1. daily technique

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...
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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