Cusp FAQ

In standard astrology, no. At the moment you were born the Sun was in one sign or the other, and a full birth chart (using year, time, and place) settles which. The idea of "cusp people" blending both signs is a popular interpretation, not a rule shared by all astrologers.

The Sun enters each sign at a slightly different moment each year, shifting by about a day because the calendar year and the solar year don't line up exactly. Sites round differently. Time zones matter too. See What is a cusp?.

There is no agreed width. Some astrologers use two or three days either side of a sign change; others reject the idea of a cusp altogether. Cusp Me uses a window from three days before to two days after each conventional start date.

Only if you want to know for certain which sign the Sun was in, or your rising sign and Moon sign. For birthdays near a boundary, the exact time and place of birth can change the answer.

In astrology, the rising sign (ascendant) is the zodiac sign on the eastern horizon at the moment of birth. It changes roughly every two hours, so it needs your birth time and place. The cusp finder only covers sun signs.

No. Controlled studies have not found that astrological signs predict personality or life events. Cusp Me presents astrology as a cultural tradition people enjoy, alongside the real astronomy. See The sky versus the zodiac.

The Sun does pass in front of the constellation Ophiuchus each year. Western tropical astrology doesn't use constellations, though; it divides the sky into twelve equal 30° signs tied to the seasons, so Ophiuchus isn't part of it.