{"id":"vidhyamitra:day:-1625991-12-23:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/-1625991-12-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-1625991-12-23","date_display":"December 23, 1625992 BCE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":-1625991,"month":12,"day":23,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":-592171798.229167,"kali_year":-1622850,"ahargana":-592760263.7292,"sun":{"sidereal_longitude":271.1115,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":186.8114,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.6999,"elapsed_within_tithi_degrees":11.6999},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":186.8114,"elapsed_within_degrees":0.1447},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":97.9229},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":-1625991,"month":12,"day":23,"hour":6,"minute":30,"calendar":"julian"},"julian_day":-592171798.229167,"ahargana":-592760263.7292,"kali_year":-1622850,"ayanamsa_lahiri":-22718.2627,"grahas":{"sun":{"sidereal_longitude":271.1115,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":186.8114,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":-1.1997},"mars":{"sidereal_longitude":240.6694,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":288.1946,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":67.9386,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":274.6999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":98.9181,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":351.3346,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":171.3346,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":-1625991,"month":12,"day":23,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":-592171798.229167,"kali_year":-1622850,"ahargana":-592760263.7292,"sun":{"sidereal_longitude":271.1115,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":186.8114,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.6999,"elapsed_within_tithi_degrees":11.6999},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":186.8114,"elapsed_within_degrees":0.1447},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":97.9229},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.2,"elongation":84.3},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.2,"opposition_distance":95.7}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":-1625934,"saka_samvat":-1626069,"bengali_samvat":-1626584,"malayalam_era":-1626815,"nanakshahi_year":-1627460,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Aṣṭamī · Vikram -1625934 undefined · Śaka -1626069 undefined"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5}]},"validity":{"eternal":true},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga December 23, 1625992 BCE · Vidhyamitra","description":"Vedic pañchāṅga for December 23, 1625992 BCE: Kṛṣṇa Aṣṭamī · Svātī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/-1625991-12-23","hreflang_alternates":{"en":"https://vidhyamitra.com/day/-1625991-12-23","sa":"https://sa.vidhyamitra.com/day/-1625991-12-23","hi":"https://hi.vidhyamitra.com/day/-1625991-12-23","x-default":"https://vidhyamitra.com/day/-1625991-12-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T21:23:29.467Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-14T21:23:29.467Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}