$ lsb_release -r
Release:	14.04

$ dpkg -l | grep ntp
ii  ntp                                                   1:4.2.6.p5+dfsg-3ubuntu2.14.04.1                    amd64        Network Time Protocol daemon and utility programs
ii  ntpdate                                               1:4.2.6.p5+dfsg-3ubuntu2.14.04.1                    amd64        client for setting system time from NTP servers

# Fast clock:

$ sudo service ntp stop; sudo date --set "$(date -d '+2 mins')"; sudo service ntp start
 * Stopping NTP server ntpd                                                                                                                                                                             [ OK ] 
Mon Feb  2 08:04:33 GMT 2015
 * Starting NTP server ntpd                                                                                                                                                                             [ OK ] 

$ ntpq -nc peers; sleep 300; ntpq -nc peers
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 217.70.19.12    .INIT.          16 u    -   64    0    0.000    0.000   0.000
 91.206.8.34     40.179.132.91    2 u   46   64    1   49.654  -119478   0.000
 192.53.103.108  .PTB.            1 u   45   64    1   51.767  -119480   0.000
 148.251.154.36  122.227.206.195  3 u   44   64    1   40.592  -119480   0.000
 91.189.94.4     193.79.237.14    2 u   43   64    1   20.737  -119480   0.000

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 217.70.19.12    .STEP.          16 u    -   64    0    0.000    0.000   0.000
 91.206.8.34     40.179.132.91    2 u   13   64    7   46.888    1.281   1.710
 192.53.103.108  .STEP.          16 u  356   64    0    0.000    0.000   0.000
 148.251.154.36  122.227.206.195  3 u   18   64    7   44.300   -0.838   3.067
 91.189.94.4     192.93.2.20      2 u   18   64    7   20.246   -1.509   1.585


# Slow clock

$ ntpq -nc peers; sleep 300; ntpq -nc peers
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 91.212.112.71   194.160.23.2     2 u   11   64    1   47.571  120049.   0.000
 82.197.188.130  .INIT.          16 u    -   64    0    0.000    0.000   0.000
 37.122.210.134  193.79.237.14    2 u    9   64    1   24.148  120048.   0.000
 46.243.50.14    195.113.144.238  2 u    8   64    1   44.700  120053.   0.000
 91.189.94.4     192.93.2.20      2 u    7   64    1   19.777  120053.   0.000
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 91.212.112.71   194.160.23.2     2 u   45   64    3   47.635    0.224   0.121
 82.197.188.130  162.23.41.10     2 u   47   64    1   37.369    8.470   0.000
 37.122.210.134  158.43.128.33    2 u   46   64    3   22.165   -4.590   1.780
 46.243.50.14    195.113.144.238  2 u  114   64    2   45.280    4.072   0.000
 91.189.94.4     192.93.2.20      2 u   47   64    3   21.185    6.791   1.955