{"id":"vidhyamitra:day:2290-09-11:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2290-09-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2290-09-11","date_display":"September 11, 2290 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":2290,"month":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2557718.770833,"kali_year":5392,"ahargana":1969253.2708,"sun":{"sidereal_longitude":139.1557,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":213.9001,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":74.7444,"elapsed_within_tithi_degrees":2.7444},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":213.9001,"elapsed_within_degrees":0.5667},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":353.0558},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2290,"month":9,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2557718.770833,"ahargana":1969253.2708,"kali_year":5392,"ayanamsa_lahiri":27.9137,"grahas":{"sun":{"sidereal_longitude":140.568692,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":211.385092,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false,"latitude":-1.9417},"mars":{"sidereal_longitude":151.18249200000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":157.89189199999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":179.367392,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":98.40219200000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":331.0513920000001,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":239.485,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":59.485,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"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":2290,"month":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2557718.770833,"kali_year":5392,"ahargana":1969253.2708,"sun":{"sidereal_longitude":139.1557,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":213.9001,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":74.7444,"elapsed_within_tithi_degrees":2.7444},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":213.9001,"elapsed_within_degrees":0.5667},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":353.0558},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.942,"elongation":74.744},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.942,"opposition_distance":105.256}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2347,"vikram_samvatsara":"Subhānu","saka_samvat":2212,"saka_samvatsara":"Pramoda","bengali_samvat":1697,"malayalam_era":1466,"nanakshahi_year":821,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Saptamī · Vikram 2347 Subhānu · Śaka 2212 Pramoda"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"valid_from":"2290-09-11T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga September 11, 2290 CE · Vidhyamitra","description":"Vedic pañchāṅga for September 11, 2290 CE: Śukla Saptamī · Anurādhā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2290-09-11","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2290-09-11","sa":"https://sa.vidhyamitra.com/day/2290-09-11","hi":"https://hi.vidhyamitra.com/day/2290-09-11","x-default":"https://vidhyamitra.com/day/2290-09-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T21:03:00.678Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-01T21:03:00.678Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}