{"id":"vidhyamitra:city-day:solapur:1981-02-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/solapur/1981-02-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-04","date_display":"February 4, 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":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444639.770833,"kali_year":5082,"ahargana":1856174.2708,"sun":{"sidereal_longitude":291.6357,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":279.3526,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.7168,"elapsed_within_tithi_degrees":11.7168},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.3526,"elapsed_within_degrees":12.6859},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.9883},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444639.770833,"ahargana":1856174.2708,"kali_year":5082,"ayanamsa_lahiri":23.5889,"grahas":{"sun":{"sidereal_longitude":291.5529409999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":280.38614099999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false,"latitude":0.9041},"mars":{"sidereal_longitude":304.410941,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":309.8974410000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.688441,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":true},"venus":{"sidereal_longitude":276.428541,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":165.73294099999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.9546,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.9546,"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":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444639.770833,"kali_year":5082,"ahargana":1856174.2708,"sun":{"sidereal_longitude":291.6357,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":279.3526,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.7168,"elapsed_within_tithi_degrees":11.7168},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.3526,"elapsed_within_degrees":12.6859},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.9883},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.904,"elongation":12.283},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.904,"opposition_distance":167.717}},"eclipse_window_40days":[{"offset_days":-15,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":1,"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":"06:58","sunsetLocal":"18:23","solarNoonLocal":"12:40","dayLengthHours":11.40997305832207,"dayLengthDisplay":"11 Hours 24 Mins 36 Secs","nightLengthDisplay":"12 Hours 35 Mins 24 Secs","moonriseLocal":"06:19","moonsetLocal":"17:33","rahuKala":{"name":"Rāhu Kāla","start":"12:40","end":"14:06","startHours":12.674435406133222,"endHours":14.10068203842348,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:24","end":"09:49","startHours":8.395695509262445,"endHours":9.821942141552704,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:15","end":"12:40","startHours":11.248188773842964,"endHours":12.674435406133222,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"10:01","startHours":9.631775923914004,"endHours":10.012108359191405,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:27","end":"07:45","startHours":7.4448644210689405,"endHours":7.749130369290862,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:18","end":"13:03","startHours":12.29410297085582,"endHours":13.054767841410625,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:27","end":"06:13","startHours":5.448119135862578,"endHours":6.208784006417383,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:01","end":"06:58","startHours":6.018617788778681,"endHours":6.969448876972187,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:20","startHours":14.576097582520234,"endHours":15.336762453075039,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:11","end":"18:35","startHours":18.179421935294258,"endHours":18.579421935294256,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:23","end":"18:51","startHours":18.379421935294257,"endHours":18.85483747939101,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:08","end":"19:53","startHours":18.129421935294257,"endHours":19.879421935294257,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:18","end":"01:03","startHours":24.294102970855818,"endHours":25.054767841410623,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:58","end":"08:24","startHours":6.969448876972187,"endHours":8.395695509262445,"quality":"auspicious"},{"name":"Amṛta","start":"08:24","end":"09:49","startHours":8.395695509262445,"endHours":9.821942141552704,"quality":"auspicious"},{"name":"Kāla","start":"09:49","end":"11:15","startHours":9.821942141552704,"endHours":11.248188773842964,"quality":"inauspicious"},{"name":"Śubha","start":"11:15","end":"12:40","startHours":11.248188773842964,"endHours":12.674435406133222,"quality":"auspicious"},{"name":"Roga","start":"12:40","end":"14:06","startHours":12.674435406133222,"endHours":14.10068203842348,"quality":"inauspicious"},{"name":"Udveg","start":"14:06","end":"15:32","startHours":14.10068203842348,"endHours":15.52692867071374,"quality":"inauspicious"},{"name":"Chala","start":"15:32","end":"16:57","startHours":15.52692867071374,"endHours":16.953175303004,"quality":"neutral"},{"name":"Labha","start":"16:57","end":"18:23","startHours":16.953175