its hard to say exactly, usually between 7-14 days depending on strain, bud density, temp, & humidity.
start keeping an eye on em after about a week, and then check em every day after until dry.
remember, 60-65 degrees & 50% humidity, & dont let buds lose flexibility, too dry & buds will break upon contact when placing in bags, then youre left with a bunch of powder at the bottom of the bag.