time_interval dtime_start dtime_end [unit] time_interval -180 180 minthe time interval reaches from time + dtime_start to time + dtime_end, in the example from 180 minutes before time to 180 minutes after time. The unit argument is optional, and can be one of the following: s (seconds), min (minutes), or h (hour). The default is s. This option makes only an effect in combination with time, latitude, longitude, and only has an effect for solar simulations (and of course if no sza defined).