August 20, 2020 | 10:51am

The 9/11 Memorial Museum is reopening exclusively for victims’ families on the 19th anniversary of the terrorist attack — and then to general public a day later following a six-month closure amid the coronavirus pandemic.

The museum will be accessible to visitors five days a week beginning on Saturday, Sept. 12, according to a Thursday announcement. Hours have been reduced to allow for deep cleaning.

It will be open Thursday and Friday from noon to 7 p.m., and on Saturday through Monday from 10 a.m. to 5 p.m. It will be closed Tuesdays and Wednesdays.

Capacity will be reduced to 25 percent to allow for proper spacing among visitors, and masks must be worn on site at all times.

The museum will be open for a “one-way visitor experience with enhanced safety measures throughout,” and certain parts will remain closed, according to the announcement.

Tickets must be purchased in advance for timed sessions to allow for proper spacing.

The 9/11 Memorial will stay open seven days a week, though hours will be adjusted to mirror the museum as much as possible.