There are no special times to play free slots games. Since These games are hosted on servers than run 24 hours a day, 365 days a year, you can log in to play free slots games whenever you want.
You should be prepared to be blown off your feet when playing the free slots games because of the high quality of their sound and graphics. Most people who play these games for the first time cannot believe their eyes and ears. But then this is the fun that only the free slots games can provide.