APS Storage Ring Long Term Maintenance Sep 19, 2021 Calendar When: December 21, 2021 @ 8:00 am – February 1, 2022 @ 8:00 am 2021-12-21T08:00:00-06:00 2022-02-01T08:00:00-06:00 13 BMC 13 BMD 13 ID C/D 13 IDE General APS Storage Ring Long Term Maintenance, Dec 21, 8am – Feb 1, 8am