昭和58年 (Showa 58) is 1983 in the Western calendar. Check the age and zodiac below.
Yes. Showa 58 (昭和58年 in Japanese) corresponds to 1983 in the Western calendar.
1983 is the Year of the Boar (亥（い） in Japanese) in the 12-year zodiac cycle. In the older 60-year sexagenary cycle (kanshi) it is 癸亥.
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 58 is written 昭和58年 in Japanese. It is also commonly abbreviated S58 — for example on driver's licenses and other government forms.
