{"id":"vidhyamitra:city-day:jamnagar:1981-04-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1981-04-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-19","date_display":"April 19, 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":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444713.770833,"kali_year":5083,"ahargana":1856248.2708,"sun":{"sidereal_longitude":5.4712,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":183.3489,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.8777,"elapsed_within_tithi_degrees":9.8777},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":183.3489,"elapsed_within_degrees":10.0155},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.8201},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444713.770833,"ahargana":1856248.2708,"kali_year":5083,"ayanamsa_lahiri":23.5917,"grahas":{"sun":{"sidereal_longitude":5.313813999999979,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":182.17121399999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false,"latitude":4.372},"mars":{"sidereal_longitude":1.9428139999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":356.018114,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":159.13881400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":8.599014000000011,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":160.92041399999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.0337,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.0337,"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":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444713.770833,"kali_year":5083,"ahargana":1856248.2708,"sun":{"sidereal_longitude":5.4712,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":183.3489,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.8777,"elapsed_within_tithi_degrees":9.8777},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":183.3489,"elapsed_within_degrees":10.0155},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.8201},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.372,"elongation":177.878},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.372,"opposition_distance":2.122}},"eclipse_window_40days":[]},"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"sunriseLocal":"06:27","sunsetLocal":"19:11","solarNoonLocal":"12:49","dayLengthHours":12.742659165205588,"dayLengthDisplay":"12 Hours 44 Mins 34 Secs","nightLengthDisplay":"11 Hours 15 Mins 26 Secs","moonriseLocal":"18:51","moonsetLocal":"06:22","rahuKala":{"name":"Rāhu Kāla","start":"17:36","end":"19:11","startHours":17.59564158037562,"endHours":19.18847397602632,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:49","end":"14:25","startHours":12.817144393423526,"endHours":14.409976789074223,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"16:00","end":"17:36","startHours":16.00280918472492,"endHours":17.59564158037562,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:51","startHours":9.419101949368702,"endHours":9.843857254875555,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:59","end":"07:19","startHours":6.976758942704297,"endHours":7.31656318710978,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:24","end":"13:15","startHours":12.392389087916673,"endHours":13.241899698930379,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:45","end":"05:36","startHours":4.746793588793319,"endHours":5.596304199807025,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:23","end":"06:27","startHours":5.383926547053599,"endHours":6.445814810820731,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:56","end":"15:47","startHours":14.94092092095779,"endHours":15.790431531971496,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:59","end":"19:23","startHours":18.98847397602632,"endHours":19.38847397602632,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:11","end":"19:43","startHours":19.18847397602632,"endHours":19.719418107909885,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:56","end":"20:41","startHours":18.93847397602632,"endHours":20.68847397602632,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:24","end":"01:15","startHours":24.392389087916673,"endHours":25.24189969893038,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:27","end":"08:02","startHours":6.445814810820731,"endHours":8.03864720647143,"quality":"inauspicious"},{"name":"Chala","start":"08:02","end":"09:38","startHours":8.03864720647143,"endHours":9.631479602122127,"quality":"neutral"},{"name":"Labha","start":"09:38","end":"11:13","startHours":9.631479602122127,"endHours":11.224311997772826,"quality":"auspicious"},{"name":"Amṛta","start":"11:13","end":"12:49","startHours":11.224311997772826,"endHours":12.817144393423526,"quality":"auspicious"},{"name":"Kāla","start":"12:49","end":"14:25","startHours":12.817144393423526,"endHours":14.409976789074223,"quality":"inauspicious"},{"name":"Śubha","start":"14:25","end":"16:00","startHours":14.409976789074223,"endHours":16.00280918472492,"quality":"auspicious"},{"name":"Roga","start":"16:00","end":"17:36","startHours":16.00280918472492,"endHours":17.59564158037562,"quality":"inauspicious"},{"name":"Udveg","start":"17:36","end":"19:11","startHours":17.59564158037562,"endHours":19.18847397602632,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:11","end":"20:36","startHours":19.18847397602632,"endHours":20.59564158037562,"quality":"auspicious"},{"name":"Roga","start":"20:36","end":"22:00","startHours":20.59564158037562,"endHours":22.002809184724924,"quality":"inauspicious"},{"name":"Udveg","start":"22:00","end":"23:25","startHours":22.002809184724924,"endHours":23.409976789074225,"quality":"inauspicious"},{"name":"Chala","start":"23:25","end":"00:49","startHours":23.409976789074225,"endHours":24.817144393423526,"quality":"neutral"},{"name":"Labha","start":"00:49","end":"02:13","startHours":24.817144393423526,"endHours":26.224311997772826,"quality":"auspicious"},{"name":"Amṛta","start":"02:13","end":"03:38","startHours":26.224311997772826,"endHours":27.631479602122127,"quality":"auspicious"},{"name":"Kāla","start":"03:38","end":"05:02","startHours":27.631479602122127,"endHours":29.03864720647143,"quality":"inauspicious"},{"name":"Śubha","start":"05:02","end":"06:27","startHours":29.03864720647143,"endHours":30.445814810820732,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:27","end":"07:27","startHours":6.445814810820731,"endHours":7.445814810820731,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:27","