On Monday 16 October 2006 22:39, Donn Washburn wrote: > > I just checked it against my memory and I found it to be 1 hour off. > It was 2PM local and if I hit the "Clock Time" button shows fgfs = > "local 13:28") it is currently 15:29 , hit Noon and it shows 12:59 > Afternoon shows 15:42 (would be wrong)and Dusk shows 18:32 (would be > correct) finally hit Evening and it shows 19:26 (real time ##:34) > Turns out Afternoon and Evening display the wrong minutes. Sorry about > the possible errors in my quoting time. A fast run down shows that all > of the times do not hold the minutes correctly. The light/dark does > work correctly. Current System time is 15:38 fgfs show Afternoon as 15:42. >
Hi Donn, Just a few questions / thoughts: Which operating system are you running? The reason I'm asking is that I am aware of the fact that there might be a problem with the way the windows version of flightgear handles daylight saving time. I always found that windows time was one hour off when using the --time-match=[real|local|system] commandline options. This may explain the one hour difference between real and simulated time you're observing. On my linux system this has always worked correctly. Secondly, going through the time code recently, I noticed that the sunset / sunrise / noon times are calculated by calculating the exact solar time at the current user position. Although physically correct, we humans have decided that this type of time is quite useless in real life, and devided the planet into a more managable 24 time-zone system. Although this suits us, the consequence is that the difference between true solar time and local timezone time can be fairly high. I don't think that FlightGear currently takes the difference between solar time and human time zone information into account when it comes to noon/dawn/dusk calculations, but I could be wrong here. Hope this helps, Durk ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-users
