Lets look at the Astrology first...
-Assuming the start in 1947 with the Roswell event, we have:
Pluto/Saturn in 10º Leo, Neptune in 10º Libra, Uranus in 24º Gemini
-The Lakenheath-Bentwater incidents occurs during Cold war in 1956-57
Saturn in 0º Sag, Uranus 2º Leo, Pluto 0º Vir, Neptune 0º Sco
-NATO detects many ufos in radar over Europe in 1961
Saturn opposition, Neptune 10º Sco, Pluto 7º Vir opposes Moon, Uranus 24º Leo
-English Roswell occurs in 1980
-Pluto/Saturn square Sun, Uranus in 22º Sco, Neptune in 22º Sag
-Roswell goes mainstream near 1990
Uranus and Neptune oppose Sun, Pluto in 16º Sco, Saturn opposition
-In 1997 occurs the Brazilian Roswell.
Pluto in 4º Sag squares Moon, Uranus in 8º Aqu, Neptune in 0º Aqu, Saturn square to Sun
It looks like special events occur in early degrees (10º Leo, 0º/7º Vir, 10º Lib, 0-4º Sag, 0-8º Aqu), in mid Scorpio, in late Sagittarius, Scorpio, Leo or Libra (22-24º)
Predictions for full disclosure
Saturn makes a square in the entire 2011, when curiously Uranus, Neptune and Pluto are all in early degrees of different signs. Then, in famous late 2012 and early 2013, Saturn makes a square to itself, as Uranus and Pluto line to make a powerful aspect to the natal Sun. Adding to this, Neptune conjuncts Moon, which adds a powerful public event. It is in 2014-2016, Uranus and Pluto make a square to the Sun, a big powerful one! I guess this should be the time of full disclosure, after maybe one or two oficial statement in 2011 or 2012. Neptune is still conjunct with natal Moon. Precisely the mid 2010s are agitated times, so this makes terrible sense. Then, it comes the 2020s revolutionary times I have often spoken.
Even more radical, is in 2031-2036, as Neptune squares the Sun, Uranus conjuncts, Pluto has its own opposition, and Saturn returns to its natal position, I cannot see any more clear time for open contact. And this is precisely the time of a great economic and social expansion, so I guess alien technological and information exchange.
Alternatively, we could have some Roswell-like incident in 2014 and there is no oficial full disclosure, and this only occurs in 2030s, but I consider it less likely.
However, we cannot forget that in mid 2010s there will be an alignment in early cardinal degrees, which promises to bring great change. This was precisely where planets were in 1969, when Man went to the Moon. So look for late 2010 and 2011 for the first signs of disclosure coming. But only full disclosure by 2013-2015.
Based in 1947 we have had:
- Saturn returns in 1976, 2005, 2034
- Saturn oppositions in 1962, 1991, 2020
- Uranus opposition and return in 1989 and 2031
- Neptune/Uranus opposition to natal Sun in 1990
- Uranus square in 1972 and 2014
- Saturn/Pluto square to natal Sun in 1980
RECENT EDIT 2020s: Still sometimes I feel that alien disclosure will occur fully manifest during the 2020s, due to all Pluto in Aquarius, Uranus in Gemini, Neptune in Aries, waxing cycles, this feels as a very radical transformating, progressive, positive, expansive and revolutionary period! A right astrological energy to predict something as dramatic as an alien disclosure. Otherwise, it might be full reconstruction after environmental disaster or a world war. Or a full world revolution after a period of economic depression. Anyways, it looks like a very positive, expansive and revolutionary period!