A nakshatra is the lunar mansion your Moon occupied at birth — a 13°20' slice of the zodiac with its own ruling planet, deity and temperament. In Jyotish it says more about your instincts than your Sun sign does, and it is what the Vimshottari Dasha is calculated from.
Horse head · Ashwini Kumaras · 0°–13°20' Aries
Yoni · Yama · 13°20'–26°40' Aries
Razor/Flame · Agni · 26°40' Aries–10° Taurus
Ox cart · Brahma · 10°–23°20' Taurus
Deer head · Soma · 23°20' Taurus–6°40' Gemini
Teardrop · Rudra · 6°40'–20° Gemini
Bow & quiver · Aditi · 20° Gemini–3°20' Cancer
Lotus/Cow udder · Brihaspati · 3°20'–16°40' Cancer
Serpent · Nagas · 16°40'–30° Cancer
Throne · Pitrs · 0°–13°20' Leo
Hammock · Bhaga · 13°20'–26°40' Leo
Bed · Aryaman · 26°40' Leo–10° Virgo
Palm/Hand · Savitar · 10°–23°20' Virgo
Pearl/Jewel · Vishvakarma · 23°20' Virgo–6°40' Libra
Coral/Sword · Vayu · 6°40'–20° Libra
Archway · Indra-Agni · 20° Libra–3°20' Scorpio
Lotus · Mitra · 3°20'–16°40' Scorpio
Earring/Umbrella · Indra · 16°40'–30° Scorpio
Roots/Tail · Nirrti · 0°–13°20' Sagittarius
Fan/Tusk · Apas · 13°20'–26°40' Sagittarius
Elephant tusk · Vishvadevas · 26°40' Sagittarius–10° Capricorn
Ear/Footprints · Vishnu · 10°–23°20' Capricorn
Drum · Vasus · 23°20' Capricorn–6°40' Aquarius
Circle/Flower · Varuna · 6°40'–20° Aquarius
Sword/Two faces · Aja Ekapada · 20° Aquarius–3°20' Pisces
Twin/Serpent · Ahir Budhnya · 3°20'–16°40' Pisces
Fish/Drum · Pushan · 16°40'–30° Pisces
Not sure which nakshatra is yours?
It is decided by your Moon's exact position at birth, so it cannot be worked out from your date alone. Enter your birth details and Guruji computes it from the Swiss Ephemeris, along with the dasha period it puts you in.