{"id":"vidhyamitra:city-day:dwarka:1981-03-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dwarka/1981-03-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-03-31","date_display":"March 31, 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":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444694.770833,"kali_year":5082,"ahargana":1856229.2708,"sun":{"sidereal_longitude":346.8669,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":285.2411,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.3743,"elapsed_within_tithi_degrees":10.3743},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.2411,"elapsed_within_degrees":5.2411},"yoga":{"number":21,"name":"Siddha","sum_longitude":272.108},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444694.770833,"ahargana":1856229.2708,"kali_year":5082,"ayanamsa_lahiri":23.591,"grahas":{"sun":{"sidereal_longitude":346.654739,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":282.834239,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false,"latitude":0.2195},"mars":{"sidereal_longitude":347.455139,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":323.40843900000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":161.37593900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":345.066739,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":162.33123899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":108.0404,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.0404,"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":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444694.770833,"kali_year":5082,"ahargana":1856229.2708,"sun":{"sidereal_longitude":346.8669,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":285.2411,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.3743,"elapsed_within_tithi_degrees":10.3743},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.2411,"elapsed_within_degrees":5.2411},"yoga":{"number":21,"name":"Siddha","sum_longitude":272.108},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.22,"elongation":61.626},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.22,"opposition_distance":118.374}},"eclipse_window_40days":[]},"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"sunriseLocal":"06:49","sunsetLocal":"19:09","solarNoonLocal":"12:59","dayLengthHours":12.341945568961115,"dayLengthDisplay":"12 Hours 20 Mins 31 Secs","nightLengthDisplay":"11 Hours 39 Mins 29 Secs","moonriseLocal":"03:13","moonsetLocal":"14:14","rahuKala":{"name":"Rāhu Kāla","start":"16:04","end":"17:36","startHours":16.065274749175053,"endHours":17.608017945295195,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:54","end":"11:26","startHours":9.894301964694495,"endHours":11.437045160814636,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:59","end":"14:31","startHours":12.979788356934776,"endHours":14.522531553054915,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:41","end":"10:06","startHours":9.688602871878478,"endHours":10.100001057510514,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:19","end":"07:39","startHours":7.323063304494264,"endHours":7.6521818529998935,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:34","end":"13:23","startHours":12.568390171302738,"endHours":13.391186542566814,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:59","startHours":5.1632228299260685,"endHours":5.986019201190143,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:47","end":"06:49","startHours":5.7803201083741245,"endHours":6.808815572454217,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"15:02","end":"15:52","startHours":15.036779285094962,"endHours":15.859575656359036,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.950761141415335,"endHours":19.350761141415333,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:40","startHours":19.150761141415334,"endHours":19.66500887345538,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.900761141415334,"endHours":20.650761141415334,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:34","end":"01:23","startHours":24.568390171302738,"endHours":25.391186542566814,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:49","end":"08:21","startHours":6.808815572454217,"endHours":8.351558768574357,"quality":"inauspicious"},{"name":"Udveg","start":"08:21","end":"09:54","startHours":8.351558768574357,"endHours":9.894301964694495,"quality":"inauspicious"},{"name":"Chala","start":"09:54","end":"11:26","startHours":9.894301964694495,"endHours":11.437045160814636,"quality":"neutral"},{"name":"Labha","start":"11:26","end":"12:59","startHours":11.437045160814636,"endHours":12.979788356934776,"quality":"auspicious"},{"name":"Amṛta","start":"12:59","end":"14:31","startHours":12.979788356934776,"endHours":14.522531553054915,"quality":"auspicious"},{"name":"Kāla","start":"14:31","end":"16:04","startHours":14.522531553054915,"endHours":16.065274749175053,"quality":"inauspicious"},{"name":"Śubha","start":"16:04","end":"17:36","startHours":16.065274749175053,"endHours":17.608017945295195,"quality":"auspicious"},{"name":"Roga","start":"17:36","end":"19:09","startHours":17.608017945295195,"endHours":19.150761141415334,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:09","end":"20:36","startHours":19.150761