It would have been an illegal paring if it was a turn. Because it was a DH it is legal.

Remember that your last flight assignment must end at 15+30 and then 30 mis for duty out. This is what I look at on SC.

Say I start at 0500, the latest I can operate a revenue flight (block in) is +15+30 from this time or 2030+30 to get to 16 hrs or the Whitlow limitation. This will give you your 24 hr look back for eight hrs of rest.
16+8=24.

Keep in mind that for Flag operations this does not apply. You could get called out in your last minute of 24 hr SC for a trip to TLV and be legal.