This post is about 'progressed Sun' and the effect of the changing progressive sun signs (and progressive aspects in such a period). I used the picture of Sun and Earth above because the progressed Sun movement is based upon the movement of the earth.
The zodiac has 360 degrees, divided into 12 pieces, the sun signs. The sun moves through the zodiac in an average 365,25 days every year. Aries is the first sign of the zodiac. Capricorn is the 10th sign. Pisces is the last sign. Every day the Sun moves about 1 degree further in the zodiac. This is 'secondary progression'.
In June the Sun will move less than 1 degree, in December the Sun will move more than one degree per day. So when you are born in summer, it will take a little bit longer before your progressed Sun will reach the next sign, than when you are born in winter.While I write this, the Sun is in the 28th degree of Virgo, the 6th sign (more specific: in the 178th degree). The Sun will be in Libra in just 2,5 days.
The earth moves around the axis every day and one spot on earth 'sees' the complete zodia in one day. A progressed Sun-day ends when the earth is back on the same position on the axis as it was when we started calculated. We get an impression *) of the complete year (movement around the Sun, solar return) in one day (movement around the earth axis, the earth return:). The positions of 24 hours after birth give an impression of the situation 1 year after birth. The positions 30 days after the day of birth give insight in the 30th year after birth.
CHANGING SUN SIGN
When a person is born today, with the Sun in the 28th degree of Virgo, it will take 2years before his progressed Sun changes sign and another 32,5 years to change sign again. The period of about 2,5 years before and after the moment of change (Sun at 0,0 degree of a sign) is a period of changes to come and changes to get used to.
When you were born with Sun in Sagittarius (the ninth sign) your life style will change when your progressed Sun enters Capricorn, Aquarius and Pisces (and if you are very very lucky: Aries). This transition from one sign to another marks a period of change and transformation, it is like sunrise and sunset (and you see it coming). When you have a rather calm life the transition will be calm. When your life path is marked by steep hills, you will see notice a more sudden change. Sometimes life ends because of illnesses or age, sometimes a way of life ends because you get married, move to another state, start another job etc.
FIRST AND LAST ASPECTS
During the movement through the sings and degrees there are aspects with the natal chart. There are also aspects on the day after birth between the positions of the day after birth. Those aspects lay the foundation for possible development in the next period. If your sun sign changes and the first aspect is a square with Jupiter, you will start the new episode in a more positive situation than if the first aspect would be an opposition with Saturn. Especially in times of change, events or meetings 'hit' harder, whether they are positive or negative, because you are more vulnerable. That is logical. When you are moving from one place to another (packing your bags) and someone helps you to get started in the new place you will have a long lasting feeling of comfort. In case your new neighbors are hostile, you won't feel happy for long. I can imagine that a new sun sign feels like a fresh new start when the last aspect in sign was rather complicated, too.
HOW TO FIND YOUR PROGRESSED SUN
On this blog there are several examples of the effect of changing sun signs that you can find by clicking on the label 'changing sun sign'. If you don't have the means to calculate a chart, go to Astro.com to find the degree of your Sun. Every sign has 30 degrees. If your Sun was in the 15th degree at birth (that is when you are born around the 7th of the month), it will take the progressed Sun about 15, 45 and 75 years to move into the next sign. When you were born on the 23rd of the month you will be about 30, 60 and 90 when your progressed Sun sign changes.
*)I wrote 'impression' in Italics because there are limitations to this way of having a view in future conditions. In reality, the planets move faster than the movement in one day for a year. The progressions show a possible development based upon the situation at birth (expectations). Transits (and solar returns) tell us how the real world outside has evolved since that moment. History and time don't stop and the world moves on. It is the real world that has an impact on the nativity. That is why it is important to know the social, economic and cultural situation of a person (and the gender!). Charts, progressions, solar returns and transits tell their own story, like a blue print, a concept that has to be seen in the light of an even more complicated field: the world outside. And who knows how the world will look like in 30 years?
See the post about signs of changing times for more information about indications for changes in your life.
For more about progressions and changing sun signs I advice to read Cafe Astrology about Secondary Progression
One example of a famous person and changing progressed Sun signs: on October 9, 1967 Che Guevara was executed after a disastrous attempt to create a revolution on the mainland of America Latina. His Sun had move to Leo in 1966, when he left Cuba. In 1997 his body returned to Cuba. That was when his progressed Sun moved to Virgo.
Zie ook Astromarkt in het Nederlands...