[MOC] The Seven Hundred Year Reckoner - now with instructions!

[aeh5040]

Hi all,

This model was originally designed for the TC28 contest two years ago.  (It now has a new name).  I'm pleased to announce that I have at last fininshed streamlining and improving the construction to make it suitable for others to build. It should now be very robust and reliable.  I have produced full instructions, including a user-friendly system to apply and adjust the labels (which are in a printable PDF file), available at Rebrickable here:

https://rebrickable.com/mocs/MOC-247663/aeh5040/seven-hundred-year-reckoner/

The purpose of the device is to immediately find the day of the week for any date from 1 January 1601 to 31 December 2300 (Gregorian calendar).  It does this entirely mechanically, and leap years are handled automatically.  There are three differentials which mechanically combine the century, year, month and date inputs, and an automatic month selector for leap years.

The original development thread is below. 

 

[2GodBDGlory]

Very cool build! The action sounds very satisfying, and it's great to see the high splat gear usage!

[MKJoshA]

This blows my mind. The Lego is amazing. But what really impresses me is your calculation of all the dates that share a day of the week.