Changing the Timezone to Japan Standard Time (JST) on Ubuntu 26.04 LTS Server

timedatectl

kazu@ubuntu2604:~$ timedatectl
               Local time: Sun 2026-07-19 08:06:50 UTC
           Universal time: Sun 2026-07-19 08:06:50 UTC
                 RTC time: Sun 2026-07-19 08:06:50
                Time zone: Etc/UTC (UTC, +0000)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
kazu@ubuntu2604:~$

sudo timedatectl set-timezone Asia/Tokyo

kazu@ubuntu2604:~$ sudo timedatectl set-timezone Asia/Tokyo
[sudo: authenticate] Password:
kazu@ubuntu2604:~$ date
Sun Jul 19 05:10:05 PM JST 2026
kazu@ubuntu2604:~$ timedatectl
               Local time: Sun 2026-07-19 17:10:13 JST
           Universal time: Sun 2026-07-19 08:10:13 UTC
                 RTC time: Sun 2026-07-19 08:10:13
                Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
kazu@ubuntu2604:~$ date
Sun Jul 19 05:10:14 PM JST 2026
kazu@ubuntu2604:~$

kazu@ubuntu2604:~$ timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul

/ snip /