Hail to you brothers and sisters with Satan,
I need to understand my birth minute and hour. I don't know exact time so I need to test. My natal MC is suspicious to me. It could be MC Virgo or MC leo but I don't understand which one I have.
Or do you have any techniques for understanding exact birth time ?
To determine whether Midheaven Virgo or Midheaven Leo suits you more, you must have an understanding of your Sun placement (as ruler of MC Leo) and your Mercury placement (as ruler of MC Virgo).
The Midheaven (or medium coeli) point represents our public image, reputation, and how we voluntarily express ourselves amongst other people. Any planets or points aspecting it strengthens or hinders our self-presentation, and highlight the themes and areas of life we are publically involved with.
Read up the general interpretations of the following:
Your Sun's House Position
Your Sun Sign
Your Sun's Aspects
Your Mercury's House Position
Your Mercury Sign
Your Mercury's Aspects
Compare the meanings... Which do you feel best reflects how you are in your career or when interacting with people out in the open?
Also analyze any changed house placements if any natal planet is very close to a house cusp.
My intuitive guess would be Midheaven Virgo because you sound inquisitive and receptive to a logical take on this matter.