[EricH]

Saturdays 9-5; after 5, break for church (one of the services starts at 6:00, but there is a meal at 5 and we build pretty close by). Required to show up for a little while.
Sunday afternoon: typically around 1 or 2-whenever. I often left at 6:30 for Scouts. Not required.
Monday -Thursday: After 7 or so to around 9. Wednesdays were pretty sparse due to other commitments from a large portion of the team. Not required; pretty much just subteams.
Friday: 7-whenever (remembering the marathon the next day). Mandatory; usually a status update and future planning happened either here or Saturday morning. Also travel and other "miscellaneous" meetings at this time.

Translation: Someone will be in the shop almost every night and at least half the day on weekends. Exceptions: Super Bowl Sunday (nobody shows up) and Valentine's Day (no married mentors allowed in the shop, unless they have made other arrangements for another time, though we've eased a little on this).