xxxxxxxxxx:/var/log$ sudo systemctl -l status systemd-timesyncd
● systemd-timesyncd.service - Network Time Synchronization
   Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2022-09-26 17:07:17 JST; 2 days ago
     Docs: man:systemd-timesyncd.service(8)
 Main PID: 786 (systemd-timesyn)
   Status: "Connecting to time server 91.189.94.4:123 (ntp.ubuntu.com)."
    Tasks: 2 (limit: 4656)
   CGroup: /system.slice/systemd-timesyncd.service
           mq786 /lib/systemd/systemd-timesyncd

Sep 28 17:51:23 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.56:123 (ntp.ubuntu.com).
Sep 28 17:51:33 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.57:123 (ntp.ubuntu.com).
Sep 28 17:51:43 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 91.189.91.157:123 (ntp.ubuntu.com).
Sep 28 17:51:53 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.58:123 (ntp.ubuntu.com).
Sep 28 18:26:12 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.56:123 (ntp.ubuntu.com).
Sep 28 18:26:22 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 91.189.91.157:123 (ntp.ubuntu.com).
Sep 28 18:26:32 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.57:123 (ntp.ubuntu.com).
Sep 28 18:26:43 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.58:123 (ntp.ubuntu.com).
Sep 28 18:26:53 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 91.189.94.4:123 (ntp.ubuntu.com).
Sep 28 19:01:11 akri-ubuntu1 systemd-timesyncd[786]: Timed out waiting for reply from 185.125.190.56:123 (ntp.ubuntu.com).
xxxxxxxxxx:/var/log$ ping 185.125.190.58
PING 185.125.190.58 (185.125.190.58) 56(84) bytes of data.
64 bytes from 185.125.190.58: icmp_seq=1 ttl=55 time=212 ms
64 bytes from 185.125.190.58: icmp_seq=2 ttl=55 time=213 ms
64 bytes from 185.125.190.58: icmp_seq=3 ttl=55 time=212 ms
64 bytes from 185.125.190.58: icmp_seq=4 ttl=55 time=213 ms
^C
--- 185.125.190.58 ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7007ms
rtt min/avg/max/mdev = 212.898/212.971/213.064/0.613 ms
xxxxxxxxxx:/var/log$ ping 91.189.94.4
PING 91.189.94.4 (91.189.94.4) 56(84) bytes of data.
64 bytes from 91.189.94.4: icmp_seq=1 ttl=54 time=228 ms
64 bytes from 91.189.94.4: icmp_seq=2 ttl=54 time=228 ms
64 bytes from 91.189.94.4: icmp_seq=3 ttl=54 time=228 ms
64 bytes from 91.189.94.4: icmp_seq=4 ttl=54 time=228 ms
^C
--- 91.189.94.4 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 228.622/228.747/228.878/0.318 ms
xxxxxxxxxx:/var/log$ cat /etc/systemd/timesyncd.conf
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See timesyncd.conf(5) for details.

[Time]
#NTP=
#FallbackNTP=ntp.ubuntu.com
#RootDistanceMaxSec=5
#PollIntervalMinSec=32
#PollIntervalMaxSec=2048
xxxxxxxxxx:/var/log$