Djoc |
Please, pay attention to spoilers. Your tread tittle is quite one in itself. And you know this tread is going to contain spoilers, so please add a proper alert to your future titles.
Answer:
Spoiler:
I'm not sure what's the schedule, and this is probably left to the DMs liking. I will probably come up with daily prayers of 15-30 minutes, with 1 weekly sacrifice and full rituals that would take at least an hour.
As for how to find out, any prisoner goblin of the tribe would know that, perhaps even some goblins of other tribes. Gogmurt (Goblin druid) would be a very good source of information for this.