run4
intercalary; an extra day or month inserted into the lunar or solar calendar (such as February 29)

strokes 7
radical
strokes after radical 4
敖闰 敖閏 ao2 run4
Dragon King of the West Sea, Ao Run, also Ao Ji (敖吉)

闰年 閏年 run4 nian2
leap year; (lunar calendar) year with a thirteen intercalary month

闰月 閏月 run4 yue4
intercalary month in the lunar calendar; leap month