Convert NTP timestamp from NTP packet to System time and date format

[Chris Angelico]

On Fri, Jan 31, 2014 at 12:34 AM, Sadia Bashir
<11msccssbashir at seecs.edu.pk> wrote:
> Hello everyone;
>
> I want to write NTP client which sends and receives NTP packet to NTP server
> and should read the value from one of the four offsets and convert it to
> user readable local or GMT time format, I specifically want to know which
> offsets should I read in order to get correct timestamp from the packet.
> Any suggestion or help will be appreciated.
>

Any time you're looking at network protocols, the one obvious place to
look is the RFCs. Just do a web search for 'rfc ntp' to find the
relevant ones. In my case, the search results pulled up a couple of
good-looking hits from ietf.org (the Internet Engineering Task Force -
those guys are the authority on this sort of matter), plus the
Wikipedia article for NTP, with a section "Relevant RFCs", which would
make good reading.

Enjoy! Networking's awesome fun.

ChrisA