How do I know how long I have been playing Cc saga??

I don't know of any way of finding out how long you have been playing to be honest @buttparsa

King do send you an email on the anniversary of your joining though, so that would be a rough guide.

Also if you play on android find the app in your settings/apps & notifications/app info, click on it and it will display how much Mobile Data and Wi-Fi the app has used since you installed it. This can be used as a rough guide as long as you haven't reinstalled your app at anytime

Surely how long you have been playing Candy Crush and how long you have been a member of this forum are two different things.