{"id":"vidhyamitra:city-day:ayodhya:-3101-02-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/-3101-02-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3101-02-21","date_display":"February 21, 3102 BCE","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":-3101,"month":2,"day":21,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":588468.770833,"kali_year":1,"ahargana":3.2708,"sun":{"sidereal_longitude":5.4716,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":48.5644,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.0927,"elapsed_within_tithi_degrees":7.0927},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":48.5644,"elapsed_within_degrees":8.5644},"yoga":{"number":5,"name":"Śobhana","sum_longitude":54.036},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":-3101,"month":2,"day":21,"hour":6,"minute":30,"calendar":"julian"},"julian_day":588468.770833,"ahargana":3.2708,"kali_year":1,"ayanamsa_lahiri":-47.4027,"grahas":{"sun":{"sidereal_longitude":5.4716,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":48.5644,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false,"latitude":-3.3811},"mars":{"sidereal_longitude":7.9089,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":3.9853,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":2.2625,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":5.1457,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":353.1924,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":179.8267,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":359.8267,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":-3101,"month":2,"day":21,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":588468.770833,"kali_year":1,"ahargana":3.2708,"sun":{"sidereal_longitude":5.4716,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":48.5644,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.0927,"elapsed_within_tithi_degrees":7.0927},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":48.5644,"elapsed_within_degrees":8.5644},"yoga":{"number":5,"name":"Śobhana","sum_longitude":54.036},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.381,"elongation":43.093},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.381,"opposition_distance":136.907}},"eclipse_window_40days":[{"offset_days":12,"type":"lunar","occurs":true,"moon_latitude":1.238,"opposition_distance":1.931}]},"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":"06:43","sunsetLocal":"17:47","solarNoonLocal":"12:15","dayLengthHours":11.06287140136444,"dayLengthDisplay":"11 Hours 03 Mins 46 Secs","nightLengthDisplay":"12 Hours 56 Mins 14 Secs","moonriseLocal":"09:04","moonsetLocal":"21:11","rahuKala":{"name":"Rāhu Kāla","start":"08:06","end":"09:29","startHours":8.107653930175607,"endHours":9.49051285534616,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:52","end":"12:15","startHours":10.873371780516717,"endHours":12.256230705687273,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:01","startHours":13.639089630857827,"endHours":15.02194855602838,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:18","end":"09:40","startHours":9.30613166532342,"endHours":9.674894045368902,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:29","startHours":7.185747980061904,"endHours":7.4807578840982885,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:37","startHours":11.887468325641791,"endHours":12.624993085732754,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:15","end":"05:59","startHours":5.249745484823126,"endHours":5.9872702449140895,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:48","end":"06:43","startHours":5.802889054891349,"endHours":6.724795005005052,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:50","startHours":14.100042605914679,"endHours":14.837567366005642,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:35","end":"17:59","startHours":17.587666406369493,"endHours":17.98766640636949,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:47","end":"18:15","startHours":17.787666406369492,"endHours":18.248619381426344,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:32","end":"19:17","startHours":17.537666406369492,"endHours":19.287666406369492,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:37","startHours":23.88746832564179,"endHours":24.624993085732754,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:43","end":"08:06","startHours":6.724795005005052,"endHours":8.107653930175607,"quality":"auspicious"},{"name":"Kāla","start":"08:06","end":"09:29","startHours":8.107653930175607,"endHours":9.49051285534616,"quality":"inauspicious"},{"name":"Śubha","start":"09:29","end":"10:52","startHours":9.49051285534616,"endHours":10.873371780516717,"quality":"auspicious"},{"name":"Roga","start":"10:52","end":"12:15","startHours":10.873371780516717,"endHours":12.256230705687273,"quality":"inauspicious"},{"name":"Udveg","start":"12:15","end":"13:38","startHours":12.256230705687273,"endHours":13.639089630857827,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:01","startHours":13.639089630857827,"endHours":15.02194855602838,"quality":"neutral"},{"name":"Labha","start":"15:01","end":"16:24","startHours":15.02194855602838,"endHours":16.404807481198937,"quality":"auspicious"},{"name":"Amṛta","start":"16:24","end":"17:47","startHours":16.404807481198937,"endHours":17.787666406369492,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:47","end":"19:24","startHours":17.787666406369492,"endHours":19.404807481198937,"quality":"neutral"},{"name":"Labha","start":"19:24","end":"21:01","startHours":19.404807481198937,"endHours":21.021948556028384,"quality":"auspicious"},{"name":"Amṛta","start":"21:01","end":"22:38","startHours":21.021948556028384,"endHours":22.63908963085783,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:15","startHours":22.63908963085783,"endHours":24.256230705687273,"quality":"inauspicious"},{"name":"Śubha","start":"00:15","end":"01:52","startHours":24.256230705687273,"endHours":25.873371780516717,"quality":"auspicious"},{"name":"Roga","start":"01:52","end":"03:29","startHours":25.873371780516717,"endHours":27.49051285534616,"quality":"inauspicious"},{"name":"Udveg","start":"03:29","end":"05:06","startHours":27.49051285534616,"endHours":29.10765393017561,"quality":"inauspicious"},{"name":"Chala","start":"05:06","end":"06:43","startHours":29.10765393017561,"endHours":30.724795005005053,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:43","end":"07:43","startHours":6.724795005005052,"endHours":7.724795005005052,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:43","end":"08:43","startHours":7.724795005005052,"endHours":8.724795005005053,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:43","end":"09:43","startHours":8.724795005005053,"endHours":9.724795005005053,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:43","end":"10:43","startHours":9.724795005005053,"endHours":10.724795005005053,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:43","end":"11:43","startHours":10.724795005005053,"endHours":11.724795005005053,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:43","end":"12:43","startHours":11.724795005005053,"endHours":12.724795005005053,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:43","end":"13:43","startHours":12.724795005005053,"endHours":13.724795005005053,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:43","end":"14:43","startHours":13.724795005005053,"endHours":14.724795005005053,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:43","end":"15:43","startHours":14.724795005005053,"endHours":15.724795005005053,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:43","end":"16:43","startHours":15.724795005005053,"endHours":16.724795005005053,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:43","end":"17:43","startHours":16.724795005005053,"endHours":17.724795005005053,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:43","end":"18:43","startHours":17.724795005005053,"endHours":18.724795005005053,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:43","end":"19:43","startHours":18.724795005005053,"endHours":19.724795005005053,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:43","end":"20:43","startHours":19.724795005005053,"endHours":20.724795005005053,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:43","end":"21:43","startHours":20.724795005005053,"endHours":21.724795005005053,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:43","end":"22:43","startHours":21.724795005005053,"endHours":22.724795005005053,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:43","end":"23:43","startHours":22.724795005005053,"endHours":23.724795005005053,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:43","end":"00:43","startHours":23.724795005005053,"endHours":24.724795005005053,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:43","end":"01:43","startHours":24.724795005005053,"endHours":25.724795005005053,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:43","end":"02:43","startHours":25.724795005005053,"endHours":26.724795005005053,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:43","end":"03:43","startHours":26.724795005005053,"endHours":27.724795005005053,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:43","end":"04:43","startHours":27.724795005005053,"endHours":28.724795005005053,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:43","end":"05:43","startHours":28.724795005005053,"endHours":29.724795005005053,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:43","end":"06:43","startHours":29.724795005005053,"endHours":30.724795005005053,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"drikRitu":"undefined (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-15.413266135210309,"eotMinutes":-14.189842341236304,"ayanamsa":-47.4027}},"calendars":{"vikram_samvat":-3044,"saka_samvat":-3179,"bengali_samvat":-3694,"malayalam_era":-3925,"nanakshahi_year":-4570,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Caturthī · Vikram -3044 undefined · Śaka -3179 undefined"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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":true,"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 21, 3102 BCE · Ayodhyā · Vidhyamitra","description":"February 21, 3102 BCE for Ayodhyā: Śukla Caturthī, sūryodaya 06:43, sūryāsta 17:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/-3101-02-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/-3101-02-21","sa":"https://sa.vidhyamitra.com/city/ayodhya/-3101-02-21","hi":"https://hi.vidhyamitra.com/city/ayodhya/-3101-02-21","x-default":"https://vidhyamitra.com/city/ayodhya/-3101-02-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T23:45:32.732Z","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":"2026-05-14T23:45:32.732Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T23:45:32.732Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}