Harstad Kiruna Lund Oslo Penguin Stamsund RPi 1  3  4  5  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  28 29 Pixie Condor Drammen Floro Ystad Web srv
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NTP Timekeeping - notes, overview, the best or the rest

FreeBSD
NTP offset graph Pixie
Linux 3.2.63-2
GPS-18 puck
roof-mounted

kernel-mode PPS-synced NTP
 
Linux Raspberry Pi 1  
NTP offset graph Raspberry Pi 1
Linux 3.6.11
Adafruit MTK3339
RX in unheated cupboard

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 3  
NTP offset graph Raspberry Pi 3
Linux 3.6.11 #2
U-blox 6M module
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 4  
NTP offset graph Raspberry Pi 4
Linux 3.6.12.35+ #730
U-blox 5S module
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 5  
NTP offset graph Raspberry Pi 5
Linux 3.6.11 #2
U-blox 7Q module on
Raspberry Pi GPS Addon Board
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 6  
NTP offset graph Raspberry Pi 6
Linux 3.12.35+ #730
Was: U-blox 7Q module on
Raspberry Pi GPS Addon Board
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 7  
NTP offset graph Raspberry Pi 7
Linux 3.12.34+ #727
U-blox 7Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 8  
NTP offset graph Raspberry Pi 8
Linux 3.18.5-v7+ #746
U-blox 7Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 9  
NTP offset graph Raspberry Pi 9
Linux 3.18.5-v7+ #746
U-blox M8Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 

Other periods: day week month year

PCNTP version on 2025-Apr-09 at 23:34 UTC
Linux PCs
Pixie"ntpd 4.2.8p11@1.3728 Tue Mar 6 07:51:46 UTC 2018 (1)"
RasPi-1"ntpd 4.2.8p11@1.3728-o Wed Feb 28 09:21:50 UTC 2018 (1)"
RasPi-3(currently offline)
RasPi-4"ntpd 4.2.8p11@1.3728-o Wed Feb 28 09:21:50 UTC 2018 (1)"
RasPi-5"ntpd 4.2.8p11@1.3728-o Wed Feb 28 09:21:50 UTC 2018 (1)"
RasPi-8"ntpd 4.2.8p10@1.3728-o Sat Mar 10 18:03:33 UTC 2018 (1)"
RasPi-9"ntpd 4.2.8p12@1.3728-o (1)"
RasPi-10"ntpd 4.2.8p11@1.3728-o Wed Feb 28 09:21:50 UTC 2018 (1)"
RasPi-11"ntpd 4.2.8p15@1.3728-o Wed Sep 23 11:46:38 UTC 2020 (1)"
RasPi-12"ntpd 4.2.8p12@1.3728-o (1)"
RasPi-13"ntpd 4.2.8p10@1.3728-o Sat Mar 10 18:03:33 UTC 2018 (1)"
RasPi-14"ntpd 4.2.8p11@1.3728-o Wed Feb 28 09:21:50 UTC 2018 (1)"
RasPi-15"ntpd 4.2.8p15@1.3728-o Wed Sep 23 11:46:38 UTC 2020 (1)"
RasPi-16"ntpd ntpsec-1.2.2"
RasPi-17"ntpd ntpsec-1.2.2"
RasPi-18"ntpd 4.2.8p11@1.3728-o Tue Mar 20 11:57:43 UTC 2018 (1)"
RasPi-19"ntpd ntpsec-1.2.2"
RasPi-20"ntpd 4.2.8p12@1.3728-o (1)"
RasPi-22"ntpd 4.2.8p15@1.3728-o Wed Sep 23 11:46:38 UTC 2020 (1)"
RasPi-23"ntpd 4.2.8p15@1.3728-o Wed Sep 23 11:46:38 UTC 2020 (1)"
RasPi-24"ntpd 4.2.8p12@1.3728-o (1)"
RasPi-25"ntpd 4.2.8p12@1.3728-o (1)"
RasPi-26(currently offline)
RasPi-28"ntpd ntpsec-1.2.2"
RasPi-29"ntpd ntpsec-1.2.2"
Windows PCs
Harstad"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Kiruna"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Lund"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Oslo"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Penguin"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Stamsund"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Portable PCs
Condor(currently offline)
Drammen"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
Floro"ntpd 4.2.8p17@1.4021-o Aug 22 8:44:21.78 (UTC+01:00) 2023 (1)"
Ystad"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"

Network configuration
NTP event log

 
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