For the town I live in the equation is 730-198sin 2Pit365Pi2For any given location the 730 is the average between the longest and shortest day in minutes. The determination of the time difference. Prior to this we used End date-Start date.
DATEDIFB2C2y Years DATEDIFB2C2ym Months DATEDIFB2C2md Days.
Returns the current day of the month 1 31 the current day of a month is 15 th day therefore it results or returns the output value 16. We can approximate the declination of the sun by. For something like the Earth and Venus is pretty similar this corresponds to about 14 hours. The beauty of this method is that it works perfectly in all cases no matter which date is older and which is newer.