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:

Cross the Convergence 2026 - Robinson Crusoe to Galapagos


Welcome to our first race of a new series of ocean voyages across the World’s convergence zones, this first race taking you north from south of the Tropic of Capricorn to the Equator-straddling Galapagos, home of magical iguanas and other exotic fauna (but no mythical kings, Dory) Departing from the island where in 1704 adventurer Alexander Selkirk inspired Daniel Defoe to write the best-seller "The Life and Adventures of Robinson Crusoe", by debarking off the unsound "HMS Cinque Ports", four months before she foundered off the coast of present-day Colombia, we will sail the 2200nm in our decidedly sounder and faster than the " Cinque Ports",
Ocean 50 !
Race #1983
INFOby brainaid.de
Ocean 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: CCZ - SYC
Race starts: Jan 16th 18:00 Registration Open!
▶ Flash
GO TO RACE

Bight of Bonny TIMED Race 2026

Welcome to the first TIMED race of 2026! Our race finds us in the Gulf of Guinea and the Bight of Bonny. Starting in Douala, Cameroon the 170 nm course takes us around the island of Bioko with its Caldera and tropical rainforests finishing in Calabar, Nigeria. The boat for this race is the sporty Farr 30. This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #2004
INFOby brainaid.de
Farr 38 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ1 - TRCH - SYC
RACE CLOSE: Saturday,
24 January at 23:00 UTC
Race starts: Jan 11th 12:00 Registration Open!
▶ Flash
GO TO RACE

Natuna Sea Race 2026


At 4.0N 108.2E lies the island of Natuna Besar, Great Natuna, surrounded by at least 154 islands, of which 127 uninhabited, Indonesia’s Natuna Regency, and all around this archipelago, the Natuna Sea, bordered by Borneo to the east, the Java Sea to the south, and the Malay peninsula to the west, and extending north to cross a disputed international border with China into the South China Sea. And it’s a border that matters, there’s gas here! But why worry, let’s race – 2050nm in our goo’ol’ Open 60s in between the production platforms, prowling destroyers and submarines.
Race #1997
INFOby brainaid.de
Open 60 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Jan 06th 17:00 Registration Closed
▶ Flash
GO TO RACE

Cape Town to Rio 2026

Welcome to South Africa and RCYC's classic transatlantic Cape2Rio Race from Cape Town, South Africa, to Rio de Janeiro, Brazil. First run in 1971, this run is buddied with the IRL, Cape2Rio 2025 arranged by the Royal Cape Yacht Club with the cooperation of the
Iate Clube do Rio de Janeiro Despite this being announced the 2025 race (starting dec. 27) it is the 2026 SOL championship kickoff. This virtual version, will be raced once again in Mark Mills' 74ft speedster, the stunning C2R74.
Race #1996 INFO
by brainaid.de
C2R74 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ1 - OCCH - SUPBUD - SYC
Race starts: Dec 27th 12:00 Registration Closed

▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member KaSToR
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member vida
  6. Sailonline Yacht Club Member bonknhoot
  7. Sailonline Yacht Club Member Sax747
  8. Sailonline Yacht Club Member rumskib
  9. Sailonline Yacht Club Member CollegeFund
  10. Sailonline Yacht Club Member Panpyc

View full list

Series

Mobile Client

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

The mobile client