Since Eclipse filming started in August 3rd, I kept track of everything they filmed and rehearsed. I wrote down all of the tweets as well. Hopefully this helps :) Filming ended October 29th.

Aug. 3rd:
-The whole cast had fight training for the huge battle between the cullens/wolves vs. the newborns.

Aug. 17th:
-Filmed Jasper and Maria scenes

Aug. 18th:
-Seth and Leah Clearwater have been announced. Played por Boo Stewart and Julia Jones.
-Kristen fitted for wigs.
-Also, continuation of Maria and Jasper flashbacks.

Aug. 19th:
-Filmed Quilette village scene from 300 years ago. It's the Legends...