end":"08:27","startHours":7.445814810820731,"endHours":8.445814810820732,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:27","end":"09:27","startHours":8.445814810820732,"endHours":9.445814810820732,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:27","end":"10:27","startHours":9.445814810820732,"endHours":10.445814810820732,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:27","end":"11:27","startHours":10.445814810820732,"endHours":11.445814810820732,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:27","end":"12:27","startHours":11.445814810820732,"endHours":12.445814810820732,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:27","end":"13:27","startHours":12.445814810820732,"endHours":13.445814810820732,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:27","end":"14:27","startHours":13.445814810820732,"endHours":14.445814810820732,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:27","end":"15:27","startHours":14.445814810820732,"endHours":15.445814810820732,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:27","end":"16:27","startHours":15.445814810820732,"endHours":16.445814810820732,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:27","end":"17:27","startHours":16.445814810820732,"endHours":17.445814810820732,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:27","end":"18:27","startHours":17.445814810820732,"endHours":18.445814810820732,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:27","end":"19:27","startHours":18.445814810820732,"endHours":19.445814810820732,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:27","end":"20:27","startHours":19.445814810820732,"endHours":20.445814810820732,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:27","end":"21:27","startHours":20.445814810820732,"endHours":21.445814810820732,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:27","end":"22:27","startHours":21.445814810820732,"endHours":22.445814810820732,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:27","end":"23:27","startHours":22.445814810820732,"endHours":23.445814810820732,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:27","end":"00:27","startHours":23.445814810820732,"endHours":24.445814810820732,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:27","end":"01:27","startHours":24.445814810820732,"endHours":25.445814810820732,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:27","end":"02:27","startHours":25.445814810820732,"endHours":26.445814810820732,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:27","end":"03:27","startHours":26.445814810820732,"endHours":27.445814810820732,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:27","end":"04:27","startHours":27.445814810820732,"endHours":28.445814810820732,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:27","end":"05:27","startHours":28.445814810820732,"endHours":29.445814810820732,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:27","end":"06:27","startHours":29.445814810820732,"endHours":30.445814810820732,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":11.084155909211757,"eotMinutes":0.740536394588492,"ayanamsa":23.5917}},"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 Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Pūrṇimā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"buddha-purnima","name":"Buddha Pūrṇimā","name_sanskrit":"बुद्ध पूर्णिमा","name_alternates":["Vesak","Vaiśākhī Pūrṇimā","Vesakha"],"tradition":"Pan-Hindu","associated_deity":"Buddha (21st avatāra of Krishna per Bhāgavata 1.3.24)","deity_avatara_index":21,"significance":"Buddha's birth, enlightenment, and mahāparinirvāṇa all on this Vaiśākha Pūrṇimā. Most sacred Buddhist + Vaishnava day.","vrata":true,"primary_observance":"Day-long observance of compassion (karuṇā) and ahiṁsā; Buddha-stuti at sunset","detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":1,"related_chart":"buddha","historical_anchor":{"event":"Bhagavān Buddha's birth at Lumbinī","date_julian":"-0562-04-11","location":"Lumbinī, Nepal"},"sources":["Bhāgavata Purāṇa 1.3.24","Pāli Tipiṭaka","Buddhacarita by Aśvaghoṣa"]},{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"kurma-jayanti","name":"Kūrma Jayantī","name_sanskrit":"कूर्म जयन्ती","tradition":"Vaishnava","associated_deity":"Kūrma (2nd avatāra of Krishna)","deity_avatara_index":11,"significance":"Kūrma supports Mount Mandara during the Sāgara-mathana (churning of the cosmic ocean).","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":4,"sources":["Bhāgavata 8.7-8"]},{"id":"chandika-jayanti","name":"Chaṇḍikā Jayantī","name_sanskrit":"चण्डिका जयन्ती","tradition":"Shakta","associated_deity":"Devī Chaṇḍikā","significance":"Devī's fierce protective form. Often coincides with Buddha Pūrṇimā.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":5},{"id":"chitra-paurnami","name":"Citrā Paurṇamī","name_sanskrit":"चित्रा पौर्णमी","tradition":"Regional","significance":"Tamil regional Vaiśākha Pūrṇimā observance; honors Citragupta.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":6},{"id":"vaishakha-purnima-vrat","name":"Vaiśākha Pūrṇimā Vrat","name_sanskrit":"वैशाख पूर्णिमा व्रत","tradition":"Pan-Hindu","significance":"General Pūrṇimā vrat in Vaiśākha (highly auspicious month).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":7}],"todays_walk":{"walk":{"id":"buddha-purnima-walk","name":"Buddha Pūrṇimā Walk","name_sanskrit":"बुद्ध पूर्णिमा यात्रा","type":"festival","description":"Bhāgavata 1.3.24 (Buddha as 21st avatāra) + BG 12.13 (compassion) + Dhammapada parallels.","step_count":7,"url":"/walk/buddha-purnima-walk"},"reason":"Today is Buddha Pūrṇimā — its dedicated walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"jamnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 19, 1981 CE · Jamnagar, Gujarat · Vidhyamitra","description":"April 19, 1981 CE for Jamnagar, Gujarat: Śukla Pūrṇimā, sūryodaya 06:27, sūryāsta 19:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1981-04-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1981-04-19","sa":"https://sa.vidhyamitra.com/city/jamnagar/1981-04-19","hi":"https://hi.vidhyamitra.com/city/jamnagar/1981-04-19","x-default":"https://vidhyamitra.com/city/jamnagar/1981-04-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T06:17:52.701Z","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":"2026-05-19T06:17:52.701Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T06:17:52.701Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}