303004,"endHours":18.379421935294257,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:23","end":"19:57","startHours":18.379421935294257,"endHours":19.953175303004,"quality":"inauspicious"},{"name":"Chala","start":"19:57","end":"21:32","startHours":19.953175303004,"endHours":21.52692867071374,"quality":"neutral"},{"name":"Labha","start":"21:32","end":"23:06","startHours":21.52692867071374,"endHours":23.10068203842348,"quality":"auspicious"},{"name":"Amṛta","start":"23:06","end":"00:40","startHours":23.10068203842348,"endHours":24.67443540613322,"quality":"auspicious"},{"name":"Kāla","start":"00:40","end":"02:15","startHours":24.67443540613322,"endHours":26.248188773842962,"quality":"inauspicious"},{"name":"Śubha","start":"02:15","end":"03:49","startHours":26.248188773842962,"endHours":27.821942141552704,"quality":"auspicious"},{"name":"Roga","start":"03:49","end":"05:24","startHours":27.821942141552704,"endHours":29.395695509262445,"quality":"inauspicious"},{"name":"Udveg","start":"05:24","end":"06:58","startHours":29.395695509262445,"endHours":30.969448876972187,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:58","end":"07:58","startHours":6.969448876972187,"endHours":7.969448876972187,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:58","end":"08:58","startHours":7.969448876972187,"endHours":8.969448876972187,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:58","end":"09:58","startHours":8.969448876972187,"endHours":9.969448876972187,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:58","end":"10:58","startHours":9.969448876972187,"endHours":10.969448876972187,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:58","end":"11:58","startHours":10.969448876972187,"endHours":11.969448876972187,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:58","end":"12:58","startHours":11.969448876972187,"endHours":12.969448876972187,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:58","end":"13:58","startHours":12.969448876972187,"endHours":13.969448876972187,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:58","end":"14:58","startHours":13.969448876972187,"endHours":14.969448876972187,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:58","end":"15:58","startHours":14.969448876972187,"endHours":15.969448876972187,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:58","end":"16:58","startHours":15.969448876972187,"endHours":16.969448876972187,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:58","end":"17:58","startHours":16.969448876972187,"endHours":17.969448876972187,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:58","end":"18:58","startHours":17.969448876972187,"endHours":18.969448876972187,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:58","end":"19:58","startHours":18.969448876972187,"endHours":19.969448876972187,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:58","end":"20:58","startHours":19.969448876972187,"endHours":20.969448876972187,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:58","end":"21:58","startHours":20.969448876972187,"endHours":21.969448876972187,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:58","end":"22:58","startHours":21.969448876972187,"endHours":22.969448876972187,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:58","end":"23:58","startHours":22.969448876972187,"endHours":23.969448876972187,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:58","end":"00:58","startHours":23.969448876972187,"endHours":24.969448876972187,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:58","end":"01:58","startHours":24.969448876972187,"endHours":25.969448876972187,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:58","end":"02:58","startHours":25.969448876972187,"endHours":26.969448876972187,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:58","end":"03:58","startHours":26.969448876972187,"endHours":27.969448876972187,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:58","end":"04:58","startHours":27.969448876972187,"endHours":28.969448876972187,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:58","end":"05:58","startHours":28.969448876972187,"endHours":29.969448876972187,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:58","end":"06:58","startHours":29.969448876972187,"endHours":30.969448876972187,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-16.292569068601445,"eotMinutes":-14.091724367993354,"ayanamsa":23.5889}},"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 Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 February 4, 1981 CE · Solapur, Maharashtra · Vidhyamitra","description":"February 4, 1981 CE for Solapur, Maharashtra: Kṛṣṇa Caturdaśī, sūryodaya 06:58, sūryāsta 18:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/solapur/1981-02-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/solapur/1981-02-04","sa":"https://sa.vidhyamitra.com/city/solapur/1981-02-04","hi":"https://hi.vidhyamitra.com/city/solapur/1981-02-04","x-default":"https://vidhyamitra.com/city/solapur/1981-02-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T01:44:32.631Z","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":"2026-05-31T01:44:32.631Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T01:44:32.631Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}