UtilibyWritten by the Utiliby editorial team · Last updated October 15, 2026 · Rules and formulas reviewed October 2026
What this free online annual profections and firdaria calculator does
Two of the oldest timing techniques in astrology are the annual profection and the firdaria. Both answer the same question: which planet is in charge of this stretch of time? This free online annual profections calculator gives you the profected Ascendant, the lord of the year, the lord of each month and a wheel that shows it all at once. The same page works as a firdaria calculator, listing the major and sub-periods of the traditional 75-year cycle with start and end dates.
Enter your birth date and your Ascendant sign. Choose day or night for the firdaria and, if you like, add the sign of each planet so the tool can show which of them sit in the profected house. Nothing is uploaded.
How to use the calculator
- Enter your birth date and the sign of your Ascendant.
- Choose whether your chart is a day chart or a night chart.
- Optionally add planet signs under Natal planets by sign.
- Leave the as-of date empty for today, or choose another date to look at any year, past or future.
- Read the profection tiles, the wheel and the monthly table, then scroll to the table by age.
- Scroll to the firdaria section for the major periods and pick one to see its sub-periods.
- Copy, download or print the results.
How annual profections work
An annual profection moves forward by one sign for each year of life. At birth, the profection is the Ascendant and the 1st house. On the first birthday it passes to the 2nd house, on the second to the 3rd, and so on until the twelfth birthday, when it returns to the 1st house. The sign of the profected house is the focus of the year, and the traditional ruler of that sign is the lord of the year. Houses are counted whole sign from the Ascendant sign.
The method comes from the Hellenistic tradition, where Vettius Valens and Paulus Alexandrinus describe it, and it was used continuously through the medieval period. Astrologers look at the lord of the year in the birth chart: its sign, house, dignity and aspects, and then at the transits it receives during the year.
Months and days follow the same logic on a smaller scale. At each birthday the month profection begins in the year's profected sign and moves one sign per month. Dividing a month into twelve parts gives the daily profection of about two and a half days per sign.
Houses by age
| House | Ages | Topics traditionally linked |
|---|---|---|
| 1st | 0, 12, 24, 36, 48, 60, 72, 84 | Body, self, new starts |
| 2nd | 1, 13, 25, 37, 49, 61, 73 | Money, possessions |
| 3rd | 2, 14, 26, 38, 50, 62, 74 | Siblings, travel, learning |
| 4th | 3, 15, 27, 39, 51, 63, 75 | Home, family, endings |
| 5th | 4, 16, 28, 40, 52, 64, 76 | Children, pleasure |
| 6th | 5, 17, 29, 41, 53, 65, 77 | Work, health, service |
| 7th | 6, 18, 30, 42, 54, 66, 78 | Partners, open conflict |
| 8th | 7, 19, 31, 43, 55, 67, 79 | Shared resources, crises |
| 9th | 8, 20, 32, 44, 56, 68, 80 | Travel, belief, study |
| 10th | 9, 21, 33, 45, 57, 69, 81 | Career, public life |
| 11th | 10, 22, 34, 46, 58, 70, 82 | Friends, hopes |
| 12th | 11, 23, 35, 47, 59, 71, 83 | Retreat, hidden matters |
These topics are traditional house meanings, not predictions. How a year goes depends on the whole chart.
How firdaria work
Firdaria, also spelled firdarat, fardar or fardardar, come from Persian astrology and were developed further by Abu Ma'shar and later medieval authors such as Bonatti. A complete cycle lasts 75 years. In a day chart it begins with the Sun for 10 years, then Venus 8, Mercury 13, the Moon 9, Saturn 11, Jupiter 12 and Mars 7, followed by the North Node 3 and the South Node 2. In a night chart it begins with the Moon 9, then Saturn 11, Jupiter 12, Mars 7, the Sun 10, Venus 8 and Mercury 13, again followed by the nodes.
Each planetary period is divided into seven equal sub-periods. The first belongs to the major lord, and the others follow the order Sun, Venus, Mercury, Moon, Saturn, Jupiter, Mars, starting from the planet that comes after the major lord. The two node periods are not subdivided. After 75 years the cycle starts again.
Worked example
Someone born on 15 June 1990 with Sagittarius rising and a day chart is 36 on 15 October 2026. Thirty-six is three full cycles of twelve, so the profection has come back to the 1st house, Sagittarius, and the lord of the year is Jupiter. In the firdaria, a day chart starts with the Sun for 10 years, Venus for 8 (to age 18), Mercury for 13 (to 31) and the Moon for 9 (to 40). At 36 the Moon is the major lord. The Moon's period of 9 years is split into seven sub-periods of about 1.29 years, starting with the Moon, then Saturn, Jupiter, Mars, Sun, Venus and Mercury.
