My starting interpretation of Jupiter-Neptune aspects in mundane astrology was:
Events of powerful inspiration, faith, and idealism. Compelling surreal, unreasoned optimism, often with more show than substance. Belief-driven motivation and decision-making, fueling powerful opposing belief and bigotry. Excess, over-abundance, immoderation, glut. Entertainment themes (box office bonanzas, record-breaking movie attendance). For events that are not fun, festive, or celebratory, it typically signals an entertainment-themed setting.
Attempting to break this down to its most fundamental ideas:
I've previously summarized the Jupiter-Neptune principle as
social idealism, faith & belief, unreasoning optimism. To say this differently, I continue to find myself reducing Jupiter-Neptune events to the two basic roots of
unreasoned optimism and
show business.
Faith is just a synonym for "unreasoned optimism." (Notice I'm not saying
unreasonable optimism, just
unreasoned - it's based on something other than reason, which is pretty much the definition of faith.)
Social idealism and
hope are expressions of the optimism. However, they start to touch on another theme I've uncovered in the above research: There is a strong theme of
collectivism operating through Jupiter-Neptune. I think this is just a place where their principles overlap: Neptune is itself
collective in the sense of our interconnectedness (arising from the womb experience: see
Kid Gloves). Jupiter is fundamental social, oriented to community (a Jupiter basic that comes from the family or tribe sense). Overlap Jupiter and Neptune and you get
social collectivism, a sureness that we are better off (and more likely to prosper) together than alone.
One might summarize Jupiter-Neptune aspects by saying they are quite
non-Saturnian. Almost everything you can say about Jupiter-Neptune is contrary to the nature of Saturn. This communalism or collectivism - the sense that we will prosper better together - is the opposite of Saturn's commitment to immediate survival, especially for itself, with everyone needing to take care of themselves.
We see this in the examples above, especially with events that were formative of Soviet communism itself (an extreme form of this) and the formation and leveraging of labor unions. There is a recurring theme of socialism from mild to extreme forms, and quite a few labor strikes, along with other social bonding. Bonding together for humanitarian actions is another variation.
We see the same themes of community among nations. International leagues, communities, and "treaty organizations" are formed. International affiliation and alliance is in the news but not individual alliances so much as
communities of nations. Therefore, we usually see diplomacy succeed: a Cuba-USSR trade pack, the Japanese surrender ending WW II, the Oslo Accords, and numerous other examples of diplomacy and treaties. There are, however, two stark examples of diplomats succeeding and then the U.S. Congress rejecting their results.
Civil rights themes are quite numerous, primarily in binding people together in community to stand for collective prospering and collective well-being over divisiveness. Among such events, we find the three Selma marches; the Civil Rights Act abolishing racial segregation; the Fair Housing Act; college student collective protests and other activism against the Vietnam War; Martin Luther King's "mountain top" speech, and then national protests days later after his murder; Thurgood Marshall's confirmation as the first black Supreme Court justice; and the final destruction of the Berlin Wall.
There is also the reaction stirred against these actions, such as the community resistance against the Selma marches, King's murder, other civil rights worker murders, the conservative activism that overthrew Miami's gay rights laws, and the mobilization of intensified police or military resistance (in America, South Korea, and other places) against student protests.
Another place the
unreasoned optimism plays is in finance, where the aspect is well-known to be inflationary and fuel investment (gambling), even to the formation of unsustainable market gains.
Market optimism might be a suitable summary phase. Upsurge periods in the stock market included the first time the DJIA closed above its pre-crash 1929 top and the market tops just before the dot-com bust. Jupiter-Neptune aspects have marked the creation of NASDAQ and the Federal Reserve (also showing a bias toward collectivism in banking), occasions to propel investment like the first great Texas oil gusher, Nixon's ending of Bretton Woods, and the publication of the economic theories of Keynes. I take this broadly as a favoring of speculation.
Another event category includes many cases of removal of leaders. Many events share this one characteristic, but are quite different in details. Some are the consequence of activism, of the collective opposing an individual (but not many). Some have scandal or something similar (but not many). I think the most common element is
disillusionment, a direct result of the unreasoned optimism (since sometimes that optimism is ill-placed), and this might be the best commonality. These events ae as mild as no-confidence votes and as extreme as revolutions, coups, and assassination attempts (a lot of coups!). LBJ decided not to seek reelection when he knew he couldn't win. Jimmy Carter lost much of the nation's confidence over the Iran hostage crisis. There is usually a sense of failed leadership, but I think this is just the form that disillusionment takes.
Of course there are many examples of
religious themed events. Joseph Smith announced the Second Manifesto of the Mormon church mere days before Aleister Crowley received the channeled dispensation for his religion. Various Vatican events are on the list, and events that occurred during religious pilgrimage. Several events around he beginning and furthering of the Cristero War in Mexico, which was a rebellion of Catholics over secular laws.
There is a
space travel side theme. I think this is fantasy mixed with futurism but, broadly, it seems to have a life of its own. Besides some critical NASA events, the discovery of
gravitational waves, and key breakthroughs in animal cloning, some of the great film successes under this aspect have been important sci-fi landmarks (Fritz Lang's Metropolis, 2001: A Space Odyssey, Star Wars, Avatar; even Space Mountain at Disneyland). There is more entertainment-themed events, but these are representative
Entertainment is a primary theme of its own, the "show business" root idea of Jupiter-Neptune I mentioned above - fantasy + theater. Many events that were primarily something else (e.g., fires, murders) occur in a theater or church setting when Jupiter-Neptune is present. Warner Brothers Pictures, Walt Disney Company, Disney World in Orlando, the Academy of Motion Picture Arts & Sciences, and Nickelodeon all began under this aspect. Entertainment companies invested in major new film technology. The first Academy Awards and first Emmy Awards were held. Major Broadway and film productions launched, including many productions that, in their time, were the biggest financial successes ever.
Finally, there are weather themes. Jupiter-Neptune is the distinctive aspect of tornadoes, and the lists above identified several major tornado outbreaks. The existence of this aspect in space seems to indicate tornado proneness all by itself. There are a few instances of related phenomena (floods, even hurricanes) with Jupiter-Neptune prominence, but tornadoes are the main focus.