{"id":"vidhyamitra:city-day:solapur:1981-01-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/solapur/1981-01-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-20","date_display":"January 20, 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":1,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444624.770833,"kali_year":5082,"ahargana":1856159.2708,"sun":{"sidereal_longitude":276.2875,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":94.5111,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":178.2236,"elapsed_within_tithi_degrees":10.2236},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":94.5111,"elapsed_within_degrees":1.1778},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.7986},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444624.770833,"ahargana":1856159.2708,"kali_year":5082,"ayanamsa_lahiri":23.5883,"grahas":{"sun":{"sidereal_longitude":276.31211400000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":92.79781400000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":-1.3323},"mars":{"sidereal_longitude":292.558314,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":289.142914,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":166.81431399999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":257.644314,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":165.962314,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":111.7494,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":291.7494,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"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":1,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444624.770833,"kali_year":5082,"ahargana":1856159.2708,"sun":{"sidereal_longitude":276.2875,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":94.5111,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":178.2236,"elapsed_within_tithi_degrees":10.2236},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":94.5111,"elapsed_within_degrees":1.1778},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.7986},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.332,"elongation":178.224},"lunar":{"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}},"eclipse_window_40days":[{"offset_days":0,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":16,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"city":{"slug":"solapur","name":"Solapur, Maharashtra","lat":17.6599,"lon":75.9064,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"solapur","name":"Solapur, Maharashtra","lat":17.6599,"lon":75.9064,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"07:00","sunsetLocal":"18:14","solarNoonLocal":"12:37","dayLengthHours":11.229491702074833,"dayLengthDisplay":"11 Hours 13 Mins 46 Secs","nightLengthDisplay":"12 Hours 46 Mins 14 Secs","moonriseLocal":"17:53","moonsetLocal":"06:54","rahuKala":{"name":"Rāhu Kāla","start":"15:26","end":"16:50","startHours":15.429684647805862,"endHours":16.833371110565217,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:49","end":"11:13","startHours":9.814938796768445,"endHours":11.2186252595278,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:37","end":"14:02","startHours":12.622311722287154,"endHours":14.025998185046507,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"10:00","startHours":9.627780601733864,"endHours":10.002096991803025,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:46","startHours":7.4754613588361885,"endHours":7.774914470891518,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:15","end":"13:00","startHours":12.247995332217993,"endHours":12.996628112356316,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:31","end":"06:16","startHours":5.510300310973093,"endHours":6.258933091111414,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:04","end":"07:00","startHours":6.071774896076834,"endHours":7.007565871249737,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:15","startHours":14.493893672632959,"endHours":15.242526452771282,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:02","end":"18:26","startHours":18.03705757332457,"endHours":18.43705757332457,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:14","end":"18:42","startHours":18.23705757332457,"endHours":18.70495306091102,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:59","end":"19:44","startHours":17.98705757332457,"endHours":19.73705757332457,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:15","end":"01:00","startHours":24.247995332217993,"endHours":24.996628112356316,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:00","end":"08:25","startHours":7.007565871249737,"endHours":8.411252334009092,"quality":"inauspicious"},{"name":"Udveg","start":"08:25","end":"09:49","startHours":8.411252334009092,"endHours":9.814938796768445,"quality":"inauspicious"},{"name":"Chala","start":"09:49","end":"11:13","startHours":9.814938796768445,"endHours":11.2186252595278,"quality":"neutral"},{"name":"Labha","start":"11:13","end":"12:37","startHours":11.2186252595278,"endHours":12.622311722287154,"quality":"auspicious"},{"name":"Amṛta","start":"12:37","end":"14:02","startHours":12.622311722287154,"endHours":14.025998185046507,"quality":"auspicious"},{"name":"Kāla","start":"14:02","end":"15:26","startHours":14.025998185046507,"endHours":15.429684647805862,"quality":"inauspicious"},{"name":"Śubha","start":"15:26","end":"16:50","startHours":15.429684647805862,"endHours":16.833371110565217,"quality":"auspicious"},{"name":"Roga","start":"16:50","end":"18:14","startHours":16.833371110565217,"endHours":18