{"id":"vidhyamitra:city-day:mathura:1981-03-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1981-03-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-03-21","date_display":"March 21, 1981 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":1981,"month":3,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444684.770833,"kali_year":5082,"ahargana":1856219.2708,"sun":{"sidereal_longitude":336.9746,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":163.3401,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":186.3655,"elapsed_within_tithi_degrees":6.3655},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":163.3401,"elapsed_within_degrees":3.3401},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":140.3147},"karana":{"half_tithi_index":31,"name":"Kaulava"},"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":1981,"month":3,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444684.770833,"ahargana":1856219.2708,"kali_year":5082,"ayanamsa_lahiri":23.5906,"grahas":{"sun":{"sidereal_longitude":336.752822,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":161.21342200000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false,"latitude":3.6745},"mars":{"sidereal_longitude":339.731022,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":309.976622,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":162.653822,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":332.63942199999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":163.112622,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":108.5703,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.5703,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"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":1981,"month":3,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444684.770833,"kali_year":5082,"ahargana":1856219.2708,"sun":{"sidereal_longitude":336.9746,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":163.3401,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":186.3655,"elapsed_within_tithi_degrees":6.3655},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":163.3401,"elapsed_within_degrees":3.3401},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":140.3147},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.675,"elongation":173.635},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.675,"opposition_distance":6.365}},"eclipse_window_40days":[]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:23","sunsetLocal":"18:31","solarNoonLocal":"12:27","dayLengthHours":12.134686305306332,"dayLengthDisplay":"12 Hours 08 Mins 05 Secs","nightLengthDisplay":"11 Hours 51 Mins 55 Secs","moonriseLocal":"18:46","moonsetLocal":"06:44","rahuKala":{"name":"Rāhu Kāla","start":"09:25","end":"10:56","startHours":9.418795184035542,"endHours":10.935630972198833,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:58","end":"15:29","startHours":13.969302548525416,"endHours":15.486138336688708,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:23","end":"07:54","startHours":6.38512360770896,"endHours":7.901959395872251,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:37","startHours":9.216550412280437,"endHours":9.621039955790648,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:53","end":"07:13","startHours":6.890735537096724,"endHours":7.214327171904893,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:51","startHours":12.047977216851914,"endHours":12.856956303872336,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:46","end":"05:35","startHours":4.767165433668115,"endHours":5.576144520688538,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:22","end":"06:23","startHours":5.373899748933432,"endHours":6.38512360770896,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:17","startHours":14.474914477913181,"endHours":15.283893564933603,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.31980991301529,"endHours":18.71980991301529,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:02","startHours":18.51980991301529,"endHours":19.025421842403055,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.26980991301529,"endHours":20.01980991301529,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:51","startHours":24.047977216851912,"endHours":24.856956303872337,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:23","end":"07:54","startHours":6.38512360770896,"endHours":7.901959395872251,"quality":"inauspicious"},{"name":"Śubha","start":"07:54","end":"09:25","startHours":7.901959395872251,"endHours":9.418795184035542,"quality":"auspicious"},{"name":"Roga","start":"09:25","end":"10:56","startHours":9.418795184035542,"endHours":10.935630972198833,"quality":"inauspicious"},{"name":"Udveg","start":"10:56","end":"12:27","startHours":10.935630972198833,"endHours":12.452466760362125,"quality":"inauspicious"},{"name":"Chala","start":"12:27","end":"13:58","startHours":12.452466760362125,"endHours":13.969302548525416,"quality":"neutral"},{"name":"Labha","start":"13:58","end":"15:29","startHours":13.969302548525416,"endHours":15.486138336688708,"quality":"auspicious"},{"name":"Amṛta","start":"15:29","end":"17:00","startHours":15.486138336688708,"endHours":17.002974124852,"quality":"auspicious"},{"name":"Kāla","start