NTP, Network Time Protocol for time synchronization between computer systems over UDP.

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Raspberry Pi, GPS (adafruit) and ntp does not work

How to achieve that ntpd synchronizes time from GPS? I have adafruit ultimate gps (without battery). It is connected to raspberry and i got fix. PPS pin not connected. I configured ntpd to use GPS ...
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1answer
48 views

Update time whenever possible

The Pi running Raspbian does not have a hardware clock or RTC (serial is being used by XBee) and whenever its turned off and restarted again, the time goes out of wack and we need to SSH in to ...
-2
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1answer
135 views

How to use NTP on Raspberry Pi by local NTP server

I have Raspberry Pi Model-B with the Raspbian Wheezy OS and a local NTP server. I want to synchronise my Raspberry Pi board with my local NTP server (not using the Internet). All the process must be ...
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1answer
88 views

Why my time is not correct, it is always 12 hours late

exact with the minutes but wrong with the hours. Mon Sep 8 08:54:44 BST 2014. When actually it is 20:54. I did : sudo /etc/init.d/ntp restart at least ten times no avail. My raspi activates a ...
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0answers
54 views

ntpq -p reports all available servers have stratum 16

ntpq -p reports all available servers have stratum 16. Therefor the time is cannot be set. However I can ping all the servers. ntpq -p remote refid st t when poll reach delay ...
1
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1answer
69 views

Under what conditions is the system clock running?

The Raspberry Pi has no battery powered hardware clock, so it needs to fetch time via NTP and store it via fake-hwclock to not start at 1970 again after a power-loss. When the device is running the ...
3
votes
2answers
178 views

When do I need accurate time via NTP?

The Raspberry Pi has no hardware clock, so the OS has to fetch the date and time every time when it boots if one wants accurate time. Do I need accurate NTP time at all and what use cases require it? ...
3
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3answers
2k views

NTPd is not updating time

I am running raspbian wheezy, upgraded to all the latest packages. The only custom package installed on it is Oracle's Java 8, everything else and its configuration is stock. Yesterday I noticed that ...
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0answers
179 views

NTP time off by 24 minutes

I have added dpkg-reconfigure ntp to bash.rc and run it several times in the terminal. I have changed my timezone around. I have gone to just ethernet and rebooted, and every single time, my pi time ...
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3answers
4k views

Incorrect time until I restart the ntp server (multiple times)

I am using Raspberry PI Model B with Raspbian, installed by NOOBS, upgraded to the latest version. The NTP server is automatically started in the boot process. When I boot my RPI, the time is always ...
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3answers
2k views

Can't access NTP server with a static IP address

The time on my Raspberry Pi is off by a few days. When I try $ sudo dpkg-reconfigure ntp it doesn't change the time, but some stuff comes up in the syslog: Oct 21 18:27:45 airpiClock ntpd[2142]: ...
4
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1answer
2k views

Time sync with WiFi

It looks like the ntpd doesn't get the correct time with WiFi. My Raspberry Pi's are connected via WiFi dongles (which work without problems) to my network. The odd thing is, I read that the time ...
6
votes
2answers
29k views

How to force NTPD to update date/time after boot?

The Raspberry Pi lacks a hardware clock. How do I force NTPD to update date/time immediately after every boot? I'm running Raspbian and the Raspberry Pi is connected using an Ethernet cable.
1
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3answers
5k views

Time and date in Raspbian vs. OpenELEC (one works, one not)

I've set up my Raspberry Pi from scratch with BerryBoot set up multiple OS's to boot into. Whenever I boot into 'OpenELEC 2013.01', the time and date gets set correctly, but whenever I boot into ...
3
votes
3answers
3k views

Why isn't NTPd updating local time?

I'm really happy with my Pi so far, but now that the website I'm developing on it is starting to need the time and date, I thought it was about time to get NTPd working. So I installed an NTP server ...
5
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1answer
7k views

NTPD not actually setting the time

NTPD appears to run successfully and poll the time server, however it doesn't actually set the time. # ntpd -d & ntp engine ready reply from 83.170.75.28: offset 1348642593.061240 delay ...
9
votes
4answers
5k views

How is time kept on the Raspberry Pi?

How is time kept on a Raspberry Pi with the latest Raspbian release? What sets the internal clock from an NTP server? What happens when no NTP server is available? From my program I am trying to ...