昭和56年 (Showa 56) is 1981 in the Western calendar. Check the age and zodiac below.
Yes. Showa 56 (昭和56年 in Japanese) corresponds to 1981 in the Western calendar.
1981 is the Year of the Rooster (酉（とり） in Japanese) in the 12-year zodiac cycle. In the older 60-year sexagenary cycle (kanshi) it is 辛酉.
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 56 is written 昭和56年 in Japanese. It is also commonly abbreviated S56 — for example on driver's licenses and other government forms.
