This is the example for setting Timezone of your System.
/1/ Replace to your own Timezone to the example below.
# display available timezone list
root@dlp:~# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
.....
.....
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
UTC
# set timezone
root@dlp:~# timedatectl set-timezone Europe/Sofia
# show settings
root@root:~$ timedatectl
Local time: пт 2021-04-30 10:02:27 EEST
Universal time: пт 2021-04-30 07:02:27 UTC
RTC time: пт 2021-04-30 07:02:27
Time zone: Europe/Sofia (EEST, +0300)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no