{"id":"vidhyamitra:day:1665-04-26:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1665-04-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1665-04-26","date_display":"April 26, 1665 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":1665,"month":4,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2329304.770833,"kali_year":4767,"ahargana":1740839.2708,"sun":{"sidereal_longitude":17.8414,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":154.0642,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":136.2228,"elapsed_within_tithi_degrees":4.2228},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.0642,"elapsed_within_degrees":7.3976},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":171.9056},"karana":{"half_tithi_index":22,"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":1665,"month":4,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2329304.770833,"ahargana":1740839.2708,"kali_year":4767,"ayanamsa_lahiri":19.1778,"grahas":{"sun":{"sidereal_longitude":17.004586000000018,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":151.00428599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":3.5498},"mars":{"sidereal_longitude":12.616585999999984,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":18.023285999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":304.747886,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":67.18688600000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":264.773686,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":101.9579,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.9579,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":1665,"month":4,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2329304.770833,"kali_year":4767,"ahargana":1740839.2708,"sun":{"sidereal_longitude":17.8414,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":154.0642,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":136.2228,"elapsed_within_tithi_degrees":4.2228},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.0642,"elapsed_within_degrees":7.3976},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":171.9056},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.55,"elongation":136.223},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.55,"opposition_distance":43.777}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1722,"vikram_samvatsara":"Kālayukta","saka_samvat":1587,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1072,"malayalam_era":841,"nanakshahi_year":196,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla 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 Śukla Dvādaśī · Vikram 1722 Kālayukta · Śaka 1587 Viśvāvasu"},"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":"1665-04-26T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga April 26, 1665 CE · Vidhyamitra","description":"Vedic pañchāṅga for April 26, 1665 CE: Śukla Dvādaśī · Uttara Phalgunī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1665-04-26","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1665-04-26","sa":"https://sa.vidhyamitra.com/day/1665-04-26","hi":"https://hi.vidhyamitra.com/day/1665-04-26","x-default":"https://vidhyamitra.com/day/1665-04-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-04T15:41:41.444Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-04T15:41:41.444Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}