{"id":"vidhyamitra:city-day:omkareshwar:1981-05-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/omkareshwar/1981-05-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-18","date_display":"May 18, 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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444742.770833,"kali_year":5083,"ahargana":1856277.2708,"sun":{"sidereal_longitude":33.439,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":203.0301,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.5911,"elapsed_within_tithi_degrees":1.5911},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":203.0301,"elapsed_within_degrees":3.0301},"yoga":{"number":18,"name":"Varīyān","sum_longitude":236.4692},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444742.770833,"ahargana":1856277.2708,"kali_year":5083,"ayanamsa_lahiri":23.5928,"grahas":{"sun":{"sidereal_longitude":33.431906000000026,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":202.992206,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false,"latitude":4.4611},"mars":{"sidereal_longitude":23.501105999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":53.91680600000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":157.16290600000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":44.329206,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":159.44000600000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":105.4972,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":285.4972,"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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444742.770833,"kali_year":5083,"ahargana":1856277.2708,"sun":{"sidereal_longitude":33.439,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":203.0301,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":169.5911,"elapsed_within_tithi_degrees":1.5911},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":203.0301,"elapsed_within_degrees":3.0301},"yoga":{"number":18,"name":"Varīyān","sum_longitude":236.4692},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.461,"elongation":169.591},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.461,"opposition_distance":10.409}},"eclipse_window_40days":[]},"city":{"slug":"omkareshwar","name":"Oṁkāreśvar","lat":22.2429,"lon":76.1497,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"omkareshwar","name":"Oṁkāreśvar","lat":22.2429,"lon":76.1497,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"05:45","sunsetLocal":"18:59","solarNoonLocal":"12:22","dayLengthHours":13.238518554104576,"dayLengthDisplay":"13 Hours 14 Mins 19 Secs","nightLengthDisplay":"10 Hours 45 Mins 41 Secs","moonriseLocal":"18:06","moonsetLocal":"05:14","rahuKala":{"name":"Rāhu Kāla","start":"07:24","end":"09:03","startHours":7.3974225057029575,"endHours":9.052237324966029,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:42","end":"12:22","startHours":10.707052144229102,"endHours":12.361866963492172,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:01","end":"15:40","startHours":14.016681782755246,"endHours":15.671496602018319,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:50","end":"09:16","startHours":8.831595349064287,"endHours":9.272879300867771,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:39","startHours":6.294212626194242,"endHours":6.647239787637031,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:48","startHours":11.920583011688688,"endHours":12.80315091529566,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:52","startHours":3.9774718792259414,"endHours":4.860039782832914,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:38","end":"05:45","startHours":4.63939780693117,"endHours":5.742607686439885,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:34","end":"15:27","startHours":14.568286722509605,"endHours":15.450854626116577,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:47","end":"19:11","startHours":18.781126240544463,"endHours":19.18112624054446,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:59","end":"19:32","startHours":18.981126240544462,"endHours":19.53273118029882,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:44","end":"20:29","startHours":18.731126240544462,"endHours":20.481126240544462,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:48","startHours":23.92058301168869,"endHours":24.80315091529566,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:45","end":"07:24","startHours":5.742607686439885,"endHours":7.3974225057029575,"quality":"auspicious"},{"name":"Kāla","start":"07:24","end":"09:03","startHours":7.3974225057029575,"endHours":9.052237324966029,"quality":"inauspicious"},{"name":"Śubha","start":"09:03","end":"10:42","startHours":9.052237324966029,"endHours":10.707052144229102,"quality":"auspicious"},{"name":"Roga","start":"10:42","end":"12:22","startHours":10.707052144229102,"endHours":12.361866963492172,"quality":"inauspicious"},{"name":"Udveg","start":"12:22","end":"14:01","startHours":12.361866963492172,"endHours":14.016681782755246,"quality":"inauspicious"},{"name":"Chala","start":"14:01","end":"15:40","startHours":14.016681782755246,"endHours":15.671496602018319,"quality":"neutral"},{"name":"Labha","start":"15:40","end":"17:20","startHours":15.671496602018319,"endHours":17.32631142128139,"quality":"auspicious"},{"name":"Amṛta","start":"17:20","end":"18:59","startHours":17.32631142128139,"endHours":18.981126240544462,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:59","end":"20:20","startHours":18.981126240544462,"endHours":20.32631142128139,"quality":"neutral"},{"name":"Labha","start":"20:20","end":"21:40","startHours":20.32631142128139,"endHours":21.67149660201832,"quality":"auspicious"},{"name":"Amṛta","start":"21:40","end":"23:01","startHours":21.67149660201832,"endHours":23.016681782755246,"quality":"auspicious"},{"name":"Kāla","start":"23:01","end":"00:22","startHours":23.016681782755246,"endHours":24.361866963492176,"quality":"inauspicious"},{"name":"Śubha","start":"00:22","end":"01:42","startHours":24.361866963492176,"endHours":25.707052144229102,"quality":"auspicious"},{"name":"Roga","start":"01:42","end":"03:03","startHours":25.707052144229102,"endHours":27.05223732496603,"quality":"inauspicious"},{"name":"Udveg","start":"03:03","end":"04:24","startHours":27.05223732496603,"endHours":28.397422505702956,"quality":"inauspicious"},{"name":"Chala","start":"04:24","end":"05:45","startHours":28.397422505702956,"endHours":29.742607686439886,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.742607686439885,"endHours":6.742607686439885,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.742607686439885,"endHours":7.742607686439885,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.742607686439885,"endHours":8.742607686439886,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.742607686439886,"endHours":9.742607686439886,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.742607686439886,"endHours":10.742607686439886,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.742607686439886,"endHours":11.742607686439886,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.742607686439886,"endHours":12.742607686439886,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.742607686439886,"endHours":13.742607686439886,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.742607686439886,"endHours":14.742607686439886,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.742607686439886,"endHours":15.742607686439886,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.742607686439886,"endHours":16.742607686439886,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.742607686439886,"endHours":17.742607686439886,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.742607686439886,"endHours":18.742607686439886,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.742607686439886,"endHours":19.742607686439886,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.742607686439886,"endHours":20.742607686439886,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.742607686439886,"endHours":21.742607686439886,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.742607686439886,"endHours":22.742607686439886,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.742607686439886,"endHours":23.742607686439886,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.742607686439886,"endHours":24.742607686439886,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.742607686439886,"endHours":25.742607686439886,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.742607686439886,"endHours":26.742607686439886,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.742607686439886,"endHours":27.742607686439886,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.742607686439886,"endHours":28.742607686439886,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.742607686439886,"endHours":29.742607686439886,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"East (Pūrva)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.49106684363513,"eotMinutes":3.6891821904695723,"ayanamsa":23.5928}},"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","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","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":"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā + Viśākhā","url":"/day/-0562-04-11","relevance":1},{"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}]},"validity":{"eternal":false,"location_specific":"omkareshwar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 18, 1981 CE · Oṁkāreśvar · Vidhyamitra","description":"May 18, 1981 CE for Oṁkāreśvar: Śukla Pūrṇimā, sūryodaya 05:45, sūryāsta 18:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/omkareshwar/1981-05-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/omkareshwar/1981-05-18","sa":"https://sa.vidhyamitra.com/city/omkareshwar/1981-05-18","hi":"https://hi.vidhyamitra.com/city/omkareshwar/1981-05-18","x-default":"https://vidhyamitra.com/city/omkareshwar/1981-05-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:38:39.314Z","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":"2026-05-31T02:38:39.314Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:38:39.314Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}