.23705757332457,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:14","end":"19:50","startHours":18.23705757332457,"endHours":19.833371110565217,"quality":"inauspicious"},{"name":"Śubha","start":"19:50","end":"21:26","startHours":19.833371110565217,"endHours":21.42968464780586,"quality":"auspicious"},{"name":"Roga","start":"21:26","end":"23:02","startHours":21.42968464780586,"endHours":23.025998185046507,"quality":"inauspicious"},{"name":"Udveg","start":"23:02","end":"00:37","startHours":23.025998185046507,"endHours":24.622311722287154,"quality":"inauspicious"},{"name":"Chala","start":"00:37","end":"02:13","startHours":24.622311722287154,"endHours":26.218625259527798,"quality":"neutral"},{"name":"Labha","start":"02:13","end":"03:49","startHours":26.218625259527798,"endHours":27.814938796768445,"quality":"auspicious"},{"name":"Amṛta","start":"03:49","end":"05:25","startHours":27.814938796768445,"endHours":29.41125233400909,"quality":"auspicious"},{"name":"Kāla","start":"05:25","end":"07:00","startHours":29.41125233400909,"endHours":31.00756587124974,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:00","end":"08:00","startHours":7.007565871249737,"endHours":8.007565871249737,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:00","end":"09:00","startHours":8.007565871249737,"endHours":9.007565871249737,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:00","end":"10:00","startHours":9.007565871249737,"endHours":10.007565871249737,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:00","end":"11:00","startHours":10.007565871249737,"endHours":11.007565871249737,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:00","end":"12:00","startHours":11.007565871249737,"endHours":12.007565871249737,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:00","end":"13:00","startHours":12.007565871249737,"endHours":13.007565871249737,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:00","end":"14:00","startHours":13.007565871249737,"endHours":14.007565871249737,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:00","end":"15:00","startHours":14.007565871249737,"endHours":15.007565871249737,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:00","end":"16:00","startHours":15.007565871249737,"endHours":16.00756587124974,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:00","end":"17:00","startHours":16.00756587124974,"endHours":17.00756587124974,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:00","end":"18:00","startHours":17.00756587124974,"endHours":18.00756587124974,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:00","end":"19:00","startHours":18.00756587124974,"endHours":19.00756587124974,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:00","end":"20:00","startHours":19.00756587124974,"endHours":20.00756587124974,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:00","end":"21:00","startHours":20.00756587124974,"endHours":21.00756587124974,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:00","end":"22:00","startHours":21.00756587124974,"endHours":22.00756587124974,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:00","end":"23:00","startHours":22.00756587124974,"endHours":23.00756587124974,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:00","end":"00:00","startHours":23.00756587124974,"endHours":24.00756587124974,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:00","end":"01:00","startHours":24.00756587124974,"endHours":25.00756587124974,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:00","end":"02:00","startHours":25.00756587124974,"endHours":26.00756587124974,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:00","end":"03:00","startHours":26.00756587124974,"endHours":27.00756587124974,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:00","end":"04:00","startHours":27.00756587124974,"endHours":28.00756587124974,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:00","end":"05:00","startHours":28.00756587124974,"endHours":29.00756587124974,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:00","end":"06:00","startHours":29.00756587124974,"endHours":30.00756587124974,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:00","end":"07:00","startHours":30.00756587124974,"endHours":31.00756587124974,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.1690714175147,"eotMinutes":-10.9643033372293,"ayanamsa":23.5883}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pūrṇimā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"magha-purnima","name":"Māghī Pūrṇimā","name_sanskrit":"माघी पूर्णिमा","tradition":"Pan-Hindu","significance":"Sacred snāna at Prayāga; Māgha-snāna culmination.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's 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":"solapur"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 20, 1981 CE · Solapur, Maharashtra · Vidhyamitra","description":"January 20, 1981 CE for Solapur, Maharashtra: Śukla Pūrṇimā, sūryodaya 07:00, sūryāsta 18:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/solapur/1981-01-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/solapur/1981-01-20","sa":"https://sa.vidhyamitra.com/city/solapur/1981-01-20","hi":"https://hi.vidhyamitra.com/city/solapur/1981-01-20","x-default":"https://vidhyamitra.com/city/solapur/1981-01-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T12:08:25.431Z","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":"2026-05-19T12:08:25.431Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T12:08:25.431Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}