{"id":"vidhyamitra:city-day:surat:1981-03-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/surat/1981-03-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-03-04","date_display":"March 4, 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":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444667.770833,"kali_year":5082,"ahargana":1856202.2708,"sun":{"sidereal_longitude":319.9972,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":288.425,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.4278,"elapsed_within_tithi_degrees":4.4278},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.425,"elapsed_within_degrees":8.425},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.4223},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444667.770833,"ahargana":1856202.2708,"kali_year":5082,"ayanamsa_lahiri":23.59,"grahas":{"sun":{"sidereal_longitude":319.7919710000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":288.32427099999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false,"latitude":0.0821},"mars":{"sidereal_longitude":326.472671,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":296.700071,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":164.670571,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":311.450371,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":164.35457099999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":109.471,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":289.471,"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":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444667.770833,"kali_year":5082,"ahargana":1856202.2708,"sun":{"sidereal_longitude":319.9972,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":288.425,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.4278,"elapsed_within_tithi_degrees":4.4278},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.425,"elapsed_within_degrees":8.425},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.4223},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.082,"elongation":31.572},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.082,"opposition_distance":148.428}},"eclipse_window_40days":[]},"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"tier2":{"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"sunriseLocal":"06:58","sunsetLocal":"18:45","solarNoonLocal":"12:51","dayLengthHours":11.78112019619535,"dayLengthDisplay":"11 Hours 46 Mins 52 Secs","nightLengthDisplay":"12 Hours 13 Mins 08 Secs","moonriseLocal":"05:10","moonsetLocal":"16:20","rahuKala":{"name":"Rāhu Kāla","start":"12:51","end":"14:19","startHours":12.852035333454243,"endHours":14.32467535797866,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:26","end":"09:54","startHours":8.434115259880986,"endHours":9.906755284405405,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:23","end":"12:51","startHours":11.379395308929823,"endHours":12.852035333454243,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:43","end":"10:06","startHours":9.710403281135482,"endHours":10.103107287675327,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:27","end":"07:46","startHours":7.452355243531374,"endHours":7.766518448763249,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:28","end":"13:15","startHours":12.459331326914397,"endHours":13.244739339994085,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:11","startHours":5.390659209197187,"endHours":6.1760672222768775,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:59","end":"06:58","startHours":5.9797152190069545,"endHours":6.961475235356567,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:49","end":"15:36","startHours":14.815555366153468,"endHours":15.600963379233159,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:33","end":"18:57","startHours":18.542595431551916,"endHours":18.942595431551915,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:45","end":"19:14","startHours":18.742595431551916,"endHours":19.23347543972672,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:30","end":"20:15","startHours":18.492595431551916,"endHours":20.242595431551916,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:28","end":"01:15","startHours":24.459331326914395,"endHours":25.244739339994084,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:58","end":"08:26","startHours":6.961475235356567,"endHours":8.434115259880986,"quality":"auspicious"},{"name":"Amṛta","start":"08:26","end":"09:54","startHours":8.434115259880986,"endHours":9.906755284405405,"quality":"auspicious"},{"name":"Kāla","start":"09:54","end":"11:23","startHours":9.906755284405405,"endHours":11.379395308929823,"quality":"inauspicious"},{"name":"Śubha","start":"11:23","end":"12:51","startHours":11.379395308929823,"endHours":12.852035333454243,"quality":"auspicious"},{"name":"Roga","start":"12:51","end":"14:19","startHours":12.852035333454243,"endHours":14.32467535797866,"quality":"inauspicious"},{"name":"Udveg","start":"14:19","end":"15:48","startHours":14.32467535797866,"endHours":15.79731538250308,"quality":"inauspicious"},{"name":"Chala","start":"15:48","end":"17:16","startHours":15.79731538250308,"endHours":17.2699554070275,"quality":"neutral"},{"name":"Labha","start":"17:16","end":"18:45","startHours":17.2699554070275,"endHours":18.742595431551916,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