Is there a word for both day and night in English?

A 'day' is a 24 hour period. A 'day' is 'daytime' and 'nighttime'. 'Daytime' is shortened to 'day' in common usage, so 'all day' really refers to 'all of the daytime hours'. Communicating in English is different than learning to speak English. People who speak English think they understand English. read more

The English language seems to like to separate day and night as two distinct periods, so both are usually treated separately. Nevertheless, in common English, we may say something like: “I’ll see you this time on the following day”. read more

Nocturnal animals are active at night and sleep during the day. Diurnal animals are active during the day and sleep at night. So, someone who is a night owl is a nocturnal person. read more