This are the astrological aspects based on number 20:
- vigintile: H20 = 18º
- (tri)vigintile, 3·H20 = 54º
- (hepta)vigintile, 7·H20 = 126º
- (nona)vigintile, 9·H20 = 162º
"Tweenty--for in this we find in keeping with those numbers as are set in purpose; for two and naught is as an initial entrance into that of the days as are set for man's existence in an experience... In this number there is that wich prevents the ones who through that of purely the seeker for only personal interests would be loath to part, and he who is able to contribute little may not be hindered by same." (Edgar Cayce)
The vigintile aspect (harmonic 20) belongs to
the family of cultural self-organization aspects (harmonic 5), which
derive from the division of the circle (360º) by the number 5, as the quintile (harmonic 5) and the decile (harmonic 10).
To understand better its meaning, the number 20 can be decomposed into 5 * 4, because it shows the combination of the cultural self-organization of number 5 (quintile), with the effort and ability to overcome resistances of number 4 (square).
The vigintil (harmonic 20) is related with carrying out laborious tasks, for which few people have the required personal motivation to dedicate themselves to them, but which are very necessary as a point of support for cultural advancement.
Michael Gauquelin, a statistician who collected -- in the 1950s, with the help of his wife -- the birth data of thousands of eminent professionals and calculated the natal positions of the planets in the house system, by hand, without the help of a personal computer, has the opposition Mercury-Jupiter, with the Sun in vigintile@18º with Mercury (orb 0º05') and in (none)vigintile@162º with Jupiter (orb 0º02').
Sean Connery, actor of the movie "Indiana Jones and the Last Crusade" (1989), has Mercury in aspect vigintile with Venus.