Today I Found Out

Why Do We Have a Seven Day Week? (2016x225)

Air date: Oct 31, 2016

→Subscribe for new videos every day! https→—on the first day, the first visible crescent appeared; on approximately the seventh, the waxing half-moon could be seen; on approximately the fourteenth, the full moon; on approximately the twenty-first, the waning half-moon; and on approximately the twenty-eighth, the last visible crescent. As you can see, each notable cycle is made up of about seven days, hence, the seven-day week. Want the text version?: http://www.todayifoundout.com/index.php/2013/04/the-origin-of-the-7-day-week-and-the-names-of-the-days-of-the-week/ Sources: http://www.crowl.org/lawrence/time/days.html http://www.speakfrench.co.uk/vocab/days_of_the_week http://library.thinkquest.org/4626/days.htm http://www.timeanddate.com/calendar/days/ http://www.studyspanish.com/lessons/days.htm http://www.pantheon.org/articles/f/freya.html http://en.wikipedia.org/wiki/Seven-day_week http://www.etymonline.com/index.php?term=sabbath http://en.wikipedia.org/wiki/Seven-day_week http://www.hermetic.ch/cal_stud/hlwc/why_seven.htm http://en.wikipedia.org/wiki/Julian_calendar http://en.wikipedia.org/wiki/Nundinal_cycle#Nundinal_cycle http://en.wikipedia.org/wiki/Names_of_the_days_of_the_week