With the Periodic Calendar you get…

  • a perpetual calendar capable of exploring dates going back to 1582 and going forward into the future as far as you want to go.
  • a new way to look at time as the shift from day of the month to day of the week changes our…

 

The Periodic Calendar
16″ x 38″ print of the last calendar you’ll ever need.

$24.99



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