{"id":"vidhyamitra:city-day:kolhapur:2021-09-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/2021-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-09-18","date_display":"September 18, 2021 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":2021,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459475.770833,"kali_year":5123,"ahargana":1871010.2708,"sun":{"sidereal_longitude":150.4183,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":294.8761,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.4578,"elapsed_within_tithi_degrees":0.4578},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.8761,"elapsed_within_degrees":1.5427},"yoga":{"number":7,"name":"Sukarma","sum_longitude":85.2943},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2021,"month":9,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459475.770833,"ahargana":1871010.2708,"kali_year":5123,"ayanamsa_lahiri":24.1563,"grahas":{"sun":{"sidereal_longitude":151.20399700000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":295.03739700000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":-4.2282},"mars":{"sidereal_longitude":157.47259699999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":177.27079700000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":299.61249699999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":193.80959699999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":283.18869700000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":44.8719,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":224.8719,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":2021,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459475.770833,"kali_year":5123,"ahargana":1871010.2708,"sun":{"sidereal_longitude":150.4183,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":294.8761,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.4578,"elapsed_within_tithi_degrees":0.4578},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.8761,"elapsed_within_degrees":1.5427},"yoga":{"number":7,"name":"Sukarma","sum_longitude":85.2943},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.228,"elongation":144.458},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.228,"opposition_distance":35.542}},"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":"06:21","sunsetLocal":"18:32","solarNoonLocal":"12:26","dayLengthHours":12.18983489878206,"dayLengthDisplay":"12 Hours 11 Mins 23 Secs","nightLengthDisplay":"11 Hours 48 Mins 37 Secs","moonriseLocal":"16:18","moonsetLocal":"03:46","rahuKala":{"name":"Rāhu Kāla","start":"09:24","end":"10:55","startHours":9.392820905743244,"endHours":10.916550268091001,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:58","end":"15:29","startHours":13.964008992786518,"endHours":15.487738355134274,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:21","end":"07:52","startHours":6.345362181047729,"endHours":7.869091543395487,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:36","startHours":9.189656990763543,"endHours":9.595984820722945,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:11","startHours":6.853271968496982,"endHours":7.178334232464503,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:51","startHours":12.033951800479358,"endHours":12.846607460398161,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:43","end":"05:32","startHours":4.7200508612101215,"endHours":5.532706521128926,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:20","end":"06:21","startHours":5.329542606149225,"endHours":6.345362181047729,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:17","startHours":14.471918780235768,"endHours":15.284574440154572,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.33519707982979,"endHours":18.73519707982979,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:03","startHours":18.53519707982979,"endHours":19.043106867279043,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.28519707982979,"endHours":20.03519707982979,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:51","startHours":24.033951800479358,"endHours":24.84660746039816,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:21","end":"07:52","startHours":6.345362181047729,"endHours":7.869091543395487,"quality":"inauspicious"},{"name":"Śubha","start":"07:52","end":"09:24","startHours":7.869091543395487,"endHours":9.392820905743244,"quality":"auspicious"},{"name":"Roga","start":"09:24","end":"10:55","startHours":9.392820905743244,"endHours":10.916550268091001,"quality":"inauspicious"},{"name":"Udveg","start":"10:55","end":"12:26","startHours":10.916550268091001,"endHours":12.44027963043876,"quality":"inauspicious"},{"name":"Chala","start":"12:26","end":"13:58","startHours":12.44027963043876,"endHours":13.964008992786518,"quality":"neutral"},{"name":"Labha","start":"13:58","end":"15:29","startHours":13.964008992786518,"endHours":15.487738355134274,"quality":"auspicious"},{"name":"Amṛta","start":"15:29","end":"17:01","startHours":15.487738355134274,"endHours":17.01146771748203,"quality":"auspicious"},{"name":"Kāla","start":"17:01","end":"18:32","startHours":17.01146771748203,"endHours":18.53519707982979,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:32","end":"20:01","startHours":18.53519707982979,"endHours":20.01146771748203,"quality":"auspicious"},{"name":"Amṛta","start":"20:01","end":"21:29","startHours":20.01146771748203,"endHours":21.487738355134276,"quality":"auspicious"},{"name":"Kāla","start":"21:29","end":"22:58","startHours":21.487738355134276,"endHours":22.964008992786518,"quality":"inauspicious"},{"name":"Śubha","start":"22:58","end":"00:26","startHours":22.964008992786518,"endHours":24.44027963043876,"quality":"auspicious"},{"name":"Roga","start":"00:26","end":"01:55","startHours":24.44027963043876,"endHours":25.916550268091,"quality":"inauspicious"},{"name":"Udveg","start":"01:55","end":"03:24","startHours":25.916550268091,"endHours":27.392820905743243,"quality":"inauspicious"},{"name":"Chala","start":"03:24","end":"04:52","startHours":27.392820905743243,"endHours":28.869091543395488,"quality":"neutral"},{"name":"Labha","start":"04:52","end":"06:21","startHours":28.869091543395488,"endHours":30.34536218104773,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.345362181047729,"endHours":7.345362181047729,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.345362181047729,"endHours":8.34536218104773,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.34536218104773,"endHours":9.34536218104773,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.34536218104773,"endHours":10.34536218104773,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.34536218104773,"endHours":11.34536218104773,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.34536218104773,"endHours":12.34536218104773,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.34536218104773,"endHours":13.34536218104773,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.34536218104773,"endHours":14.34536218104773,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.34536218104773,"endHours":15.34536218104773,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.34536218104773,"endHours":16.34536218104773,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.34536218104773,"endHours":17.34536218104773,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.34536218104773,"endHours":18.34536218104773,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.34536218104773,"endHours":19.34536218104773,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.34536218104773,"endHours":20.34536218104773,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.34536218104773,"endHours":21.34536218104773,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.34536218104773,"endHours":22.34536218104773,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.34536218104773,"endHours":23.34536218104773,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.34536218104773,"endHours":24.34536218104773,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.34536218104773,"endHours":25.34536218104773,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.34536218104773,"endHours":26.34536218104773,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.34536218104773,"endHours":27.34536218104773,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.34536218104773,"endHours":28.34536218104773,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.34536218104773,"endHours":29.34536218104773,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.34536218104773,"endHours":30.34536218104773,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":1.8436624891715265,"eotMinutes":6.610022173674397,"ayanamsa":24.1563}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Trayodaśī · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 18, 2021 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"September 18, 2021 CE for Kolhāpur, Maharashtra: Śukla Trayodaśī, sūryodaya 06:21, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/2021-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/2021-09-18","sa":"https://sa.vidhyamitra.com/city/kolhapur/2021-09-18","hi":"https://hi.vidhyamitra.com/city/kolhapur/2021-09-18","x-default":"https://vidhyamitra.com/city/kolhapur/2021-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T06:22:18.793Z","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":"2026-05-15T06:22:18.793Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T06:22:18.793Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}