{"id":"vidhyamitra:city-day:vellore:1981-07-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vellore/1981-07-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-16","date_display":"July 16, 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":7,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444801.770833,"kali_year":5083,"ahargana":1856336.2708,"sun":{"sidereal_longitude":89.4456,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":255.4308,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.9852,"elapsed_within_tithi_degrees":9.9852},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":255.4308,"elapsed_within_degrees":2.0975},"yoga":{"number":26,"name":"Indra","sum_longitude":344.8764},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":7,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444801.770833,"ahargana":1856336.2708,"kali_year":5083,"ayanamsa_lahiri":23.5951,"grahas":{"sun":{"sidereal_longitude":89.83845100000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":256.404951,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false,"latitude":2.0371},"mars":{"sidereal_longitude":65.07205099999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":69.41515099999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":160.486451,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":116.35445099999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":160.49055099999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":102.3711,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.3711,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":7,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444801.770833,"kali_year":5083,"ahargana":1856336.2708,"sun":{"sidereal_longitude":89.4456,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":255.4308,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.9852,"elapsed_within_tithi_degrees":9.9852},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":255.4308,"elapsed_within_degrees":2.0975},"yoga":{"number":26,"name":"Indra","sum_longitude":344.8764},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.037,"elongation":165.985},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.037,"opposition_distance":14.015}},"eclipse_window_40days":[{"offset_days":1,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":15,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:55","sunsetLocal":"18:43","solarNoonLocal":"12:19","dayLengthHours":12.810611768456827,"dayLengthDisplay":"12 Hours 48 Mins 38 Secs","nightLengthDisplay":"11 Hours 11 Mins 22 Secs","moonriseLocal":"17:45","moonsetLocal":"05:06","rahuKala":{"name":"Rāhu Kāla","start":"13:55","end":"15:31","startHours":13.920538814661718,"endHours":15.521865285718825,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:55","end":"07:31","startHours":5.913906459376203,"endHours":7.5152329304333065,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:07","end":"10:43","startHours":9.11655940149041,"endHours":10.717885872547512,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:20","startHours":8.903049205349461,"endHours":9.330069597631356,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:27","end":"06:47","startHours":6.447681949728571,"endHours":6.789298263554086,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:45","startHours":11.892191951322722,"endHours":12.746232735886512,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:12","end":"05:04","startHours":4.205824890248626,"endHours":5.059865674812414,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:55","startHours":4.846355478671468,"endHours":5.913906459376203,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:19","startHours":14.454314305014087,"endHours":15.308355089577875,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:31","end":"18:55","startHours":18.52451822783303,"endHours":18.92451822783303,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:43","end":"19:15","startHours":18.72451822783303,"endHours":19.2582937181854,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:28","end":"20:13","startHours":18.47451822783303,"endHours":20.22451822783303,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:45","startHours":23.892191951322726,"endHours":24.74623273588651,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:55","end":"07:31","startHours":5.913906459376203,"endHours":7.5152329304333065,"quality":"auspicious"},{"name":"Roga","start":"07:31","end":"09:07","startHours":7.5152329304333065,"endHours":9.11655940149041,"quality":"inauspicious"},{"name":"Udveg","start":"09:07","end":"10:43","startHours":9.11655940149041,"endHours":10.717885872547512,"quality":"inauspicious"},{"name":"Chala","start":"10:43","end":"12:19","startHours":10.717885872547512,"endHours":12.319212343604615,"quality":"neutral"},{"name":"Labha","start":"12:19","end":"13:55","startHours":12.319212343604615,"endHours":13.920538814661718,"quality":"auspicious"},{"name":"Amṛta","start":"13:55","end":"15:31","startHours":13.920538814661718,"endHours":15.521865285718825,"quality":"auspicious"},{"name":"Kāla","start":"15:31","end":"17:07","startHours":15.521865285718825,"endHours":17.123191756775928,"quality":"inauspicious"},{"name":"Śubha","start":"17:07","end":"18:43","startHours":17.123191756775928,"endHours":18.72451