8. Calendar

1. daily technique

November 2020 starts

2020年11月は「+6の月」。日数に6を足した数の7の余りが曜日に対応。 2020 Nov is "+6 month". Reminder divided by 7 of day plus 6 represents the day of...
1. daily technique

October 2020 starts

2020年10月は「+3の月」。日数に3を足した数の7の余りが曜日に対応します。 2020 October is "+3 month". Reminder divided by 7 of day plus 3 represents the...
2. Calendar knowledge

Ghanaian name system

Ghanaian name system One of the reason why SpeedCalendar commissioner is interested in Calendar system is Ghanaian name...
1. daily technique

September 2020 starts

2020 September is "+1 month". Reminder divided by 7 of day num plus 1 represents the day of the week. 2020年9月は「+1の月」。...
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