{"id":"vidhyamitra:city-day:kolhapur:1980-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/1980-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-05-13","date_display":"May 13, 1980 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":1980,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444372.770833,"kali_year":5082,"ahargana":1855907.2708,"sun":{"sidereal_longitude":28.8969,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":10.6798,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":341.7829,"elapsed_within_tithi_degrees":5.7829},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.6798,"elapsed_within_degrees":10.6798},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":39.5767},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1980,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444372.770833,"ahargana":1855907.2708,"kali_year":5082,"ayanamsa_lahiri":23.5787,"grahas":{"sun":{"sidereal_longitude":28.858742000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":8.674941999999987,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":-4.0966},"mars":{"sidereal_longitude":129.432842,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":28.572442000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":126.95194199999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":66.84554200000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":146.491642,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":125.1015,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.1015,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1980,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444372.770833,"kali_year":5082,"ahargana":1855907.2708,"sun":{"sidereal_longitude":28.8969,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":10.6798,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":341.7829,"elapsed_within_tithi_degrees":5.7829},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.6798,"elapsed_within_degrees":10.6798},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":39.5767},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.097,"elongation":18.217},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.097,"opposition_distance":161.783}},"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":"06:03","sunsetLocal":"18:56","solarNoonLocal":"12:29","dayLengthHours":12.885844985204294,"dayLengthDisplay":"12 Hours 53 Mins 09 Secs","nightLengthDisplay":"11 Hours 06 Mins 51 Secs","moonriseLocal":"04:51","moonsetLocal":"17:26","rahuKala":{"name":"Rāhu Kāla","start":"15:43","end":"17:19","startHours":15.709350600575133,"endHours":17.32008122372567,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:16","end":"10:53","startHours":9.266428107972986,"endHours":10.877158731123522,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:29","end":"14:06","startHours":12.48788935427406,"endHours":14.098619977424597,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:29","startHours":9.051664024886248,"endHours":9.481192191059725,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:35","end":"06:56","startHours":6.581877069388758,"endHours":6.925499602327539,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:55","startHours":12.058361188100584,"endHours":12.917417520447536,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:20","end":"05:11","startHours":4.326854196978007,"endHours":5.1859105293249605,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:58","end":"06:03","startHours":4.971146446238222,"endHours":6.044966861671913,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:30","startHours":14.635530185141441,"endHours":15.494586517488393,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:44","end":"19:08","startHours":18.730811846876207,"endHours":19.130811846876206,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:56","end":"19:28","startHours":18.930811846876207,"endHours":19.467722054593054,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:41","end":"20:26","startHours":18.680811846876207,"endHours":20.430811846876207,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:55","startHours":24.058361188100584,"endHours":24.917417520447536,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:03","end":"07:39","startHours":6.044966861671913,"endHours":7.65569748482245,"quality":"inauspicious"},{"name":"Udveg","start":"07:39","end":"09:16","startHours":7.65569748482245,"endHours":9.266428107972986,"quality":"inauspicious"},{"name":"Chala","start":"09:16","end":"10:53","startHours":9.266428107972986,"endHours":10.877158731123522,"quality":"neutral"},{"name":"Labha","start":"10:53","end":"12:29","startHours":10.877158731123522,"endHours":12.48788935427406,"quality":"auspicious"},{"name":"Amṛta","start":"12:29","end":"14:06","startHours":12.48788935427406,"endHours":14.098619977424597,"quality":"auspicious"},{"name":"Kāla","start":"14:06","end":"15:43","startHours":14.098619977424597,"endHours":15.709350600575133,"quality":"inauspicious"},{"name":"Śubha","start":"15:43","end":"17:19","startHours":15.709350600575133,"endHours":17.32008122372567,"quality":"auspicious"},{"name":"Roga","start":"17:19","end":"18:56","startHours":17.32008122372567,"endHours":18.930811846876