Visual time effect

i have a .fla which is source is not made by me but i dont remember the author now. it is a flash that has a weather movieclip in it. the day look changes due to the real time.but if you want to see the effect you must close/open the flash.
for example you set your computer time to 06:00 and open the flash you see the daylight with sun but if you change the time to 23:00 when the flash still opened it doesnt do anything. you must close and open the flash to see the new time effect.i want it to change the day look on the can i do that?
here is the fla;