[SADXA] LOTW and date time correlation

[Rex Turvin]

The time time difference for LOTW is plus or minus 30 minutes. For Clublog it is 15 minutes73 NR6M
 ex: KF7NMD

Sincerely,
 Rex Turvin

Vice President CADXA
 www.nr6m.com

      From: Jim W <wysocki1 at mindspring.com>
 To: Southern AZ DX Association E-Mail Reflector <sadxa at mailman.qth.net> 
 Sent: Saturday, April 23, 2016 2:01 PM
 Subject: Re: [SADXA] LOTW and date time correlation
   
I think you're right, Ron.  After it computes that number the LotW 
program gives you a timeslot band of (I think)  plus or minus 20 
minutes.  If the difference between your computed time and that of the 
other station falls within that interval, you both get the QSO confirmed.

ClubLog has a tighter tolerance band than does LotW.  If I recall 
correctly it's only plus or minus ten minutes, so you could have a match 
on LotW and still not get a hit out of ClubLog.

Jim  W9FI


On 4/23/2016 12:44 PM, Ron Jones wrote:
> I had a similar question some time ago and from my memory, the software
> converts time to an almost Julian time, where the date and time of day are
> encoded into one big number that is so many hours from some reference date a
> few decades ago. Therefore, the roll over date problem takes care of itself.
> I am recalling this from a discussion long ago when I was setting up LOTW,
> but I'm pretty sure I'm right.
>
> 73
> Ron K7RJ
>
>
>
> -----Original Message-----
> From: SADXA [mailto:sadxa-bounces at mailman.qth.net] On Behalf Of Tom Kramer
> Sent: Saturday, April 23, 2016 11:24 AM
> To: CADXA SHARE; SADXA Reflector
> Subject: [SADXA] LOTW and date time correlation
>
> Does anyone know how LOTW handles QSOs around the time of a day change?
>
> For example if I upload a QSO that I logged at 00:02z April 17
> but because my battery clock is fast and the actual UTC is 23:58 April 16,
> will LOTW compensate for this?
>
> I have 6-8 QSOs from NPOTA PV13 that were made around 2359/0000z April
> 17/18.
>
> Thanks for any feedback,
> Tom NQ7R
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