Do you want free clocks in the games? Yes, right? Then if you played the game for two-three weeks, you will notice sometimes you will get free clocks for just playing the game(you must allow notifications for the game)
It will like this "Come play in the pond today and get free clocks". Now here is the main part of the glitch. Go to setting, date and time, change one day further then keep on changing it until you get the notification. It will be around 1-7 days.