{"id":"vidhyamitra:day:2280-04-20:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2280-04-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2280-04-20","date_display":"April 20, 2280 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":2280,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2553922.770833,"kali_year":5381,"ahargana":1965457.2708,"sun":{"sidereal_longitude":2.1908,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":232.9345,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":230.7437,"elapsed_within_tithi_degrees":2.7437},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":232.9345,"elapsed_within_degrees":6.2679},"yoga":{"number":18,"name":"Varīyān","sum_longitude":235.1253},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2280,"month":4,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2553922.770833,"ahargana":1965457.2708,"kali_year":5381,"ayanamsa_lahiri":27.7686,"grahas":{"sun":{"sidereal_longitude":2.720027000000016,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":232.40882699999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":2.0888},"mars":{"sidereal_longitude":349.161127,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":4.8868269999999825,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":237.964027,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":5.877126999999973,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":216.110727,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":80.6153,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":260.6153,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2280,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2553922.770833,"kali_year":5381,"ahargana":1965457.2708,"sun":{"sidereal_longitude":2.1908,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":232.9345,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":230.7437,"elapsed_within_tithi_degrees":2.7437},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":232.9345,"elapsed_within_degrees":6.2679},"yoga":{"number":18,"name":"Varīyān","sum_longitude":235.1253},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.089,"elongation":129.256},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.089,"opposition_distance":50.744}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2337,"vikram_samvatsara":"Śrīmukha","saka_samvat":2202,"saka_samvatsara":"Raudra","bengali_samvat":1687,"malayalam_era":1456,"nanakshahi_year":811,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Pañcamī · Vikram 2337 Śrīmukha · Śaka 2202 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":false,"valid_from":"2280-04-20T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga April 20, 2280 CE · Vidhyamitra","description":"Vedic pañchāṅga for April 20, 2280 CE: Kṛṣṇa Pañcamī · Jyeṣṭhā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2280-04-20","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2280-04-20","sa":"https://sa.vidhyamitra.com/day/2280-04-20","hi":"https://hi.vidhyamitra.com/day/2280-04-20","x-default":"https://vidhyamitra.com/day/2280-04-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T22:23:56.284Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-31T22:23:56.284Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}