{"id":89994,"date":"2025-06-01T10:18:45","date_gmt":"2025-06-01T10:18:45","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89994"},"modified":"2025-06-01T10:18:45","modified_gmt":"2025-06-01T10:18:45","slug":"perth-located-on-118-east-longitude-will-be-celebrating-new-year-even","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/","title":{"rendered":"Perth located on 118\u00b0 East Longitude will be celebrating New Year even"},"content":{"rendered":"

Perth located on 118\u00b0 East Longitude will be celebrating New Year event on 1st<\/sup> of January 2017 at 6:00 AM. At that time, what would be the time at Los Angeles located on 110\u00b0 West Longitude ?<\/p>\n

[amp_mcq option1=”9:12 PM of 1st<\/sup> January 2017″ option2=”2:48 PM of 31st<\/sup> December 2016″ option3=”11:40 PM of 31st<\/sup> December 2016″ option4=”5:28 AM of 1st<\/sup> January 2017″ correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is B) 2:48 PM of 31st December 2016.
\n<\/section>\n
\n– Longitude of Perth = 118\u00b0 East.
\n– Longitude of Los Angeles = 110\u00b0 West.
\n– The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0.
\n– The Earth rotates 360\u00b0 in 24 hours.
\n– The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes.
\n– The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes.
\n– Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12).
\n– Perth is located in the East, so its time is ahead of Los Angeles, which is in the West.
\n– Time at Los Angeles = Time at Perth – Time difference.
\n– Time at Perth = 6:00 AM on 1st January 2017.
\n– Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017.
\n– Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st.
\n– We need to subtract another 15h 12m – 6h = 9h 12m.
\n– Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016.
\n– Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.
\n<\/section>\n
\nThe International Date Line is located roughly around 180\u00b0 longitude. Moving west across the International Date Line means going back one day. The total longitudinal difference of 228\u00b0 is less than 180\u00b0 in either direction from the prime meridian, but crossing the 0\u00b0 longitude is involved. Perth (118\u00b0E) and Los Angeles (110\u00b0W) are on opposite sides of the prime meridian, and their difference is calculated by summing their longitudes. Since Perth is East of Los Angeles, its time is ahead, and the date can be different. In this case, going back 15 hours 12 minutes from Jan 1st in Perth takes us back into Dec 31st in Los Angeles.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Perth located on 118\u00b0 East Longitude will be celebrating New Year event on 1st of January 2017 at 6:00 AM. At that time, what would be the time at Los Angeles located on 110\u00b0 West Longitude ? [amp_mcq option1=”9:12 PM of 1st January 2017″ option2=”2:48 PM of 31st December 2016″ option3=”11:40 PM of 31st December … <\/p>\n

Detailed SolutionPerth located on 118\u00b0 East Longitude will be celebrating New Year even<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1098,1359,1106],"class_list":["post-89994","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1098","tag-longitude","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nPerth located on 118\u00b0 East Longitude will be celebrating New Year even<\/title>\n<meta name=\"description\" content=\"The correct answer is B) 2:48 PM of 31st December 2016. - Longitude of Perth = 118\u00b0 East. - Longitude of Los Angeles = 110\u00b0 West. - The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0. - The Earth rotates 360\u00b0 in 24 hours. - The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes. - The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes. - Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12). - Perth is located in the East, so its time is ahead of Los Angeles, which is in the West. - Time at Los Angeles = Time at Perth - Time difference. - Time at Perth = 6:00 AM on 1st January 2017. - Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017. - Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st. - We need to subtract another 15h 12m - 6h = 9h 12m. - Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016. - Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Perth located on 118\u00b0 East Longitude will be celebrating New Year even\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B) 2:48 PM of 31st December 2016. - Longitude of Perth = 118\u00b0 East. - Longitude of Los Angeles = 110\u00b0 West. - The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0. - The Earth rotates 360\u00b0 in 24 hours. - The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes. - The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes. - Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12). - Perth is located in the East, so its time is ahead of Los Angeles, which is in the West. - Time at Los Angeles = Time at Perth - Time difference. - Time at Perth = 6:00 AM on 1st January 2017. - Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017. - Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st. - We need to subtract another 15h 12m - 6h = 9h 12m. - Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016. - Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:18:45+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Perth located on 118\u00b0 East Longitude will be celebrating New Year even","description":"The correct answer is B) 2:48 PM of 31st December 2016. - Longitude of Perth = 118\u00b0 East. - Longitude of Los Angeles = 110\u00b0 West. - The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0. - The Earth rotates 360\u00b0 in 24 hours. - The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes. - The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes. - Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12). - Perth is located in the East, so its time is ahead of Los Angeles, which is in the West. - Time at Los Angeles = Time at Perth - Time difference. - Time at Perth = 6:00 AM on 1st January 2017. - Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017. - Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st. - We need to subtract another 15h 12m - 6h = 9h 12m. - Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016. - Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/","og_locale":"en_US","og_type":"article","og_title":"Perth located on 118\u00b0 East Longitude will be celebrating New Year even","og_description":"The correct answer is B) 2:48 PM of 31st December 2016. - Longitude of Perth = 118\u00b0 East. - Longitude of Los Angeles = 110\u00b0 West. - The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0. - The Earth rotates 360\u00b0 in 24 hours. - The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes. - The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes. - Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12). - Perth is located in the East, so its time is ahead of Los Angeles, which is in the West. - Time at Los Angeles = Time at Perth - Time difference. - Time at Perth = 6:00 AM on 1st January 2017. - Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017. - Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st. - We need to subtract another 15h 12m - 6h = 9h 12m. - Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016. - Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:18:45+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/","url":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/","name":"Perth located on 118\u00b0 East Longitude will be celebrating New Year even","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:18:45+00:00","dateModified":"2025-06-01T10:18:45+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is B) 2:48 PM of 31st December 2016. - Longitude of Perth = 118\u00b0 East. - Longitude of Los Angeles = 110\u00b0 West. - The total difference in longitude = 118\u00b0 (East) + 110\u00b0 (West) = 228\u00b0. - The Earth rotates 360\u00b0 in 24 hours. - The time difference for 1\u00b0 longitude = 24 hours \/ 360\u00b0 = 1\/15 hours = 4 minutes. - The total time difference between Perth and Los Angeles = 228\u00b0 * 4 minutes\/\u00b0 = 912 minutes. - Convert minutes to hours: 912 minutes \/ 60 minutes\/hour = 15 hours and 12 minutes (912 = 15 * 60 + 12). - Perth is located in the East, so its time is ahead of Los Angeles, which is in the West. - Time at Los Angeles = Time at Perth - Time difference. - Time at Perth = 6:00 AM on 1st January 2017. - Subtract 15 hours 12 minutes from 6:00 AM, 1st January 2017. - Subtracting 6 hours from 6:00 AM Jan 1st gives 0:00 AM (midnight) on Jan 1st. - We need to subtract another 15h 12m - 6h = 9h 12m. - Subtracting 9 hours from 0:00 AM Jan 1st gives 15:00 (3:00 PM) on 31st December 2016. - Subtracting the final 12 minutes from 3:00 PM Dec 31st gives 14:48 PM (2:48 PM) on 31st December 2016.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/perth-located-on-118-east-longitude-will-be-celebrating-new-year-even\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CAPF","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-capf\/"},{"@type":"ListItem","position":3,"name":"Perth located on 118\u00b0 East Longitude will be celebrating New Year even"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/89994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=89994"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/89994\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=89994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=89994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=89994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}