{"id":"vidhyamitra:city-day:vellore:1981-05-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vellore/1981-05-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-04","date_display":"May 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":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444728.770833,"kali_year":5083,"ahargana":1856263.2708,"sun":{"sidereal_longitude":19.9951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.7649,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.7698,"elapsed_within_tithi_degrees":9.7698},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7649,"elapsed_within_degrees":4.4316},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":37.76},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1981,"month":5,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444728.770833,"ahargana":1856263.2708,"kali_year":5083,"ayanamsa_lahiri":23.5923,"grahas":{"sun":{"sidereal_longitude":19.907339999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":17.951540000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":-4.4984},"mars":{"sidereal_longitude":13.182439999999986,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":27.562940000000026,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":157.83794,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":27.106240000000014,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":160.01764000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":106.2389,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":286.2389,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444728.770833,"kali_year":5083,"ahargana":1856263.2708,"sun":{"sidereal_longitude":19.9951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.7649,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.7698,"elapsed_within_tithi_degrees":9.7698},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7649,"elapsed_within_degrees":4.4316},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":37.76},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.498,"elongation":2.23},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.498,"opposition_distance":177.77}},"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":"05:52","sunsetLocal":"18:29","solarNoonLocal":"12:10","dayLengthHours":12.617855910712972,"dayLengthDisplay":"12 Hours 37 Mins 04 Secs","nightLengthDisplay":"11 Hours 22 Mins 56 Secs","moonriseLocal":"05:46","moonsetLocal":"18:19","rahuKala":{"name":"Rāhu Kāla","start":"07:26","end":"09:01","startHours":7.4384964065146395,"endHours":9.015728395353761,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:36","end":"12:10","startHours":10.592960384192882,"endHours":12.170192373032004,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:45","end":"15:19","startHours":13.747424361871126,"endHours":15.324656350710246,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:48","end":"09:14","startHours":8.805430796841877,"endHours":9.226025993865644,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:23","end":"06:43","startHours":6.387008413955225,"endHours":6.723484571574237,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:35","startHours":11.749597176008239,"endHours":12.590787570055769,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:11","end":"05:01","startHours":4.178883629580454,"endHours":5.020074023627986,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:49","end":"05:52","startHours":4.8097764251161035,"endHours":5.8612644176755175,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:16","end":"15:07","startHours":14.273168358150832,"endHours":15.114358752198363,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:17","end":"18:41","startHours":18.27912032838849,"endHours":18.67912032838849,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:29","end":"19:00","startHours":18.47912032838849,"endHours":19.004864324668198,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:14","end":"19:59","startHours":18.22912032838849,"endHours":19.97912032838849,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:35","startHours":23.749597176008237,"endHours":24.590787570055767,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:52","end":"07:26","startHours":5.8612644176755175,"endHours":7.4384964065146395,"quality":"auspicious"},{"name":"Kāla","start":"07:26","end":"09:01","startHours":7.4384964065146395,"endHours":9.015728395353761,"quality":"inauspicious"},{"name":"Śubha","start":"09:01","end":"10:36","startHours":9.015728395353761,"endHours":10.592960384192882,"quality":"auspicious"},{"name":"Roga","start":"10:36","end":"12:10","startHours":10.592960384192882,"endHours":12.170192373032004,"quality":"inauspicious"},{"name":"Udveg","start":"12:10","end":"13:45","startHours":12.170192373032004,"endHours":13.747424361871126,"quality":"inauspicious"},{"name":"Chala","start":"13:45","end":"15:19","startHours":13.747424361871126,"endHours":15.324656350710246,"quality":"neutral"},{"name":"Labha","start":"15:19","end":"16:54","startHours":15.324656350710246,"endHours":16.901888339549366,"quality":"auspicious"},{"name":"Amṛta","start":"16:54","end":"18:29","startHours":16.901888339549366,"endHours":18.47912032838849,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:29","end":"19:54","startHours":18.47912