Astronomical dusk – the geometric center of the Sun's disk is 18 degrees below the horizon.Nautical dusk – the geometric center of the Sun's disk is 12 degrees below the horizon.Civil dusk – the geometric center of the Sun's disk is 6 degrees below the horizon.There are 3 stages of dusk, each marking the end of 1 of the 3 phases of evening twilight: ©/SeanPavonePhoto Scientific DefinitionĪs with dawn, scientists define dusk as specific moments in time based on the solar elevation angle, which is the position of the Sun in relation to the horizon. ![]() Business Date to Date (exclude holidays).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |