{"id":"vidhyamitra:day:2220-05-21:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2220-05-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2220-05-21","date_display":"May 21, 2220 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":2220,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2532038.770833,"kali_year":5322,"ahargana":1943573.2708,"sun":{"sidereal_longitude":32.6324,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":244.5189,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":211.8865,"elapsed_within_tithi_degrees":7.8865},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":244.5189,"elapsed_within_degrees":4.5189},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.1513},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"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":2220,"month":5,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2532038.770833,"ahargana":1943573.2708,"kali_year":5322,"ayanamsa_lahiri":26.9316,"grahas":{"sun":{"sidereal_longitude":33.184856000000025,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":242.08405600000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":4.4784},"mars":{"sidereal_longitude":36.32675599999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":13.632955999999979,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":212.53105600000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":348.087056,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":201.19595600000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":160.135,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":340.135,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":2220,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2532038.770833,"kali_year":5322,"ahargana":1943573.2708,"sun":{"sidereal_longitude":32.6324,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":244.5189,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":211.8865,"elapsed_within_tithi_degrees":7.8865},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":244.5189,"elapsed_within_degrees":4.5189},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.1513},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.478,"elongation":148.113},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.478,"opposition_distance":31.887}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2277,"vikram_samvatsara":"Śrīmukha","saka_samvat":2142,"saka_samvatsara":"Raudra","bengali_samvat":1627,"malayalam_era":1396,"nanakshahi_year":751,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Tṛtīyā · Vikram 2277 Śrīmukha · Śaka 2142 Raudra"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"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":"2220-05-21T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga May 21, 2220 CE · Vidhyamitra","description":"Vedic pañchāṅga for May 21, 2220 CE: Kṛṣṇa Tṛtīyā · Mūla.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2220-05-21","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2220-05-21","sa":"https://sa.vidhyamitra.com/day/2220-05-21","hi":"https://hi.vidhyamitra.com/day/2220-05-21","x-default":"https://vidhyamitra.com/day/2220-05-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-25T15:44:26.435Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-25T15:44:26.435Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}