822783303,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:43","end":"20:07","startHours":18.72451822783303,"endHours":20.123191756775928,"quality":"auspicious"},{"name":"Kāla","start":"20:07","end":"21:31","startHours":20.123191756775928,"endHours":21.521865285718825,"quality":"inauspicious"},{"name":"Śubha","start":"21:31","end":"22:55","startHours":21.521865285718825,"endHours":22.920538814661718,"quality":"auspicious"},{"name":"Roga","start":"22:55","end":"00:19","startHours":22.920538814661718,"endHours":24.31921234360462,"quality":"inauspicious"},{"name":"Udveg","start":"00:19","end":"01:43","startHours":24.31921234360462,"endHours":25.717885872547512,"quality":"inauspicious"},{"name":"Chala","start":"01:43","end":"03:07","startHours":25.717885872547512,"endHours":27.11655940149041,"quality":"neutral"},{"name":"Labha","start":"03:07","end":"04:31","startHours":27.11655940149041,"endHours":28.515232930433307,"quality":"auspicious"},{"name":"Amṛta","start":"04:31","end":"05:55","startHours":28.515232930433307,"endHours":29.913906459376204,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:55","end":"06:55","startHours":5.913906459376203,"endHours":6.913906459376203,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:55","end":"07:55","startHours":6.913906459376203,"endHours":7.913906459376203,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:55","end":"08:55","startHours":7.913906459376203,"endHours":8.913906459376204,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:55","end":"09:55","startHours":8.913906459376204,"endHours":9.913906459376204,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:55","end":"10:55","startHours":9.913906459376204,"endHours":10.913906459376204,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:55","end":"11:55","startHours":10.913906459376204,"endHours":11.913906459376204,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:55","end":"12:55","startHours":11.913906459376204,"endHours":12.913906459376204,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:55","end":"13:55","startHours":12.913906459376204,"endHours":13.913906459376204,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:55","end":"14:55","startHours":13.913906459376204,"endHours":14.913906459376204,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:55","end":"15:55","startHours":14.913906459376204,"endHours":15.913906459376204,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:55","end":"16:55","startHours":15.913906459376204,"endHours":16.913906459376204,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:55","end":"17:55","startHours":16.913906459376204,"endHours":17.913906459376204,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:55","end":"18:55","startHours":17.913906459376204,"endHours":18.913906459376204,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:55","end":"19:55","startHours":18.913906459376204,"endHours":19.913906459376204,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:55","end":"20:55","startHours":19.913906459376204,"endHours":20.913906459376204,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:55","end":"21:55","startHours":20.913906459376204,"endHours":21.913906459376204,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:55","end":"22:55","startHours":21.913906459376204,"endHours":22.913906459376204,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:55","end":"23:55","startHours":22.913906459376204,"endHours":23.913906459376204,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:55","end":"00:55","startHours":23.913906459376204,"endHours":24.913906459376204,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:55","end":"01:55","startHours":24.913906459376204,"endHours":25.913906459376204,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:55","end":"02:55","startHours":25.913906459376204,"endHours":26.913906459376204,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:55","end":"03:55","startHours":26.913906459376204,"endHours":27.913906459376204,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:55","end":"04:55","startHours":27.913906459376204,"endHours":28.913906459376204,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:55","end":"05:55","startHours":28.913906459376204,"endHours":29.913906459376204,"planetary_lord":"Moon"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.4031669549711,"eotMinutes":-5.682740616276977,"ayanamsa":23.5951}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi_ingress":"Karka"},"precedence":2}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 July 16, 1981 CE · Vellore, Tamil Nadu · Vidhyamitra","description":"July 16, 1981 CE for Vellore, Tamil Nadu: Śukla Caturdaśī, sūryodaya 05:55, sūryāsta 18:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vellore/1981-07-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vellore/1981-07-16","sa":"https://sa.vidhyamitra.com/city/vellore/1981-07-16","hi":"https://hi.vidhyamitra.com/city/vellore/1981-07-16","x-default":"https://vidhyamitra.com/city/vellore/1981-07-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T07:19:31.106Z","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":"2026-06-02T07:19:31.106Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T07:19:31.106Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}