Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-04-2011, 11:29   #31
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,316
Re: What Clock to Choose for Celestial Navigation ?

This site is also nice if you sit in a 3rd world cafe and wonder if you loved ones back home will love, or hate, your early / late call:

World Time Clock & Map - Check Current Local Time Around the World

WARNING: NOT TO BE USED FOR CELESTIAL NAVIGATION ;-)

b.
__________________

barnakiel is offline   Reply With Quote
Old 15-05-2018, 12:42   #32
Registered User

Join Date: Feb 2016
Posts: 1
Re: What Clock to Choose for Celestial Navigation ?

just get a cheap atomic watch, they auto correct from radio or gps
__________________

Matwill is offline   Reply With Quote
Old 16-05-2018, 03:26   #33
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 32,211
Images: 240
Re: What Clock to Choose for Celestial Navigation ?

Greetings and welcome aboard the CF, Matwill.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 16-05-2018, 04:04   #34
Registered User
 
Suijin's Avatar

Join Date: Feb 2013
Location: Annapolis MD; currently in Oriental NC
Boat: Valiant 40
Posts: 3,319
Re: What Clock to Choose for Celestial Navigation ?

Quote:
Originally Posted by GordMay View Post
I never noticed that before, Tony.
I wonder why the accuracy varies, like that?
I suspect it's a function of network delay. The site monitors congestion/lag between it and you and calculates the potential difference between their very accurate clock and what is displayed on your web page when it loads. If you have a very good connection it's probably down in the milliseconds.
Suijin is offline   Reply With Quote
Old 16-05-2018, 04:22   #35
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 3,858
Re: What Clock to Choose for Celestial Navigation ?

Quote:
Originally Posted by bill good View Post
GPS time is the most accurate.
Can be well out from UTC though.

Quote:
The GPS navigation message includes the difference between GPS time and UTC. As of January 2017, GPS time is 18 seconds ahead of UTC because of the leap second added to UTC December 31, 2016. Receivers subtract this offset from GPS time to calculate UTC and specific timezone values. New GPS units may not show the correct UTC time until after receiving the UTC offset message.
__________________

conachair is offline   Reply With Quote
Reply

Tags
celestial navigation, navigation

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Celestial Navigation Fun ! UnlikelyVoyager Navigation 33 15-12-2011 13:33
Celestial Navigation SkiprJohn Navigation 45 29-12-2008 22:15
celestial navigation koneko Challenges 0 06-09-2008 04:04
celestial navigation mangomuffins Navigation 41 05-06-2008 09:22
Celestial Navigation Primer? bmiller Navigation 17 09-03-2008 04:24



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:43.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.