{"id":"vidhyamitra:city-day:kolhapur:1980-04-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/1980-04-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-04-28","date_display":"April 28, 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":4,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444357.770833,"kali_year":5082,"ahargana":1855892.2708,"sun":{"sidereal_longitude":14.4519,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":168.3841,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":153.9322,"elapsed_within_tithi_degrees":9.9322},"nakshatra":{"number":13,"name":"Hasta","pada":3,"moon_longitude":168.3841,"elapsed_within_degrees":8.3841},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.836},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":4,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444357.770833,"ahargana":1855892.2708,"kali_year":5082,"ayanamsa_lahiri":23.5781,"grahas":{"sun":{"sidereal_longitude":14.33311500000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":169.18651499999999,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":3.0377},"mars":{"sidereal_longitude":125.18111499999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":358.25541499999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":126.51881500000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":58.120115,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":146.932815,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":125.8963,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.8963,"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":4,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444357.770833,"kali_year":5082,"ahargana":1855892.2708,"sun":{"sidereal_longitude":14.4519,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":168.3841,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":153.9322,"elapsed_within_tithi_degrees":9.9322},"nakshatra":{"number":13,"name":"Hasta","pada":3,"moon_longitude":168.3841,"elapsed_within_degrees":8.3841},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.836},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.038,"elongation":153.932},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.038,"opposition_distance":26.068}},"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":"06:10","sunsetLocal":"18:51","solarNoonLocal":"12:31","dayLengthHours":12.698362404229663,"dayLengthDisplay":"12 Hours 41 Mins 54 Secs","nightLengthDisplay":"11 Hours 18 Mins 06 Secs","moonriseLocal":"16:54","moonsetLocal":"04:46","rahuKala":{"name":"Rāhu Kāla","start":"07:45","end":"09:20","startHours":7.747021262490214,"endHours":9.334316563018922,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:55","end":"12:31","startHours":10.921611863547628,"endHours":12.508907164076337,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:06","end":"15:41","startHours":14.096202464605046,"endHours":15.683497765133753,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:33","startHours":9.122677189615093,"endHours":9.54595593642275,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:41","end":"07:02","startHours":6.688824395471075,"endHours":7.0274473929172,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:56","startHours":12.085628417268682,"endHours":12.932185910883993,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:19","startHours":4.466610974730884,"endHours":5.313168468346195,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:06","end":"06:10","startHours":5.101529094942367,"endHours":6.159725961961506,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:28","startHours":14.625300898114615,"endHours":15.471858391729926,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:39","end":"19:03","startHours":18.65808836619117,"endHours":19.058088366191168,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:51","end":"19:23","startHours":18.85808836619117,"endHours":19.38718679970074,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:36","end":"20:21","startHours":18.60808836619117,"endHours":20.35808836619117,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:56","startHours":24.085628417268683,"endHours":24.93218591088399,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:10","end":"07:45","startHours":6.159725961961506,"endHours":7.747021262490214,"quality":"auspicious"},{"name":"Kāla","start":"07:45","end":"09:20","startHours":7.747021262490214,"endHours":9.334316563018922,"quality":"inauspicious"},{"name":"Śubha","start":"09:20","end":"10:55","startHours":9.334316563018922,"endHours":10.921611863547628,"quality":"auspicious"},{"name":"Roga","start":"10:55","end":"12:31","startHours":10.921611863547628,"endHours":12.508907164076337,"quality":"inauspicious"},{"name":"Udveg","start":"12:31","end":"14:06","startHours":12.508907164076337,"endHours":14.096202464605046,"quality":"inauspicious"},{"name":"Chala","start":"14:06","end":"15:41","startHours":14.096202464605046,"endHours":15.683497765133753,"quality":"neutral"},{"name":"Labha","start":"15:41","end":"17:16","startHours":15.683497765133753,"endHours":17.27079306566246,"quality":"auspicious"},{"name":"Amṛta","start":"17:16","end":"18:51","startHours":17.27079306566246,"endHours":18.85808836619117,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:51","end":"20:16","startHours