Krishna Saptami and the Fading Gibbous

Krishna Saptami is the twenty-second tithi overall, the seventh day of the dark fortnight, sharing the solar character of the seventh tithi, whose presiding deity is Surya. It is a Bhadra or wholesome day in the fivefold grouping. The waning Moon is now close to its last quarter. The panchanga reads the seventh tithi of either fortnight as generally favourable. As with all dark-fortnight days, its use in electional astrology is weighed against the diminishing light, the bright fortnight being generally preferred for auspicious beginnings while the waning days suit completion, dissolution, and ancestral rites. These are the conventions of the Hindu luni-solar calendar.

Surya's assignment to the seventh tithi in both fortnights is one of the more consistently applied deity associations in the panchanga, since the Sun's own daily and seasonal movement provides a steady reference independent of the Moon's phase, unlike deity associations tied to specific mythological events that sometimes sit awkwardly with a tithi's waxing or waning character. The waning seventh's use in ancestral rites, where the tradition permits, draws on the same general logic that favours the dark fortnight for matters of dissolution, completion and remembrance of the dead, a broad orientation running through the whole Krishna paksha half of the panchanga rather than being specific to Saptami alone.