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HM Nautical Almanac Office: Transits of Venus

1396 November 23rd Transit of Venus


Global Visibility of the 1396 Transit of Venus

Venus crossed the disc of the Sun on 1396 November 23rd. The map above shows the visibility of the event. The entire transit could have been seen from the south-western part of Canada, the western half of the United States, Central America except the southern part, the westernmost part and the southern half of South America, the islands of the eastern Pacific Ocean and Antarctica. The Sun set while the transit was in progress in the grey area encompassing the western half of Africa, the south-western part of Europe including south-western part of the British Isles, the eastern half of North America, the Caribbean and the northern half of South America except the westernmost part. The Sun rose while the transit was in progress in the grey area taking in western Canada, Alaska, the Hawaiian Islands and the islands of the western Pacific Ocean, Australasia, and the easternmost parts of Asia. The yellow lines on the diagram show the position of the terminator, where the Sun is either rising or setting, at the key phases of the transit.

Geocentric Circumstances

Geocentric Circumstances of the 1396 Transit of Venus

The geocentric circumstances of the transit are shown in the diagram above. During the transit, the diameter of the Sun is 1950.0 arcseconds and that of Venus is 63.2 arcseconds. In other words, the diameter of Venus is 0.03 that of the Sun, making it look like a rapidly moving sunspot. The minimum separation between the centre of the solar disc and Venus was around 424.4 arcseconds. The whole transit lasts just under seven and a half hours.

All timings are given in Universal Time (UT).

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Last modified: Tuesday, 03 May 2011 at 13:57:35 BST