Is it true that I need a one-day extension if my PCS leave ended the 9th, and I signed in on the 10th?

Was she hot?

Look- 1. you had till 2400 on the 9th. 2. By regulation you were AWOL for 1 day. They can hit you with an ART15 if they desire. NOrmally Post One Stops, don't want to worry with UCMJ.

I wouldn’t sweat this until you go through in-processing where your unit will probably handle the extra day of leave administratively. Since you had until 2400 to report and you returned to military control less than 24 hours later, you are not AWOL and you pay check won’t be stopped for “bad time” since you must be absent for at least 24 hours for that to occur. Technically, you failed to repair on what is traditionally a non duty day. Your command could charge you with the FTR but I have rarely seen anything other than an admin adjustment for less than one day.