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The conversion table of the old calendar of one month is displayed from the specified year and month.
When years to be examined are selected and "calculate the old calendar" button is clicked, the conversion table of the solar calendar and the old calendar is displayed.
It is possible to examine it by the Rokuyo(六曜, six basic labels) of the old calendar.
| Solar calendar | Day of week | -> | Old calendar | Six basic labels | Intercalary month |
|---|---|---|---|---|---|
| 8/1/2025 | Fri. | 6/8/2025 | 先勝 (Senshou) | * | |
| 8/2/2025 | Sat. | 6/9/2025 | 友引 (Tomobiki) | * | |
| 8/3/2025 | Sun. | 6/10/2025 | 先負 (Senbu) | * | |
| 8/4/2025 | Mon. | 6/11/2025 | 仏滅 (Butsumetsu) | * | |
| 8/5/2025 | Tues. | 6/12/2025 | 大安 (Taian) | * | |
| 8/6/2025 | Wed. | 6/13/2025 | 赤口 (Shakkou) | * | |
| 8/7/2025 | Thurs. | 6/14/2025 | 先勝 (Senshou) | * | |
| 8/8/2025 | Fri. | 6/15/2025 | 友引 (Tomobiki) | * | |
| 8/9/2025 | Sat. | 6/16/2025 | 先負 (Senbu) | * | |
| 8/10/2025 | Sun. | 6/17/2025 | 仏滅 (Butsumetsu) | * | |
| 8/11/2025 | Mon. | 6/18/2025 | 大安 (Taian) | * | |
| 8/12/2025 | Tues. | 6/19/2025 | 赤口 (Shakkou) | * | |
| 8/13/2025 | Wed. | 6/20/2025 | 先勝 (Senshou) | * | |
| 8/14/2025 | Thurs. | 6/21/2025 | 友引 (Tomobiki) | * | |
| 8/15/2025 | Fri. | 6/22/2025 | 先負 (Senbu) | * | |
| 8/16/2025 | Sat. | 6/23/2025 | 仏滅 (Butsumetsu) | * | |
| 8/17/2025 | Sun. | 6/24/2025 | 大安 (Taian) | * | |
| 8/18/2025 | Mon. | 6/25/2025 | 赤口 (Shakkou) | * | |
| 8/19/2025 | Tues. | 6/26/2025 | 先勝 (Senshou) | * | |
| 8/20/2025 | Wed. | 6/27/2025 | 友引 (Tomobiki) | * | |
| 8/21/2025 | Thurs. | 6/28/2025 | 先負 (Senbu) | * | |
| 8/22/2025 | Fri. | 6/29/2025 | 仏滅 (Butsumetsu) | * | |
| 8/23/2025 | Sat. | 7/1/2025 | 先勝 (Senshou) | ||
| 8/24/2025 | Sun. | 7/2/2025 | 友引 (Tomobiki) | ||
| 8/25/2025 | Mon. | 7/3/2025 | 先負 (Senbu) | ||
| 8/26/2025 | Tues. | 7/4/2025 | 仏滅 (Butsumetsu) | ||
| 8/27/2025 | Wed. | 7/5/2025 | 大安 (Taian) | ||
| 8/28/2025 | Thurs. | 7/6/2025 | 赤口 (Shakkou) | ||
| 8/29/2025 | Fri. | 7/7/2025 | 先勝 (Senshou) | ||
| 8/30/2025 | Sat. | 7/8/2025 | 友引 (Tomobiki) | ||
| 8/31/2025 | Sun. | 7/9/2025 | 先負 (Senbu) |
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