207,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:56","end":"20:19","startHours":18.930811846876207,"endHours":20.32008122372567,"quality":"inauspicious"},{"name":"Śubha","start":"20:19","end":"21:43","startHours":20.32008122372567,"endHours":21.709350600575135,"quality":"auspicious"},{"name":"Roga","start":"21:43","end":"23:06","startHours":21.709350600575135,"endHours":23.098619977424597,"quality":"inauspicious"},{"name":"Udveg","start":"23:06","end":"00:29","startHours":23.098619977424597,"endHours":24.48788935427406,"quality":"inauspicious"},{"name":"Chala","start":"00:29","end":"01:53","startHours":24.48788935427406,"endHours":25.877158731123522,"quality":"neutral"},{"name":"Labha","start":"01:53","end":"03:16","startHours":25.877158731123522,"endHours":27.266428107972985,"quality":"auspicious"},{"name":"Amṛta","start":"03:16","end":"04:39","startHours":27.266428107972985,"endHours":28.65569748482245,"quality":"auspicious"},{"name":"Kāla","start":"04:39","end":"06:03","startHours":28.65569748482245,"endHours":30.044966861671913,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:03","end":"07:03","startHours":6.044966861671913,"endHours":7.044966861671913,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:03","end":"08:03","startHours":7.044966861671913,"endHours":8.044966861671913,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:03","end":"09:03","startHours":8.044966861671913,"endHours":9.044966861671913,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:03","end":"10:03","startHours":9.044966861671913,"endHours":10.044966861671913,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:03","end":"11:03","startHours":10.044966861671913,"endHours":11.044966861671913,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:03","end":"12:03","startHours":11.044966861671913,"endHours":12.044966861671913,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:03","end":"13:03","startHours":12.044966861671913,"endHours":13.044966861671913,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:03","end":"14:03","startHours":13.044966861671913,"endHours":14.044966861671913,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:03","end":"15:03","startHours":14.044966861671913,"endHours":15.044966861671913,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:03","end":"16:03","startHours":15.044966861671913,"endHours":16.044966861671913,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:03","end":"17:03","startHours":16.044966861671913,"endHours":17.044966861671913,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:03","end":"18:03","startHours":17.044966861671913,"endHours":18.044966861671913,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:03","end":"19:03","startHours":18.044966861671913,"endHours":19.044966861671913,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:03","end":"20:03","startHours":19.044966861671913,"endHours":20.044966861671913,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:03","end":"21:03","startHours":20.044966861671913,"endHours":21.044966861671913,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:03","end":"22:03","startHours":21.044966861671913,"endHours":22.044966861671913,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:03","end":"23:03","startHours":22.044966861671913,"endHours":23.044966861671913,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:03","end":"00:03","startHours":23.044966861671913,"endHours":24.044966861671913,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:03","end":"01:03","startHours":24.044966861671913,"endHours":25.044966861671913,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:03","end":"02:03","startHours":25.044966861671913,"endHours":26.044966861671913,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:03","end":"03:03","startHours":26.044966861671913,"endHours":27.044966861671913,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:03","end":"04:03","startHours":27.044966861671913,"endHours":28.044966861671913,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:03","end":"05:03","startHours":28.044966861671913,"endHours":29.044966861671913,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:03","end":"06:03","startHours":29.044966861671913,"endHours":30.044966861671913,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.377586764122327,"eotMinutes":3.7534387435564067,"ayanamsa":23.5787}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Caturdaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 May 13, 1980 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"May 13, 1980 CE for Kolhāpur, Maharashtra: Kṛṣṇa Caturdaśī, sūryodaya 06:03, sūryāsta 18:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/1980-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/1980-05-13","sa":"https://sa.vidhyamitra.com/city/kolhapur/1980-05-13","hi":"https://hi.vidhyamitra.com/city/kolhapur/1980-05-13","x-default":"https://vidhyamitra.com/city/kolhapur/1980-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:27:39.956Z","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":"2026-05-31T09:27:39.956Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:27:39.956Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}