cal_sunsetTime {simET}

Calculating the local solar time for sunset/sunrise

Description

Calculating the local solar time for sunset/sunrise.

Usage

cal_sunsetTime(solar_declination, latitude)

Arguments

solar_declination

can be calculated by cal_solardeclination().

latitude

is latitude data(Radian).

Details

Knowing the time of sunrise can calculate the time of sunset. sunrise_time=24-sunset_time. Day_length=2*(sunset_time-12).

Value

A vector for the local solar time for sunset/sunrise

References

Teh CBS.Introduction to mathematical modeling of crop growth: How the equations are derived and assembled into a computer model. Brown Walker Press, 2006.