Via PBS:

The federal government plans to shut down on all but one Sunday morning during open enrollment for the Affordable Care Act, according to Department of Health and Human Services materials first reported by Kaiser Health News.  HHS made the announcement during a webinar training session with assisters who help enrollees sign up for individual plans, Kaiser Health News reporter Phil Galewitz Friday.  HHS regularly schedules maintenance outages for during open enrollment period, according to a spokesperson from the Centers for Medicare & Medicaid Service. The spokesperson said the schedule was provided earlier this year “to accommodate requests from certified application assisters.”  “System downtime is planned for the lowest-traffic time periods on including Sunday evenings and overnight,” the spokesperson said in a written statement to the NewsHour.  The department has already planned to shorten open enrollment season by 45 days — running from Nov. 1 to Dec. 15, 2017 for 2018 coverage. During the previous enrollment period, people had twice as much time to enroll for individual health insurance.

Source/more:  PBS News Hour