shaah
Method to return a shaah zmanis (temporal hour) calculated using a dip of 26. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk.
Dawn for this calculation is when the sun is 26˚ below the eastern geometric horizon before sunrise. Dusk for this is when the sun is 26˚ below the western geometric horizon after sunset. This day is split into 12 equal parts with each part being a shaah zmanis.
Since zmanim that use this method are extremely late or early and at a point when the sky is a long time past the 18 point where the darkest point is reached, zmanim that use this should only be used lechumra, such as delaying the start of nighttime mitzvos.
Return
the long millisecond length of a shaah zmanis. If the calculation can't be computed such as northern and southern locations even south of the Arctic Circle and north of the Antarctic Circle where the sun may not reach low enough below the horizon for this calculation, a Long.MIN_VALUE will be returned. See detailed explanation on top of the AstronomicalCalendar documentation.