My camera is Canon 60D. I want to take time-lapse photography, sunrise and sunset. How to set the best exposure? Aperture.

Sunrise and sunset change the most, so how can you stay the same? ...

My experience:

Use file A (it is important to coordinate with exposure compensation and correction);

Use the original recording;

Then use the peripheral exposure mode, three at a time, and five at a time;

There must be some photos you need when you come back. ...

(It means that I didn't answer the composition question)