{"id":"vidhyamitra:city-day:kolhapur:2131-09-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/2131-09-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-09-21","date_display":"September 21, 2131 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":2131,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499654.770833,"kali_year":5233,"ahargana":1911189.2708,"sun":{"sidereal_longitude":150.9412,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":147.6429,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":356.7017,"elapsed_within_tithi_degrees":8.7017},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.6429,"elapsed_within_degrees":0.9762},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.5841},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":2131,"month":9,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499654.770833,"ahargana":1911189.2708,"kali_year":5233,"ayanamsa_lahiri":25.693,"grahas":{"sun":{"sidereal_longitude":151.994863,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":147.156563,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":4.2707},"mars":{"sidereal_longitude":19.552962999999977,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":165.20786299999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":62.22086300000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":168.68256299999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":195.793763,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":75.9951,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":255.9951,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"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":2131,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499654.770833,"kali_year":5233,"ahargana":1911189.2708,"sun":{"sidereal_longitude":150.9412,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":147.6429,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":356.7017,"elapsed_within_tithi_degrees":8.7017},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.6429,"elapsed_within_degrees":0.9762},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.5841},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.271,"elongation":3.298},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.271,"opposition_distance":176.702}},"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":"18:30","solarNoonLocal":"12:25","dayLengthHours":12.152774182223512,"dayLengthDisplay":"12 Hours 09 Mins 10 Secs","nightLengthDisplay":"11 Hours 50 Mins 50 Secs","moonriseLocal":"06:00","moonsetLocal":"18:12","rahuKala":{"name":"Rāhu Kāla","start":"10:54","end":"12:25","startHours":10.902807770509785,"endHours":12.421904543287724,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:28","end":"16:59","startHours":15.460098088843601,"endHours":16.97919486162154,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:52","end":"09:23","startHours":7.864614224953906,"endHours":9.383710997731844,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:35","startHours":9.181164761361453,"endHours":9.586257234102238,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:11","startHours":6.851883043101947,"endHours":7.175957021294574,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:50","startHours":12.01681207054694,"endHours":12.826997016028507,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:44","end":"05:32","startHours":4.725147561212832,"endHours":5.5353325066944,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:20","end":"06:21","startHours":5.332786270324007,"endHours":6.345517452175967,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:15","startHours":14.447366906991641,"endHours":15.25755185247321,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.29829163439948,"endHours":18.698291634399478,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:00","startHours":18.49829163439948,"endHours":19.00465722532546,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.24829163439948,"endHours":19.99829163439948,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:50","startHours":24.01681207054694,"endHours":24.826997016028507,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:21","end":"07:52","startHours":6.345517452175967,"endHours":7.864614224953906,"quality":"neutral"},{"name":"Labha","start":"07:52","end":"09:23","startHours":7.864614224953906,"endHours":9.383710997731844,"quality":"auspicious"},{"name":"Amṛta","start":"09:23","end":"10:54","startHours":9.383710997731844,"endHours":10.902807770509785,"quality":"auspicious"},{"name":"Kāla","start":"10:54","end":"12:25","startHours":10.902807770509785,"endHours":12.421904543287724,"quality":"inauspicious"},{"name":"Śubha","start":"12:25","end":"13:56","startHours":12.421904543287724,"endHours":13.941001316065663,"quality":"auspicious"},{"name":"Roga","start":"13:56","end":"15:28","startHours":13.941001316065663,"endHours":15.460098088843601,"quality":"inauspicious"},{"name":"Udveg","start":"15:28","end":"16:59","startHours":15.460098088843601,"endHours":16.97919486162154,"quality":"inauspicious"},{"name":"Chala","start":"16:59","end":"18:30","startHours":16.97919486162154,"endHours":18.49829163439948,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:30","end":"19:59","startHours":18.49829163439948,"endHours":19.97919486162154,"quality":"inauspicious"},{"name":"Udveg","start":"19:59","end":"21:28","startHours":19.97919486162154,"endHours":21.4600980888436,"quality":"inauspicious"},{"name":"Chala","start":"21:28","end":"22:56","startHours":21.4600980888436,"endHours":22.941001316065663,"quality":"neutral"},{"name":"Labha","start":"22:56","end":"00:25","startHours":22.941001316065663,"endHours":24.421904543287724,"quality":"auspicious"},{"name":"Amṛta","start":"00:25","end":"01:54","startHours":24.421904543287724,"endHours":25.902807770509785,"quality":"auspicious"},{"name":"Kāla","start":"01:54","end":"03:23","startHours":25.902807770509785,"endHours":27.383710997731846,"quality":"inauspicious"},{"name":"Śubha","start":"03:23","end":"04:52","startHours":27.383710997731846,"endHours":28.864614224953904,"quality":"auspicious"},{"name":"Roga","start":"04:52","end":"06:21","startHours":28.864614224953904,"endHours":30.34551745217597,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.345517452175967,"endHours":7.345517452175967,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.345517452175967,"endHours":8.345517452175967,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.345517452175967,"endHours":9.345517452175967,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.345517452175967,"endHours":10.345517452175967,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.345517452175967,"endHours":11.345517452175967,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.345517452175967,"endHours":12.345517452175967,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.345517452175967,"endHours":13.345517452175967,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.345517452175967,"endHours":14.345517452175967,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.345517452175967,"endHours":15.345517452175967,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.345517452175967,"endHours":16.34551745217597,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.34551745217597,"endHours":17.34551745217597,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.34551745217597,"endHours":18.34551745217597,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.34551745217597,"endHours":19.34551745217597,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.34551745217597,"endHours":20.34551745217597,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.34551745217597,"endHours":21.34551745217597,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.34551745217597,"endHours":22.34551745217597,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.34551745217597,"endHours":23.34551745217597,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.34551745217597,"endHours":24.34551745217597,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.34551745217597,"endHours":25.34551745217597,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.34551745217597,"endHours":26.34551745217597,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.34551745217597,"endHours":27.34551745217597,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.34551745217597,"endHours":28.34551745217597,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.34551745217597,"endHours":29.34551745217597,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.34551745217597,"endHours":30.34551745217597,"planetary_lord":"Mars"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"South-East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":0.9194018213538181,"eotMinutes":7.712527402736593,"ayanamsa":25.693}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Amāvasyā · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[{"id":"mahalaya-amavasya","name":"Mahālaya Amāvasyā (Sarvapitṛ Amāvasyā)","name_sanskrit":"महालय अमावस्या","tradition":"Pan-Hindu","associated_deity":"Pitṛ-deva","significance":"Final day of Pitṛ-Pakṣa; tarpaṇa for all ancestors.","vrata":true,"detection":{"tithi_number":30,"tithi_paksha":"Kṛṣṇa","lunar_month":"Āśvina"},"precedence":1}],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"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 21, 2131 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"September 21, 2131 CE for Kolhāpur, Maharashtra: Kṛṣṇa Amāvasyā, sūryodaya 06:21, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/2131-09-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/2131-09-21","sa":"https://sa.vidhyamitra.com/city/kolhapur/2131-09-21","hi":"https://hi.vidhyamitra.com/city/kolhapur/2131-09-21","x-default":"https://vidhyamitra.com/city/kolhapur/2131-09-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T12:45:43.549Z","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":"2026-06-02T12:45:43.549Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T12:45:43.549Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}