{"id":"vidhyamitra:day:2266-02-15:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2266-02-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2266-02-15","date_display":"February 15, 2266 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":2266,"month":2,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2548744.770833,"kali_year":5367,"ahargana":1960279.2708,"sun":{"sidereal_longitude":298.0082,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":47.1522,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":109.144,"elapsed_within_tithi_degrees":1.144},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":47.1522,"elapsed_within_degrees":7.1522},"yoga":{"number":26,"name":"Indra","sum_longitude":345.1603},"karana":{"half_tithi_index":18,"name":"Taitila"},"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":2266,"month":2,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2548744.770833,"ahargana":1960279.2708,"kali_year":5367,"ayanamsa_lahiri":27.5705,"grahas":{"sun":{"sidereal_longitude":298.551864,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":44.60396400000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false,"latitude":3.5534},"mars":{"sidereal_longitude":170.78776399999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":270.56626400000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":172.594564,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"venus":{"sidereal_longitude":321.8212639999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":26.60506399999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":354.9707,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":174.9707,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":2266,"month":2,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2548744.770833,"kali_year":5367,"ahargana":1960279.2708,"sun":{"sidereal_longitude":298.0082,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":47.1522,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":109.144,"elapsed_within_tithi_degrees":1.144},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":47.1522,"elapsed_within_degrees":7.1522},"yoga":{"number":26,"name":"Indra","sum_longitude":345.1603},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.553,"elongation":109.144},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.553,"opposition_distance":70.856}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2323,"vikram_samvatsara":"Siddhārthī","saka_samvat":2188,"saka_samvatsara":"Parābhava","bengali_samvat":1673,"malayalam_era":1442,"nanakshahi_year":797,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Daśamī · Vikram 2323 Siddhārthī · Śaka 2188 Parābhava"},"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":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","relevance":0.5}]},"validity":{"eternal":false,"valid_from":"2266-02-15T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga February 15, 2266 CE · Vidhyamitra","description":"Vedic pañchāṅga for February 15, 2266 CE: Śukla Daśamī · Rohiṇī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2266-02-15","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2266-02-15","sa":"https://sa.vidhyamitra.com/day/2266-02-15","hi":"https://hi.vidhyamitra.com/day/2266-02-15","x-default":"https://vidhyamitra.com/day/2266-02-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-28T23:11:38.270Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-28T23:11:38.270Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}