Support Vsauce, your brain, Alzheimer's research, and other YouTube educators by joining THE CURIOSITY BOX: a seasonal delivery of viral science toys made by Vsauce! A portion of all proceeds goes to Alzheimer's research and our Inquisitive Fellowship, a program that gives money and resources directly to other educational channels here on YouTube! https://www.curiositybox.com Jake’s video about The Curiosity Box: https://www.youtube.com/watch?v=p91-GhjgeEU Minute Physics on why December days are the longest: https://www.youtube.com/watch?v=nZMMuv0Ltyo StandUpMaths on calendars and leap days: https://www.youtube.com/watch?v=qkt_wmRKYNQ Tom Scott on the Equation of Time: https://www.youtube.com/watch?v=d9Qnobvx_kM My video on what would happen if the Earth stopped spinning: https://www.youtube.com/watch?v=K0-GxoJ_Pcg GREAT visuals showing how Earth moves around the sun: https://www.youtube.com/watch?v=82p-DYgGFjI http://www.timeanddate.com/ George Washington’s birthday: https://www.archives.gov/legislative/features/washington/ real-time sub solar point location: http://rl.se/sub-solar-point Lahaina noon images from the Oahu Astrophotography club: https://www.facebook.com/OahuAstrophotoClub analemma: https://en.wikipedia.org/wiki/Analemma great solargraph and analemma images: http://analemma.pl/english-version interactive seasons and ecliptic simulator: http://astro.unl.edu/classaction/animations/coordsmotion/eclipticsimulator.html Nasa video of seasonal movement of Earth: https://svs.gsfc.nasa.gov/20063 Tropical year: https://en.wikipedia.org/wiki/Tropical_year Earth rotation specifics: https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=20196 How Earth moves through the universe: https://astrosociety.org/edu/publications/tnl/71/howfast.html http://www.slate.com/blogs/bad_astronomy/2013/03/04/vortex_motion_viral_video_showing_sun_s_motion_through_galaxy_is_wrong.html http://space.gizmodo.com/racing-while-standing-still-1558642922/1559622011 https://www.reddit.com/r/askscience/comments/1rhu7r/i_always_see_representations_of_the_solar_system minute physics on cab: https://www.youtube.com/watch?v=_mZQ-5-KYHw PBS spacetime on the cosmic microwave background: https://www.youtube.com/watch?v=3tCMd1ytvWg https://www.youtube.com/watch?v=wcBjibuHxEk CMB rest frame: http://physics.stackexchange.com/questions/25928/is-the-cmb-rest-frame-special-where-does-it-come-from https://www.reddit.com/r/AskPhysics/comments/2va4t6/does_no_absolute_reference_frame_contradict_the/ Wikipedia: https://en.wikipedia.org/wiki/Day https://en.wikipedia.org/wiki/Solar_time https://en.wikipedia.org/wiki/Sidereal_time https://en.wikipedia.org/wiki/Calendar https://en.wikipedia.org/wiki/Gregorian_calendar https://en.wikipedia.org/wiki/Calendar_reform https://en.wikipedia.org/wiki/Day_length_fluctuations https://en.wikipedia.org/wiki/Cosmic_microwave_background wikicommons images: https://en.wikipedia.org/wiki/Sundial#/media/File:Kew_Gardens_0502.JPG https://en.wikipedia.org/wiki/File:CathedralofLearningLawinWinter.jpg https://en.wikipedia.org/wiki/Miami_Beach,_Florida#/media/File:South_Beach_20080315.jpg To explore space, I highly recommend these: http://www.shatters.net/celestia/ http://en.spaceengine.org/ music by http://www.youtube.com/jakechudnow and http://www.audionetwork.com Awesome 3D graphics by Eric Langlay: https://www.youtube.com/user/ericdraven30 Lame 2D stuff by me.