Here you go, OC thread. Some tidbits of the timeline I translated from the Nanoha-wiki.
Note that half the things here aren't translated literally. I had a lot of...personal rewriting due to bias. However, for most parts, they are facts.
Edit : Extra
Since A's apparently takes place in 2005 at MC 065,
That would mean MC 00, the beginning of Mid-childa's Modern Calendar is AD1941.