{"id":"vidhyamitra:day:2230-09-12:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2230-09-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2230-09-12","date_display":"September 12, 2230 CE","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":2230,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2535804.770833,"kali_year":5332,"ahargana":1947339.2708,"sun":{"sidereal_longitude":140.6313,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":193.7494,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":53.1181,"elapsed_within_tithi_degrees":5.1181},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":193.7494,"elapsed_within_degrees":7.0827},"yoga":{"number":26,"name":"Indra","sum_longitude":334.3807},"karana":{"half_tithi_index":8,"name":"Bava"},"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":2230,"month":9,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2535804.770833,"ahargana":1947339.2708,"kali_year":5332,"ayanamsa_lahiri":27.0756,"grahas":{"sun":{"sidereal_longitude":141.90206799999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":194.609868,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":-3.5999},"mars":{"sidereal_longitude":172.48676799999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":151.52466800000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":163.86096799999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":143.51626799999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":317.352568,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":320.5942,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":140.5942,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"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":2230,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2535804.770833,"kali_year":5332,"ahargana":1947339.2708,"sun":{"sidereal_longitude":140.6313,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":193.7494,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":53.1181,"elapsed_within_tithi_degrees":5.1181},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":193.7494,"elapsed_within_degrees":7.0827},"yoga":{"number":26,"name":"Indra","sum_longitude":334.3807},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.6,"elongation":53.118},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.6,"opposition_distance":126.882}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2287,"vikram_samvatsara":"Subhānu","saka_samvat":2152,"saka_samvatsara":"Pramoda","bengali_samvat":1637,"malayalam_era":1406,"nanakshahi_year":761,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pañcamī · Vikram 2287 Subhānu · Śaka 2152 Pramoda"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"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":[]},"validity":{"eternal":false,"valid_from":"2230-09-12T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga September 12, 2230 CE · Vidhyamitra","description":"Vedic pañchāṅga for September 12, 2230 CE: Śukla Pañcamī · Svātī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2230-09-12","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2230-09-12","sa":"https://sa.vidhyamitra.com/day/2230-09-12","hi":"https://hi.vidhyamitra.com/day/2230-09-12","x-default":"https://vidhyamitra.com/day/2230-09-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-26T12:16:02.329Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-26T12:16:02.329Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}