Last week it works correctly, but now, my virtual machine inside virtualbox out of sync by 5 minutes$ systemctl status systemd-timesyncd systemd-timesyncd.service - Network Time Synchronization   Loaded: loaded (/usr/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: enabled)   Active: active (running) since Wed 2015-09-30 18:52:31 WIB; 10s ago     Docs: man:systemd-timesyncd.service(8) Main PID: 25684 (systemd-timesyn)   Status: Idle.   CGroup: /system.slice/systemd-timesyncd.service           25684 /usr/lib/systemd/systemd-timesyncd$ timedatectl set-ntp true $ timedatectl status      Local time: Wed 2015-09-30 18:54:17 WIB  Universal time: Wed 2015-09-30 11:54:17 UTC        RTC time: Wed 2015-09-30 11:46:27       Time zone: Asia/Jakarta (WIB, +0700) Network time on: yesNTP synchronized: no RTC in local TZ: no$ cat /etc/systemd/timesyncd.conf[Time]NTP=0.asia.pool.ntp.org,1.asia.pool.ntp.org,2.asia.pool.ntp.org,3.asia.pool.ntp.orgFallbackNTP=0.arch.pool.ntp.org 1.arch.pool.ntp.org 2.arch.pool.ntp.org 3.arch.pool.ntp.orgwhat's the cause of NTP synchronized: no?I'm using 64-bit ArchLinux and https://wiki.archlinux.org/index.php/Systemd-timesyncdEDIT ah it works now$ sudo systemctl daemon-reload $ systemctl restart ntpd                                                                                                                                                                                                                                $ systemctl restart systemd-timesyncd$ systemctl restart ntpd$ timedatectl status                                                                                                                                                                                                                                          Local time: Wed 2015-09-30 18:56:49 WIB  Universal time: Wed 2015-09-30 11:56:49 UTC        RTC time: Wed 2015-09-30 11:56:49       Time zone: Asia/Jakarta (WIB, +0700) Network time on: yesNTP synchronized: yes RTC in local TZ: no
Unable to start NTP
ntp