kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ timedatectl
               Local time: Fri 2026-09-11 16:04:18 JST
           Universal time: Fri 2026-09-11 07:04:18 UTC
                 RTC time: Fri 2026-09-11 07:04:18
                Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
kazulog@sv1:~$ systemctl is-active chrony systemd-timesyncd
active
inactive
kazulog@sv1:~$ chronyc tracking
Reference ID    : B97DBE7B (ntp-nts-3.ps5.canonical.com)
Stratum         : 3
Ref time (UTC)  : Fri Sep 11 07:04:14 2026
System time     : 0.006749663 seconds slow of NTP time
Last offset     : +0.000329543 seconds
RMS offset      : 0.011192468 seconds
Frequency       : 5.660 ppm fast
Residual freq   : +1.560 ppm
Skew            : 1.131 ppm
Root delay      : 0.232519612 seconds
Root dispersion : 0.001222409 seconds
Update interval : 64.6 seconds
Leap status     : Normal
kazulog@sv1:~$ chronyc sources -v
  .-- Source mode  '^' = server, '=' = peer, '#' = local clock.
 / .- Source state '*' = current best, '+' = combined, '-' = not combined,
| /             'x' = may be in error, '~' = too variable, '?' = unusable.
||                                                 .- xxxx [ yyyy ] +/- zzzz
||      Reachability register (octal) -.           |  xxxx = adjusted offset,
||      Log2(Polling interval) --.      |          |  yyyy = measured offset,
||                                \     |          |  zzzz = estimated error.
||                                 |    |           \
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ ntp-nts-2.ps5.canonical.>     2   6   377     4  +9959us[+9959us] +/-  116ms
^* ntp-nts-3.ps5.canonical.>     2   6   377     6    +10ms[  +10ms] +/-  117ms
^- ntp-nts-2.ps6.canonical.>     2   6   377     6    -43ms[  -42ms] +/-  172ms
^+ ntp-nts-3.ps6.canonical.>     2   6   377     6    -41ms[  -41ms] +/-  170ms
^- ntp-nts-1.ps5.canonical.>     2   6   377     6    +13ms[  +13ms] +/-  119ms
kazulog@sv1:~$ chronyc sourcestats
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
ntp-nts-2.ps5.canonical.>   8   6   265     +6.243     21.595    +10ms  1036us
ntp-nts-3.ps5.canonical.>   8   6   265     -4.109     30.641  +9261us  1521us
ntp-nts-2.ps6.canonical.>   8   4   264    -16.431    200.811    -37ms  7342us
ntp-nts-3.ps6.canonical.>   8   6   265    -30.169    207.947    -38ms  7325us
ntp-nts-1.ps5.canonical.>   8   5   266     +9.118     40.163    +11ms  1702us
kazulog@sv1:~$ ls /etc/chrony/ /etc/chrony/conf.d/ /etc/chrony/sources.d/ 2>&1
/etc/chrony/:
chrony.conf  chrony.keys  conf.d  nts-bootstrap-staging-ubuntu.crt  nts-bootstrap-ubuntu.crt  sources.d

/etc/chrony/conf.d/:
README  ubuntu-nts.conf

/etc/chrony/sources.d/:
README  ubuntu-ntp-pools.sources