An early morning would be waking up before 06:00, a late night would be going home after 06:00. ( a late night usually means you have been out with your friends enjoying yourself - rather than simply going to bed later than is normal) It's easier when you live on the Equator, 12 hours of light, 12 hours of dark.
What is the late afternoon?
Afternoon usually refers to any time between 12:00 and sunset. Evening is the time from when it starts to get dark, till it is clearly night time. ( the actual time would depend on where you live) Midnight is 12 pm it is an exact time. If you say late - it means towards the end of the time bracket.
What do you mean by early evening?
Definition of evening. 1 a : the latter part and close of the day and early part of the night. b chiefly Southern US and Midland US : afternoon. c : the period from sunset or the evening meal to bedtime.