{"id":"vidhyamitra:city-day:kolhapur:1981-09-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/1981-09-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-11","date_display":"September 11, 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":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444858.770833,"kali_year":5083,"ahargana":1856393.2708,"sun":{"sidereal_longitude":143.9548,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":285.0536,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":141.0988,"elapsed_within_tithi_degrees":9.0988},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.0536,"elapsed_within_degrees":5.0536},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.0084},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":9,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444858.770833,"ahargana":1856393.2708,"kali_year":5083,"ayanamsa_lahiri":23.5973,"grahas":{"sun":{"sidereal_longitude":144.628673,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":285.51777300000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":-0.4467},"mars":{"sidereal_longitude":102.32287300000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":168.34427299999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":170.420073,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"venus":{"sidereal_longitude":184.42857300000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.892873,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":99.3509,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":279.3509,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444858.770833,"kali_year":5083,"ahargana":1856393.2708,"sun":{"sidereal_longitude":143.9548,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":285.0536,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":141.0988,"elapsed_within_tithi_degrees":9.0988},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":285.0536,"elapsed_within_degrees":5.0536},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.0084},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.447,"elongation":141.099},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.447,"opposition_distance":38.901}},"eclipse_window_40days":[]},"city":{"slug":"kolhapur","name":"Kolhāpur, Maharashtra","lat":16.705,"lon":74.2433,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"kolhapur","name":"Kolhāpur, Maharashtra","lat":16.705,"lon":74.2433,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"06:20","sunsetLocal":"18:38","solarNoonLocal":"12:29","dayLengthHours":12.303104377169547,"dayLengthDisplay":"12 Hours 18 Mins 11 Secs","nightLengthDisplay":"11 Hours 41 Mins 49 Secs","moonriseLocal":"16:12","moonsetLocal":"03:33","rahuKala":{"name":"Rāhu Kāla","start":"10:57","end":"12:29","startHours":10.945652083614426,"endHours":12.48354013076062,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:34","end":"17:06","startHours":15.559316225053006,"endHours":17.0972042721992,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:52","end":"09:24","startHours":7.86987598932204,"endHours":9.407764036468233,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:37","startHours":9.202712296848741,"endHours":9.612815776087725,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:10","startHours":6.844617291224577,"endHours":7.172700074615765,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:54","startHours":12.073436651521634,"endHours":12.893643609999605,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:41","end":"05:31","startHours":4.691574025219907,"endHours":5.511780983697877,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:18","end":"06:20","startHours":5.306729244078384,"endHours":6.3319879421758465,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:21","startHours":14.534057526955545,"endHours":15.354264485433514,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:26","end":"18:50","startHours":18.435092319345394,"endHours":18.835092319345392,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:38","end":"19:09","startHours":18.635092319345393,"endHours":19.147721668394123,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:23","end":"20:08","startHours":18.385092319345393,"endHours":20.135092319345393,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:54","startHours":24.073436651521636,"endHours":24.893643609999604,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:20","end":"07:52","startHours":6.3319879421758465,"endHours":7.86987598932204,"quality":"neutral"},{"name":"Labha","start":"07:52","end":"09:24","startHours":7.86987598932204,"endHours":9.407764036468233,"quality":"auspicious"},{"name":"Amṛta","start":"09:24","end":"10:57","startHours":9.407764036468233,"endHours":10.945652083614426,"quality":"auspicious"},{"name":"Kāla","start":"10:57","end":"12:29","startHours":10.945652083614426,"endHours":12.48354013076062,"quality":"inauspicious"},{"name":"Śubha","start":"12:29","end":"14:01","startHours":12.48354013076062,"endHours":14.021428177906813,"quality":"auspicious"},{"name":"Roga","start":"14:01","end":"15:34","startHours":14.021428177906813,"endHours":15.559316225053006,"quality":"inauspicious"},{"name":"Udveg","start":"15:34","end":"17:06","startHours":15.559316225053006,"endHours":17.0972042721992,"quality":"inauspicious"},{"name":"Chala","start":"17:06","end":"18:38","startHours":17.0972042721992,"endHours":18.635092319345393,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:38","end":"20:06","startHours":18.635092319345393,"endHours":20.0972042721992,"quality":"inauspicious"},{"name":"Udveg","start":"20:06","end":"21:34","startHours":20.0972042721992,"endHours":21.559316225053006,"quality":"inauspicious"},{"name":"Chala","start":"21:34","end":"23:01","startHours":21.559316225053006,"endHours":23.021428177906813,"quality":"neutral"},{"name":"Labha","start":"23:01","end":"00:29","startHours":23.021428177906813,"endHours":24.48354013076062,"quality":"auspicious"},{"name":"Amṛta","start":"00:29","end":"01:57","startHours":24.48354013076062,"endHours":25.945652083614426,"quality":"auspicious"},{"name":"Kāla","start":"01:57","end":"03:24","startHours":25.945652083614426,"endHours":27.407764036468233,"quality":"inauspicious"},{"name":"Śubha","start":"03:24","end":"04:52","startHours":27.407764036468233,"endHours":28.86987598932204,"quality":"auspicious"},{"name":"Roga","start":"04:52","end":"06:20","startHours":28.86987598932204,"endHours":30.331987942175846,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:20","end":"07:20","startHours":6.3319879421758465,"endHours":7.3319879421758465,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:20","end":"08:20","startHours":7.3319879421758465,"endHours":8.331987942175846,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:20","end":"09:20","startHours":8.331987942175846,"endHours":9.331987942175846,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:20","end":"10:20","startHours":9.331987942175846,"endHours":10.331987942175846,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:20","end":"11:20","startHours":10.331987942175846,"endHours":11.331987942175846,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:20","end":"12:20","startHours":11.331987942175846,"endHours":12.331987942175846,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:20","end":"13:20","startHours":12.331987942175846,"endHours":13.331987942175846,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:20","end":"14:20","startHours":13.331987942175846,"endHours":14.331987942175846,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:20","end":"15:20","startHours":14.331987942175846,"endHours":15.331987942175846,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:20","end":"16:20","startHours":15.331987942175846,"endHours":16.331987942175846,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:20","end":"17:20","startHours":16.331987942175846,"endHours":17.331987942175846,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:20","end":"18:20","startHours":17.331987942175846,"endHours":18.331987942175846,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:20","end":"19:20","startHours":18.331987942175846,"endHours":19.331987942175846,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:20","end":"20:20","startHours":19.331987942175846,"endHours":20.331987942175846,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:20","end":"21:20","startHours":20.331987942175846,"endHours":21.331987942175846,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:20","end":"22:20","startHours":21.331987942175846,"endHours":22.331987942175846,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:20","end":"23:20","startHours":22.331987942175846,"endHours":23.331987942175846,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:20","end":"00:20","startHours":23.331987942175846,"endHours":24.331987942175846,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:20","end":"01:20","startHours":24.331987942175846,"endHours":25.331987942175846,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:20","end":"02:20","startHours":25.331987942175846,"endHours":26.331987942175846,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:20","end":"03:20","startHours":26.331987942175846,"endHours":27.331987942175846,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:20","end":"04:20","startHours":27.331987942175846,"endHours":28.331987942175846,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:20","end":"05:20","startHours":28.331987942175846,"endHours":29.331987942175846,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:20","end":"06:20","startHours":29.331987942175846,"endHours":30.331987942175846,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":4.655143466727775,"eotMinutes":4.014392154362758,"ayanamsa":23.5973}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Dvādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"vamana-jayanti","name":"Vāmana Jayantī","name_sanskrit":"वामन जयन्ती","tradition":"Vaishnava","associated_deity":"Vāmana (5th daśāvatāra of Krishna)","deity_avatara_index":15,"significance":"Vāmana's three-step measure of all worlds; Bali's surrender. (= Onam in Kerala.)","vrata":true,"detection":{"tithi_number":12,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":2,"sources":["Bhāgavata 8.18-22"]},{"id":"onam","name":"Onam (Vāmana / King Bali)","name_sanskrit":"ओणम् (वामन-बलि स्मरण)","tradition":"Regional","associated_deity":"Vāmana + King Bali","significance":"Kerala festival; King Bali's annual return to Kerala. Aligned with Thiru-Onam (Śravaṇa nakshatra in Bhādrapada).","vrata":false,"detection":{"nakshatra_name":"Śravaṇa","lunar_month":"Bhādrapada"},"precedence":2},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"kolhapur"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga September 11, 1981 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"September 11, 1981 CE for Kolhāpur, Maharashtra: Śukla Dvādaśī, sūryodaya 06:20, sūryāsta 18:38.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/1981-09-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/1981-09-11","sa":"https://sa.vidhyamitra.com/city/kolhapur/1981-09-11","hi":"https://hi.vidhyamitra.com/city/kolhapur/1981-09-11","x-default":"https://vidhyamitra.com/city/kolhapur/1981-09-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T23:47:17.412Z","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":"2026-05-18T23:47:17.412Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T23:47:17.412Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}