Look it up on their website so you have the correct information. Why would you asked someone else?

We took an organized tour. If you want to know the hours of operation, that should be available on the Internet.

Closed on Monday.

11:00 to 20:00 daily

See answer below from another tripadvisor member open froùm 11 AM until 8 PM execept Tuesday.

11:00 till 20:00 every day but Thursday when they close at 21:00. Like many such facilities the Pushkin is closed on a Monday.

Well, when one intends to go to Moscow and visit museums one can surf on the web and find the right answer to such questions. I guess the person looking for the information is skilled enough to do it. My point is that I can give personal comments following a place I visited but I do not want to play guide or next time I shall be asked to buy discounted tickets at Bolchoï. The Spirit of Trip Advisor is not that. All I can day is that Pushkin museum is worth the trip to Moscow provided one like paintings. Regards Bernard