{"id":"vidhyamitra:day:1728-04-11:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1728-04-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1728-04-11","date_display":"April 11, 1728 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":1728,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2352299.770833,"kali_year":4829,"ahargana":1763834.2708,"sun":{"sidereal_longitude":2.0285,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":19.935,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.9064,"elapsed_within_tithi_degrees":5.9064},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":19.935,"elapsed_within_degrees":6.6016},"yoga":{"number":2,"name":"Prīti","sum_longitude":21.9635},"karana":{"half_tithi_index":2,"name":"Bālava"},"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":1728,"month":4,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2352299.770833,"ahargana":1763834.2708,"kali_year":4829,"ayanamsa_lahiri":20.0572,"grahas":{"sun":{"sidereal_longitude":1.2698080000000118,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":17.346108000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":3.7453},"mars":{"sidereal_longitude":133.852008,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":4.270807999999988,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":45.29030799999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":330.113208,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":308.0413080000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":323.5722,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":143.5722,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":1728,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2352299.770833,"kali_year":4829,"ahargana":1763834.2708,"sun":{"sidereal_longitude":2.0285,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":19.935,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.9064,"elapsed_within_tithi_degrees":5.9064},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":19.935,"elapsed_within_degrees":6.6016},"yoga":{"number":2,"name":"Prīti","sum_longitude":21.9635},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.745,"elongation":17.906},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.745,"opposition_distance":162.094}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1785,"vikram_samvatsara":"Durmati","saka_samvat":1650,"saka_samvatsara":"Kīlaka","bengali_samvat":1135,"malayalam_era":904,"nanakshahi_year":259,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha (Adhika) Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha (Adhika) Śukla Dvitīyā · Vikram 1785 Durmati · Śaka 1650 Kīlaka"},"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":"1728-04-11T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga April 11, 1728 CE · Vidhyamitra","description":"Vedic pañchāṅga for April 11, 1728 CE: Śukla Dvitīyā · Bharaṇī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1728-04-11","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1728-04-11","sa":"https://sa.vidhyamitra.com/day/1728-04-11","hi":"https://hi.vidhyamitra.com/day/1728-04-11","x-default":"https://vidhyamitra.com/day/1728-04-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T05:09:46.493Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-30T05:09:46.493Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}