Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » Time zone bug

Page: 1 2 Next

Posted by
ybw_Kingfisher


Users avatar

Posts
7
Registered at
2008-10-03 09:15:26
2009-09-01 09:06:22 - Time zone bug
I'm currently in Astana (UTC+7), instead of Brussels (UTC+2). What I do is I just change the clock of the computer, instead of changing my time zone. So I just move the clock forward 5hrs, while the time zone remains Brussls-Paris, otherwise Outlook starts to mess up my appointments.
But when I look at the UTC clock in the Sailonline clock, it gives me UTC as Astana time minus two hours. Example:
It is now 1500hrs in Astana, 10000hrs in Brussels, 0900 UTC. The clock tab on screen of the client gives 1300hrs as UTC. When I give a delayed command, I see in the list of timed commands that there the correct UTC is used.

So let me guess: the time tab calculates UTC by taking the time of the PC and the time zone the PC is set against and then calculates the offset? WHile the timed commands use the actual time of the server? So if your computer and the server are out of synch, your delayed commands could be too?

Rammed another island today, but that is because the predictive position in this game is still a game of pure chance.
Posted by
NZL_PaulR


Users avatar

Posts
311
Registered at
2008-07-22 12:21:30
2009-09-01 09:26:08 - Re: Time zone bug
Do you have Windows Vista?
There you can have 3 clocks if you left click on the time in bottom right of screen; Set (leave) your main clock @ Brussels time. set 2nd clock @ UTC and the third whereever you travel to and are at in the world.

Try it.
If it breaks, it's not strong enough!
Posted by
Schakel


Users avatar

Posts
183
Registered at
2008-12-19 09:19:00
2009-09-01 10:24:45 - Re: Time zone bug
ybw_Kingfisher said @ 2009-09-01 09:06:22:
Example:
It is now 1500hrs in Astana, 10000hrs in Brussels, 0900 UTC. The clock tab on screen of the client gives 1300hrs as UTC.
The problem may lie in the Brussels - UTC bit. 1000 Brussels is 0800 UTC, not 0900.
Posted by
Schakel


Users avatar

Posts
183
Registered at
2008-12-19 09:19:00
2009-09-01 10:29:50 - Re: Time zone bug
On second thought,I checked at http://tinyurl.com/ox3a6g (www.timeanddate.com) and it lists Astana as UTC+6 hours.

Posted by
Jeroen


Users avatar

Posts
245
Registered at
2007-08-15 09:17:47
2009-09-01 11:10:04 - Re: Time zone bug
To comment on your technical bit of the question, all times are UTC both on the client side as well as the server side.
This is done to eliminate any time conversions.
So there is no relation between the time displayed and the computers clock.

The bigest factor in a incorrect delay is weather updates. They have a big influence on the speed and direction if on TWA.
And there is a certain amount of error in the predicion line, due to rounding of numbers.

Some of the interface like the prediction line, can give the impression to be exact but they do have some margins to take into account on the longer delays.

--- Last Edited by Jeroen Tiel at 2009-09-01 11:11:45 ---
I am a ex-admin of SOL who joins in from time to time.
Posted by
ybw_Kingfisher


Users avatar

Posts
7
Registered at
2008-10-03 09:15:26
2009-09-01 12:18:14 - Re: Time zone bug
Jeroen said @ 2009-09-01 11:10:04:
To comment on your technical bit of the question, all times are UTC both on the client side as well as the server side.
This is done to eliminate any time conversions.
So there is no relation between the time displayed and the computers clock.
Not so: I can give you a screenprint which shows 12:00 UTC on the main clock and a delayed command to be implemented at 09:30, so which technically is long passed.

Jeroen said @ 2009-09-01 11:10:04:
The bigest factor in a incorrect delay is weather updates. They have a big influence on the speed and direction if on TWA.
And there is a certain amount of error in the predicion line, due to rounding of numbers.

Some of the interface like the prediction line, can give the impression to be exact but they do have some margins to take into account on the longer delays.

--- Last Edited by Jeroen Tiel at 2009-09-01 11:11:45 ---


So any delayed course change is an exercice in pure luck, rather than navigational skill?

