Highly sensitive time for prayer, situation that’s awkward in retrospect (3-6)
I believe the answer is:
top-secret
But I can't explain it at all! Could you help me understand?
(Other definitions for top-secret that I've seen before include "Of the highest security classification" , "Highly classified" , "Extremely restricted (information)" , "(Of information) strictly not for public consumption" , "Very hush-hush" .)