{"id":"vidhyamitra:day:1664-02-02:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1664-02-02","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1664-02-02","date_display":"February 2, 1664 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":1664,"month":2,"day":2,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2328855.770833,"kali_year":4765,"ahargana":1740390.2708,"sun":{"sidereal_longitude":294.721,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":351.0923,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":56.3714,"elapsed_within_tithi_degrees":8.3714},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":351.0923,"elapsed_within_degrees":4.4256},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.8133},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1664,"month":2,"day":2,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2328855.770833,"ahargana":1740390.2708,"kali_year":4765,"ayanamsa_lahiri":19.1606,"grahas":{"sun":{"sidereal_longitude":293.886941,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":347.659041,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":-3.1994},"mars":{"sidereal_longitude":134.24814100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":305.174941,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":262.04154100000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":251.77384099999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":250.420341,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":125.7481,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.7481,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1664,"month":2,"day":2,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2328855.770833,"kali_year":4765,"ahargana":1740390.2708,"sun":{"sidereal_longitude":294.721,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":351.0923,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":56.3714,"elapsed_within_tithi_degrees":8.3714},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":351.0923,"elapsed_within_degrees":4.4256},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.8133},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.199,"elongation":56.371},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.199,"opposition_distance":123.629}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1721,"vikram_samvatsara":"Piṅgala","saka_samvat":1586,"saka_samvatsara":"Krodhi","bengali_samvat":1071,"malayalam_era":840,"nanakshahi_year":195,"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 Pañcamī · Vikram 1721 Piṅgala · Śaka 1586 Krodhi"},"festivals":[{"id":"sarasvati-jayanti","name":"Sarasvatī Jayantī (Vasanta Pañchamī)","name_sanskrit":"सरस्वती जयन्ती / वसन्त पञ्चमी","tradition":"Pan-Hindu","associated_deity":"Sarasvatī (Vāk-tattva)","significance":"Manifestation of Devī Sarasvatī; vidyā-ārambha day; vasanta-ṛtu begins.","vrata":true,"detection":{"tithi_number":5,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Skanda Purāṇa","Devī Bhāgavata"]}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"valid_from":"1664-02-02T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga February 2, 1664 CE · Vidhyamitra","description":"Vedic pañchāṅga for February 2, 1664 CE: Śukla Pañcamī · Revatī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1664-02-02","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1664-02-02","sa":"https://sa.vidhyamitra.com/day/1664-02-02","hi":"https://hi.vidhyamitra.com/day/1664-02-02","x-default":"https://vidhyamitra.com/day/1664-02-02"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-04T19:20:18.131Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-04T19:20:18.131Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}