regnal year

Noun

 * 1)  A year in the reign of a monarch, beginning on the day of accession, the set of which are numbered ordinally. Formerly laws in the United Kingdom were identified in part by the regnal year of the monarch, and this practice is still followed in some Commonwealth countries.

Translations

 * Chinese:
 * Mandarin: 帝曆
 * Finnish: hallitusvuosi
 * Spanish: