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出し...
1. daily technique 
6. Competition 11th SpeedCalendar official competition result (2022/02/05)
CompetitionDate: 5 Feb 2022 (Sat)Time: 13:00-13:30 (UTC+0900)Venue: ZoomRegulations: See regulationsRecord5 days single#...
6. Competition 10th SpeedCalendar official competition result (2022/01/22)
World Record and Personal BestWorld Record 10.434s (Kosaka) for 5 days 14/14 (KurukuruCaptain) for 1 minute 15/15 (Kosak...
6. Competition 9th SpeedCalendar official competition result (2021/12/18)
CompetitionDate: 18 Dec 2021 (Sat)Time: 13:00-14:30 (UTC+0900)Venue: ZoomRegulations: See regulationsRecord5 days single...
6. Competition 8th SpeedCalendar official competition result (2021/11/21)
CompetitionDate: 21 Nov 2021 (Sat)Time: 10:00-10:40 (UTC+0900)Venue: ZoomRegulations: See regulationsRecord5 days single...
6. Competition 7th SpeedCalendar official competition result (2021/10/23)
CompetitionDate: 23 Oct 2021 (Sat)Time: 10:00-10:40 (UTC+0900)Venue: ZoomRegulations: See regulationsBroadcast: twitCast...
6. Competition 5th SpeedCalendar official competition result (2021/08/21)
CompetitionDate: 21 Aug 2021 (Sat)Time: 10:00-10:40 (UTC+0900)Venue: ZoomRegulations: See regulationsBroadcast: twitCast...
6. Competition SpeedCalendar official competition
Official Competition52st2025/11/09 (Sun) 16:00-16:30 (Japan Standard Time, UTC +0900)Venue: Zoom (Login URL is shared in...
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 application)...