Ill look again. Version I looked at direct from the ALPA website still has 12 hours. Thanks.

Edit- This is from the 6/20/2023 update of the SRH on DALPA website:

"A reserve pilot who calls in well on an on-call day prior to 1200 will not be charged a sick day and
will immediately be placed on long call status. If a reserve calls in well after 1201 on an on-call day,
they will be charged for a sick day. The logic is that a reserve pilot who calls in well prior to noon
can be given an assignment on that day since a long call pilot has a 12-hourleash."

I know 0600 makes sense, just wondering about the update now....