Posted by
Jeroen


Users avatar

Posts
245
Registered at
2007-08-15 09:17:47
2009-09-01 13:29:05 - Re: Time zone bug
No its not just pure luck, as I explained there are some factors that can throw off a delayed command. On the short run they are reliable and on the long run they can be a bit less acurate.

Its just a factor to take into account when you use them.
I am a ex-admin of SOL who joins in from time to time.
Posted by
tatimanarere


Users avatar

Posts
14
Registered at
2009-05-27 08:06:55
2009-09-12 08:27:30 - Re: Time zone bug
For those in the Antipodes it would be useful to see the date displayed with the time, so we can be sure actual time difference with local time. Especially handy for starting as a mix up in days/nights can waste places quickly.
Posted by
NZL_PaulR


Users avatar

Posts
311
Registered at
2008-07-22 12:21:30
2009-09-12 11:30:39 - Re: Time zone bug
Had we started a race at: 09:09 on 09-SEP-09 we would have been without too much confusion!!
If it breaks, it's not strong enough!
Posted by
tatimanarere


Users avatar

Posts
14
Registered at
2009-05-27 08:06:55
2009-09-12 11:35:27 - Re: Time zone bug
a bit too much luck with all those 9's

Page: 1 2 Next

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

New Ice Age 2026 - Scott Base to Neumayer Station


To complete our DN circumnavigation of Antarctica and our 4-race ice-boat marathon series, we continue clockwise, now departing from Scott Base back to Neumayer Station. It’s about 3500nm back as well, which, as said if there’s wind at all, should, well-wrapped in your DN-cockpits, not take you much more than five days. And remember: charts down here are unreliable – what is land and what is ice?!
Race #1971
INFOby brainaid.de
DN PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: NIA - SYC
Race starts: Aug 27th 07:00 Registration Open!
▶ Flash
GO TO RACE

Cross the Convergence 2026 - Tenerife to Fernando de Noronha


The sixth race of our series of ocean voyages across the World’s convergence zones takes us back up the Atlantic to Tenerife, from whence we will depart on a classic transatlantic passage to Brazil’s Fernando de Noronha. It’s 2150nm as the albatross flies, but you will undoubtedly have to take some and sometimes sudden detours to get your Volvo 70v4 through the doldrums stretching across your path from the Amazon to the Niger.
Race #1986
INFOby brainaid.de
Volvo 70v4PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
Race starts: Aug 23rd 18:00 Registration Open!
▶ Flash
GO TO RACE

Palk Bay TIMED Race 2026

This month’s TIMED race takes us to the shallow waters of Palk Bay located between India and Sri Lanka. Sail the impressive MC 38 around a roughly 140 nm course through two narrow channels before returning to the start/finish line in Jaffna.
This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have two weeks to test your skill and decision making after the race opens.
Race #2054
INFOby brainaid.de
PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ3 - TRCH - SYC
RACE CLOSE: Saturday,
29 August at 23:00 UTC
Race starts: Aug 16th 12:00 Registration Open!
▶ Flash
GO TO RACE

The British Isles Circumnavigation 2026


The British Isles Circumnavigation is here! Inviting skippers to take on an epic 1,720nm clockwise voyage around Britain and Ireland! Starting and finishing in Cowes, the course passes some of the most iconic landmarks in offshore sailing, including Fastnet Rock, Tearaght Lighthouse, Black Rock, St. Kilda and Muckle Flugga before the long run home. Racing in our fast and versatile TP52, this Super-Buddy Championship race will reward smart routing, changing weather strategy and sustained concentration over every mile. Good luck!
Race #2052
INFO by brainaid.de
TP-52 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SUPBUD - SYC
RACE CLOSE: Tuesday,
August 25 at 2300 UTC.
Race starts: Aug 09th 10:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member KaSToR
  2. Sailonline Yacht Club Member CriticalHippo
  3. Sailonline Yacht Club Member WRmirekd
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member Panpyc
  6. Sailonline Yacht Club Member cdhinman
  7. Sailonline Yacht Club Member rthinman
  8. Sailonline Yacht Club Member ms0689
  9. Sailonline Yacht Club Member BRENTGRAY
  10. Sailonline Yacht Club Member Sax747

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client