{"id":25974,"date":"2012-02-02T11:07:46","date_gmt":"2012-02-02T18:07:46","guid":{"rendered":"http:\/\/hill-kleerup.org\/blog\/2012\/02\/02\/a-year-and-a-day-arent-quite-that-simple.html"},"modified":"2012-02-02T17:19:31","modified_gmt":"2012-02-03T00:19:31","slug":"a-year-and-a-day-arent-quite-that-simple","status":"publish","type":"post","link":"https:\/\/hill-kleerup.org\/blog\/2012\/02\/02\/a-year-and-a-day-arent-quite-that-simple.html","title":{"rendered":"A Year and a Day — aren't quite that simple"},"content":{"rendered":"

See, I love stuff like this — figuring out how long a "day" is, and then trying to make that fit into a "year" (which also needs to be defined, and which, in this not-very-intelligently-designed universe is never an exact amount). #ddtb<\/p>\n

Reshared post from +Philip Plait<\/a><\/strong><\/p>\n

#BAFact:<\/b> A complete cycle of day and night is called a nychthemeron<\/i>. How about that?<\/p>\n

More info: the word "day" usually means "daytime" in casual conversation, but you can tell by context when someone instead means a 24 hour period. The thing is, there are different kinds of days! Solar day, sidereal day, and more. Same thing for year: it depends on what you're using to measure them. In the link below I have some details on all that. It's funny how a seemingly simple notion turns out to be fairly complex when you look at it in detail.<\/p><\/blockquote>\n

\n

Embedded Link<\/strong><\/p>\n

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n

\t\t\t\t\t\t\t\t\t\t\t\tAnother orbit? Why, you don\u2019t look a rotation older than 4.56 billion years! | Bad Astronomy | Discover Magazine<\/a>
\n\t\t\t\t\t\t\t\t\t\t\t\tAstronomy | new year | In what is becoming an annual January tradition celebrating my laziness, I'm reposting this article about why astronomers are no fun at New Year's parties. Well\n\t\t\t\t\t\t\t\t\t\t\t<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

See, I love stuff like this — figuring out how long a "day" is, and then trying to make that fit into a "year" (which also needs to be defined, and which, in this not-very-intelligently-designed universe is never an exact amount). #ddtb Reshared post from +Philip Plait #BAFact: A complete cycle of day and night … Continue reading “A Year and a Day — aren't quite that simple”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[106,82],"tags":[107],"class_list":["post-25974","post","type-post","status-publish","format-standard","hentry","category-plusposts","category-space","tag-ddtb"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1147,"url":"https:\/\/hill-kleerup.org\/blog\/2001\/10\/10\/too_good_to_be.html","url_meta":{"origin":25974,"position":0},"title":"Too good to be true?","author":"***Dave","date":"Wed 10-Oct-01 3:43pm","format":false,"excerpt":"Too good to be true? 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