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English: Title: Dusk view of San Francisco, California Physical description: 1 transparency : color ; 4 x 5 in. or smaller. Notes: Title, date, and keywords provided by the photographer.; Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images.;
The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the Sun's disc goes 6° below the horizon in the ...
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A major meteor shower will shoot across the California sky this weekend and you can catch a glimpse — under prime conditions. The Eta Aquarids Meteor Shower has been active since April 15 and ...
Twilight occurs according to the solar elevation angle θ s, which is the position of the geometric center of the Sun relative to the horizon. There are three established and widely accepted subcategories of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon).
The Sunset District contains several large park and recreation areas. The San Francisco Zoo is located in the southwestern corner of the neighborhood by Lake Merced, the largest lake within San Francisco. Also within the Lake Merced area are several golf courses: the private Olympic Club and San Francisco Golf Club, and the public TPC Harding Park.