"Early morning" is the time just after night ends and the day begins, often from dawn to midmorning. It is usually quiet and cool, when people wake, commute, or exercise before daily routines start.
When I reached C Company lines, which were at the top of the hill, I paused and looked back at the camp, just coming into full view below me through the grey mist of early morning. Evelyn Waugh
I always was an early-morning or late-night writer. Early morning was my favorite; late night was because you had a deadline. And at four in the morning, you make up some of your most absurd jokes. Joss Whedon
Early morning cheerfulness can be extremely obnoxious. William Feather
...there was cement in her soul. It had been there for a while, an early morning disease of fatigue, shapeless desires, brief imaginary glints of other lives she could be living, that over the months melded into a piercing homesickness. Chimamanda Ngozi Adichie
If you see an animal running in the early morning know that it is running away from something more scarily than the due. African Proverb
A strong person doesn't rush to wake up early morning. African Proverb