What is a transit calendar?
A transit is an aspect between a planet moving through the sky right now and a fixed position in your birth chart. Where a natal chart describes a starting condition, transits are the part of astrology that has dates attached: transiting Jupiter reaching a trine to your natal Venus is a specific event on a specific day, and it is what almost every "what does this month hold" reading is actually built on. A transit calendar plots those events across a window so you can see the shape of the next few months rather than one day at a time.
The engineering decision that makes such a calendar useful rather than useless is what to leave out. The Moon aspects every natal point in your chart every single month, so a calendar that includes it marks every day and therefore says nothing at all. This one scans the Sun, Mercury, Venus, Mars, Jupiter and Saturn - fast enough to produce dated events, slow enough that those events mean something. And each transit appears only on the day it is closest to exact, not on every day it happens to be within orb: a Saturn contact sits in range for weeks, and listing all of them would bury the days that matter. The peak is a date, not a clock time: positions are sampled once a day at noon UTC and calendar days run midnight to midnight UTC, so a contact that turns exact late in the evening where you live can show on the day before or after your local date.
Days are coloured by what they carry. Trines and sextiles are read as supportive, squares and oppositions as frictional, and a day with both is mixed - which is the ordinary case and not a failure of the method. It is worth being clear that supportive does not mean good and frictional does not mean bad: the hard aspects are the ones astrology associates with effort, change and growth, which is why the tradition treats them as necessary rather than unfortunate. Everything is computed in your browser from positions checked against JPL Horizons, and nothing you enter is uploaded.
How to use a transit calendar?
Enter your birth details
A date is enough for transits to your planets. Add a time and place and transits to your ascendant and midheaven join in, which are among the most-felt contacts.
Pick a window
Thirty days for the near term, six months to see a slow Saturn or Jupiter contact coming. Longer windows show fewer events per day, not more noise.
Scan the grid for shape
Colour tells you the tone of each day at a glance and the number tells you how much is happening. Long quiet runs are normal and meaningful in themselves.
Read the dated list
Every peak is listed with which body is transiting, which natal point it contacts, and how that aspect is traditionally read.
Key Features
Dated to the Peak
Each transit appears on the UTC day it is closest to exact, sampled at noon, not on the twenty days it happens to be within orb
The Moon Is Excluded
It aspects every natal point every month, so including it would mark every day and make the calendar meaningless
Tone at a Glance
Days are coloured supportive, frictional, mixed or quiet, with the count of contacts on each
Catches Retrograde Repeats
A transit that peaks, stations and peaks again shows up as separate dated events, because positions are computed rather than assumed to advance
Frequently Asked Questions
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