AD 2091 in Japan is ...

Reiwa 73

AD 2091 is also...

Taisei 180

Showa 166

Heisei 103

Reiwa 73

"Reiwa is the current era of Japan's official calendar. It began on 1 May 2019, the day on which Emperor Akihito's elder son, Naruhito, ascended the throne as the 126th Emperor of Japan. The day before, Emperor Akihito abdicated the Chrysanthemum Throne, marking the end of the Heisei era." -Wikipedia

Age Lookup

Year	Local year	Age	Ganzhi	Zodiac
2088	Reiwa 70	-64	bo (tsuchinoe) saru	Monkey
2089	Reiwa 71	-65	ki (tsuchinoto) tori	Rooster
2090	Reiwa 72	-66	ko (kanoe) inu	Dog
2091	Reiwa 73	-67	shin (kanoto) i	Pig
2092	Reiwa 74	-68	jin (mizunoe) ne	Rat
2093	Reiwa 75	-69	ki (mizunoto) ushi	Ox
2094	Reiwa 76	-70	ko (kinoe) tora	Tiger