[zitoune]

Hi,

in Singapore ....... I need to center it around 12pm, right? !

In Singapore, I believe it should be centred around 1pm. Singapore time is about one hour ahead of sun time, GMT + 8 hours (I believe because they use the same time zone as Malaysia, but Malaysia coordinates its time with the Eastern island).

The "maximum solar radiation" line should be correct in Cumulus provided you enter the correct site Longitude (it was about 104 degrees E, when I was there ) and of course the local time is set correctly.

I can't see your solar.tiff, but certainly a gain of 26 seems far too high.

Cheers, Alan.

Hi Alan,
you are totally right - I just checked and 13:08pm seems the exact time nowadays. When I move the cursor on the curve, I find the maximum at about 13:10pm.
I have re-attahed the picture in jpg - you see it ?

Thanks.