CORE System Availability
- M-F: 6:30 a.m. - 8:00 p.m.
- Sa-Su: 6:30 a.m. - 8:00 p.m. (with the exception of maintenance windows).
CORE Maintenance Schedule and Period Close Dates
On monthly maintenance weekends, the system is down from 8:00 p.m. Friday night to 6:30 a.m. Monday morning.
Are you a Google Calendar user? Click here for instructions on how to add the CORE Calendar to your personal calendar.
Colorado Vendor Self Service (VSS)