Planetary Synodic Cycles Timeline

"NEW" indicates the start of new planetary synodic cycle. This is when the new synodic cycle theme begins.
"FULL" indicates the midpoint of the planetary synodic cycle. This is the culmination of the synodic cycle theme--the point of realization.

The Inner Planets (Mercury & Venus)

On the NEW synod the Sun conjoins the (retrograde) inner planet in a geocentric chart, and the planet is at its inferior conjunction (in front of the sun). The Earth conjoins the inner planet in a heliocentric chart. The sidereal location is heliocentric (looking from the sun toward the inner planet-Earth alignment).

On the FULL synod the Sun conjoins the (direct) inner planet in the geocentric chart, except now the planet is at its superior conjunction (on the far side of the sun). The Earth is opposite the inner planet in the heliocentric chart.

The Outer Planets (Mars - Pluto)

On the NEW synod the Sun is opposite the (retrograde) outer planet in the geocentric chart. The Earth conjoins the outer planet in the heliocentric chart.

On the FULL synod the Sun conjoins the outer planet in the geocentric chart. The Earth is opposite the outer planet in the heliocentric chart.

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