Ceremony on November 25 on the occasion of employment of the solar calendar and institution of the Imperial era with accession of Emperor Jinmu to the throne as the starting point (Dajokan Fukoku No. 342, 1872).
太陽暦御頒行神武天皇御即位ヲ以テ紀元ト定メラルニ付十一月二十五日御祭典（明治5年太政官布告第342号）