{"id":"vidhyamitra:city-day:vellore:1981-04-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vellore/1981-04-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-07","date_display":"April 7, 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":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444701.770833,"kali_year":5082,"ahargana":1856236.2708,"sun":{"sidereal_longitude":353.7497,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":22.3843,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":28.6347,"elapsed_within_tithi_degrees":4.6347},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":22.3843,"elapsed_within_degrees":9.051},"yoga":{"number":2,"name":"Prīti","sum_longitude":16.134},"karana":{"half_tithi_index":4,"name":"Taitila"},"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":4,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444701.770833,"ahargana":1856236.2708,"kali_year":5082,"ayanamsa_lahiri":23.5913,"grahas":{"sun":{"sidereal_longitude":353.552972,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":24.759072000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":-4.4847},"mars":{"sidereal_longitude":352.823272,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":334.36057200000005,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":160.50197200000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":353.748872,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":161.79037199999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.6695,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.6695,"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":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444701.770833,"kali_year":5082,"ahargana":1856236.2708,"sun":{"sidereal_longitude":353.7497,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":22.3843,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":28.6347,"elapsed_within_tithi_degrees":4.6347},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":22.3843,"elapsed_within_degrees":9.051},"yoga":{"number":2,"name":"Prīti","sum_longitude":16.134},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.485,"elongation":28.635},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.485,"opposition_distance":151.365}},"eclipse_window_40days":[]},"city":{"slug":"vellore","name":"Vellore, Tamil Nadu","lat":12.9165,"lon":79.1325,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"vellore","name":"Vellore, Tamil Nadu","lat":12.9165,"lon":79.1325,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:06","sunsetLocal":"18:26","solarNoonLocal":"12:16","dayLengthHours":12.321666353780333,"dayLengthDisplay":"12 Hours 19 Mins 18 Secs","nightLengthDisplay":"11 Hours 40 Mins 42 Secs","moonriseLocal":"08:02","moonsetLocal":"20:40","rahuKala":{"name":"Rāhu Kāla","start":"15:21","end":"16:53","startHours":15.3463834641923,"endHours":16.88659175841484,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:11","end":"10:44","startHours":9.185550287302132,"endHours":10.725758581524675,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:16","end":"13:48","startHours":12.265966875747216,"endHours":13.806175169969757,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:59","end":"09:23","startHours":8.980189181405793,"endHours":9.390911393198472,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:57","startHours":6.618536463597897,"endHours":6.947114233032039,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:41","startHours":11.855244663954538,"endHours":12.676689087539893,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:17","startHours":4.4622448516863376,"endHours":5.283689275271693,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:05","end":"06:06","startHours":5.078328169375355,"endHours":6.105133698857049,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:08","startHours":14.319577934710605,"endHours":15.14102235829596,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.226800052637383,"endHours":18.626800052637382,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:56","startHours":18.426800052637383,"endHours":18.94020281737823,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.176800052637383,"endHours":19.926800052637383,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:41","startHours":23.85524466395454,"endHours":24.676689087539895,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:06","end":"07:39","startHours":6.105133698857049,"endHours":7.64534199307959,"quality":"inauspicious"},{"name":"Udveg","start":"07:39","end":"09:11","startHours":7.64534199307959,"endHours":9.185550287302132,"quality":"inauspicious"},{"name":"Chala","start":"09:11","end":"10:44","startHours":9.185550287302132,"endHours":10.725758581524675,"quality":"neutral"},{"name":"Labha","start":"10:44","end":"12:16","startHours":10.725758581524675,"endHours":12.265966875747216,"quality":"auspicious"},{"name":"Amṛta","start":"12:16","end":"13:48","startHours":12.265966875747216,"endHours":13.806175169969757,"quality":"auspicious"},{"name":"Kāla","start":"13:48","end":"15:21","startHours":13.806175169969757,"endHours":15.3463834641923,"quality":"inauspicious"},{"name":"Śubha","start":"