141415334,"endHours":20.608017945295195,"quality":"inauspicious"},{"name":"Śubha","start":"20:36","end":"22:04","startHours":20.608017945295195,"endHours":22.065274749175053,"quality":"auspicious"},{"name":"Roga","start":"22:04","end":"23:31","startHours":22.065274749175053,"endHours":23.522531553054915,"quality":"inauspicious"},{"name":"Udveg","start":"23:31","end":"00:59","startHours":23.522531553054915,"endHours":24.979788356934776,"quality":"inauspicious"},{"name":"Chala","start":"00:59","end":"02:26","startHours":24.979788356934776,"endHours":26.437045160814638,"quality":"neutral"},{"name":"Labha","start":"02:26","end":"03:54","startHours":26.437045160814638,"endHours":27.8943019646945,"quality":"auspicious"},{"name":"Amṛta","start":"03:54","end":"05:21","startHours":27.8943019646945,"endHours":29.351558768574357,"quality":"auspicious"},{"name":"Kāla","start":"05:21","end":"06:49","startHours":29.351558768574357,"endHours":30.80881557245422,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:49","end":"07:49","startHours":6.808815572454217,"endHours":7.808815572454217,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:49","end":"08:49","startHours":7.808815572454217,"endHours":8.808815572454218,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:49","end":"09:49","startHours":8.808815572454218,"endHours":9.808815572454218,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:49","end":"10:49","startHours":9.808815572454218,"endHours":10.808815572454218,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:49","end":"11:49","startHours":10.808815572454218,"endHours":11.808815572454218,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:49","end":"12:49","startHours":11.808815572454218,"endHours":12.808815572454218,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:49","end":"13:49","startHours":12.808815572454218,"endHours":13.808815572454218,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:49","end":"14:49","startHours":13.808815572454218,"endHours":14.808815572454218,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:49","end":"15:49","startHours":14.808815572454218,"endHours":15.808815572454218,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:49","end":"16:49","startHours":15.808815572454218,"endHours":16.80881557245422,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:49","end":"17:49","startHours":16.80881557245422,"endHours":17.80881557245422,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:49","end":"18:49","startHours":17.80881557245422,"endHours":18.80881557245422,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:49","end":"19:49","startHours":18.80881557245422,"endHours":19.80881557245422,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:49","end":"20:49","startHours":19.80881557245422,"endHours":20.80881557245422,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:49","end":"21:49","startHours":20.80881557245422,"endHours":21.80881557245422,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:49","end":"22:49","startHours":21.80881557245422,"endHours":22.80881557245422,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:49","end":"23:49","startHours":22.80881557245422,"endHours":23.80881557245422,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:49","end":"00:49","startHours":23.80881557245422,"endHours":24.80881557245422,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:49","end":"01:49","startHours":24.80881557245422,"endHours":25.80881557245422,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:49","end":"02:49","startHours":25.80881557245422,"endHours":26.80881557245422,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:49","end":"03:49","startHours":26.80881557245422,"endHours":27.80881557245422,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:49","end":"04:49","startHours":27.80881557245422,"endHours":28.80881557245422,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:49","end":"05:49","startHours":28.80881557245422,"endHours":29.80881557245422,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:49","end":"06:49","startHours":29.80881557245422,"endHours":30.80881557245422,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Kāladaṇḍa","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":4.056768175178632,"eotMinutes":-4.661701416086492,"ayanamsa":23.591}},"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 Daśamī · 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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"dwarka"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga March 31, 1981 CE · Dvārakā · Vidhyamitra","description":"March 31, 1981 CE for Dvārakā: Kṛṣṇa Daśamī, sūryodaya 06:49, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dwarka/1981-03-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dwarka/1981-03-31","sa":"https://sa.vidhyamitra.com/city/dwarka/1981-03-31","hi":"https://hi.vidhyamitra.com/city/dwarka/1981-03-31","x-default":"https://vidhyamitra.com/city/dwarka/1981-03-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T02:22:30.205Z","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":"2026-05-18T02:22:30.205Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T02:22:30.205Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}