1The twentieth day of the month. Has the special kun reading 'hatsuka'.
今月の二十日は友達の結婚式です。
The 20th of this month is my friend's wedding.
二十日は給料日だから銀行が混む。
The 20th is payday, so the bank gets crowded.
八月二十日は僕の誕生日だ。
August 20th is my birthday.
申込みは二十日までに済ませてください。
Please complete your application by the 20th.
2A period of twenty days; for twenty days.
夏休みは二十日間の予定です。
Summer vacation is planned for twenty days.
その薬は服用してから約二十日で効果が出る。
The medicine takes effect about twenty days after starting it.
工事は約二十日で終わる見込みだ。
The construction is expected to finish in about twenty days.
あと二十日で年末だ。
Year-end is twenty days away.