Sunrise and Wee hours

Sunrise noun - The first appearance of light in the morning or the time of its appearance.

Wee hours and sunrise are semantically related In some cases you can use "Wee hours" instead a noun "Sunrise".

Sunrise and wee hours are semantically related in dawn topic. Sometimes you can use "Sunrise" instead a noun phrase "Wee hours", if it concerns topics such as beginning of day, first part of the day.