四日
4th of the month, four days
Pattern visualization
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Examples
- 四日に出張します。I travel for business on the 4th.
- 四日間京都に滞在した。I stayed in Kyoto for four days.
Collocations
Mnemonic
Yokka (四日) reads the 4th of a month, or a four-day span, or just four days — 四 plus 日. It sits in the Yamato days 1-10 ladder learned via mikka earlier: tsuitachi (1), futsuka (2), mikka (3), yokka (4), itsuka (5), muika (6), nanoka (7), youka (8), kokonoka (9), touka (10). The "yo-kka" form (with sokuon small tsu) instead of "shi-ka" follows the same 四 reading-matrix logic seen in yon and yo-ji (covered earlier). Yokkaichi (四日市) is the city name in Mie Prefecture meaning "fourth-day market," from the Edo-period custom of holding markets on the 4th, 14th, and 24th of each month. Yokkaichi-zensoku (四日市ぜんそく, Yokkaichi asthma) is one of Japans Four Great Pollution Diseases of the 1960s, a respiratory illness from the citys petrochemical-complex air pollution — landmark vocabulary of Japans environmental history. Korean uses sino-Korean 4-il; Chinese splits between si-ri and "4 hao." JLPT N5 keys on memorizing yokka as the fixed reading.
Quick check
Cause of Yokkaichi asthma among Japans Four Great Pollution Diseases?