UtilibyWritten by the Utiliby editorial team · Last updated October 15, 2026 · Rules and formulas reviewed October 2026
What this free online zodiacal releasing calculator does
Zodiacal releasing is one of the most important timing techniques in Hellenistic astrology. It takes a sensitive point, usually the Lot of Spirit or the Lot of Fortune, and releases it through the zodiac one sign at a time. Each sign rules a stretch of life, and each stretch is divided into smaller stretches, so that you can zoom from decades to months to days. This free online zodiacal releasing calculator does the calculation for you: it lists the major periods with start and end dates, opens the minor periods inside any of them, marks peak periods and applies the loosing of the bond.
Enter your birth date and the positions of the Ascendant, Sun and Moon. The tool works out the lots, shows a timeline of your major periods with a marker for the date you choose, and gives tables you can copy, download or print.
How to use the calculator
- Enter your birth date.
- Enter the sign, degree and minute of the Ascendant, Sun and Moon, and leave sect on automatic unless your chart needs a manual setting.
- Choose the lot to release from, or pick a sign yourself.
- Optionally set an as-of date. With the box empty, the tool uses today.
- Read the tiles: they show the current level 1, 2 and 3 periods and their ruling planets.
- Pick a level 1 period to see its level 2 sub-periods, then a level 2 period to see level 3.
- Copy, download or print the tables.
How the periods are calculated
Take the sign of the chosen lot. That sign rules the first level 1 period, and its length in years is the minor years of its ruling planet: Mars 15 for Aries and Scorpio, Venus 8 for Taurus and Libra, Mercury 20 for Gemini and Virgo, the Moon 25 for Cancer, the Sun 19 for Leo, Jupiter 12 for Sagittarius and Pisces, and Saturn 30 for Aquarius with Capricorn reduced to 27. The next period belongs to the following sign, and so on around the zodiac and back to the start until the end of life.
Each level 1 period is divided into level 2 sub-periods. They begin from the sign of the parent period and run through the signs in order, and the number of the minor years is now counted in months instead of years. Level 3 uses the same numbers as days. The last sub-period is cut when the parent period ends, and the next parent begins again from its own sign. A year is 360 days and a month 30 days.
Minor years by sign
| Sign | Ruler | Years | Sign | Ruler | Years |
|---|---|---|---|---|---|
| Aries | Mars | 15 | Libra | Venus | 8 |
| Taurus | Venus | 8 | Scorpio | Mars | 15 |
| Gemini | Mercury | 20 | Sagittarius | Jupiter | 12 |
| Cancer | Moon | 25 | Capricorn | Saturn | 27 |
| Leo | Sun | 19 | Aquarius | Saturn | 30 |
| Virgo | Mercury | 20 | Pisces | Jupiter | 12 |
Together the twelve signs add up to 211 years, so after one full circuit of the zodiac the releasing starts over. Aquarius takes Saturn's full 30 years while Capricorn takes 27. The reason for this exception is not given in the sources.
Loosing of the bond and peak periods
The sub-periods of a long sign can run through all twelve signs before the parent period ends. When that happens the next sub-period does not go back to the parent sign: it jumps to the sign opposite the parent sign and continues from there. For example, inside a Cancer period the thirteenth sub-period is Capricorn. This is the loosing of the bond. It only happens in signs whose periods exceed the 17.6 years that twelve sub-periods take, so it affects Gemini, Cancer, Leo, Virgo, Capricorn and Aquarius.
A peak period is one whose sign is angular to the Lot of Fortune: the 1st, 4th, 7th or 10th sign from it. The first and tenth are the strongest, the seventh is moderate and the fourth is the lightest. Peaks mark times of heightened activity and importance. They do not tell you whether the activity is welcome.
Worked example
Take a day chart with the Ascendant at 12°15′ Cancer, the Sun at 24° Gemini and the Moon at 3° Libra. The Lot of Spirit is the Ascendant plus the Sun minus the Moon, which is 3°15′ Aries, so releasing from Spirit begins with Aries for 15 years, then Taurus for 8, Gemini for 20 and Cancer for 25. Within the first Aries period the sub-periods run Aries for 15 months, Taurus 8 months, Gemini 20 months and so on. Fortune is at 21°15′ Libra, so Aries is the 7th sign from Fortune and the Aries period is a moderate peak.
Differences between authors and programs
Zodiacal releasing is reconstructed from the surviving texts of Vettius Valens, and modern authors differ on several points. These include the exact length of the year, the handling of the loosing of the bond at levels 3 and 4, whether Fortune and Spirit in the same sign are separated, and how the birth time is used. This tool follows a common set of choices and states them, so you can check them against your own source. Dates can differ from other programs by days or, over long spans, by months.
