Ubuntu 20.04にシステムのタイムゾーンを設定する
# タイムゾーン一覧を表示
# timedatectl list-timezones
2.タイムゾーン設定
# timedatectl set-timezone Asia/Tokyo
3.設定を確認
$ timedatectl
Local time: Sun 2021-09-12 19:27:54 JST
Universal time: Sun 2021-09-12 10:27:54 UTC
RTC time: Sun 2021-09-12 10:27:54
Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no
Local time: Sun 2021-09-12 19:27:54 JST
Universal time: Sun 2021-09-12 10:27:54 UTC
RTC time: Sun 2021-09-12 10:27:54
Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no
Local time: Sun 2021-09-12 19:27:54 JST Universal time: Sun 2021-09-12 10:27:54 UTC RTC time: Sun 2021-09-12 10:27:54 Time zone: Asia/Tokyo (JST, +0900) System clock synchronized: yes NTP service: active RTC in local TZ: no