Retrieving Date and Time From The Internet
stephenREVOLUTION2 at barncard.com
Wed Aug 17 01:35:55 EDT 2011
I thought it could be done directly with a time server, and one can!
I did some dicking around with sockets and made this up.
this uses the Daytime Protocol
-- returns UTC time in RFC-867 (Daytime) format
-- sqb @ the house of cubes
put "time-C.timefreq.bldrdoc.gov:13" into pServerURL
set the socketTimeoutInterval to 1000
open socket to pServerURL
write "" to socket pServerURL
read from socket pServerURL for 49
put it into a
put the result into b
close socket pServerURL
delete line 1 of a
55790 11-08-17 04:57:45 50 0 0 102.3 UTC(NIST) *
note that everything one needs is here, including the year.
This clock data is read directly from a source that is mission critical and
cannot go down.
THe only caveat: if you are on a LAN then you must open up port 13 on the
The NIST format <http://www.boulder.nist.gov/timefreq/service/its.htm> : is
* JJJJJ YR-MO-DA HH:MM:SS TT L H msADV UTC(NIST) OTM*
JJJJJ - the Julian Date is : 53746
YR-MO-DA - the Date is : 2006-01-11
HH:MM:SS - the Time in UTC is : 21:28:49
TT - Indication whether USA is on Standard Time (ST) or Daylight Saving
Time (DST) : 00 (Standard Time)
L - Leap second at the end of the month (0: no, 1: +1, 2: -1) : 0
H - Health of the server (0: healthy, >0: errors) : 0
msADV - time code advanced in milliseconds to compensate network delays :
UTC(NIST) - the originator of this time code : UTC(NIST)
OTM - on-time marker : *
hope you all can use this.
On 16 August 2011 15:11, Bob Sneidar <bobs at twft.com> wrote:
> Thanks Waren and Scott. I will have a look at those. I can extrapolate UTX
> time from those zones I suppose, and then do the math for the particular
> time zone in the system settings.
> Stephen Barncard
San Francisco Ca. USA
more about sqb <http://www.google.com/profiles/sbarncar>
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