{"id":"vidhyamitra:city-day:kolhapur:1973-09-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/1973-09-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-09-13","date_display":"September 13, 1973 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":1973,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441938.770833,"kali_year":5075,"ahargana":1853473.2708,"sun":{"sidereal_longitude":145.9639,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":330.2749,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":184.311,"elapsed_within_tithi_degrees":4.311},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":330.2749,"elapsed_within_degrees":10.2749},"yoga":{"number":9,"name":"Śūla","sum_longitude":116.2388},"karana":{"half_tithi_index":30,"name":"Bālava"},"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":1973,"month":9,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441938.770833,"ahargana":1853473.2708,"kali_year":5075,"ayanamsa_lahiri":23.4856,"grahas":{"sun":{"sidereal_longitude":146.62343900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":331.457939,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false,"latitude":4.37},"mars":{"sidereal_longitude":15.766438999999991,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":155.71453900000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":279.51483899999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":186.50223900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":70.44293900000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":254.0666,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":74.0666,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"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":1973,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441938.770833,"kali_year":5075,"ahargana":1853473.2708,"sun":{"sidereal_longitude":145.9639,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":330.2749,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":184.311,"elapsed_within_tithi_degrees":4.311},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":330.2749,"elapsed_within_degrees":10.2749},"yoga":{"number":9,"name":"Śūla","sum_longitude":116.2388},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.37,"elongation":175.689},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.37,"opposition_distance":4.311}},"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":"18:36","solarNoonLocal":"12:28","dayLengthHours":12.27328810427384,"dayLengthDisplay":"12 Hours 16 Mins 24 Secs","nightLengthDisplay":"11 Hours 43 Mins 36 Secs","moonriseLocal":"18:48","moonsetLocal":"06:48","rahuKala":{"name":"Rāhu Kāla","start":"14:00","end":"15:32","startHours":14.005376497536464,"endHours":15.539537510570694,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:20","end":"07:52","startHours":6.334571432365314,"endHours":7.8687324453995435,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:24","end":"10:56","startHours":9.402893458433773,"endHours":10.937054471468004,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:36","startHours":9.198338656695876,"endHours":9.60744826017167,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:10","startHours":6.845958436710057,"endHours":7.173246119490693,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:53","startHours":12.062105881026438,"endHours":12.880325087978028,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:42","end":"05:31","startHours":4.698133018462135,"endHours":5.5163522254137245,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:19","end":"06:20","startHours":5.311797423675827,"endHours":6.334571432365314,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:20","startHours":14.516763501881208,"endHours":15.334982708832797,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:24","end":"18:48","startHours":18.407859536639155,"endHours":18.807859536639153,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:36","end":"19:07","startHours":18.607859536639154,"endHours":19.119246540983898,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:21","end":"20:06","startHours":18.357859536639154,"endHours":20.107859536639154,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:53","startHours":24.062105881026437,"endHours":24.880325087978026,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:20","end":"07:52","startHours":6.334571432365314,"endHours":7.8687324453995435,"quality":"auspicious"},{"name":"Roga","start":"07:52","end":"09:24","startHours":7.8687324453995435,"endHours":9.402893458433773,"quality":"inauspicious"},{"name":"Udveg","start":"09:24","end":"10:56","startHours":9.402893458433773,"endHours":10.937054471468004,"quality":"inauspicious"},{"name":"Chala","start":"10:56","end":"12:28","startHours":10.937054471468004,"endHours":12.471215484502235,"quality":"neutral"},{"name":"Labha","start":"12:28","end":"14:00","startHours":12.471215484502235,"endHours":14.005376497536464,"quality":"auspicious"},{"name":"Amṛta","start":"14:00","end":"15:32","startHours":14.005376497536464,"endHours":15.539537510570694,"quality":"auspicious"},{"name":"Kāla","start":"15:32","end":"17:04","startHours":15.539537510570694,"endHours":17.073698523604925,"quality":"inauspicious"},{"name":"Śubha","start":"17:04","end":"18:36","startHours":17.073698523604925,"endHours":18.607859536639154,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