April, Uzuki (卯月, "u-no-hana month")

Holiday, Sekku & Seasonal Memorial in April
8th April  [Hana Matsuri] 8th April is Buddha's Birthday, celebrated at all Buddhist temples in Japan by devotees placing flowers in the temples and sometimes pouring tea on Buddha's head.
29nd April  [Showa Day] April 29 is the birthday of former Emperor Showa, who died in the year 1989. Until 2006, Greenery Day (see May 4) used to be celebrated on this day.
April 29 to May 5th  [Golden Week] Golden Week is one of the biggest holidays of the year. Many people take a week off from work and go on family vacations or overseas trips.

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May, Satsuki (皐月, "Early-rice-planting Month")

Holiday, Sekku & Seasonal Memorial in May
3rd May  [Constitution Day] On this day in 1947, the new post war constitution was put into effect.
4th May  [Greenery Day] Until 2006, Greenery Day used to be celebrated on April 29, the birthday of former Emperor Showa. The day is dedicated to the environment and nature, because the emperor loved plants and nature. Before being declared Greenery Day, May 4 used to be a national holiday due to a law, which declares a day, that falls between two national holidays, a national holiday.
5th May  [Children's Day] Celebrated throughout the nation with families displaying samurai . . .  Check the schedule of this month …

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June, Minazuki (水無月, "Month of Water")

Holiday, Sekku & Seasonal Memorial in June
June  [Rainy Season (Tsuyu)] Early summer, most parts of Japan in a rainy season, so called tsuyu . . .  ›› read more

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