♂Combustion Calendar

♂ Mars Combustion 2026

The Sun catches up with Mars only once every 25.3 to 26.3 months, and then Mars stays hidden for 52 to 78 days. Here is each Mars combustion from 2025 to 2035, with the cazimi to the minute.

Updated

●Clear of the Sun
Next combustion: to (in 458 days), cazimi at 1°00′ Aries.

The rarest combustion of the five

Seen from Earth, Mars and the Sun are heading the same way through the zodiac at nearly the same pace whenever they meet: Mars covers 0.64° to 0.78° a day, the Sun 0.95° to 1.02°. That is why the Sun takes more than two years to come round to Mars again, and why, once it does, Mars stays inside the 17° combust zone for weeks. At each conjunction Mars is on the far side of the Sun, between 2.39 and 2.68 AU away, near its greatest distance and at its faintest.

Mars is the planet of heat, effort, cutting and quarrels. In the traditional reading a combust Mars has heat without reach: the will to act is there but cannot get out. Modern astrologers tend to describe the same weeks as low drive and short tempers at once, and treat them as a time to plan a fight rather than start one.

Once every 25.3 to 26.3 months: how the cycle runs

The five Mars cazimis in the data fall 769 to 802 days apart. Each falls 37° to 72° ahead of the last in the zodiac, so across these years the meetings move through Capricorn, Aries, Gemini, Cancer and Leo.

The cycle is a little over two years, so the combustions skip calendar years: 2027, 2029, 2031, 2033 and 2035 have no combust Mars day at all.

Each Mars cazimi in the data, the gap since the one before, and the daily motions that set how long Mars stays combust.
CazimiAtSince the lastCombustMars per daySun per daySun gains per day
19°12′ Capricorn69 days0.772°1.019°0.247°
1°00′ Aries802 days78 days0.779°0.993°0.214°
4°17′ Gemini795 days66 days0.706°0.961°0.255°
19°28′ Cancer778 days56 days0.655°0.954°0.299°
26°19′ Leo769 days52 days0.636°0.962°0.326°

All Mars combustions, 2025 to 2035

Five periods. Mars moves 33° to 61° forward while it is combust, so each one crosses two or three signs and ends in a later sign than it began, as the path column shows.

Times in
Mars combustions by year of the cazimi; every one is a superior conjunction. Times in UTC.
Combust fromtoDaysCazimiCazimi atPathPasses the Sun's center
2025 · no Mars cazimi
2026 · 1 cazimi
6919°12′ Capricorn24°08′ Sagittarius → 17°24′ Aquarius0°56′ south
2027 · no Mars cazimi
2028 · 1 cazimi
781°00′ Aries0°08′ Pisces → 1°07′ Taurus0°48′ south
2029 · no Mars cazimi
2030 · 1 cazimi
664°17′ Gemini9°30′ Taurus → 26°39′ Gemini0°16′ north
2031 · no Mars cazimi
2032 · 1 cazimi
5619°28′ Cancer0°13′ Cancer → 7°26′ Leo0°58′ north
2033 · no Mars cazimi
2034 · 1 cazimi
5226°19′ Leo9°27′ Leo → 12°40′ Virgo1°08′ north
2035 · no Mars cazimi

Mars combustion in 2026

Mars is combust at the start of 2026, in a period that began on December 7, 2025 and ends on February 14, 2026: 69 days within 8°30′ of the Sun, with the cazimi on January 9, 2026, at 11:41 UTC, at 19°12′ Capricorn.

Times in
Superior conjunctionBegan in 2025

to

69 days combust · enters at 24°08′ Sagittarius, leaves at 17°24′ Aquarius
Combust
to
Cazimi (exact)
at 19°12′ Capricorn
Within 17′ of the Sun
to (55.0 hours)
Closest approach
0.0′ in longitude; Mars passes 0°56′ south of the Sun's center
Under the beams
to
Cazimi in Capricorn

Capricorn is Mars's exaltation, the sign where effort becomes disciplined and productive, so even while combust here Mars keeps working through the winter. Engineering, construction and any task needing stamina in the cold go well but without public credit. The cazimi is among the best traditional days for beginning a demanding build.

Why one Mars combustion runs 78 days and another 52

What matters is how much ground the Sun gains on Mars each day, which in these years ranges from 0.214° to 0.326°. Sorted by that gain, the combustions fall in exact order of length: the smallest gain gives the longest stay, the largest gain the shortest.

The gain is small when Mars itself moves fast, and Mars moves fastest when it is nearest the Sun in its orbit. At the March 21, 2028 cazimi, the longest combustion at 78 days, Mars was 1.39 AU from the Sun and moved 0.779° a day. At the August 19, 2034 cazimi, the shortest at 52 days, it was 1.66 AU out and moved 0.636°. Those are also the nearest and farthest of the five.