:36","end":"20:04","startHours":18.607859536639154,"endHours":20.073698523604925,"quality":"auspicious"},{"name":"Kāla","start":"20:04","end":"21:32","startHours":20.073698523604925,"endHours":21.539537510570693,"quality":"inauspicious"},{"name":"Śubha","start":"21:32","end":"23:00","startHours":21.539537510570693,"endHours":23.005376497536464,"quality":"auspicious"},{"name":"Roga","start":"23:00","end":"00:28","startHours":23.005376497536464,"endHours":24.471215484502235,"quality":"inauspicious"},{"name":"Udveg","start":"00:28","end":"01:56","startHours":24.471215484502235,"endHours":25.937054471468002,"quality":"inauspicious"},{"name":"Chala","start":"01:56","end":"03:24","startHours":25.937054471468002,"endHours":27.402893458433773,"quality":"neutral"},{"name":"Labha","start":"03:24","end":"04:52","startHours":27.402893458433773,"endHours":28.868732445399544,"quality":"auspicious"},{"name":"Amṛta","start":"04:52","end":"06:20","startHours":28.868732445399544,"endHours":30.334571432365316,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:20","end":"07:20","startHours":6.334571432365314,"endHours":7.334571432365314,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:20","end":"08:20","startHours":7.334571432365314,"endHours":8.334571432365314,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:20","end":"09:20","startHours":8.334571432365314,"endHours":9.334571432365314,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:20","end":"10:20","startHours":9.334571432365314,"endHours":10.334571432365314,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:20","end":"11:20","startHours":10.334571432365314,"endHours":11.334571432365314,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:20","end":"12:20","startHours":11.334571432365314,"endHours":12.334571432365314,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:20","end":"13:20","startHours":12.334571432365314,"endHours":13.334571432365314,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:20","end":"14:20","startHours":13.334571432365314,"endHours":14.334571432365314,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:20","end":"15:20","startHours":14.334571432365314,"endHours":15.334571432365314,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:20","end":"16:20","startHours":15.334571432365314,"endHours":16.334571432365316,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:20","end":"17:20","startHours":16.334571432365316,"endHours":17.334571432365316,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:20","end":"18:20","startHours":17.334571432365316,"endHours":18.334571432365316,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:20","end":"19:20","startHours":18.334571432365316,"endHours":19.334571432365316,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:20","end":"20:20","startHours":19.334571432365316,"endHours":20.334571432365316,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:20","end":"21:20","startHours":20.334571432365316,"endHours":21.334571432365316,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:20","end":"22:20","startHours":21.334571432365316,"endHours":22.334571432365316,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:20","end":"23:20","startHours":22.334571432365316,"endHours":23.334571432365316,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:20","end":"00:20","startHours":23.334571432365316,"endHours":24.334571432365316,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:20","end":"01:20","startHours":24.334571432365316,"endHours":25.334571432365316,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:20","end":"02:20","startHours":25.334571432365316,"endHours":26.334571432365316,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:20","end":"03:20","startHours":26.334571432365316,"endHours":27.334571432365316,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:20","end":"04:20","startHours":27.334571432365316,"endHours":28.334571432365316,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:20","end":"05:20","startHours":28.334571432365316,"endHours":29.334571432365316,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:20","end":"06:20","startHours":29.334571432365316,"endHours":30.334571432365316,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":3.917497615429139,"eotMinutes":4.753870929866006,"ayanamsa":23.4856}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"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":"Siṃha (Āvaṇi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Pratipada · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"festivals":[],"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 September 13, 1973 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"September 13, 1973 CE for Kolhāpur, Maharashtra: Kṛṣṇa Pratipada, sūryodaya 06:20, sūryāsta 18:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/1973-09-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/1973-09-13","sa":"https://sa.vidhyamitra.com/city/kolhapur/1973-09-13","hi":"https://hi.vidhyamitra.com/city/kolhapur/1973-09-13","x-default":"https://vidhyamitra.com/city/kolhapur/1973-09-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:32:32.247Z","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":"2026-05-31T09:32:32.247Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:32:32.247Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}