{"id":"vidhyamitra:city-day:kolhapur:1981-04-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/kolhapur/1981-04-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-15","date_display":"April 15, 1981 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":1981,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444709.770833,"kali_year":5082,"ahargana":1856244.2708,"sun":{"sidereal_longitude":1.5746,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":132.1093,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":130.5346,"elapsed_within_tithi_degrees":10.5346},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":132.1093,"elapsed_within_degrees":12.1093},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.6839},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1981,"month":4,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444709.770833,"ahargana":1856244.2708,"kali_year":5082,"ayanamsa_lahiri":23.5916,"grahas":{"sun":{"sidereal_longitude":1.402466000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":133.620366,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false,"latitude":1.8905},"mars":{"sidereal_longitude":358.915066,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":348.383066,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":159.56786599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":3.653566000000012,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":161.19926599999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.2457,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.2457,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444709.770833,"kali_year":5082,"ahargana":1856244.2708,"sun":{"sidereal_longitude":1.5746,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":132.1093,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":130.5346,"elapsed_within_tithi_degrees":10.5346},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":132.1093,"elapsed_within_degrees":12.1093},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.6839},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.89,"elongation":130.535},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.89,"opposition_distance":49.465}},"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":"06:18","sunsetLocal":"18:49","solarNoonLocal":"12:33","dayLengthHours":12.508850658895353,"dayLengthDisplay":"12 Hours 30 Mins 32 Secs","nightLengthDisplay":"11 Hours 29 Mins 28 Secs","moonriseLocal":"15:09","moonsetLocal":"03:35","rahuKala":{"name":"Rāhu Kāla","start":"12:33","end":"14:07","startHours":12.554448734296784,"endHours":14.118055066658705,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:52","end":"09:26","startHours":7.863629737211028,"endHours":9.427236069572947,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:59","end":"12:33","startHours":10.990842401934867,"endHours":12.554448734296784,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:38","startHours":9.218755225258024,"endHours":9.635716913887869,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:49","end":"07:09","startHours":6.8212255156364145,"endHours":7.154794866540291,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:58","startHours":12.137487045666939,"endHours":12.97141042292663,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:38","end":"05:28","startHours":4.632176650329728,"endHours":5.466100027589418,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:15","end":"06:18","startHours":5.257619183274496,"endHours":6.300023404849108,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:28","startHours":14.63925717744601,"endHours":15.473180554705701,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:37","end":"19:01","startHours":18.608874063744462,"endHours":19.00887406374446,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:49","end":"19:20","startHours":18.80887406374446,"endHours":19.33007617453177,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:34","end":"20:19","startHours":18.55887406374446,"endHours":20.30887406374446,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:58","startHours":24.13748704566694,"endHours":24.971410422926628,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:18","end":"07:52","startHours":6.300023404849108,"endHours":7.863629737211028,"quality":"auspicious"},{"name":"Amṛta","start":"07:52","end":"09:26","startHours":7.863629737211028,"endHours":9.427236069572947,"quality":"auspicious"},{"name":"Kāla","start":"09:26","end":"10:59","startHours":9.427236069572947,"endHours":10.990842401934867,"quality":"inauspicious"},{"name":"Śubha","start":"10:59","end":"12:33","startHours":10.990842401934867,"endHours":12.554448734296784,"quality":"auspicious"},{"name":"Roga","start":"12:33","end":"14:07","startHours":12.554448734296784,"endHours":14.118055066658705,"quality":"inauspicious"},{"name":"Udveg","start":"14:07","end":"15:41","startHours":14.118055066658705,"endHours":15.681661399020623,"quality":"inauspicious"},{"name":"Chala","start":"15:41","end":"17:15","startHours":15.681661399020623,"endHours":17.24526773138254,"quality":"neutral"},{"name":"Labha","start":"17:15","end":"18:49","startHours":17.24526773138254,"endHours":18.80887406374446,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:49","end":"20:15","startHours":18.80887406374446,"endHours":20.245267731382544,"quality":"inauspicious"},{"name":"Chala","start":"20:15","end":"21:41","startHours":20