032838849,"endHours":19.90188833954937,"quality":"neutral"},{"name":"Labha","start":"19:54","end":"21:19","startHours":19.90188833954937,"endHours":21.324656350710246,"quality":"auspicious"},{"name":"Amṛta","start":"21:19","end":"22:45","startHours":21.324656350710246,"endHours":22.747424361871126,"quality":"auspicious"},{"name":"Kāla","start":"22:45","end":"00:10","startHours":22.747424361871126,"endHours":24.170192373032002,"quality":"inauspicious"},{"name":"Śubha","start":"00:10","end":"01:36","startHours":24.170192373032002,"endHours":25.59296038419288,"quality":"auspicious"},{"name":"Roga","start":"01:36","end":"03:01","startHours":25.59296038419288,"endHours":27.01572839535376,"quality":"inauspicious"},{"name":"Udveg","start":"03:01","end":"04:26","startHours":27.01572839535376,"endHours":28.438496406514638,"quality":"inauspicious"},{"name":"Chala","start":"04:26","end":"05:52","startHours":28.438496406514638,"endHours":29.861264417675518,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:52","end":"06:52","startHours":5.8612644176755175,"endHours":6.8612644176755175,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:52","end":"07:52","startHours":6.8612644176755175,"endHours":7.8612644176755175,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:52","end":"08:52","startHours":7.8612644176755175,"endHours":8.861264417675518,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:52","end":"09:52","startHours":8.861264417675518,"endHours":9.861264417675518,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:52","end":"10:52","startHours":9.861264417675518,"endHours":10.861264417675518,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:52","end":"11:52","startHours":10.861264417675518,"endHours":11.861264417675518,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:52","end":"12:52","startHours":11.861264417675518,"endHours":12.861264417675518,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:52","end":"13:52","startHours":12.861264417675518,"endHours":13.861264417675518,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:52","end":"14:52","startHours":13.861264417675518,"endHours":14.861264417675518,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:52","end":"15:52","startHours":14.861264417675518,"endHours":15.861264417675518,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:52","end":"16:52","startHours":15.861264417675518,"endHours":16.861264417675518,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:52","end":"17:52","startHours":16.861264417675518,"endHours":17.861264417675518,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:52","end":"18:52","startHours":17.861264417675518,"endHours":18.861264417675518,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:52","end":"19:52","startHours":18.861264417675518,"endHours":19.861264417675518,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:52","end":"20:52","startHours":19.861264417675518,"endHours":20.861264417675518,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:52","end":"21:52","startHours":20.861264417675518,"endHours":21.861264417675518,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:52","end":"22:52","startHours":21.861264417675518,"endHours":22.861264417675518,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:52","end":"23:52","startHours":22.861264417675518,"endHours":23.861264417675518,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:52","end":"00:52","startHours":23.861264417675518,"endHours":24.861264417675518,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:52","end":"01:52","startHours":24.861264417675518,"endHours":25.861264417675518,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:52","end":"02:52","startHours":25.861264417675518,"endHours":26.861264417675518,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:52","end":"03:52","startHours":26.861264417675518,"endHours":27.861264417675518,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:52","end":"04:52","startHours":27.861264417675518,"endHours":28.861264417675518,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:52","end":"05:52","startHours":28.861264417675518,"endHours":29.861264417675518,"planetary_lord":"Venus"}],"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":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":15.889272495971255,"eotMinutes":3.258457618079846,"ayanamsa":23.5923}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Amāvasyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"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 May 4, 1981 CE · Vellore, Tamil Nadu · Vidhyamitra","description":"May 4, 1981 CE for Vellore, Tamil Nadu: Kṛṣṇa Amāvasyā, sūryodaya 05:52, sūryāsta 18:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vellore/1981-05-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vellore/1981-05-04","sa":"https://sa.vidhyamitra.com/city/vellore/1981-05-04","hi":"https://hi.vidhyamitra.com/city/vellore/1981-05-04","x-default":"https://vidhyamitra.com/city/vellore/1981-05-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T02:06:56.038Z","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":"2026-06-02T02:06:56.038Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T02:06:56.038Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}