Tradition

March 18 Zodiac Sign

Tradition: Western astrology. A tradition, not a forecast. Astrologers read it this way; the evidence does not.

By Suraj Giri

March 18 is Pisces on the dates most calendars use (February 19 to March 20). From 1950 to 2029, every birth hour on March 18 in US Eastern time fell in Pisces.

Check a March 18 Pisces against any sign

March 18 zodiac compatibility

By this site's zodiac points method, a March 18 Pisces scores highest with Cancer and Scorpio, a strong match at 8 of 8 points, then Taurus and Capricorn, a good match at 5 of 8.

PairVerdictPointsAspect
Cancer and Piscesstrong match8 of 8trine
Scorpio and Piscesstrong match8 of 8trine
Taurus and Piscesgood match5 of 8sextile
Capricorn and Piscesgood match5 of 8sextile

who a March 18 Pisces is compatible with

Today's Pisces love horoscope

Have your partner's birthday? Compare March 18 with your partner's birthday.

Scores come from this site's zodiac points method (formula 1.1), reviewed by Jahben R., astrologer, on 2026-09-23. How it works is on the methodology page.

Pisces at a glance for a March 18 birthday

  • Element: water
  • Modality: mutable
  • Ruler: Neptune (traditionally Jupiter)
  • Position: day 28 of 30 of Pisces (counted in a common year)
  • Next sign: Aries, from March 21
  • The Sun, 1950 to 2029 (US Eastern time): 26.8 to 29.1 degrees of Pisces

March 18 decan (Tradition)

In the triplicity system of decans, a tradition, March 18 falls in the third decan of Pisces (20 to 30 degrees), ruled by Pluto (traditionally Mars).

The older Chaldean system of decans assigns different rulers.

Famous people born on March 18

  • John Updike, novelist, born 1932
  • Salomé Zourabichvili, politician, born 1952
  • Lily Collins, actor, born 1989
  • Adam Levine, singer, born 1979
  • Fidel V. Ramos, politician, born 1928

Birth dates from Wikidata (CC0), fetched 2026-09-26.

A note on March 18 birthdays

This date holds day 28 of 30 of Pisces, spanning 26.8 to 29.1 degrees, with Aries opening two days on, March 21. In astrological tradition, water suits water, so Pisces flows easiest where Cancer or Scorpio sit, both sharing its own element, while earth steadies water, giving a calmer ease with Taurus or Capricorn. The neighbor just before this date, March 17, carries the same sign and the same pairings.

Questions people ask

What zodiac sign is March 18?
Pisces. March 18 falls in Pisces' dates on most calendars, February 19 to March 20, as day 28 of 30 of Pisces (counted in a common year).
Who is a March 18 Pisces most compatible with?
By this site's zodiac points method, a March 18 Pisces scores highest with Cancer and Scorpio (a strong match, 8 of 8 points), then Taurus and Capricorn (a good match, 5 of 8).
Does the birth year change the zodiac sign for March 18?
Not from 1950 to 2029 in US Eastern time: March 18 was Pisces for every birth hour in all 80 years. For other years or time zones, use the calculator on the zodiac sign dates page.

Birthdays around March 18

Sources