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HiFlyer

I wonder how FSX handles time zones.......

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Who knew it was so complicated........!

 

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great video with a laugh !

 

reminds me of something we all would have experienced ....driving near / across a timezone boundary but about 50kms before that, your cell/mobile locks on to the time of your destination (as that is now the closer transmission tower).

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In case you were interested...

 

FSX uses 15 degree divisions instead of the actual geographic boundaries for the time zones.

 

Many of us fly FSX in Realtime (Computer time, so long as it's updated), or addon software, or FSINN to get the correct time for where we are flying and any of these works terrifically.

 

Best wishes.

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In case you were interested...

 

FSX uses 15 degree divisions instead of the actual geographic boundaries for the time zones.

 

Many of us fly FSX in Realtime (Computer time, so long as it's updated), or addon software, or FSINN to get the correct time for where we are flying and any of these works terrifically.

 

Best wishes.

 

Interesting. I wonder how it does historical dates.....

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Who knew it was so complicated........!

maybe for this guy but not for pilots, they (should) use UTC time and all these problems disappear. Problem of time zones really is not part of aviation, it is for passengers to figure out what the local time is when they disembark.  :Confused:

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maybe for this guy but not for pilots, they (should) use UTC time and all these problems disappear. Problem of time zones really is not part of aviation, it is for passengers to figure out what the local time is when they disembark.  :Confused:

Very true. The only real reason it matters for us is synchronizing the position of the sun for reslism and for shared cockpit.

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Very true. The only real reason it matters for us is synchronizing the position of the sun for reslism and for shared cockpit.

 

I guess it depends on the degree of accuracy required. When looking up this stuff, I started thinking about this video (and leap seconds) all over again. (as my eyes slowly began to glaze)   :lol:

 

https://en.wikipedia.org/wiki/Coordinated_Universal_Time

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Talking of time zones in FSX, some areas/countries are not in the correct time zone.... is there a way to change that?

Thanks.

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Whether for the sun or a shared cockpit, can't you just set the desired proper utc in fsx?

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FYI:  The only time scales that matter are GPS and TAI; neither of which is affected by leap seconds.  All other time scales flows from these and cause their associated confusion.  I work in aerospace and all our systems use GPS time for this reason.

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Whether for the sun or a shared cockpit, can't you just set the desired proper utc in fsx?

 

You certainly can. However there are those who strive for realism, using the correct time for the time of day would be important.  It becomes more or less automatic when they are have the computer time syn'd to a source like the Naval Observatory (or others).

 

In the end, simulator time is what we want from it!

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I still don't understand how setting the local time adds to realism. As long as the correct utc for the locality is being used, then the sun is in the correct place. How does local time affect realism in this sim?

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It is actually a good idea to stick to UTC, I guess, even if local time does not match.

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Especially since governments have been whimsically playing with daylight savings, the difference between utc and local time may not be correct in msfs. So if you set your sim by local time, you might be wondering why it's dark outside while the sun is still up in the sim.

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However there are those who strive for realism..... using the correct time for the time of day would be important.  

And what exactly is this 'correct time'?? G1000 in my Cirrus SR22T (in real life) gives me UTC time by default however I can manually set a time zone offset (in system page) so it will display time in whatever time zone I wish. Is it realistic enough?  :wub: It comes from $80,000 worth of avionics.

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And what exactly is this 'correct time'?? G1000 in my Cirrus SR22T (in real life) gives me UTC time by default however I can manually set a time zone offset (in system page) so it will display time in whatever time zone I wish. Is it realistic enough?  :wub: It comes from $80,000 worth of avionics.

 

Our PCs all do this time zone setting as well.  In fact, that is all there really is to it: A timezone is selected (somehow) which does nothing except to provide a hours offset to the current UTC time.

 

All I know it's 5:00 somewhere and I'm ready for a margarita! :smile:

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I still don't understand how setting the local time adds to realism.

 

Okay, let's go over it again in slightly more detail than my last post (sorry about that) and see if the light comes on. :wink:

 

1. System time (which is local) is set accurately.  That will be local time for one's time zone. Of course this is assuming one also enters their time zone.

 

2. Flight simulator will then correlate the time to UTC, based on system time.

 

That is all I was saying. 

 

As far as realism goes, I was referencing when the sun comes up and goes down, and where it is in the sky being at the correct time - UTC time.

 

 

Best wishes to all.

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Okay, let's go over it again in slightly more detail than my last post (sorry about that) and see if the light comes on. :wink:

 

1. System time (which is local) is set accurately. That will be local time for one's time zone. Of course this is assuming one also enters their time zone.

 

2. Flight simulator will then correlate the time to UTC, based on system time.

 

That is all I was saying.

 

As far as realism goes, I was referencing when the sun comes up and goes down, and where it is in the sky being at the correct time - UTC time.

 

 

Best wishes to all.

Starting with local system time is a flaw in your process. That is because Msfs does not necessarily correlate your local time into the correct utc. Forget about local time if you want to avoid the possibility of realizing as you play the game that the sun position is off from what it should be. Always figure out what utc time you are in or want to be in, then check that it is the utc time set in msfs. Local time serves no purpose in this game nor in real aviation. Utc is the only time that matters.

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Timezone data is stored in a file called timezone.bgl in the scenery\base\scenery folder. The default one is kind of basic and often not accurate. One option is with ultimate traffic2. Which has a utility to update timezone.bgl ile to a specific date given. Note it's geared to the timetable currently installed, so if you have an old one it will only work for those dates. Usually not a problem unless you are setting a date close to one of the time changes.

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and I asked the same question on the LM site: Why can't the time and season go off of UTC instead of figuring backwards based on local time( HINT nobody calculates time this way)in some convoluted fashion that isn't at all accurate. Any damn computer that is connected to the internet has access to this and has for many many years.

 

Sorry but it annoys the heck out of me because every time I fire up the sim it's wrong and you have to jump  through hoops to make it load properly for the selected area. Not only that the seasons are completely wrong too. Summer in the US is winter in New Zealand etc....This has an effect on the proper texture sets being shown. So yes it is a completely broken system as far as I'm concerned, 

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