How many calendars are there?

From the creator

Humble Pi on Maths Gear: https://mathsgear.co.uk/products/humble-pi Get your free gift when you pre-order! https://www.penguin.co.uk/articles/2018/nov/humble-pi-preorder.html Here it is on Amazon. https://www.amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/0241360234/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 And Waterstones why not! https://www.waterstones.com/book/humble-pi/matt-parker/9780241360231 Right, now on to details about the actual video. All the photos of retro calculators are from this great website: My Calc DB http://mycalcdb.free.fr/main.php?l=0&p=1 I do not have permission to use the images for anything other than my own personal use. So no, I cannot sell you a copy of "Calculators of 1974". I'm sorry. Because it's amazing. 823 years on Snopes. https://www.snopes.com/fact-check/money-bags/ CORRECTIONS - At 7:38 I say “400 days” when I mean “400 years”. First spotted by Jim Fortune. - User "SmackleFunky" spotted a typo in the above correction. Does that count as a video correction? I'm not sure. - I said 13 days when talking about England's calendar reform of 1752 when they actually skipped 11 days. Sorry! Wednesday 2 September was followed by Thursday 14 September. Spotted by macronencer. - Yes, I had “refor” above instead of “reform”. Another meta-correction! - Let me know if you spot anything else. Preferably in the video and not the corrections. Thanks to my Patreon supports who do support these videos and make them possible. Here is a random su

Published 2018-12-10 · Watch on YouTube ↗
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