{"id":228041,"date":"2025-06-06T18:57:17","date_gmt":"2025-06-06T18:57:17","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=228041"},"modified":"2025-06-06T18:57:19","modified_gmt":"2025-06-06T18:57:19","slug":"if-1st-january-2001-was-monday-then-what-day-of-the-week-was-it-on-31st-december-2001","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/06\/if-1st-january-2001-was-monday-then-what-day-of-the-week-was-it-on-31st-december-2001\/","title":{"rendered":"If 1st January 2001 was Monday then what day of the week was it on 31st December 2001"},"content":{"rendered":"\n

If 1st January 2001 was Monday then what day of the week was it on 31st December 2001 ?<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

If 1st January 2001<\/strong> was a Monday<\/strong>, then 31st December 2001<\/strong> was a Monday<\/strong> as well.<\/p>\n\n\n\n

\n\n\n\n

Explanation <\/strong><\/h3>\n\n\n\n

To determine the day of the week on 31st December 2001<\/strong>, given that 1st January 2001 was a Monday<\/strong>, we need to count how many days have passed in the year and how that affects the weekday.<\/p>\n\n\n\n

The key concept here is that the day of the week advances by one<\/strong> for every non-leap year<\/strong> (because 365 \u00f7 7 = 52 weeks and 1 day). That one extra day causes the weekday to move forward by one day.<\/p>\n\n\n\n

However, in this case, we are looking at the same calendar year<\/strong> \u2014 from 1st January 2001 to 31st December 2001 \u2014 so we will look at the total number of days between these two dates.<\/p>\n\n\n\n

Step 1: Check if 2001 is a leap year<\/strong><\/p>\n\n\n\n

A year is a leap year if:<\/p>\n\n\n\n

    \n
  • It is divisible by 4, and<\/li>\n\n\n\n
  • Not divisible by 100, unless also divisible by 400.<\/li>\n<\/ul>\n\n\n\n

    2001 is not<\/strong> divisible by 4, so it is not a leap year<\/strong>. Therefore, it has 365 days<\/strong>.<\/p>\n\n\n\n

    Step 2: Count the number of days from 1st January to 31st December<\/strong><\/p>\n\n\n\n

    From 1st January to 31st December is 365 days<\/strong>. Since we are calculating inclusive of 1st January (which was Monday), the 365th day will be the same day of the week<\/strong> as the first day, because:<\/p>\n\n\n\n

      \n
    • 365 \u00f7 7 = 52 weeks + 1 day.<\/li>\n\n\n\n
    • That 1 extra day pushes the weekday forward by 1<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      So, 1st January 2001<\/strong> was a Monday<\/strong>. After 364 days (52 full weeks), we reach 30th December 2001<\/strong>, which would also be a Sunday<\/strong>. The next day, 31st December<\/strong>, is Monday<\/strong>.<\/p>\n\n\n\n

      Thus, 31st December 2001<\/strong> was also a Monday<\/strong>. \u2705<\/p>\n\n\n\n

      \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

      If 1st January 2001 was Monday then what day of the week was it on 31st December 2001 ? The Correct Answer and Explanation is: If 1st January 2001 was a Monday, then 31st December 2001 was a Monday as well. Explanation To determine the day of the week on 31st December 2001, given that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-228041","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/228041","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=228041"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/228041\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=228041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=228041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=228041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}