A Mars cazimi lasts days, not hours

The slow approach stretches the cazimi as well: the 17′ window opens and closes over 41.7 to 63.4 hours, 1.7 to 2.6 days. No other planet on these calendars has a cazimi window as long as the longest Mars one. At these cazimis Mars passes 0°16′ to 1°08′ north or south of the Sun's center, never across the disk in these years.

The next Mars cazimi is on March 21, 2028, at 02:36 UTC, at 1°00′ Aries, and Mars holds the 17′ zone from March 19 at 18:53 UTC to March 22, 2028, at 10:18 UTC.

Electional astrologers who want Mars strong for the start of hard physical work, a training block or a contest treat these days as the one usable stretch inside the combustion. Background on the term: what cazimi means.

Living with a combust Mars

Fits the weeks Mars is hidden

  • Plan the campaign, the build or the season of training in detail
  • Keep exercise regular and moderate, and take recovery seriously
  • Work through anger privately before it lands on anyone
  • Service the car, sharpen the tools, check the smoke alarms
  • Save the one decisive move that cannot wait for the cazimi days

Wait for Mars to clear the Sun

  • Opening a lawsuit, a takeover bid or a public dispute
  • Chasing personal records or starting a punishing program
  • Rushed demolition, or work with fire and blades done in a hurry
  • Treating a dip in stamina as a sign of failure
  • Promising deadlines that depend on a burst of effort

Why Mars is never combust and retrograde together

Mars goes retrograde only around its opposition, when Earth passes between it and the Sun, and is combust only around its conjunction, on the far side of the Sun. The two are about a year apart. In these years the last direct station came 319 to 394 days before a Mars cazimi, and the next retrograde station 308 to 366 days after it.

So none of the five combustions overlaps a retrograde, and none can. Anyone reading a slow, frustrating stretch in a Mars combustion is reading the combustion alone.

RetrogradeCombust
Where Mars isOpposite the Sun, at its nearest to EarthBehind the Sun, 2.39 to 2.68 AU from Earth
How oftenOnce a cycle, about every 25.3 to 26.3 monthsOnce a cycle, the same interval
Length61 to 81 days52 to 78 days
OverlapNoneNone
Each cazimi and the retrogrades on either side. The planet is moving direct throughout every combustion.
CazimiLast turned directDays beforeNext turns retrogradeDays afterThat retrograde ends
319366
355330
385308
394320
383361

Mars combust in a birth chart

Over these years 8% of days have a combust Mars, in long blocks every other year, so whole birth cohorts share it and the years between have none. The traditional reading of a natal combust Mars is drive in the service of the self: ambition tied closely to identity, anger slow to show and quick to turn inward. The Sun's sign shows the arena.

A natal Mars cazimi, inside the 1.7- to 2.6-day window, is read as courage and identity working together, the Sun lending Mars its authority.

To see the separation in your own chart, open the birth chart calculator and compare the Sun and Mars.

Years with and without a Mars combustion

Five of the 11 years have no combust Mars day. In the others the count runs from 25 days, where a period is split by New Year, to 80.

5
cazimis, 2025 to 2035
327
days combust (8.1% of the time)
52 to 78
days per combustion
64.2
days on average
YearCazimisDays combustLongest that year
2025025none
202614569 days (cazimi )
202700none
202818078 days (cazimi )
202900none
203016766 days (cazimi )
203100none
203215756 days (cazimi )
203300none
203415352 days (cazimi )
203500none

How the Mars periods were calculated

A high-precision ephemeris gives the positions, geocentric and apparent, in the tropical zodiac. A Mars combustion runs from the moment the longitudes of Mars and the Sun come within 8°30′ of each other until they separate again (17° for under the beams, 17′ for cazimi); each crossing is found to the second and checked by a second, independent run. The daily motions in the cycle table are measured over a full day around each cazimi.

Dates in the text are UTC; the cards and tables switch to your own time zone after the page loads. For the conventions behind every number on the site, see the about page.

Mars combustion: common questions

When is the next Mars combustion?

Mars is next combust from February 10 to April 29, 2028 (UTC dates), 78 days in all. Mars and the Sun are exactly aligned on March 21, 2028, at 02:36 UTC, 1°00′ Aries.

How often does Mars go combust?

About every 25.3 to 26.3 months: the five Mars cazimis from 2025 to 2035 are 769 to 802 days apart. Every other calendar year has no combust Mars day.

Can Mars be combust and retrograde at the same time?

No. Mars is retrograde near its opposition and combust near its conjunction, about a year later or earlier. Between 319 and 394 days separate each Mars cazimi from the previous direct station, and 308 to 366 from the next retrograde one.

Why are some Mars combustions longer than others?

Because Mars's speed changes along its orbit. The longest, 78 days around the March 21, 2028 cazimi, came with Mars moving 0.779° a day, nearly keeping pace with the Sun; the shortest, 52 days around August 19, 2034, with Mars at 0.636° a day.

How long does a Mars cazimi last?

41.7 to 63.4 hours within 17′ of the Sun, 1.7 to 2.6 days, because Mars and the Sun move almost together when they meet.