":"17:00","end":"18:31","startHours":17.002974124852,"endHours":18.51980991301529,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:31","end":"20:00","startHours":18.51980991301529,"endHours":20.002974124852,"quality":"auspicious"},{"name":"Amṛta","start":"20:00","end":"21:29","startHours":20.002974124852,"endHours":21.486138336688708,"quality":"auspicious"},{"name":"Kāla","start":"21:29","end":"22:58","startHours":21.486138336688708,"endHours":22.969302548525416,"quality":"inauspicious"},{"name":"Śubha","start":"22:58","end":"00:27","startHours":22.969302548525416,"endHours":24.452466760362125,"quality":"auspicious"},{"name":"Roga","start":"00:27","end":"01:56","startHours":24.452466760362125,"endHours":25.935630972198833,"quality":"inauspicious"},{"name":"Udveg","start":"01:56","end":"03:25","startHours":25.935630972198833,"endHours":27.41879518403554,"quality":"inauspicious"},{"name":"Chala","start":"03:25","end":"04:54","startHours":27.41879518403554,"endHours":28.90195939587225,"quality":"neutral"},{"name":"Labha","start":"04:54","end":"06:23","startHours":28.90195939587225,"endHours":30.38512360770896,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:23","end":"07:23","startHours":6.38512360770896,"endHours":7.38512360770896,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:23","end":"08:23","startHours":7.38512360770896,"endHours":8.385123607708959,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:23","end":"09:23","startHours":8.385123607708959,"endHours":9.385123607708959,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:23","end":"10:23","startHours":9.385123607708959,"endHours":10.385123607708959,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:23","end":"11:23","startHours":10.385123607708959,"endHours":11.385123607708959,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:23","end":"12:23","startHours":11.385123607708959,"endHours":12.385123607708959,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:23","end":"13:23","startHours":12.385123607708959,"endHours":13.385123607708959,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:23","end":"14:23","startHours":13.385123607708959,"endHours":14.385123607708959,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:23","end":"15:23","startHours":14.385123607708959,"endHours":15.385123607708959,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:23","end":"16:23","startHours":15.385123607708959,"endHours":16.38512360770896,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:23","end":"17:23","startHours":16.38512360770896,"endHours":17.38512360770896,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:23","end":"18:23","startHours":17.38512360770896,"endHours":18.38512360770896,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:23","end":"19:23","startHours":18.38512360770896,"endHours":19.38512360770896,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:23","end":"20:23","startHours":19.38512360770896,"endHours":20.38512360770896,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:23","end":"21:23","startHours":20.38512360770896,"endHours":21.38512360770896,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:23","end":"22:23","startHours":21.38512360770896,"endHours":22.38512360770896,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:23","end":"23:23","startHours":22.38512360770896,"endHours":23.38512360770896,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:23","end":"00:23","startHours":23.38512360770896,"endHours":24.38512360770896,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:23","end":"01:23","startHours":24.38512360770896,"endHours":25.38512360770896,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:23","end":"02:23","startHours":25.38512360770896,"endHours":26.38512360770896,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:23","end":"03:23","startHours":26.38512360770896,"endHours":27.38512360770896,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:23","end":"04:23","startHours":27.38512360770896,"endHours":28.38512360770896,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:23","end":"05:23","startHours":28.38512360770896,"endHours":29.38512360770896,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:23","end":"06:23","startHours":29.38512360770896,"endHours":30.38512360770896,"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":0.1365893887965726,"eotMinutes":-7.842805621727393,"ayanamsa":23.5906}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Pratipada · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga March 21, 1981 CE · Mathurā · Vidhyamitra","description":"March 21, 1981 CE for Mathurā: Kṛṣṇa Pratipada, sūryodaya 06:23, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1981-03-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1981-03-21","sa":"https://sa.vidhyamitra.com/city/mathura/1981-03-21","hi":"https://hi.vidhyamitra.com/city/mathura/1981-03-21","x-default":"https://vidhyamitra.com/city/mathura/1981-03-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:42:41.364Z","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":"2026-05-14T17:42:41.364Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:42:41.364Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}