They are looking for a 30 hour window within the last 7 days on both sides of the trip meaning you are legal to pick it up. If it's a stand alone trip then the before the trip rest period ends at sign in time and starts 30 hours earlier. The rest period at the end of the trip starts 15 minutes after scheduled arrival time for domestic or 30 minutes for international and that rest period ends 30 hours after that.

It starts getting confusing when you throw in reserve days etc. For the purposes of calculating a 30 hour window, on day one of reserve you duty on at 4:00AM and on the last day even though you don't know your assignment on the last day you need to assume you are on duty until midnight.

So let's say you are working reserve Monday-Friday and you want to pick up OT on Sunday or the day before you go on reserve. You end up working 6 days in a row which is the max. You have to go off duty from your OT by 18:00 so you are legal at 4:00AM. Those 6 days all turn into a trip for the purposes of calculating 30 hours of rest so the 30 hour clock starts at Midnight between Friday and Saturday and ends 30 hours after that.

Instead of picking up OT before your 5 days of reserve you decide you want to pick it up on Saturday after reserve. You can't have a sign in time any earlier than 10:00AM because you could be on duty until midnight. For the 30 hours rest calculation. Mon-Sat is now a "whole trip" the rest before the trip ends at 4:00AM on Monday and starts 30 hours before that. The rest after the trip ends following the 15 or 30 minute rule I described earlier.

Hope this helps everyone out.

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