How to burn timestamp in video with different date format using FFMPEG?
i found my answer in this link:

strftime - format date and time

strftime(3) - Linux man page

ex: i use this command for demo and i made several other command for different date format

ffmpeg -y -i input.mp4 -vf "drawtext=fontfile=roboto.ttf:fontsize=36:fontcolor=yellow:text='%{pts\:gmtime\:1575526882\:%A, %d, %B %Y %I\\\:%M\\\:%S %p}'" -preset ultrafast -f mp4 output.mp4