1. Grid-Iron week
Here are the main events that happen in Grid-Iron world (server time):
Daily/weekly update
Weather update - Every day at midnight
Transfers - Every day at 01:00 AM
Construction update - Every day at 00:30 AM
Injuries - Every day at 02:00
Training / Youth players pull reset - Every Thursday at 04:00 AM
Economy update (plus wages, income and expenses) - Every Wednesday at 04:00 AM
Matches
League games - Saturday/Sunday
Regional Cup games - Tuesday/Wednesday
Friendly games - Monday
AFLC International games - Thursday

np It's in the FAQ, and I would recomend you reading it for other purposes also since you're a new player. Gurus guide which is stickied on the rockie forum is also great