":18.85808836619117,"endHours":20.27079306566246,"quality":"neutral"},{"name":"Labha","start":"20:16","end":"21:41","startHours":20.27079306566246,"endHours":21.68349776513375,"quality":"auspicious"},{"name":"Amṛta","start":"21:41","end":"23:06","startHours":21.68349776513375,"endHours":23.096202464605046,"quality":"auspicious"},{"name":"Kāla","start":"23:06","end":"00:31","startHours":23.096202464605046,"endHours":24.508907164076337,"quality":"inauspicious"},{"name":"Śubha","start":"00:31","end":"01:55","startHours":24.508907164076337,"endHours":25.92161186354763,"quality":"auspicious"},{"name":"Roga","start":"01:55","end":"03:20","startHours":25.92161186354763,"endHours":27.334316563018923,"quality":"inauspicious"},{"name":"Udveg","start":"03:20","end":"04:45","startHours":27.334316563018923,"endHours":28.747021262490215,"quality":"inauspicious"},{"name":"Chala","start":"04:45","end":"06:10","startHours":28.747021262490215,"endHours":30.159725961961506,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:10","end":"07:10","startHours":6.159725961961506,"endHours":7.159725961961506,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:10","end":"08:10","startHours":7.159725961961506,"endHours":8.159725961961506,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:10","end":"09:10","startHours":8.159725961961506,"endHours":9.159725961961506,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:10","end":"10:10","startHours":9.159725961961506,"endHours":10.159725961961506,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:10","end":"11:10","startHours":10.159725961961506,"endHours":11.159725961961506,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:10","end":"12:10","startHours":11.159725961961506,"endHours":12.159725961961506,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:10","end":"13:10","startHours":12.159725961961506,"endHours":13.159725961961506,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:10","end":"14:10","startHours":13.159725961961506,"endHours":14.159725961961506,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:10","end":"15:10","startHours":14.159725961961506,"endHours":15.159725961961506,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:10","end":"16:10","startHours":15.159725961961506,"endHours":16.159725961961506,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:10","end":"17:10","startHours":16.159725961961506,"endHours":17.159725961961506,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:10","end":"18:10","startHours":17.159725961961506,"endHours":18.159725961961506,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:10","end":"19:10","startHours":18.159725961961506,"endHours":19.159725961961506,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:10","end":"20:10","startHours":19.159725961961506,"endHours":20.159725961961506,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:10","end":"21:10","startHours":20.159725961961506,"endHours":21.159725961961506,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:10","end":"22:10","startHours":21.159725961961506,"endHours":22.159725961961506,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:10","end":"23:10","startHours":22.159725961961506,"endHours":23.159725961961506,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:10","end":"00:10","startHours":23.159725961961506,"endHours":24.159725961961506,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:10","end":"01:10","startHours":24.159725961961506,"endHours":25.159725961961506,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:10","end":"02:10","startHours":25.159725961961506,"endHours":26.159725961961506,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:10","end":"03:10","startHours":26.159725961961506,"endHours":27.159725961961506,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:10","end":"04:10","startHours":27.159725961961506,"endHours":28.159725961961506,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:10","end":"05:10","startHours":28.159725961961506,"endHours":29.159725961961506,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:10","end":"06:10","startHours":29.159725961961506,"endHours":30.159725961961506,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Mṛtyu","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":14.14534973913609,"eotMinutes":2.4923701554198168,"ayanamsa":23.5781}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","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":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Trayodaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 April 28, 1980 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"April 28, 1980 CE for Kolhāpur, Maharashtra: Śukla Trayodaśī, sūryodaya 06:10, sūryāsta 18:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/1980-04-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/1980-04-28","sa":"https://sa.vidhyamitra.com/city/kolhapur/1980-04-28","hi":"https://hi.vidhyamitra.com/city/kolhapur/1980-04-28","x-default":"https://vidhyamitra.com/city/kolhapur/1980-04-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:52:25.163Z","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":"2026-05-31T19:52:25.163Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:52:25.163Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}