MIT will be closed on Thursday, 12/24 and Friday, 12/25 for the Christmas Day holiday so Fab.nano will be closed.
This year MIT has extended the holiday period to include the following week of 12/28 through New Years Day, Friday 1/1/21. As usual during Institute holidays, the fabs in Building 39 and Building 12 will not be staffed, so they will be only open to qualified 24hr users who must follow the buddy policies in each fab.