daytime; broad daylight
「日中」 has another reading with different meanings.
daytime; during the day
daytime; during the day; time from sunrise until sunset; diurnal period
日中は仕事で忙しくしている。
I'm busy with work during the day.
日中の気温が上がってきて暑い。
The daytime temperature has risen.
日中に電話をかけ直しますのでお待ちください。
I'll call you back during the day.