Privacy, limits and responsible use
The calculator runs in your browser. Your birth date and positions are saved in local storage on your device so the page reopens where you left it, and are never sent to a server. The tool does not compute planetary positions. It is meant for study and entertainment. Astrology is an interpretive tradition, not a validated predictive science, and nothing here replaces advice from a doctor, lawyer, financial adviser or mental-health professional. Please do not make major life decisions on the basis of a period.
Frequently asked questions
What is zodiacal releasing?
Zodiacal releasing, from the Greek aphesis, is a Hellenistic timing technique. The lot of Fortune or Spirit is released through the zodiac sign by sign, with each sign ruling a period whose length is the minor years of its ruling planet. Periods nest inside each other in levels.
How do I use this free online zodiacal releasing calculator?
Enter your birth date and the sign, degree and minute of the Ascendant, Sun and Moon. Choose whether to release from Spirit or Fortune. The tool lists the level 1 periods with dates and lets you open the sub-periods inside any of them.
Which lot should I release from?
Spirit is most often used for career, action and purpose, and Fortune for body, health and circumstances. Many astrologers look at both. The tool lets you switch.
What are the minor years used for each sign?
Aries 15, Taurus 8, Gemini 20, Cancer 25, Leo 19, Virgo 20, Libra 8, Scorpio 15, Sagittarius 12, Capricorn 27, Aquarius 30 and Pisces 12. Capricorn takes 27 rather than Saturn's 30, an exception reported in the sources.
What are major and minor periods in zodiacal releasing?
Level 1 periods are the major periods, each as long as the sign's minor years in years. Level 2 sub-periods are the minor periods, using the same number as months. Level 3 uses days. Each level divides the one above it.
How long is a year in zodiacal releasing?
360 days, with a month of 30 days. This is the convention in the Hellenistic method. It means level 1 dates drift slightly from calendar years.
What is the loosing of the bond?
In a long sign period, once the sub-periods have run through all twelve signs, the next one does not return to the first sign. It jumps to the sign opposite the parent sign and continues from there. This is called the loosing of the bond.
Which periods have a loosing of the bond?
Only those long enough for the sub-periods to complete a full cycle of twelve, which is about 17.6 years of level 1. In practice these are Gemini, Cancer, Leo, Virgo, Capricorn and Aquarius.
What is a peak period?
A peak is a level 1 or 2 period whose sign is angular to the Lot of Fortune, meaning the 1st, 4th, 7th or 10th sign from it. The 1st and 10th are the strongest. A peak marks heightened activity, not necessarily good events.
Why does the tool need the Ascendant, Sun and Moon?
They give the Lot of Fortune and the Lot of Spirit. By day, Fortune is the Ascendant plus the Moon minus the Sun and Spirit the reverse. At night the two swap.
What happens if Fortune and Spirit are in the same sign?
Some authors move Spirit forward one sign so the two releasings differ. This tool does not make that adjustment, so check your own chart if the signs match.
Why do my dates differ from other software?
Programs differ on the length of the year, on whether the birth time is used, and on how sub-periods are cut at the end of a parent period. Dates here use 360-day years from midnight at the start of the birth date.
Can I see the periods for a past or future date?
Yes. Type any date in the as-of box and the current periods will follow it.
Can I download or print the periods?
Yes. Download gives the level 1 and selected level 2 and 3 periods as a CSV file. Print or save outputs only the periods, timeline and chart summary.
Is my birth data stored?
Only in your own browser's local storage so the page reopens where you left off. Nothing is uploaded. Clear your site data to remove it.
Is zodiacal releasing a prediction?
It is a traditional timing method used in astrology, which is an interpretive tradition, not a validated predictive science. Use the results for study and entertainment.
Is the tool free?
Yes. It is a free online calculator with no sign-up or limits.
Sources and further reading
- Vettius Valens, Anthology, Book IV, translated by Mark Riley (2010), on the releasing of the lots through the signs.
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (Amor Fati Publications, 2017), chapters on zodiacal releasing.
- Stellium documentation, Zodiacal Releasing and Planetary Years (stellium.readthedocs.io), used to cross-check the minor years and the loosing of the bond.
- Kerykeion, Zodiacal Releasing introduction (kerykeion.net), used to cross-check the method.
- Augurine, Zodiacal Releasing tool notes (augurine.com), used to cross-check the method.
Sources were consulted in October 2026. Standards and rules can change, so always check the official page for your situation.