@echo off
for /f "delims=" %%a in ('wmic OS Get localdatetime  ^| find "."') do set dt=%%a
set datestamp=%dt:~0,8%
set timestamp=%dt:~8,6%
set YYYY=%dt:~0,4%
set MM=%dt:~4,2%
set DD=%dt:~6,2%
set HH=%dt:~8,2%
set Min=%dt:~10,2%
set Sec=%dt:~12,2%

set stamp=%YYYY%-%MM%-%DD%

xcopy C:\Users\X\AppData\Roaming\Mozilla\Firefox\Profiles\q1kkhlmm.default\places.sqlite "G:\Documents\Firefox Browser History Backup\%stamp%_firefox_history.sqlite*"

forfiles /p "G:\Documents\Firefox Browser History Backup" /s /m *.* /D -90 /C "cmd /c del @path"