Solunars by Aldebaran Sidereal Academy

To date, 11 monarchs have sat upon Britain's throne from the Houses of Hanover and Windsor. We have exact birth times for all of them except that we have no birth times for George I or George II. This leaves only 9 examples.

The terms Foreground, Middleground, and Background are used as defined here:
[broken link from old site]

By these definitions,

There is a 22.2% chance of a planet being Foreground (2 times out of 9: significant it at least 5 times).
There is a 33.3% chance of a planet being Middleground (3 times out of 9; significant if 0 or at least 6 times).
There is a 44.4% chance of a planet being Background (4 times out of 9; significant if 1 or less, or if 7 or more).

From these nine timed horoscopes, we learn the following:

Sun: F 2, M 4, B 3.
Moon: F 3, M 5, B1 [The 1 background time, it is also on an angle.]
Mercury: F 3, M 2, B 4
Venus: F 1, M 5, B 3
Mars: F 2, M 6, B 1 [1 M'ground time, it was also on an angle]
Jupiter: F 3, M 5, B 1 [1 M'ground time, it was also on an angle]
Saturn: F 3, M 4, B 2
Uranus: F 2, M 5, B 2 [1 M'ground time, it was also on an angle]
Neptune: F 2, M 5, B 2 [1 M'ground time, it was also on an angle]
Pluto: F 3, M 4, B 2 [1 B'ground time, it was also on an angle]

Of all of these figures, the one that appears to be significant is that Jupiter is not background. The 1 example of a background Jupiter was Edward VIII (better known as the late Duke of Windsor), who abdicated. In all other cases, Jupiter is Foreground or Middleground.

Counting both foreground placements and non-foreground angular contacts, Jupiter and the Moon have the most (4 each) and Venus has the least (1).

Updating this... King Charles III is, of course, the next exception. I'm not replacing him in the above because I think his reign may confirm the above. Nonetheless, I'll fold him into the numbers here, for reference:

With his ascension, to date 12 monarchs have sat upon Britain's throne from the Houses of Hanover and Windsor. We have exact birth times for all of them except George I and II. This leaves only 10 examples.

There is a 22.2% chance of a planet being Foreground (expect 2 times out of 10)
There is a 33.3% chance of a planet being Middleground (3 times out of 10).
There is a 44.4% chance of a planet being Background (4 times out of 10.
In each case, significance begins at about 3 more than expected.

From these ten timed horoscopes, we learn the following:

Sun: F 2, M 5, B 3.
Moon: F 3, M 6, B1 [The 1 background time, Moon is also on an angle.]
Mercury: F 3, M 3, B 4 [1 M'ground is in Nadir]
Venus: F 2, M 5, B 3
Mars: F 2, M 6, B 12 [1 M'ground time, Mars was also on an angle]
Jupiter: F 3, M 5, B 2 [1 M'ground time, it was also on an angle]
Saturn: F 3, M 5, B 2
Uranus: F 2, M 5, B 3 [1 M'ground time, it was also on an angle]
Neptune: F 3, M 5, B 2 [1 M'ground time, it was also on an angle]
Pluto: F 4, M 4, B 2 [1 B'ground time, it was also on an angle]

Counting both foreground placements and non-foreground angular contacts, Jupiter and the Moon have the most (4 each) and Venus has the least (1).

Sun: 2
Moon: 4
Mercury: 4
Venus: 2
Mars: 3
Jupiter: 4
Saturn: 3
Uranus: 3
Neptune: 4
Pluto: 5

Charles changes the balance considerably. Pluto is now foreground or angular most often (5x), with four planets having four occurrences: Moon, Mercury, Jupiter, Neptune. Charles added one each of Mercury, Neptune, and Pluto.