timedatectl- NTP Sync cannot set to yes [duplicate]

I tried so much different things of installing ntpq or other stuff but nothing works.

I dont can change it to yes. I hope someone can help here.

I had Ubuntu 16.04 This is my terminal output of the Command timedatectl

 Local time: Tue 2017-06-27 20:52:45 CEST Universal time: Tue 2017-06-27 18:52:45 UTC RTC time: n/a Time zone: Europe/Berlin (CEST, +0200) Network time on: yes
NTP synchronized: no RTC in local TZ: no

Also tried this tutorial:

But when i make sudo timedatectl set-ntp on it only changes Network time on: yes/no.

Also installed ntp. But from the command sudo ntpq -p i get this error

ntpq: read: Connection refused

2 Answers

When the clock is too much desincronized (more than 3 seconds?) it won't get update automatically. In order to force it manually:

sudo service ntp stop
sudo ntpd -gq ← here you can see it's getting sync
sudo service ntp start

Confirm everything's ok
timedatectl
Better explanation and all the credit here

After installing ntp

sudo apt install ntp

in the output of timedatectl

NTP synchronized: yes

the time is immediately automatically synchronized.