Create a scheduler with 24-hour interval with the following code:
/system clock manual set dst-delta=+01:00 dst-end="jan/01/2020 00:00:00" dst-start="jan/01/1970 00:00:00" time-zone=+01:00 /system ntp client set enabled=yes mode=unicast primary-ntp=192.168.1.12
Change 192.168.1.12 with IP of the NTP server you wish to use.