Yes, all kinds of time before. Local time as early as 4am or as late as midnight. Midnight is marginally fine as I could fight the sleeping devil; 4am will creat a panda (my eyes look alike at least).
Just that there would be no matches from 1 hour before and 1 hour after refresh, so ‘fortunately’ as per UK GMT time no match can take place in between 1.30am to 3.30am.