Combust Horaअस्त होरा
A planet is "combust" when it passes too close to the Sun in the sky, astronomically overwhelmed by the Sun's light — classically considered to weaken that planet's significations. This warning fires whenever the ruling planet of the current (or an upcoming) Hora is combust.
Only Jupiter and Venus combustion (Guru/Shukra Asta) carries a specific, classically codified restriction — blocking major ceremonies during that Hora. For Mars, Mercury, and Saturn, combustion is shown as informational only ("generally weakened") — no specific classical guidance links their combust status to particular activities, so the Hora's usual guidance still applies, just with reduced confidence.
Combustion is a real, slow-changing astronomical fact (a planet stays combust for days to weeks depending on which planet), re-checked at each Hora's own start time — since the Hora cycle repeats the same 7 planets roughly every hour, the same planet's Hora can recur several times in one day, and each occurrence is checked independently.