{"id":"vidhyamitra:city-day:kolhapur:2017-12-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/2017-12-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-12-21","date_display":"December 21, 2017 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":2017,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458108.770833,"kali_year":5119,"ahargana":1869643.2708,"sun":{"sidereal_longitude":244.873,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":277.769,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":32.896,"elapsed_within_tithi_degrees":8.896},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":277.769,"elapsed_within_degrees":11.1023},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":162.642},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2017,"month":12,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458108.770833,"ahargana":1869643.2708,"kali_year":5119,"ayanamsa_lahiri":24.104,"grahas":{"sun":{"sidereal_longitude":245.24922600000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":275.224026,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false,"latitude":1.5032},"mars":{"sidereal_longitude":192.909626,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":228.88712599999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":200.650626,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":240.39772599999992,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":245.84592599999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":117.3022,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":297.3022,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2017,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458108.770833,"kali_year":5119,"ahargana":1869643.2708,"sun":{"sidereal_longitude":244.873,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":277.769,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":32.896,"elapsed_within_tithi_degrees":8.896},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":277.769,"elapsed_within_degrees":11.1023},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":162.642},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.503,"elongation":32.896},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.503,"opposition_distance":147.104}},"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":"06:58","sunsetLocal":"18:06","solarNoonLocal":"12:32","dayLengthHours":11.130721437667262,"dayLengthDisplay":"11 Hours 07 Mins 51 Secs","nightLengthDisplay":"12 Hours 52 Mins 09 Secs","moonriseLocal":"08:54","moonsetLocal":"20:09","rahuKala":{"name":"Rāhu Kāla","start":"13:55","end":"15:19","startHours":13.918743022926037,"endHours":15.310083202634445,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:58","end":"08:21","startHours":6.962042124383998,"endHours":8.353382304092406,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:45","end":"11:08","startHours":9.744722483800814,"endHours":11.136062663509222,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:56","startHours":9.559210459839692,"endHours":9.930234507761934,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:26","end":"07:43","startHours":7.4258221842868,"endHours":7.722641422624594,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.156378795295387,"endHours":12.898426891139872,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:29","end":"06:13","startHours":5.477945932695029,"endHours":6.219994028539514,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:02","end":"06:58","startHours":6.0344820045783925,"endHours":6.962042124383998,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:07","startHours":14.38252308282884,"endHours":15.124571178673325,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.89276356205126,"endHours":18.29276356205126,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:33","startHours":18.09276356205126,"endHours":18.556543621954063,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.84276356205126,"endHours":19.59276356205126,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.15637879529539,"endHours":24.89842689113987,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:58","end":"08:21","startHours":6.962042124383998,"endHours":8.353382304092406,"quality":"auspicious"},{"name":"Roga","start":"08:21","end":"09:45","startHours":8.353382304092406,"endHours":9.744722483800814,"quality":"inauspicious"},{"name":"Udveg","start":"09:45","end":"11:08","startHours":9.744722483800814,"endHours":11.136062663509222,"quality":"inauspicious"},{"name":"Chala","start":"11:08","end":"12:32","startHours":11.136062663509222,"endHours":12.52740284321763,"quality":"neutral"},{"name":"Labha","start":"12:32","end":"13:55","startHours":12.52740284321763,"endHours":13.918743022926037,"quality":"auspicious"},{"name":"Amṛta","start":"13:55","end":"15:19","startHours":13.918743022926037,"endHours":15.310083202634445,"quality":"auspicious"},{"name":"Kāla","start":"15:19","end":"16:42","startHours":15.310083202634445,"endHours":16.701423382342853,"quality":"inauspicious"},{"name":"Śubha","start":"16:42","end":"18:06","startHours":16.701423382342853,"endHours":18.09276356205126,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:06","end":"19:42","startHours":18.09276356205126,"endHours":19.701423382342853,"quality":"auspicious"},{"name":"Kāla","start":"19:42","end":"21:19","startHours":19.701423382342853,"endHours":21.310083202634445,"quality":"inauspicious"},{"name":"Śubha","start":"21:19","end":"22:55","startHours":21.310083202634445,"endHours":22.918743022926037,"quality":"auspicious"},{"name":"Roga","start":"22:55","end":"00:32","startHours":22.918743022926037,"endHours":24.52740284321763,"quality":"inauspicious"},{"name":"Udveg","start":"00:32","end":"02:08","startHours":24.52740284321763,"endHours":26.13606266350922,"quality":"inauspicious"},{"name":"Chala","start":"02:08","end":"03:45","startHours":26.13606266350922,"endHours":27.744722483800814,"quality":"neutral"},{"name":"Labha","start":"03:45","end":"05:21","startHours":27.744722483800814,"endHours":29.353382304092406,"quality":"auspicious"},{"name":"Amṛta","start":"05:21","end":"06:58","startHours":29.353382304092406,"endHours":30.962042124384,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:58","end":"07:58","startHours":6.962042124383998,"endHours":7.962042124383998,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:58","end":"08:58","startHours":7.962042124383998,"endHours":8.962042124383998,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:58","end":"09:58","startHours":8.962042124383998,"endHours":9.962042124383998,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:58","end":"10:58","startHours":9.962042124383998,"endHours":10.962042124383998,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:58","end":"11:58","startHours":10.962042124383998,"endHours":11.962042124383998,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:58","end":"12:58","startHours":11.962042124383998,"endHours":12.962042124383998,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:58","end":"13:58","startHours":12.962042124383998,"endHours":13.962042124383998,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:58","end":"14:58","startHours":13.962042124383998,"endHours":14.962042124383998,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:58","end":"15:58","startHours":14.962042124383998,"endHours":15.962042124383998,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:58","end":"16:58","startHours":15.962042124383998,"endHours":16.962042124384,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:58","end":"17:58","startHours":16.962042124384,"endHours":17.962042124384,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:58","end":"18:58","startHours":17.962042124384,"endHours":18.962042124384,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:58","end":"19:58","startHours":18.962042124384,"endHours":19.962042124384,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:58","end":"20:58","startHours":19.962042124384,"endHours":20.962042124384,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:58","end":"21:58","startHours":20.962042124384,"endHours":21.962042124384,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:58","end":"22:58","startHours":21.962042124384,"endHours":22.962042124384,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:58","end":"23:58","startHours":22.962042124384,"endHours":23.962042124384,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:58","end":"00:58","startHours":23.962042124384,"endHours":24.962042124384,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:58","end":"01:58","startHours":24.962042124384,"endHours":25.962042124384,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:58","end":"02:58","startHours":25.962042124384,"endHours":26.962042124384,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:58","end":"03:58","startHours":26.962042124384,"endHours":27.962042124384,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:58","end":"04:58","startHours":27.962042124384,"endHours":28.962042124384,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:58","end":"05:58","startHours":28.962042124384,"endHours":29.962042124384,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:58","end":"06:58","startHours":29.962042124384,"endHours":30.962042124384,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.434917551625315,"eotMinutes":1.382629406942221,"ayanamsa":24.104}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Tṛtīyā · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 December 21, 2017 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"December 21, 2017 CE for Kolhāpur, Maharashtra: Śukla Tṛtīyā, sūryodaya 06:58, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/2017-12-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/2017-12-21","sa":"https://sa.vidhyamitra.com/city/kolhapur/2017-12-21","hi":"https://hi.vidhyamitra.com/city/kolhapur/2017-12-21","x-default":"https://vidhyamitra.com/city/kolhapur/2017-12-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T06:35:19.411Z","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":"2026-05-17T06:35:19.411Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T06:35:19.411Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}