University of Heidelberg

Beginning and end of the civil twilight

(The centre of the sun is 6 degrees below the horizon)

Civil twilight for one day or an entire year
(Please select "day" or "year".)

day month year
(Please select the full date and/or enter the year. The year must be between 1950 and 2049.)

Location:    List of coordinates
(Please select a city in Germany. For other locations, the geographic coordinates must be entered; see, e. g., "list of coordinates". )

Time zone: hrs mins west or east of Greenwich
(Please note that the Central European Summer Time is 2 hours ahead of Greenwich Mean Time. Otherwise, the Central European Time applies which is 1 hour ahead of Greenwich.)

Please enter the geographic coordinates.

Geographic longitude: west or east degs mins

Geographic latitude: north or south degs mins

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