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A double sunset is a rare astro-geographical phenomenon, in which the sun sets twice on the same evening from a specific place. The phenomenon is traditionally associated with the town of Leek, in Staffordshire, from where it is viewed on and around the summer solstice in good weather.〔''The Staffordshire Sentinel'', 27 June 1874.〕〔''The Staffordshire Advertiser'', 22 June 1889, page 4.〕〔''The Staffordshire Advertiser'', 29 June 1895, page 5.〕〔''The Leek Post'', 23 June 1934.〕〔''The Mysterious Double Sunset'', back cover blurb and pages 1, 3 and 4, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕〔''Staffordshire Tales of Mystery & Murder'', pages 26 and 28-30, David Bell, Countryside Books, 2005.〕 The occurrence was first recorded in writing in 1686 by Dr Robert Plot in his book ''The Natural History Of Stafford-shire'',〔''The Natural History Of Stafford-shire'', pages 2-3, Robert Plot LL.D., Oxford The Theatre, 1686.〕 although it has been argued that the first people to witness the spectacle may well have been Danish settlers from the Great Army, which invaded England in the ninth century.〔''The Mysterious Double Sunset'', back cover blurb and pages 29-32, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 The traditional site for observing the phenomenon was the churchyard of Saint Edward the Confessor, from a particular point in which the whole of the sun set on the summit of The Cloud, a millstone grit hill six miles to the northwest. The sun partially reappeared from The Cloud's steep northern slope and soon afterwards set for a second and final time on the horizon.〔''The Staffordshire Advertiser'', 25 June 1870.〕〔''The Leek Times'', 18 July 1884.〕〔''Olde Leeke: Historical, Biographical, Anecdotal and Archaelogical'': ''A "Doctor's Corner" in the Old Churchyard'' article, Matthew Henry Miller, 1891.〕〔''The Leek Times'', 25 June 1927.〕〔''The Leek Post'', 30 June 1934.〕〔''Leek Post & Times'', 25 June 1953, page 9.〕〔''Evening Sentinel'', 22 June 1963, page 5.〕〔''Leek Post & Times'', 25 June 1970, page 4.〕〔''The Mysterious Double Sunset'', back cover blurb and pages 3-4, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 The spectacle was last reliably witnessed, and filmed, from the churchyard in 1977,〔''Evening Sentinel'', 22 June 1977, page 11.〕〔''The Mysterious Double Sunset'', back cover blurb, pages 53, 66-69 and 74 and photographs 10(i) and (ii), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 but is no longer visible from the location because of tree interference.〔''Leek Post & Times'', 19 June 1996, page 2.〕〔''The Mysterious Double Sunset'', back cover blurb and pages 53, 74 and 80-81, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 It is, however, still observable from Leek on and around the summer solstice from the road to Pickwood Hall, off Milltown Way,〔''The Mysterious Double Sunset'', page 125, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕〔''Leek Post & Times'', 19. 6. 2002, page 6.〕〔''The Sentinel'', 22. 6. 2002, page 10.〕〔''Your Leek Paper'', 25. 6. 2003, page 31.〕〔''Leek Post & Times'', 21. 6. 2006, page 4.〕〔''Your Leek Paper'', 25. 6. 2008, page 6.〕〔''Leek Post & Times'', 23. 6. 2010, page 10.〕〔''The Sentinel'', 20. 6. 2013, page 6.〕 and from Lowe Hill on the outskirts of the town.〔''The Mysterious Double Sunset'', pages 124-126 and photographs 12(i) and (ii), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕〔''Leek Post & Times'', 18. 6. 2014, page 15.〕〔''The Sentinel'', 19. 6. 2014, page 14.〕〔''Leek Post & Times'', 25. 6. 2014, page 15.〕 Better viewing points, though, are from the A 523, above Rudyard Reservoir,〔''The Mysterious Double Sunset'', page 154 and photographs 13(i) and (ii), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 and Woodhouse Green,〔''The Mysterious Double Sunset'', page 168 and photographs 14(i)-(iv), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 both of which are nearer to The Cloud and therefore enable a larger proportion of the sun to reappear. Further double sunsets were discovered by the writer Jeff Kent in 1997 from three places in west Derbyshire, observed against the limestone reef knolls, Chrome Hill, Parkhouse Hill and Thorpe Cloud.〔''The Mysterious Double Sunset'', pages 101, 102, 103-104, 106 and 111, Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 The Chrome Hill phenomenon is observed from Glutton Bridge for a short period around the summer solstice. The sun sets just to the southwest of the summit of the hill, begins to re-emerge almost immediately afterwards from its steep northeastern slope before fully reappearing and later sets for a second and final time at the foot of the hill.〔''The Mysterious Double Sunset'', pages 102, 110, 111, 113-114 and 200 and photographs 23(i)-(iv), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕〔''Buxton Advertiser'', 12. 6. 2002, page 4.〕〔''The Sentinel'', 20. 6. 2006, page 12.〕〔''Buxton Advertiser'', 9. 7. 2009, page 12.〕〔''Your Leek Paper'', 15. 6. 2011, page 4.〕〔''Buxton Advertiser'', 26. 6. 2014.〕 The Parkhouse Hill occurrence is visible from nearby Glutton Grange in late March, early April and September. The sun sets just to the south of the summit of the hill, begins to re-emerge almost immediately afterwards from its steep northern slope before fully reappearing and later sets for a second and final time at the foot of the hill.〔''The Mysterious Double Sunset'', pages 103-104, 106, 201 and 202 and photographs 18(i)-(iv), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 The Thorpe Cloud event is viewed from the top of nearby Lin Dale on and around the summer solstice and perhaps beyond. The sun sets on the summit of the hill, partially reappears from its steep northern slope and sets for a second and final time shortly afterwards.〔''The Mysterious Double Sunset'', pages 101 and 113 and photographs 22(i) and (ii), Jeff Kent, ISBN 0-9529152-5-1, Witan Books, 2001.〕 == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「double sunset」の詳細全文を読む スポンサード リンク
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