The philippine AM stations or most of them give all details at sign on and sign off including licence number etc and a list of technical personal – The exception is the networked stations who just drop carrier on or off at sign on and sign off.
Many of the stations sign off well before midnight local time and also some of them dont come on the air until 6am or later.
The big stations sign on at 4am local time and sign off either 11pm or midnight.
There are one or two that run 24/7 down the lower end of the AM band.
Tony Magon to irca iog (2023-01-23)