Linked Questions
10 questions linked to/from NTP is not enabled (doesn't exist) but Pi figures out timezone and time. How?
80
votes
16
answers
419k
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.
- 1,206
11
votes
8
answers
92k
views
Raspberry Pi won't update time
I bought a Raspberry Pi 3 approximately two months ago, and since then time has never updated. Details:
The operating system is a fresh installation of Raspbian Jessie (4.1.19-v7+).
The Internet ...
- 439
3
votes
1
answer
3k
views
Recommended way for a python script to check NTP update status, and initiate an update if necessary?
I am writing a data logging python script and I would like it to find out if the system clock has been synchronized via NTP recently, and if not, to attempt to cause it to happen before proceeding.
...
- 562
0
votes
3
answers
407
views
How to sync clock on raspberry pi with restricted internet traffic
I have a few raspberry pi's operating at a customer facility, and this facility has restricted the pi's traffic to only the IP of my server (digital ocean ubuntu droplet running a django application). ...
- 193
1
vote
0
answers
968
views
AC Frequency Monitoring
There are multiple hardware solutions to do amp/current monitoring, but I cant seem to find one to do AC Frequency monitoring. Anyone have a pointer to board that can handle line power and return line ...
- 111
1
vote
2
answers
547
views
How to make sure RTC is accurate
I am using a RTC.
I read the documentation for this module that it will lose a second every 24 hours.
So, I assume i have to update it myself.
After Googling I was drawn to this solution:
hwclock --...
user11286
0
votes
0
answers
380
views
How to configure the Pi to automatically sync its time with the first android device that connects to it
I have a Raspberry Pi that has no access to internet. It is configured as an access point that I can connect to using my smartphone or tablet. Time on the Raspberry Pi is never correct after booting ...
- 101
0
votes
0
answers
336
views
Raspberry pi4 does not synch to correct time after startup (ntp service running)
After startup my RPI synchs to the correct date, but the time remains about 90 minutes off (behind).
sudo ntptime gives:
sudo ntptime
ntp_gettime() returns code 5 (ERROR)
time e4e82bc8.c2d92000 Sun,...
2
votes
1
answer
146
views
How to use ntp time as default time while using Raspberry Pi as a gateway?
I am using Raspberry Pi 4 as a gateway to my esp8266 devices. I have connected ethernet to Raspberry Pi for internet connection. It works fine. I want to generate NTP time in my ESP8266 device.
When I ...
- 31
2
votes
0
answers
248
views
How to manually adjust system clock for testing purposes
I have written a Python script that is set to run different functions at different days/times. I would like to test it by setting the system clock to 1-2 minutes before the dates/times that the Python ...
- 121