It's morning. People get up in the morning and the day begins.
It's afternoon. People eat lunch in the afternoon.
It's evening. People eat dinner in the evening.
It's night. At night people go to bed.
It's daytime. It's light during the day because the sun is up.
It's nighttime. It's dark at night because the sun is down.
People eat lunch in the afternoon.
People go to bed at night.
People get up in the morning and the day begins.
Our day begins in the morning and ends at night.