1.
5. Rattay to Trosky is 3 days ride/ 2 days if the weather is good so we're still in say April.
6. The next exact date we get is June during Via Argentam, and by then we are in Kuttenburg. So April/May/June is Trosky to Kuttenburg.
7. It matches with Sigismond attacking Kuttenburg in dec 1402 to now. (Dec-June) being 6 months
7. Next is Henry saying it's only been a few months since Martin died. So it tracks with that happening from March to June.
8. Now the siege alone takes another month. If u do the 3rd dlc, u know 30 days of summer is already gone. Now that could be when the siege was going on or after the siege. All in all, the game ends in July/August.
That's about it! Now I really wish they would start kcd 3 with Vienna since it only happens in Nov. Close enough from kcd 2
PS: There's another timeline included in game but that's an oversight from the devs. During the band of bastards, the guy Kuno goes to fight against at the end, sent a letter to Radzig with his signed name and date June, which is impossible when by 2/4 June, Henry is in Kuttenburg