{"id":"vidhyamitra:city-day:indore:1981-05-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/indore/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":"indore","name":"Indore, Madhya Pradesh","lat":22.7196,"lon":75.8577,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"indore","name":"Indore, Madhya Pradesh","lat":22.7196,"lon":75.8577,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"05:45","sunsetLocal":"19:01","solarNoonLocal":"12:23","dayLengthHours":13.265670983809576,"dayLengthDisplay":"13 Hours 15 Mins 56 Secs","nightLengthDisplay":"10 Hours 44 Mins 04 Secs","moonriseLocal":"18:07","moonsetLocal":"05:15","rahuKala":{"name":"Rāhu Kāla","start":"07:24","end":"09:04","startHours":7.406707011230249,"endHours":9.064915884206446,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:43","end":"12:23","startHours":10.723124757182642,"endHours":12.381333630158839,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:02","end":"15:42","startHours":14.039542503135037,"endHours":15.697751376111233,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:17","startHours":8.84382136780962,"endHours":9.28601040060327,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:39","startHours":6.301234429246117,"endHours":6.654985655481039,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:49","startHours":11.939144597365187,"endHours":12.823522662952493,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:52","startHours":3.9797420070794414,"endHours":4.864120072666746,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:39","end":"05:45","startHours":4.6430255562699205,"endHours":5.748498138254051,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:29","startHours":14.592278794127102,"endHours":15.476656859714407,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:49","end":"19:13","startHours":18.81416912206363,"endHours":19.214169122063627,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:01","end":"19:34","startHours":19.014169122063628,"endHours":19.566905413055693,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:46","end":"20:31","startHours":18.764169122063628,"endHours":20.514169122063628,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:49","startHours":23.93914459736519,"endHours":24.823522662952495,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:45","end":"07:24","startHours":5.748498138254051,"endHours":7.406707011230249,"quality":"auspicious"},{"name":"Kāla","start":"07:24","end":"09:04","startHours":7.406707011230249,"endHours":9.064915884206446,"quality":"inauspicious"},{"name":"Śubha","start":"09:04","end":"10:43","startHours":9.064915884206446,"endHours":10.723124757182642,"quality":"auspicious"},{"name":"Roga","start":"10:43","end":"12:23","startHours":10.723124757182642,"endHours":12.381333630158839,"quality":"inauspicious"},{"name":"Udveg","start":"12:23","end":"14:02","startHours":12.381333630158839,"endHours":14.039542503135037,"quality":"inauspicious"},{"name":"Chala","start":"14:02","end":"15:42","startHours":14.039542503135037,"endHours":15.697751376111233,"quality":"neutral"},{"name":"Labha","start":"15:42","end":"17:21","startHours":15.697751376111233,"endHours":17.35596024908743,"quality":"auspicious"},{"name":"Amṛta","start":"17:21","end":"19:01","startHours":17.35596024908743,"endHours":19.014169122063628,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:01","end":"20:21","startHours":19.014169122063628,"endHours":20.35596024908743,"quality":"neutral"},{"name":"Labha","start":"20:21","end":"21:42","startHours":20.35596024908743,"endHours":21.697751376111235,"quality":"auspicious"},{"name":"Amṛta","start":"21:42","end":"23:02","startHours":21.697751376111235,"endHours":23.03954250313504,"quality":"auspicious"},{"name":"Kāla","start":"23:02","end":"00:23","startHours":23.03954250313504,"endHours":24.38133363015884,"quality":"inauspicious"},{"name":"Śubha","start":"00:23","end":"01:43","startHours":24.38133363015884,"endHours":25.723124757182642,"quality":"auspicious"},{"name":"Roga","start":"01:43","end":"03:04","startHours":25.723124757182642,"endHours":27.064915884206446,"quality":"inauspicious"},{"name":"Udveg","start":"03:04","end":"04:24","startHours":27.064915884206446,"endHours":28.406707011230246,"quality":"inauspicious"},{"name":"Chala","start":"04:24","end":"05:45","startHours":28.406707011230246,"endHours":29.74849813825405,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.748498138254051,"endHours":6.748498138254051,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.748498138254051,"endHours":7.748498138254051,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.748498138254051,"endHours":8.748498138254051,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.748498138254051,"endHours":9.748498138254051,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.748498138254051,"endHours":10.748498138254051,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.748498138254051,"endHours":11.748498138254051,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.748498138254051,"endHours":12.748498138254051,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.748498138254051,"endHours":13.748498138254051,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.748498138254051,"endHours":14.748498138254051,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.748498138254051,"endHours":15.748498138254051,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.748498138254051,"endHours":16.74849813825405,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.74849813825405,"endHours":17.74849813825405,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.74849813825405,"endHours":18.74849813825405,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.74849813825405,"endHours":19.74849813825405,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.74849813825405,"endHours":20.74849813825405,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.74849813825405,"endHours":21.74849813825405,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.74849813825405,"endHours":22.74849813825405,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.74849813825405,"endHours":23.74849813825405,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.74849813825405,"endHours":24.74849813825405,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.74849813825405,"endHours":25.74849813825405,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.74849813825405,"endHours":26.74849813825405,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.74849813825405,"endHours":27.74849813825405,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.74849813825405,"endHours":28.74849813825405,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.74849813825405,"endHours":29.74849813825405,"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"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","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":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Pūrṇimā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"jyeshtha-purnima","name":"Jyeṣṭha Pūrṇimā (Vaṭa Sāvitrī)","name_sanskrit":"ज्येष्ठ पूर्णिमा","tradition":"Pan-Hindu","significance":"Vaṭa Sāvitrī Pūrṇimā in some traditions (others observe Amāvasyā).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Jyeṣṭha"},"precedence":3},{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"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":"-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":"indore"},"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 · Indore, Madhya Pradesh · Vidhyamitra","description":"May 18, 1981 CE for Indore, Madhya Pradesh: Śukla Pūrṇimā, sūryodaya 05:45, sūryāsta 19:01.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/indore/1981-05-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/indore/1981-05-18","sa":"https://sa.vidhyamitra.com/city/indore/1981-05-18","hi":"https://hi.vidhyamitra.com/city/indore/1981-05-18","x-default":"https://vidhyamitra.com/city/indore/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":"2026-05-18T23:36:01.358Z","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":"2026-05-18T23:36:01.358Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T23:36:01.358Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}