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:

Christmas to Christmas Island 2025

Two waypoints, start and finish, and between them 5827 NM of two oceans. Not much time if we want to sit at the Christmas Eve table. You will need to maintain an average speed of over 10 knots, maybe quite possible with this Maxi Trimaran, but prepare your vessel well and choose the best of the many possible routes. Hands up everyone who knew there were TWO Christmas Islands?! OK, maybe you have sailed this Sailonline course before... but it's time to get ready for the 2025 challenge of racing between Christmas Island in the Pacific to Christmas Island in the Indian Ocean! It also marks the conclusion of our prestigious Ocean Race Championship 2025. Please have fun! Fair winds!
PRIZE: SMPF
Race #1967
INFO by brainaid.de
Maxi Trimaran PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ4 - OCCH - SUPSOL - SYC
Race starts: Dec 01st 11:00 Registration Open!
▶ Flash
GO TO RACE

Andaman Islands PYOC 2025


The Andaman Islands are an archipelago, made up of 200 islands, in the northeastern Indian Ocean. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between the Bay of Bengal to the west and the Andaman Sea to the east. These waters will be the theater of our next 240nm race in the ARCH 2025 series. Which one you choose depends only on you, i.e. your Elan 410 sport will leave the Andaman Islands on the starboard or port side.
Race #1965
INFO from brainaid.de
Elan 410 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ4 - ARCH - SUPSOL - SYC
RACE CLOSE: Monday,
December 1 at 2300 UTC.
Race starts: Nov 24th 17:00 Registration Open!
▶ Flash
GO TO RACE

Sinbad by Balloon 2025 - Carnarvon to Dondra


From here, our home in Bharatavarṣa is now north west of us – said Sinbad to his fellow balloonists. Perhaps we can ride the wind first further north, and then catch the winds that every year bring the rain, perhaps not. It’s 2600nm and we could be aloft awhile, so, Master el-Quarters, victuals only, no sandbags, provisioning the giant hamper. It will be not a picnic!
Race #1886
INFOby brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - SBB
RACE CLOSE: Tuesday,
December 9 at 2300 UTC.
Race starts: Oct 15th 11:00 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 CollegeFund
  6. Sailonline Yacht Club Member vida
  7. Sailonline Yacht Club Member bonknhoot
  8. Sailonline Yacht Club Member BRENTGRAY
  9. Sailonline Yacht Club Member sassy63
  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