Any way to snap the timeline to keyframe?

Hi, I wonder if there’s any tool/way to snap the timeline to a keyframe (of the selected layer or sub-layer).
At now, if I move my rig, sometimes I realize that I was working on the wrong keyframe, and I need to fix it.

Please explain more. The keyframe is already on the timeline so there’s nothing to snap to.

Normally to move a character you select/make a keyframe at the positions needed to define
the movement. I’m not sure how snapping would factor into this. If you provide some
type of visual reference I might better understand your request.