nth year of Heisei
Abbreviation of 平成, used as a prefix before a year number to indicate a year in the Heisei era (1989–2019).
See also: 平成
Heisei 30 corresponds to 2018.
I graduated in Heisei 30 (2018).
This document says 'Heisei 15'.
平 (ひら) is a noun meaning a flat object or a low rank, while 平 (たいら) is an adjectival noun meaning 'flat, level', sharing the same kanji but a different reading and use.
Standard kanji spelling for this prefix.
Abbreviation of 平成 (Heisei), the Japanese era name from 1989 to 2019.
plane; level surface; flat surface
tranquil; calm; peaceful; quiet
peace
normal; usual; ordinary; everyday
plain; moor; prairie
flat; level; even; smooth · calm; peaceful; uneventful; trouble-free
square
level ground; plain; flatland
non-leap year; common year · average year; normal year
peacetime; time of peace · ordinary times; normal times
balance; equilibrium
discontent; dissatisfaction; complaint; grievance
level ground; flat land · horizon · field of view; visible range
peace; tranquility
calm; composed; unruffled
jinbei; traditional summer wear
calm; tranquility; serenity · composure; equanimity; presence of mind
easy; simple; plain
flat and smooth; smooth; level
square meter
suppression; pacification; subjugation