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UTC confusion

Featured Replies

Hi Damian (and others),Although I read the very nicely written manual for wxRE, I'm left puzzled on one point. I normally fly the bush in Alaska using VFR. This usually requires daytime flights for me (not enough carrots I guess), so I DO NOT use system time for my downloads. But when entering the UTC time for my downloads, do I stick with my pacific time zone, which is -8 hours, or do I use the Alaska time zone, which is -9 hours. I know this shows my ignorance about how the weather downloads work, but such is life :-hmmm

  • Commercial Member

Hi David,When system time is disabled, it reverts to FS time, so it ignores any UTC conversion setting or system clock value. It simply uses the FS zulu time. This can cause problems with dynamic processing if you are flying anything except REAL-TIME for FS time and you are using ONLINE MODE. Using system time keeps the processing synched to your system clock and is better for real-time weather mode. In this case you would use YOUR time zone conversion of -8, regardless of where you fly to. Hope that helps!-Damian[table border=0" cellspacing="30" cellpadding="0][tr][td align = "left"]Damian ClarkHiFi Simulation SoftwareDeveloper of ActiveSkyThe next-generation weather environment simulation for FS2002!http://hifi.avsim.net/activesky[/td][td]http://hifi.avsim.net/activesky/images/wxrebeta.jpg][/td][/tr][/table://http://hifi.avsim.net/activesky/ima...][/tr][/table

Damian Clark
HiFi  Simulation Technologies

Hi Damian,Thank you for the quick response. Unfortunately I think I'm more confused now than before. What I'm taking away from the above message is that the only means by which to use the dynamic weather feature is to fly real time with the UTC conversion. If I change to FS time, then dynamic weather won't work properly?? I think I have to go back to your manual and sort this out for myself. But thanks for trying to help.

  • Commercial Member

David,The only thing that wxRE cares about is "Processed Time". The processed time is as you configure. When you don't have USE SYSTEM TIME checked then instead of actual ZULU time it uses FS ZULU time.If you are running online and with TAF processing (dynamic mode) enabled, then the processed time is important because it determines how long ago the METAR it is reading was issued. If this is old it instead finds a more valid TAF entry.To make sure that your ONLINE mode weather is REAL TIME and DYNAMICALLY PROCESSED correctly you must be using a PROCESSED time that is REAL TIME. So this should be SYSTEM TIME.Now if you are flying offline you can mess with the processed time (using FS TIME, or an altered system time UTC conversion) to MATCH the time for those offline file reports and experience the valid time-line of dynamic weather.Essentially, for want you want to accomplish, just use online mode, system time with UTC -8 and TAF processing enabled. Now your weather is processed correctly for the CURRENT REAL-TIME weather and dynamic weather will process accordingly when a METAR is old.I know this is all confusing but there are MANY combinations and possibilities and with that comes complexity. The easiest way to avoid this complexity if you don't want to deal with it is to disable TAF processing and always fly with the current METAR, weather it come from ONLINE or OFFLINE sources.Hope that helps a bit!-Damian[table border=0" cellspacing="30" cellpadding="0][tr][td align = "left"]Damian ClarkHiFi Simulation SoftwareDeveloper of ActiveSkyThe next-generation weather environment simulation for FS2002!http://hifi.avsim.net/activesky[/td][td]http://hifi.avsim.net/activesky/images/wxrebeta.jpg][/td][/tr][/table://http://hifi.avsim.net/activesky/ima...][/tr][/table

Damian Clark
HiFi  Simulation Technologies

As I read it SD Sim, just select "Use System" time and set the conversion to -8 (as you are on the West Coast, USA). This way it will always use real-time weather no matter what time you set in FS2002.Lance

Thanks Damian,I know I can be thick as a brick, but I get it now. I appreciate the clarification.

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