1. daily technique

高速演算法:Y2MとM2Y

スピードカレンダーにおいて1月と2月の処理は計算スピードに大きく影響を与えるファクターである。ここでは(1)下二桁値→月値の順で計算するY2M法と(2)月値→下二桁値の順で計算するM2Y法の二つを紹介する。 Y2M法 この手法は下二桁値を導...
6. Competition

11th SpeedCalendar official competition result (2022/02/05)

Competition Date: 5 Feb 2022 (Sat) Time: 13:00-13:30 (UTC+0900) Venue: Zoom Regulations: See regulations Record 5 days s...
6. Competition

10th SpeedCalendar official competition result (2022/01/22)

World Record and Personal Best World Record 10.434s (Kosaka) for 5 days 14/14 (KurukuruCaptain) for 1 minute 15/15 (Kosa...
6. Competition

9th SpeedCalendar official competition result (2021/12/18)

Competition Date: 18 Dec 2021 (Sat) Time: 13:00-14:30 (UTC+0900) Venue: Zoom Regulations: See regulations Record 5 days ...
6. Competition

8th SpeedCalendar official competition result (2021/11/21)

Competition Date: 21 Nov 2021 (Sat) Time: 10:00-10:40 (UTC+0900) Venue: Zoom Regulations: See regulations Record 5 days ...
6. Competition

7th SpeedCalendar official competition result (2021/10/23)

Competition Date: 23 Oct 2021 (Sat) Time: 10:00-10:40 (UTC+0900) Venue: Zoom Regulations: See regulations Broadcast: twi...
6. Competition

5th SpeedCalendar official competition result (2021/08/21)

Competition Date: 21 Aug 2021 (Sat) Time: 10:00-10:40 (UTC+0900) Venue: Zoom Regulations: See regulations Broadcast: twi...
6. Competition

SpeedCalendar official competition

Official Competition 39th 2024/06/23 (Sun) 15:30-16:00 (Japan Standard Time, UTC +0900) 40th 2024/07/14 (Sun) 15:30-16:0...
5.1 Manual

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

Quick manual and an academic thesis are also available.
6. Competition

5th SpeedCalendar official competition (21 Aug 2021, 10:00-11:30 (UTC+0900))

Date: 21st August 2021 (Sat) Time: 10:00-11:30 (UTC+0900) Venue: Zoom (Login URL is shared in response to the applicatio...