The phrase “when Aries transitions to Taurus” is asking for the time of year when the Sun leaves the zodiac sign Aries and enters Taurus , which happens around April 19–21 each year , depending on the year and time zone.

Core timing

  • In modern Western astrology, the Sun is in Aries roughly March 21 to April 19.
  • It then moves into Taurus roughly April 20 to May 20.
  • So the transition from Aries to Taurus usually occurs on or about April 20 , with slight shifts by a day either way depending on the specific year and where you are on Earth.

If you’re asking for a crossword clue

The exact phrase “when Aries transitions to Taurus” has also appeared as a New York Times–style crossword clue , where the intended answer points to this late‑April moment when the Sun moves from Aries into Taurus (around April 20).

Why dates can vary a bit

Astrology uses the actual astronomical position of the Sun along the ecliptic, so:

  • Leap years and the precise length of the solar year mean the calendar date of each sign’s start can shift by a small amount.
  • That is why people born on April 19–21 sometimes need their exact birth time and place calculated to know definitively whether their Sun sign is Aries or Taurus.

Information gathered from public forums or data available on the internet and portrayed here.