{"id":"vidhyamitra:city-day:ayodhya:2166-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2166-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2166-02-01","date_display":"February 1, 2166 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":2166,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2512206.770833,"kali_year":5267,"ahargana":1923741.2708,"sun":{"sidereal_longitude":285.6392,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":287.2995,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":1.6603,"elapsed_within_tithi_degrees":1.6603},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":287.2995,"elapsed_within_degrees":7.2995},"yoga":{"number":16,"name":"Siddhi","sum_longitude":212.9387},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":2166,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2512206.770833,"ahargana":1923741.2708,"kali_year":5267,"ayanamsa_lahiri":26.1731,"grahas":{"sun":{"sidereal_longitude":286.02628500000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":289.42918499999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false,"latitude":1.8022},"mars":{"sidereal_longitude":61.794084999999995,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":292.083085,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":359.931785,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":236.87778500000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":256.414085,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":130.9298,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":310.9298,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":2166,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2512206.770833,"kali_year":5267,"ahargana":1923741.2708,"sun":{"sidereal_longitude":285.6392,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":287.2995,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":1.6603,"elapsed_within_tithi_degrees":1.6603},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":287.2995,"elapsed_within_degrees":7.2995},"yoga":{"number":16,"name":"Siddhi","sum_longitude":212.9387},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.802,"elongation":1.66},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.802,"opposition_distance":178.34}},"eclipse_window_40days":[{"offset_days":14,"type":"lunar","occurs":true,"moon_latitude":-0.683,"opposition_distance":1.528}]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:47","sunsetLocal":"17:43","solarNoonLocal":"12:15","dayLengthHours":10.93698881107374,"dayLengthDisplay":"10 Hours 56 Mins 13 Secs","nightLengthDisplay":"13 Hours 03 Mins 47 Secs","moonriseLocal":"06:59","moonsetLocal":"17:58","rahuKala":{"name":"Rāhu Kāla","start":"09:31","end":"10:53","startHours":9.513641932521493,"endHours":10.88076553390571,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:37","end":"14:59","startHours":13.615012736674146,"endHours":14.982136338058362,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:47","end":"08:09","startHours":6.779394729753058,"endHours":8.146518331137276,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:20","end":"09:42","startHours":9.331358785670265,"endHours":9.69592507937272,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:14","end":"07:32","startHours":7.235102596881131,"endHours":7.526755631843097,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:37","startHours":11.88332284158747,"endHours":12.612455428992385,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:19","end":"06:03","startHours":5.3211295549432265,"endHours":6.050262142348142,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:52","end":"06:47","startHours":5.867978995496913,"endHours":6.779394729753058,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:48","startHours":14.070720603802217,"endHours":14.799853191207132,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:31","end":"17:55","startHours":17.516383540826798,"endHours":17.916383540826796,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:43","end":"18:10","startHours":17.716383540826797,"endHours":18.17209140795487,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:28","end":"19:13","startHours":17.466383540826797,"endHours":19.216383540826797,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:37","startHours":23.883322841587468,"endHours":24.612455428992387,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:47","end":"08:09","startHours":6.779394729753058,"endHours":8.146518331137276,"quality":"inauspicious"},{"name":"Śubha","start":"08:09","end":"09:31","startHours":8.146518331137276,"endHours":9.513641932521493,"quality":"auspicious"},{"name":"Roga","start":"09:31","end":"10:53","startHours":9.513641932521493,"endHours":10.88076553390571,"quality":"inauspicious"},{"name":"Udveg","start":"10:53","end":"12:15","startHours":10.88076553390571,"endHours":12.247889135289928,"quality":"inauspicious"},{"name":"Chala","start":"12:15","end":"13:37","startHours":12.247889135289928,"endHours":13.615012736674146,"quality":"neutral"},{"name":"Labha","start":"13:37","end":"14:59","startHours":13.615012736674146,"endHours":14.982136338058362,"quality":"auspicious"},{"name":"Amṛta","start":"14:59","end":"16:21","startHours":14.982136338058362,"endHours":16.34925993944258,"quality":"auspicious"},{"name":"Kāla","start":"16:21","end":"17:43","startHours":16.34925993944258,"endHours":17.716383540826797,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:43","end":"19:21","