How to Update Date and Time of Raspberry Pi With out Internet

Question

I have connect my Raspberry Pi to LAN but there is no internet available  Is there any method to update raspberry pi date time by using a PC  windows 7  in LAN  I want to get computer date and time to my Raspberry Pi when it is booting

User · Answer

Remember that Raspberry Pi does not have real time clock. So even you are connected to internet have to set the time every time you power on or restart.

This is how it works:

Type sudo raspi-config in the Raspberry Pi command line
Internationalization options
Change Time Zone
Select geographical area
Select city or region
Reboot your pi

Next thing you can set time using this command

sudo date -s "Mon Aug  12 20:14:11 UTC 2014"

More about data and time

man date

When Pi is connected to computer should have to manually set data and time

User · Answer

Thanks for the replies  What I did was  1  I install meinberg ntp software application on windows 7 pc   softros ntp server is also possible   2  change raspberry pi ntp conf file  for auto update date and time   server xxx xxx xxx xxx iburst server 1 debian pool ntp org iburst server 2 debian pool ntp org iburst server 3 debian pool ntp org iburst   3  If you want to make sure that date and time update at startup run this python script in rpi   import os  try      client   ntplib NTPClient       response   client request  xxx xxx xxx xxx   version 4      print                                            print  Offset     str response offset      print  Version     str response version      print  Date Time     str ctime response tx time       print  Leap     str ntplib leap to text response leap       print  Root Delay     str response root delay      print  Ref Id     str ntplib ref id to text response ref id       os system  sudo date -s    str ctime response tx time            print                                        except      os system  sudo date       print  NTP Server Down Date Time NOT Set At The Startup      pass   I found more info in raspberry pi forum

User · Answer

You will need to configure your Win7 PC as a Time Server  and then configure the RasPi to connect to it for NTP services   Configure Win7 as authoritative time server  Configure RasPi time server lookup

[raspberry-pi] How to Update Date and Time of Raspberry Pi With out Internet

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