A return chart is cast the instant a planet arrives back at its exact natal degree — the Sun once a year near the birthday, the Moon roughly every 27.3 days. A fresh chart, layered onto the birth chart at regular, predictable intervals.
Return charts are read on their own terms first. Unlike transits, a return chart has its own Ascendant and houses — the location it's cast for genuinely changes the reading, which is why relocation is such a live technique.
A return chart is cast for the exact moment a planet arrives back at the precise zodiac degree it occupied natally. Because that degree repeats on a predictable cycle, return charts give astrology one of its most reliable forecasting tools: a fresh chart, layered on top of the birth chart at regular intervals.
Two dominate practice: the Solar Return, cast yearly when the Sun reaches its natal degree, and the Lunar Return, cast roughly every 27.3 days when the Moon reaches its natal degree.
Cast for the moment the transiting Sun returns to its exact natal degree — typically within a day of the birthday — the Solar Return chart is read as a snapshot of the year ahead. It has its own Ascendant, houses and planetary positions, entirely separate from the natal chart.
One distinctive technique is the relocated Solar Return: since the chart's houses depend on the location it's cast for, some astrologers calculate it for a different city — either where the person will actually be, or a location deliberately chosen to shift the year's emphasis. Most practitioners read the Solar Return alongside — not instead of — transits.
Cast every ~27.3 days — roughly thirteen per year — this chart works the same way but on a monthly cadence, tracking emotional tone and the texture of daily life. Because the Moon moves quickly, its return chart is highly sensitive to exact time and place, making relocation especially relevant: many astrologers deliberately choose the location to smooth out a difficult month.
Progressions symbolically advance the natal chart forward ("a day for a year"), tracking slow inner development. Return charts are freshly cast, brand-new charts for a real astronomical event, read alongside — not derived from — the natal chart. Progressions show unfolding; returns show a recurring, external checkpoint.