# timedatectl
Warning: ignoring the TZ variable, reading the system's timezone setting only.
Local time: 금 2016-03-18 09:50:02 KST
Universal time: 금 2016-03-18 00:50:02 UTC
RTC time: 금 2016-03-18 00:50:23
Timezone: Asia/Seoul (KST, +0900)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau
Africa/Blantyre
Africa/Brazzaville
.........................
.........................
# timedatectl set-local-rtc 0
# timedatectl
Warning: ignoring the TZ variable, reading the system's timezone setting only.
Local time: 금 2016-03-18 10:05:39 KST
Universal time: 금 2016-03-18 01:05:39 UTC
RTC time: 금 2016-03-18 01:06:00
Timezone: Asia/Seoul (KST, +0900)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
# timedatectl set-local-rtc 1
# timedatectl
Warning: ignoring the TZ variable, reading the system's timezone setting only.
Local time: 금 2016-03-18 10:05:49 KST
Universal time: 금 2016-03-18 01:05:49 UTC
RTC time: 금 2016-03-18 10:05:49
Timezone: Asia/Seoul (KST, +0900)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The RTC is configured to maintain time in the local time zone. This
mode is not fully supported and will create various problems with time
zone changes and daylight saving adjustments. If at all possible use
RTC in UTC, by calling 'timedatectl set-local-rtc 0'.
참고
