Imladris
Look in Appendix B of 'The Return of the King'.
There is a section there titled:
"THE CHIEF DAYS FROM THE FALL OF THE BARAD-DUR TO THE END OF THE THIRD AGE"
The year is 3019 (Steward's Reckoning) or 1419 S.R. (Shire Reckoning) for this game.
Tolkien lists November 1st as the date Sharkey is dispatched and the ruffians driven from the Shire. November 3 is how he lists The Battle of Bywater - which is the endpoint for this game.
All the action for this game takes place in the week just previous to this battle - focusing on the rousing of the Tooklanders to join in the fight when Pippin returns and gives the Call to arms.
"Winterfilth" would be the Shire name for October.
Here is a fun interactive calendar to play with:
INTERACTIVE CLAENDAR
[ September 04, 2003: Message edited by: piosenniel ]