Domain
Mind, emotion, mother. Chandra rules the manas — mind — and the feminine archetype of nurture. A weak Chandra manifests as emotional turbulence and disturbed sleep.
Sacred day
Monday. Activate the yantra at sunrise on this day for the strongest field.
Bija mantra
Om Shram Shrim Shraum Sah Chandraya Namaha
Chant 108 times daily during the activation period (40 days minimum), and 27 times daily thereafter.
Recommended yantra
Chandra Yantra Card — the traditional Bhagya Cards pairing for Chandra (Moon).
When to invoke
If your kundali shows Chandra (Moon) as a weak or afflicted graha, or if you are currently in its mahadasha or antardasha, the yantra is the standard upaaya. Combine with the bija mantra, a charity in the planet's name, and (for some grahas) fasting on the appropriate day.
Cross-references
See also: Yantras by zodiac sign · Navagraha — full glossary entry · All yantras.