Returns the Hindu panchang (daily Vedic almanac) for one date at one place: the five angas (tithi with paksha, nakshatra, yoga, karana, vara with its weekday lord) each with its end time, the lunar month in AMANTA reckoning with its adhika-masa flag (omitted entirely, never substituted, if the engine cannot supply the amanta month; plus the purnimanta month where the engine supplies it), sunrise/sunset/moonrise/moonset, abhijit muhurta, the auspicious choghadiya windows, and the inauspicious periods (rahu kaal, yamaganda, gulika kala). Use this for 'what is today's panchang / tithi / nakshatra' questions. If the user wants the FULL timing surface (all 16 choghadiya, the 24 horas, varjyam, bhadra, panchak, brahma muhurta) to choose a moment for an activity, call get_muhurta_timings instead. Nakshatra here is the DAY's nakshatra, not a person's birth star -- for that use get_birth_details. Read-only deterministic computation (Swiss Ephemeris, Lahiri ayanamsa); no writes, no auth, at least 30 requests/min/IP per server instance, plus a shared engine budget of at least 60/min/IP across all engine-backed tools. Any city worldwide; window times derive from that location's actual sunrise and sunset, so they differ city to city on the same date.