April
[名詞]
the fourth month of the year, after March and before May

4月, 四月
Ex: Tax Day in the United States typically falls April 15th , the deadline for individuals to file their income tax returns for the previous year .
September
[名詞]
the ninth month of the year, after August and before October

9月, セプテンバー
Ex: September can be a busy month for businesses as they gear up for the holiday season , with retailers stocking shelves with fall merchandise and planning promotions to attract customers .

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