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May 21 zodiac sign: Gemini or Taurus

If you were born on May 21, your zodiac sign is Gemini (May 21 – June 20). It is a mutable air sign ruled by Mercury. It is a cusp day, though: on this date the Sun often moves into the neighbouring sign, Taurus. Details and times below.

Sign: ♊ Gemini
Element: air
Modality: mutable
Ruling planet: Mercury
Decan: 1st decan (0–10°), Jupiter
Tarot card of the sign: The Lovers
Decan card: Eight of Swords
Day number: 3
Birthstone: emerald

Is May 21 a cusp date?

Across 1950–2025 (76 years), on May 21 the Sun was: all day in Gemini: 35 years; changed from Taurus to Gemini during the day: 41 years. If you were born in a change year, your birth time decides: before the Sun's ingress you have the earlier sign, after it the new one.

US Eastern time

Time of the sign change in each year (US Eastern time)

1950: 11:27
1951: 17:15
1953: 04:52
1954: 10:47
1955: 16:24
1957: 04:10
1958: 09:51
1959: 15:42
1961: 03:22
1962: 09:16
1963: 14:58
1965: 02:50
1966: 08:32
1967: 14:18
1969: 01:50
1970: 07:37
1971: 13:15
1973: 00:54
1974: 06:36
1975: 12:23
1977: 00:14
1978: 06:08
1979: 11:54
1982: 05:23
1983: 11:06
1986: 04:28
1987: 10:10
1990: 03:37
1991: 09:20
1994: 02:48
1995: 08:34
1998: 02:05
1999: 07:52
2002: 01:29
2003: 07:12
2006: 00:31
2007: 06:11
2011: 05:21
2015: 04:45
2019: 03:59
2023: 03:09

Traits: Gemini

Gemini lives on curiosity: conversations, ideas and new information give them energy. Flexible, witty and quick to learn. The challenge is scattered focus and picking one path.

1st decan: Jupiter adds optimism, generosity and an appetite for growth.

Birthday numerology: 21

Three: expression, humour and ease with words and creating.

Best matches

Traditionally Gemini gets on most easily with signs of the same element (Libra, Aquarius) and with the complementary element, fire (Aries, Leo, Sagittarius).

Learn more

Questions

What zodiac sign is May 21?

If you were born on May 21, your zodiac sign is Gemini (May 21 – June 20). It is a mutable air sign ruled by Mercury.

Which tarot card matches May 21?

Gemini corresponds to The Lovers in tarot, and the 1st decan to the Eight of Swords.

What does birthday number 21 mean?