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
WAN Network Timekeeping CPU/mem  EUMETCast Europe  DVB-S2 Ecast I/O Losses HVS losses RAMdisk T1/T2 Air °C  ADS-B GPS DOP SNR NTP jitter  How-to

NTP Timekeeping - notes, overview, the best or the rest

 
Stratum-1 Windows PCs
NTP offset graph PC Alta
 Intel i5-760, 8 GB
Windows-10/64 Pro
EUMETCast RX & process
Interactive
 
Sure GPS & PPS reference
NTP offset graph PC Bacchus
 Intel PIII 550 MHz, 512 MB
Windows 2000 SP4 Server
APT Receiver

GPS 18 LVC & PPS reference

NTP offset graph

PC Kiruna
 Intel i7-4770, 16 GB
Windows-10/64 Pro
Interactive use

GPS 18 LVC & PPS reference

NTP offset graph

PC Stamsund
 Intel i5-3330, 8 GB
Windows-10/64 Pro
EUMETCast receive and process
Ship Plotter, file server

GPS 18x LVC & PPS reference

Red is positive offset, blue is negative offset
Click on a graph for weekly, monthly and yearly data


Other periods: day week month year

Active NTP Versions

PCNTP version on 2025-Apr-09 at 11:04 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"ntpd 4.2.8p15a-o Apr 19 11:24:08 (UTC+02:00) 2023 (1)"
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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