startHours":17.716383540826797,"endHours":19.34925993944258,"quality":"auspicious"},{"name":"Amṛta","start":"19:21","end":"20:59","startHours":19.34925993944258,"endHours":20.98213633805836,"quality":"auspicious"},{"name":"Kāla","start":"20:59","end":"22:37","startHours":20.98213633805836,"endHours":22.615012736674146,"quality":"inauspicious"},{"name":"Śubha","start":"22:37","end":"00:15","startHours":22.615012736674146,"endHours":24.247889135289928,"quality":"auspicious"},{"name":"Roga","start":"00:15","end":"01:53","startHours":24.247889135289928,"endHours":25.88076553390571,"quality":"inauspicious"},{"name":"Udveg","start":"01:53","end":"03:31","startHours":25.88076553390571,"endHours":27.513641932521494,"quality":"inauspicious"},{"name":"Chala","start":"03:31","end":"05:09","startHours":27.513641932521494,"endHours":29.146518331137276,"quality":"neutral"},{"name":"Labha","start":"05:09","end":"06:47","startHours":29.146518331137276,"endHours":30.779394729753058,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:47","end":"07:47","startHours":6.779394729753058,"endHours":7.779394729753058,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:47","end":"08:47","startHours":7.779394729753058,"endHours":8.779394729753058,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:47","end":"09:47","startHours":8.779394729753058,"endHours":9.779394729753058,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:47","end":"10:47","startHours":9.779394729753058,"endHours":10.779394729753058,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:47","end":"11:47","startHours":10.779394729753058,"endHours":11.779394729753058,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:47","end":"12:47","startHours":11.779394729753058,"endHours":12.779394729753058,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:47","end":"13:47","startHours":12.779394729753058,"endHours":13.779394729753058,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:47","end":"14:47","startHours":13.779394729753058,"endHours":14.779394729753058,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:47","end":"15:47","startHours":14.779394729753058,"endHours":15.779394729753058,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:47","end":"16:47","startHours":15.779394729753058,"endHours":16.779394729753058,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:47","end":"17:47","startHours":16.779394729753058,"endHours":17.779394729753058,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:47","end":"18:47","startHours":17.779394729753058,"endHours":18.779394729753058,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:47","end":"19:47","startHours":18.779394729753058,"endHours":19.779394729753058,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:47","end":"20:47","startHours":19.779394729753058,"endHours":20.779394729753058,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:47","end":"21:47","startHours":20.779394729753058,"endHours":21.779394729753058,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:47","end":"22:47","startHours":21.779394729753058,"endHours":22.779394729753058,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:47","end":"23:47","startHours":22.779394729753058,"endHours":23.779394729753058,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:47","end":"00:47","startHours":23.779394729753058,"endHours":24.779394729753058,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:47","end":"01:47","startHours":24.779394729753058,"endHours":25.779394729753058,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:47","end":"02:47","startHours":25.779394729753058,"endHours":26.779394729753058,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:47","end":"03:47","startHours":26.779394729753058,"endHours":27.779394729753058,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:47","end":"04:47","startHours":27.779394729753058,"endHours":28.779394729753058,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:47","end":"05:47","startHours":28.779394729753058,"endHours":29.779394729753058,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:47","end":"06:47","startHours":29.779394729753058,"endHours":30.779394729753058,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-17.136245428796425,"eotMinutes":-13.689348117395623,"ayanamsa":26.1731}},"calendars":{"vikram_samvat":2223,"vikram_samvatsara":"Pramāthi","saka_samvat":2088,"saka_samvatsara":"Akṣaya","bengali_samvat":1573,"malayalam_era":1342,"nanakshahi_year":697,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pratipada · Vikram 2223 Pramāthi · Śaka 2088 Akṣaya"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"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,"location_specific":"ayodhya"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 1, 2166 CE · Ayodhyā · Vidhyamitra","description":"February 1, 2166 CE for Ayodhyā: Śukla Pratipada, sūryodaya 06:47, sūryāsta 17:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2166-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2166-02-01","sa":"https://sa.vidhyamitra.com/city/ayodhya/2166-02-01","hi":"https://hi.vidhyamitra.com/city/ayodhya/2166-02-01","x-default":"https://vidhyamitra.com/city/ayodhya/2166-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T07:57:52.442Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-20T07:57:52.442Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T07:57:52.442Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}