A finer-grained zodiac
The 360° zodiac is divided into 12 signs (30° each) — and also into 27 nakshatras (13°20' each). The two systems overlay. Each sign contains two-and-a-quarter nakshatras.
The nakshatra is the lunar mansion — the section of sky the Moon occupies on any given night. In ancient India, this was the primary timekeeping system: each night had its nakshatra, each nakshatra had its presiding deity, its symbol, its planetary lord.
Why the Moon nakshatra matters most
In Vedic astrology, where your Moon falls — its sign and its nakshatra — is usually treated as more revealing than your Sun. The Moon describes the mind, the emotional baseline, the moment-to-moment self. Two people born the same day in different time-zones can share a Sun sign but have wildly different Moon nakshatras — and feel completely unlike each other.
The 27 names
Ashwini, Bharani, Krittika, Rohini, Mrigashira, Ardra, Punarvasu, Pushya, Ashlesha, Magha, Purva Phalguni, Uttara Phalguni, Hasta, Chitra, Swati, Vishakha, Anuradha, Jyeshtha, Mula, Purva Ashadha, Uttara Ashadha, Shravana, Dhanishta, Shatabhisha, Purva Bhadrapada, Uttara Bhadrapada, Revati.
Each is ruled by one of the 9 grahas, in a cycle of three: Ashwini→Ketu, Bharani→Venus, Krittika→Sun, Rohini→Moon… and so on. This planetary rulership underpins the Vimshottari Dasha system.
How nakshatras show up in practice
Vedic muhurat (auspicious timing) uses the nakshatra of the day to choose timing for weddings, foundations, journeys. Vedic relationship matching (Ashtakuta) compares the Moon nakshatras of two people across eight axes. Your nakshatra is used to choose your starting letter for naming a child.
Today's Panchang on this site shows the running nakshatra of the day.