.245267731382544,"endHours":21.681661399020623,"quality":"neutral"},{"name":"Labha","start":"21:41","end":"23:07","startHours":21.681661399020623,"endHours":23.118055066658705,"quality":"auspicious"},{"name":"Amṛta","start":"23:07","end":"00:33","startHours":23.118055066658705,"endHours":24.554448734296784,"quality":"auspicious"},{"name":"Kāla","start":"00:33","end":"01:59","startHours":24.554448734296784,"endHours":25.990842401934867,"quality":"inauspicious"},{"name":"Śubha","start":"01:59","end":"03:26","startHours":25.990842401934867,"endHours":27.42723606957295,"quality":"auspicious"},{"name":"Roga","start":"03:26","end":"04:52","startHours":27.42723606957295,"endHours":28.863629737211028,"quality":"inauspicious"},{"name":"Udveg","start":"04:52","end":"06:18","startHours":28.863629737211028,"endHours":30.300023404849107,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:18","end":"07:18","startHours":6.300023404849108,"endHours":7.300023404849108,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:18","end":"08:18","startHours":7.300023404849108,"endHours":8.300023404849108,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:18","end":"09:18","startHours":8.300023404849108,"endHours":9.300023404849108,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:18","end":"10:18","startHours":9.300023404849108,"endHours":10.300023404849108,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:18","end":"11:18","startHours":10.300023404849108,"endHours":11.300023404849108,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:18","end":"12:18","startHours":11.300023404849108,"endHours":12.300023404849108,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:18","end":"13:18","startHours":12.300023404849108,"endHours":13.300023404849108,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:18","end":"14:18","startHours":13.300023404849108,"endHours":14.300023404849108,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:18","end":"15:18","startHours":14.300023404849108,"endHours":15.300023404849108,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:18","end":"16:18","startHours":15.300023404849108,"endHours":16.300023404849107,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:18","end":"17:18","startHours":16.300023404849107,"endHours":17.300023404849107,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:18","end":"18:18","startHours":17.300023404849107,"endHours":18.300023404849107,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:18","end":"19:18","startHours":18.300023404849107,"endHours":19.300023404849107,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:18","end":"20:18","startHours":19.300023404849107,"endHours":20.300023404849107,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:18","end":"21:18","startHours":20.300023404849107,"endHours":21.300023404849107,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:18","end":"22:18","startHours":21.300023404849107,"endHours":22.300023404849107,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:18","end":"23:18","startHours":22.300023404849107,"endHours":23.300023404849107,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:18","end":"00:18","startHours":23.300023404849107,"endHours":24.300023404849107,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:18","end":"01:18","startHours":24.300023404849107,"endHours":25.300023404849107,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:18","end":"02:18","startHours":25.300023404849107,"endHours":26.300023404849107,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:18","end":"03:18","startHours":26.300023404849107,"endHours":27.300023404849107,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:18","end":"04:18","startHours":27.300023404849107,"endHours":28.300023404849107,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:18","end":"05:18","startHours":28.300023404849107,"endHours":29.300023404849107,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:18","end":"06:18","startHours":29.300023404849107,"endHours":30.300023404849107,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"West","rahuVasa":"South-West","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":9.674558171674363,"eotMinutes":-0.240124057807095,"ayanamsa":23.5916}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"mohini-ekadashi","name":"Mohinī Ekādaśī","name_sanskrit":"मोहिनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu (Mohinī form)","significance":"Mohinī-form of Viṣṇu deceived asuras during samudra-mathana for amṛta.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":3,"sources":["Bhāgavata 8.9"]},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 15, 1981 CE · Kolhāpur, Maharashtra · Vidhyamitra","description":"April 15, 1981 CE for Kolhāpur, Maharashtra: Śukla Ekādaśī, sūryodaya 06:18, sūryāsta 18:49.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/kolhapur/1981-04-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/kolhapur/1981-04-15","sa":"https://sa.vidhyamitra.com/city/kolhapur/1981-04-15","hi":"https://hi.vidhyamitra.com/city/kolhapur/1981-04-15","x-default":"https://vidhyamitra.com/city/kolhapur/1981-04-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T14:59:37.583Z","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":"2026-05-18T14:59:37.583Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T14:59:37.583Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}