Adjust arrival time across time zones

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Re: Adjust arrival time across time zones

Postby AlanOfTheBerg » Wed Dec 19, 2012 6:47 pm

This has been discussed before with Waze and it would seem that this would be exceedingly difficult to do due to the non-linear nature of time zones and uncertainty about whether a particular country, state/province, county, or city subscribes to the use of daylight saving time. Crossing one time zone to another may not actually change time, or sometimes it does. I'm not sure there's a mathematical formula available like there is for dawn/dusk calculation.
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Re: Adjust arrival time across time zones

Postby AlanOfTheBerg » Sun Mar 09, 2014 5:39 am

shane8750 wrote:How about where to change time zone? It's always saying i'm arrive 5 hours ahead of what it is, but the minutes are correct. I never entered a time zone but can't find anywhere to correct the issue.

Please post a screenshot showing the wrong time ETA.
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Re: Adjust arrival time across time zones

Postby hansadj » Fri May 12, 2017 7:35 pm

I do not agree that giving me an ETA in local time at my destination is either difficult or undesirable. Most of the time, especially when I use the "later" feature I need to be at my destination at a certain local time. Most of the time this is to catch a plane or meet someone.
There is not a place on this planet that Google won't tell me what it's time zone and current (or any other) time is. This is what we always called a SMOP (Small Matter of Programming). Most programming languages provide this time service. Airline tracking software handles it for flights in real time.
Just saying!
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Re: Adjust arrival time across time zones

Postby hansadj » Fri May 12, 2017 7:38 pm

BTW, Maps on my Iphone does it correctly.
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Re: Adjust arrival time across time zones

Postby katz518 » Thu Feb 02, 2017 2:34 am

Nearly missed my flight because of this! Didn't realize that Henderson, Kentucky is on a different time zone than Louisville, Kentucky!
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Re: Adjust arrival time across time zones

Postby mikecbos » Fri Oct 13, 2017 11:19 am

Please note in the attached screenshot where the ETA is according to departure time zone. Along the route, the time zone will move the clock one hour ahead, whereby the ETA will be an hour later... very serious flaw were the trip's destination and departure locations were reversed, like it was for me...
Attachments
Screenshot_20171013-061301.jpg
Departure location= Nashville, TN
Destination= Louisville, KY
(120.67 KiB) Downloaded 24 times
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Re: Adjust arrival time across time zones

Postby shaneracer » Sat Mar 08, 2014 2:11 am

How about where to change time zone? It's always saying i'm arrive 5 hours ahead of what it is, but the minutes are correct. I never entered a time zone but can't find anywhere to correct the issue.
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Re: Adjust arrival time across time zones

Postby speedlever » Mon Jul 13, 2015 2:23 pm

I just encountered this yesterday in a drive from Memphis, TN (Central) to NC (Eastern). The initial ETA was based on Memphis time. When I crossed the time zone boundary and the time reset on my phone, the ETA updated to the real ETA of the destination time zone.

I don't know why it would be difficult for Waze to know the destination time zone and display the correct ETA based on the destination time zone, not just when the device enters the destination time zone.

For the user that commutes from Knoxville to Nashville, I would expect your ETA would change accordingly too, once you enter the Central time zone. So what would the difference be if it shows the destination ETA from the beginning?

Basically, you can't share the ETA (accurately) until you cross the destination time zone boundary. IMO, the ETA should always be based on the destination time zone.

I have 3 NAV apps on my Galaxy S4: Waze, Maps, and Here. Of those, only Here provides the correct arrival time using the destination time zone. But it displays the drive as being an hour longer than either Waze or Maps. Go figure.
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Re: Adjust arrival time across time zones

Postby speedlever » Mon Jul 13, 2015 7:30 pm

Thanks for that info Rich. Perhaps it's not as simple as I thought! According to Google, there are multiple locations in the USA that do not observe DST:

"States and territories in the United States that do not observe daylight saving time, aside from most of Arizona, include: Hawaii, American Samoa, Guam, Puerto Rico, and the Virgin Islands. Some parts of Indiana did not observe daylight saving time in the past."

That being said, with all the data available online, I would think getting the current time status of a location should not be that difficult if I can be routed to it.
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Re: Adjust arrival time across time zones

Postby speedlever » Mon Jul 13, 2015 8:09 pm

I assume ROTW = rest of the world. Hmm. Oh well, it would be nice if the destination info included a time indicator indicating difference from GMT and when/if DST is observed. Then the app should have a simple job of calculating/displaying the ETA from that data. Perhaps that indicator is the missing link. ;)
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