I was just noting that most countries don't observe Daylight Savings Time. Also, it makes sense to store that setting with date time.
https://en.wikipedia.org/wiki/Daylight_saving_time_by_country
If a battery were to rupture, the battery acid from it could corrode the surrounding components and the PCB. The PSP has a sequestered compartment for the battery, preventing that.
Then I don't know why I'm asked to set it after charging the battery after I put it back in.
It's over 14 years old. Get another psp they don't cost much 🙈
This is my 5th PSP.