Differences between authors
Authors differ on several points: where the nodes fall in the night order, whether sub-periods use equal division, how long a year is, and whether profections begin on the birthday or at another moment. The tool follows the most common choices and states them above. If your teacher or book uses another convention, treat the result as a cross-check.
Privacy, limits and responsible use
The calculator runs in your browser. Your birth date and Ascendant are saved in local storage on your device 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 time lord.
Frequently asked questions
What is an annual profection?
An annual profection is a Hellenistic timing technique. Each year of life moves a point one sign forward from the Ascendant, so that at age 0 it is the 1st house, at age 1 the 2nd house and so on. The ruler of that sign is the lord of the year.
How do I use this free online annual profections calculator?
Enter your birth date and the sign of your Ascendant. The tool shows your age, the profected house and sign, the year lord, a wheel, the monthly profections and a table by age. Add a date to see any other year.
How do I find my profected Ascendant?
Count one sign forward from your Ascendant sign for each year of age. If your Ascendant is Sagittarius, at age 36 the profected Ascendant is back in Sagittarius, because 36 is a multiple of 12.
What is the lord of the year?
The traditional ruler of the profected sign. If the profected sign is Pisces, Jupiter is the lord of the year. The planet is read through its natal condition, its aspects and the transits it receives that year.
How does the profection cycle work with houses?
The cycle repeats every 12 years. Ages 0, 12, 24, 36, 48 and so on are 1st-house years. Ages 7, 19, 31 and 43 are 8th-house years, and so on through the houses.
How do monthly profections work?
Within each year, the profected sign moves forward one sign per month, starting from the profected sign of the year at each birthday. The ruler of that sign is the lord of the month.
What are daily profections?
Each month is divided again into twelve parts of about two and a half days, and the profected sign moves forward one sign for each part. The tool shows the daily profected sign for the date you choose.
Does a profection use whole-sign houses?
Yes. Profections work with whole signs from the Ascendant sign, whichever house system you use for other work.
What are firdaria?
Firdaria, also written fardars or fardardar, are a system of planetary periods from Persian and medieval Arabic astrology. A 75-year cycle gives each planet and the lunar nodes a major period, and each major period is divided into seven sub-periods.
What are the firdaria periods?
In a day chart: Sun 10 years, Venus 8, Mercury 13, Moon 9, Saturn 11, Jupiter 12, Mars 7, North Node 3 and South Node 2. In a night chart it starts with the Moon: Moon 9, Saturn 11, Jupiter 12, Mars 7, Sun 10, Venus 8, Mercury 13, then the nodes.
Why does firdaria depend on day or night?
Because the order starts with the luminary of the sect: the Sun in a day chart and the Moon in a night chart. A day chart is one where the Sun is above the horizon at birth.
How are the firdaria sub-periods calculated?
Each planetary major period is split into seven equal parts. The first belongs to the major planet itself, and the rest follow the order Sun, Venus, Mercury, Moon, Saturn, Jupiter, Mars, starting from the planet after the major lord. The two nodes are not subdivided.
Where do the nodes go in a night chart?
This tool places them after Mercury, at the end of the 75-year cycle, as in the Abu Ma'shar tradition. Some readings of Bonatti place them directly after Mars, which changes the lords after age 39.
How long is a firdaria year?
The tool uses 365.25 days, so dates are close to calendar anniversaries but not identical.
Can I download or print the tables?
Yes. Download gives the profections by age, the firdaria periods and the sub-periods as a CSV file. Print or save outputs only the summary, wheel and tables.
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 this a prediction?
No. Profections and firdaria are traditional timing techniques within astrology, which is an interpretive tradition and not a validated predictive science. Use the results for study and entertainment.
Sources and further reading
- Vettius Valens, Anthology, Book IV, translated by Mark Riley (2010), on profections.
- Paulus Alexandrinus, Introductory Matters, on the annual profection.
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (Amor Fati Publications, 2017), chapter on profections.
- Abu Ma'shar, On the Revolutions of the Years of Nativities, and Guido Bonatti, Book of Astronomy, on the firdaria.
- Firdaria, Wikipedia, used to cross-check the day and night sequences and the sub-period rule.
Sources were consulted in October 2026. Standards and rules can change, so always check the official page for your situation.