{"id":"vidhyamitra:day:2284-04-13:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2284-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2284-04-13","date_display":"April 13, 2284 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":2284,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2555376.770833,"kali_year":5385,"ahargana":1966911.2708,"sun":{"sidereal_longitude":355.315,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":311.7747,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":316.4598,"elapsed_within_tithi_degrees":4.4598},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":311.7747,"elapsed_within_degrees":5.1081},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.0897},"karana":{"half_tithi_index":52,"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":2284,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2555376.770833,"ahargana":1966911.2708,"kali_year":5385,"ayanamsa_lahiri":27.8242,"grahas":{"sun":{"sidereal_longitude":355.829673,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":313.314173,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":-3.535},"mars":{"sidereal_longitude":14.214572999999973,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":341.853473,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":354.552573,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":320.53947300000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":262.081273,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":3.5754,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":183.5754,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","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":2284,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2555376.770833,"kali_year":5385,"ahargana":1966911.2708,"sun":{"sidereal_longitude":355.315,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":311.7747,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":316.4598,"elapsed_within_tithi_degrees":4.4598},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":311.7747,"elapsed_within_degrees":5.1081},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.0897},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.535,"elongation":43.54},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.535,"opposition_distance":136.46}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2341,"vikram_samvatsara":"Īśvara","saka_samvat":2206,"saka_samvatsara":"Raktākṣī","bengali_samvat":1691,"malayalam_era":1460,"nanakshahi_year":815,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Dvādaśī · Vikram 2341 Īśvara · Śaka 2206 Raktākṣī"},"festivals":[],"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":"2284-04-13T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga April 13, 2284 CE · Vidhyamitra","description":"Vedic pañchāṅga for April 13, 2284 CE: Kṛṣṇa Dvādaśī · Śatabhiṣā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2284-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2284-04-13","sa":"https://sa.vidhyamitra.com/day/2284-04-13","hi":"https://hi.vidhyamitra.com/day/2284-04-13","x-default":"https://vidhyamitra.com/day/2284-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T05:39:02.401Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-01T05:39:02.401Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}