http://tg-tj.facebookwkhpilnemxj7asaniu7vnjjbiltxjqhye3mhbshg7kx5tfyd.onion/business/help/190490051321426
For example, if you start running your ad at 12am on a Wednesday and your daily budget is $10, we won't spend more than $40 for the remainder of the calendar week ($10 multiplied by the 4 days left). Note: For campaigns using Advantage+ campaign budget, we use the campaign start time (rather than ad set start time) for proration.