Local Time Offset |
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DavidBunin
Senior Member Joined: 20 May 2015 Location: Rockwall, TX Status: Offline Points: 742 |
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Posted: 12 Jul 2015 at 9:25pm |
I’m going to rant for a moment. Why must I set the “Local Time Offset” in the User Settings page? This thing is a figgen’ GPS! It already knows what time zone I’m in. This thing is an FMS! It knows where I’m headed. I can understand having the ability to override the offset for special cases, but there should be an “AUTO” option, and it should be the default value. David Bunin |
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brou0040
Senior Member Joined: 13 Dec 2012 Location: KIYK Status: Offline Points: 720 |
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Agree, just like how phones update as you are flying.
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MysticCobra
Senior Member Joined: 29 Jan 2013 Status: Offline Points: 656 |
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To be fair, the logic for "what is my local time-of-day" for your phone lives in your cell provider's infrastructure, not inside the phone.
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AviJake
Admin Group Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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Yeah, it's actually quite tricky. We've had it on our list of candidate features for a long time. The level of effort required has not justified the added benefit when compared to features that have made it into a specific release definition.
I frankly suspect it will remain in that category for quite some time. |
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Steve Jacobson
sjacobson@avidyne.com |
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chflyer
Senior Member Joined: 24 Jan 2013 Location: LSZK Status: Offline Points: 1026 |
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This isn't quite as simple to implement as it might seem due to the need to take daylight savings time changes in the spring and fall into consideration. I don't think this information is included in the GPS satellite signals, so a gps would need to have all the necessary date/time change tables on-board. The data also changes from year to year.
In the continental US that may not seem like such a big deal because everyone changes at the same date/time. Outside the US, there are many complications. In Canada, for example, all the provinces change in step with the US except most of Saskatchewan, some regions of British Columbia, small region of Nunavut, small region of Quebec, small region of Ontario which are on the same time year round and never change. Imagine a gps needing to always know the right Zulu delta for this geographic patchwork? Most European countries change in step with each other, but on a different weekend than the US. Other regions are worse (e.g. S. America). Take a look at this web link to get an idea of the complexity: http://www.timeanddate.com/time/dst/2015.html |
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Vince
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AviJake
Admin Group Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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Right. That's exactly what I meant with the level of effort vs the reward.
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Steve Jacobson
sjacobson@avidyne.com |
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brou0040
Senior Member Joined: 13 Dec 2012 Location: KIYK Status: Offline Points: 720 |
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I didnt realize this, and that this was a significant level of effot. |
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