[Unit]
Description=btrfsmaint

[Timer]
# we could programatically get this via:
# timedatectl show --property=Timezone | sed 's/^[^=]*=//'
# or
# readlink /etc/localtime | sed -r 's,^.*/([^/]+/[^/]+)$,\1,'
OnCalendar=Thu *-*-* 02:00:00 America/New_York

[Install]
WantedBy=timers.target