Nobody needs to pray at an exact time.
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In Catholic countries right through the mid 20th century, bells for the Angelus rang four times a day. People stopped and prayed.
Priest pray the office each evening, and I think, morning.
Monks and nuns in a variety of religions pray on schedules.
Unless you are at a service, there are no exact needs to pray at any exact time, every day.
These are peoples wants and desires to pray at certain times.
Need. Not want or desire.