Originally Posted by Puddytatt

23 S 5 d 2 b Note. Required to ascertain your schedule 12 hours prior to the end of your last non-fly day. Rest is a soft non-fly day.

They can put it on your schedule right after 30 hours if they notify you when or before they notify you of the rest. If you start your rest, you aren't required to ascertain (not an action verb so not duty) your schedule until 10 hours prior to end of rest. They can give you a trip or shirt call starting 10 hours after the end of the rest. But if it isn't on by 10 hours prior to the end, that reflects to 18 hours after the end of the rest. They can always put something on that starts before those times and hope you acknowledge it, but you aren't required to ascertain or acknowledge it.