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daytime; during the day; time from sunrise until sunset; diurnal period
昼間の太陽が眩しくて暑かった。
The daytime sun was dazzling and hot.
昼間に電話してもいいですか。
May I call you during the day?
昼間は暑いですが、夜は涼しい。
It's hot during the day but cool at night.