Since it first became an important topic in the early 20th Century, this Age has been characterized as the Sidereal Age of Pisces, nearing an end as the Aquarian Age begins to take effect. Gaia's Trident takes the well-known overlap of Ages into account. And, checking the historical timeline of cultural changes, it's clear that these Sidereal Ages ALONE don't correspond to any important Mundane differences until the middle of an Age and increasingly so towards the end. The Trident method would be necessary to explain this, IF there weren't Tropical Ages involved as well: In the case of these spiritual, Sidereal Ages, the Background, Traditionalistic Age would be holding back the Foreground, Individualistic Age (which is the one being tracked), until the Center-point, Societal Age crosses into the Sign occupied by the Foreground Age-Indicator--that would mean a delay of about 1000 years before a first-point Sidereal Age correlated to any fundamental changes in MUNDANE human behavior. HOWEVER, since the Sidereal Ages are SPIRITUAL in nature, and don't directly affect widespread mundane behavior, this apparent delay-factor is most likely the result of the coincidental matchups with the effective portions of the Tropical, mundane Ages: WHEN a Tropical Age becomes seriously effective depends on the Modality of the Age-sign; because, the Tropical-zodiac, unlike the Sidereal, is SEASONALLY-based. Four Age quadrants, and the beginning of a new seasonal quadrant is fraught with trepidation. Only the mundane manifestations of a Cardinal-sign Tropical Age are extremely delayed, including the current Tropical Age of Capricorn, which began by ushering in the fearful "Dark Ages"; but now, nearing its (first-point) end, is in full swing. The Tropical Fixed-sign Ages are just the reverse: By the end of the Cardinal-sign Age, the new seasonal quadrant has been firmly established, and it's resulting innovations have occurred--a Tropical Fixed-sign Age (like the Age of Aquarius) gets off to an immediate, effective start, intensifying and expanding on the developments already available. This was the case for the First Dynasty of Ancient Egypt, which arose around 3100 B.C., corresponding to the beginning of the Fixed-sign, Tropical Age of Scorpio. Egypt was close enough to the Tigris Euphrates Valley to absorb the Cardinal-sign Age innovations which had come into use at the very end of the Tropical, Cardinal-sign Age of Libra. These included city-states dedicated to gods and goddesses, writing, and sophisticated monuments; (for the Sidereal Ages, these same developments occurred towards the MIDDLE of the Sidereal Age of Taurus). So, following this pattern, the Fixed-sign TROPICAL Age of Aquarius is going to have an immediate impact on how we function in the relatively near future. The conventional version of the Sidereal Age of Aquarius begins in the same time-frame, but exactly when depends on the Ayanamsa used for the Chart. It might well be that the Sidereal Aquarian Age WILL have an immediate and profound spiritual effect, once the 1st-point of the Trident (conventionally located at the VEP), finally reaches the Sidereal boundary between Pisces and Aquarius in the Natal-chart.