Oh…, that's interesting. I didn't know that offline time isn't included in the count. Thanks for your answer. Btw, does this time include crafting a soul? I've been playing for about 10 hours and still haven't managed to get one. (release 1.2)
In 1.3 there is a new charm to help you craft a soul waaay faster than in 1.2 - you should craft it ASAP.