5.2 Video

5.1 Manual

English calendar calculation manual (simple, 28/56/84 method) is now available

Quick manual and an academic thesis are also available.
5.2 Video

How a SpeedCalendar competitor competes in SpeedCalendar.com

SpeedCalendar technique enables an middle age man to calculate the day of the week. Younger people may conduct the calen...
5.2 Video

中文版星期几计算视频出来了! (SpeedCalendar instructional video in Chinese is now available!)

看完这视频后、你可以口算出来星期几! bilibili 优酷 微博 爱奇艺 Youtube
2.1 Kurukuru Method

Technique for day calculation is out! (in Japanese)

SpeedCalendar technique has been disclosed!  Enjoy!  (English version and Chinese version are coming soon.)