NTP synchronized: no

[Patrick Dupre]

Hello,

In fedora 22, how do I synchronize the ntp:
timedatectl 
      Local time: Mon 2015-09-07 17:04:58 CEST
  Universal time: Mon 2015-09-07 15:04:58 UTC
        RTC time: Mon 2015-09-07 17:04:58
       Time zone: Europe/Paris (CEST, +0200)
     NTP enabled: yes
NTP synchronized: no
 RTC in local TZ: yes
      DST active: yes
 Last DST change: DST began at
                  Sun 2015-03-29 01:59:59 CET
                  Sun 2015-03-29 03:00:00 CEST
 Next DST change: DST ends (the clock jumps one hour backwards) at
                  Sun 2015-10-25 02:59:59 CEST
                  Sun 2015-10-25 02:00:00 CET

chronyc sources
210 Number of sources = 4
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^? y.ns.gin.ntt.net              0   8     0   10y     +0ns[   +0ns] +/-    0ns
^? ks3370497.kimsufi.com         0   8     0   10y     +0ns[   +0ns] +/-    0ns
^? gw1.networkschool.org         0   8     0   10y     +0ns[   +0ns] +/-    0ns
^? ip139.ip-5-196-160.eu         0   8     0   10y     +0ns[   +0ns] +/-    0ns



===========================================================================
 Patrick DUPRÉ                                 | | email: pdupre at gmx.com
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================