昭和55年 (Showa 55) is 1980 in the Western calendar. Check the age and zodiac below.
Yes. Showa 55 (昭和55年 in Japanese) corresponds to 1980 in the Western calendar.
1980 is the Year of the Monkey (申（さる） in Japanese) in the 12-year zodiac cycle. In the older 60-year sexagenary cycle (kanshi) it is 庚申.
It depends on whether they have had their birthday yet this year. The box near the top of this page calculates both possible ages automatically from today's date — the lower number is their age before their birthday, the higher number is their age after.
Showa 55 is written 昭和55年 in Japanese. It is also commonly abbreviated S55 — for example on driver's licenses and other government forms.
