The Vajra nitya yoga

a birth, or an activity begun, under the Vajra nitya yoga, the panchanga's own yoga found by summing the Sun's and Moon's longitudes, not a planetary combination yoga

What the tradition reads

Vajra is the fifteenth of the twenty seven nitya yogas, the panchanga limb Wikipedia's article on the Panchangam describes as found from the sum of the Sun's and Moon's longitudes, unrelated to any planetary combination yoga formed by grahas placed together in a chart. Onesanatan.com reads its name as thunderbolt or diamond, names Varuna as its ruling deity, and classes the yoga generally inauspicious, describing it as bringing sudden, shocking events. Astrogle.com's own reading sits close to that caution rather than against it, describing a native as well off but also lecherous, unpredictable and forceful, a hardness the two sources broadly agree is unsettled rather than simply fortunate. A further discrepancy sits underneath the deity itself: Wikipedia's article on Vishwakarma names the vajra, the thunderbolt weapon this yoga is named for, as belonging specifically to Indra rather than to Varuna, a mismatch this entry records rather than resolves.

The story

Vishwakarma, Wikipedia's article records, is the divine architect who crafts the chariots of every deva and, among his most famous weapons, forges the vajra carried by Indra himself, a thunderbolt strong enough to end Vritra's long hold on the world's rivers. The same source gives the diamond hard weapon a further origin in some tellings, drawn from the bones of the sage Dadhichi, who gave his own body willingly so that a weapon capable of defeating the gods' enemies might be made from it at all. A yoga named for a weapon at once destructive and diamond bright, sourced in one telling from a craftsman's forge and in another from a sage's own voluntary sacrifice, fits astrogle.com's divided reading closely, force and generosity fused into a single hard object neither purely a blessing nor purely a danger on its own.

Written from

Corpus key nitya-yoga:Vajra.