:45","end":"20:16","startHours":18.742595431551916,"endHours":20.269955407027496,"quality":"inauspicious"},{"name":"Chala","start":"20:16","end":"21:48","startHours":20.269955407027496,"endHours":21.79731538250308,"quality":"neutral"},{"name":"Labha","start":"21:48","end":"23:19","startHours":21.79731538250308,"endHours":23.32467535797866,"quality":"auspicious"},{"name":"Amṛta","start":"23:19","end":"00:51","startHours":23.32467535797866,"endHours":24.85203533345424,"quality":"auspicious"},{"name":"Kāla","start":"00:51","end":"02:23","startHours":24.85203533345424,"endHours":26.379395308929823,"quality":"inauspicious"},{"name":"Śubha","start":"02:23","end":"03:54","startHours":26.379395308929823,"endHours":27.906755284405403,"quality":"auspicious"},{"name":"Roga","start":"03:54","end":"05:26","startHours":27.906755284405403,"endHours":29.434115259880983,"quality":"inauspicious"},{"name":"Udveg","start":"05:26","end":"06:58","startHours":29.434115259880983,"endHours":30.961475235356566,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:58","end":"07:58","startHours":6.961475235356567,"endHours":7.961475235356567,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:58","end":"08:58","startHours":7.961475235356567,"endHours":8.961475235356566,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:58","end":"09:58","startHours":8.961475235356566,"endHours":9.961475235356566,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:58","end":"10:58","startHours":9.961475235356566,"endHours":10.961475235356566,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:58","end":"11:58","startHours":10.961475235356566,"endHours":11.961475235356566,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:58","end":"12:58","startHours":11.961475235356566,"endHours":12.961475235356566,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:58","end":"13:58","startHours":12.961475235356566,"endHours":13.961475235356566,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:58","end":"14:58","startHours":13.961475235356566,"endHours":14.961475235356566,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:58","end":"15:58","startHours":14.961475235356566,"endHours":15.961475235356566,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:58","end":"16:58","startHours":15.961475235356566,"endHours":16.961475235356566,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:58","end":"17:58","startHours":16.961475235356566,"endHours":17.961475235356566,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:58","end":"18:58","startHours":17.961475235356566,"endHours":18.961475235356566,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:58","end":"19:58","startHours":18.961475235356566,"endHours":19.961475235356566,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:58","end":"20:58","startHours":19.961475235356566,"endHours":20.961475235356566,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:58","end":"21:58","startHours":20.961475235356566,"endHours":21.961475235356566,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:58","end":"22:58","startHours":21.961475235356566,"endHours":22.961475235356566,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:58","end":"23:58","startHours":22.961475235356566,"endHours":23.961475235356566,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:58","end":"00:58","startHours":23.961475235356566,"endHours":24.961475235356566,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:58","end":"01:58","startHours":24.961475235356566,"endHours":25.961475235356566,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:58","end":"02:58","startHours":25.961475235356566,"endHours":26.961475235356566,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:58","end":"03:58","startHours":26.961475235356566,"endHours":27.961475235356566,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:58","end":"04:58","startHours":27.961475235356566,"endHours":28.961475235356566,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:58","end":"05:58","startHours":28.961475235356566,"endHours":29.961475235356566,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:58","end":"06:58","startHours":29.961475235356566,"endHours":30.961475235356566,"planetary_lord":"Sun"}],"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":"South-West","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-6.531386227640953,"eotMinutes":-12.446520007254474,"ayanamsa":23.59}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Trayodaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"surat"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga March 4, 1981 CE · Surat, Gujarat · Vidhyamitra","description":"March 4, 1981 CE for Surat, Gujarat: Kṛṣṇa Trayodaśī, sūryodaya 06:58, sūryāsta 18:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/surat/1981-03-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/surat/1981-03-04","sa":"https://sa.vidhyamitra.com/city/surat/1981-03-04","hi":"https://hi.vidhyamitra.com/city/surat/1981-03-04","x-default":"https://vidhyamitra.com/city/surat/1981-03-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:09:14.092Z","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":"2026-06-02T13:09:14.092Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:09:14.092Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}