True Zodiac

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Sign 1 of 12 in the horoscope

Are you really an Aries?

By the horoscope, yes, and your sign stays yours. The stars behind it have quietly moved along, though: Aries runs from 21 March to 19 April 2026, and on those dates the Sun passes through Pisces and Aries. This is the sky behind your sign.

An engraved plate of Pisces, the Fishes, in the style of an old star atlas, with its real stars traced over the figure
Pisces, where the Sun spends 29 of Aries’s 30 days, engraved in the old atlas style with its real stars traced over the figure.

Aries against the sky, 2026

The horoscope says
21 March to 19 April · 30 days
The Sun is really in
  • Pisces 21 March to 18 April · 29 days
  • Aries 19 April · 1 day

The Sun reaches the constellation Aries on 19 April, in time for the sign’s last day.

Find the sky on your birthday

Why the sky behind Aries has moved

Aries’s dates were set more than two thousand years ago, pinned to the March equinox, when the signs took their names from the constellations the Sun was crossing. Since then Earth’s slow wobble, called precession, has carried the equinox about a twelfth of the way round the sky, roughly one day’s worth every seventy years. Your sign has kept its dates, and the stars behind them have simply moved along: that is why the Sun now spends Aries’s days in Pisces and Aries.

These dates are computed for 2026 from the constellation boundaries the International Astronomical Union fixed in 1930. A boundary can fall a day earlier or later in another year, so for the particular day, and hour, you were born the calculator will check it for you.