Other factors have a small effect on the times too. The old Adelaide Observatory location is used for convention, Latitude: South 34˚ 56' Longitude: East 138˚ 36' and the time zone (Adelaide is 9.5 hours in advance of Greenwich Mean Time). Times are dependent on the latitude and longitude of observing the phenomena and also the time zone applicable to that area.
The calculated times are within one minute of each other. This almanac of sun and moon times is prepared jointly by the United States Naval Observatory and Her Majesty's Nautical Almanac Office. The sunrise and sunset times are calculated by interpolation from tables in the Astronomical Phenomena publication for each year. They are provided as a prima facie proof of sunrise and sunset and acceptance by a court for other purposes is not guaranteed. The times are intended for general public use, not for litigation purposes. The computations assume certain ideal conditions and the data might not be relevant to a specific case. The published times are computed and are not observed or recorded events. Sunrise and sunset times were originally provided as a means of establishing when vehicle lights should be turned on. Sunrise and sunset times for past years can be found in the South Australian Government Gazette. 2022 sunrise and sunset times for Adelaide (20.2 KB PDF)Ģ021 sunrise and sunset times for Adelaide (20.2 KB PDF)
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