15:21","end":"16:53","startHours":15.3463834641923,"endHours":16.88659175841484,"quality":"auspicious"},{"name":"Roga","start":"16:53","end":"18:26","startHours":16.88659175841484,"endHours":18.426800052637383,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:26","end":"19:53","startHours":18.426800052637383,"endHours":19.88659175841484,"quality":"inauspicious"},{"name":"Śubha","start":"19:53","end":"21:21","startHours":19.88659175841484,"endHours":21.3463834641923,"quality":"auspicious"},{"name":"Roga","start":"21:21","end":"22:48","startHours":21.3463834641923,"endHours":22.806175169969755,"quality":"inauspicious"},{"name":"Udveg","start":"22:48","end":"00:16","startHours":22.806175169969755,"endHours":24.265966875747218,"quality":"inauspicious"},{"name":"Chala","start":"00:16","end":"01:44","startHours":24.265966875747218,"endHours":25.725758581524673,"quality":"neutral"},{"name":"Labha","start":"01:44","end":"03:11","startHours":25.725758581524673,"endHours":27.18555028730213,"quality":"auspicious"},{"name":"Amṛta","start":"03:11","end":"04:39","startHours":27.18555028730213,"endHours":28.64534199307959,"quality":"auspicious"},{"name":"Kāla","start":"04:39","end":"06:06","startHours":28.64534199307959,"endHours":30.10513369885705,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.105133698857049,"endHours":7.105133698857049,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.105133698857049,"endHours":8.105133698857049,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.105133698857049,"endHours":9.105133698857049,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.105133698857049,"endHours":10.105133698857049,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.105133698857049,"endHours":11.105133698857049,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.105133698857049,"endHours":12.105133698857049,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.105133698857049,"endHours":13.105133698857049,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.105133698857049,"endHours":14.105133698857049,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.105133698857049,"endHours":15.105133698857049,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.105133698857049,"endHours":16.10513369885705,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.10513369885705,"endHours":17.10513369885705,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.10513369885705,"endHours":18.10513369885705,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.10513369885705,"endHours":19.10513369885705,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.10513369885705,"endHours":20.10513369885705,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.10513369885705,"endHours":21.10513369885705,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.10513369885705,"endHours":22.10513369885705,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.10513369885705,"endHours":23.10513369885705,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.10513369885705,"endHours":24.10513369885705,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.10513369885705,"endHours":25.10513369885705,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.10513369885705,"endHours":26.10513369885705,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.10513369885705,"endHours":27.10513369885705,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.10513369885705,"endHours":28.10513369885705,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.10513369885705,"endHours":29.10513369885705,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.10513369885705,"endHours":30.10513369885705,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":6.733019800779496,"eotMinutes":-2.4880125448329173,"ayanamsa":23.5913}},"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 Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Tṛtīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"matsya-jayanti","name":"Matsya Jayantī","name_sanskrit":"मत्स्य जयन्ती","tradition":"Vaishnava","associated_deity":"Matsya (1st daśāvatāra of Krishna)","deity_avatara_index":10,"significance":"Matsya saved Vaivasvata Manu and the Vedas during the cosmic deluge.","vrata":false,"detection":{"tithi_number":3,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":4,"sources":["Bhāgavata 8.24","Matsya Purāṇa 1-2"]}],"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":"vellore"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 7, 1981 CE · Vellore, Tamil Nadu · Vidhyamitra","description":"April 7, 1981 CE for Vellore, Tamil Nadu: Śukla Tṛtīyā, sūryodaya 06:06, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vellore/1981-04-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vellore/1981-04-07","sa":"https://sa.vidhyamitra.com/city/vellore/1981-04-07","hi":"https://hi.vidhyamitra.com/city/vellore/1981-04-07","x-default":"https://vidhyamitra.com/city/vellore/1981-04-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T23:08:57.155Z","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":"2026-06-01T23:08:57.155Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T23:08:57.155Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}