Answer:
You can't ''use'' kayros as such in rhetorical analysis. By the contrary, you need to hold to kronos and apply kayros when the time is right, you may have a second or you may have a life time.
It all depends what you want to express, whom you want to address and your purpose behind your message. So, kayros is here and now, or it may be past due, or it may be around the corner, waiting for you to take the first step.
"The teacher appears, when the student is ready", not before or after, but when you audience is ready.
This is my offer to you - today was the right time -: Anacoretha