{"id":"vidhyamitra:city-day:mathura:1980-06-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1980-06-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-06-18","date_display":"June 18, 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":6,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444408.770833,"kali_year":5082,"ahargana":1855943.2708,"sun":{"sidereal_longitude":63.1806,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":126.6887,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.5081,"elapsed_within_tithi_degrees":3.5081},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":126.6887,"elapsed_within_degrees":6.6887},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.8693},"karana":{"half_tithi_index":10,"name":"Kaulava"},"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":1980,"month":6,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444408.770833,"ahargana":1855943.2708,"kali_year":5082,"ayanamsa_lahiri":23.5801,"grahas":{"sun":{"sidereal_longitude":63.38086700000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":125.95966700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false,"latitude":0.274},"mars":{"sidereal_longitude":144.710267,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":87.90456699999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":130.44656699999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":59.285167,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":146.981267,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":123.1941,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":303.1941,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1980,"month":6,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444408.770833,"kali_year":5082,"ahargana":1855943.2708,"sun":{"sidereal_longitude":63.1806,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":126.6887,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.5081,"elapsed_within_tithi_degrees":3.5081},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":126.6887,"elapsed_within_degrees":6.6887},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.8693},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.274,"elongation":63.508},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.274,"opposition_distance":116.492}},"eclipse_window_40days":[]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"05:24","sunsetLocal":"19:16","solarNoonLocal":"12:20","dayLengthHours":13.875717278395033,"dayLengthDisplay":"13 Hours 52 Mins 33 Secs","nightLengthDisplay":"10 Hours 07 Mins 27 Secs","moonriseLocal":"10:03","moonsetLocal":"22:58","rahuKala":{"name":"Rāhu Kāla","start":"12:20","end":"14:04","startHours":12.335363894448328,"endHours":14.069828554247707,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:08","end":"08:52","startHours":7.131969915050192,"endHours":8.86643457484957,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:36","end":"12:20","startHours":10.60089923464895,"endHours":12.335363894448328,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:06","startHours":8.635172620209653,"endHours":9.097696529489488,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.9756601418506055,"endHours":6.3456792692744735,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:48","startHours":11.872839985168495,"endHours":12.797887803728164,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:28","startHours":3.5474096181314745,"endHours":4.472457436691143,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:14","end":"05:24","startHours":4.241195482051226,"endHours":5.397505255250812,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:34","startHours":14.6479834408475,"endHours":15.57303125940717,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:04","end":"19:28","startHours":19.073222533645847,"endHours":19.473222533645846,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:16","end":"19:51","startHours":19.273222533645846,"endHours":19.85137742024564,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:01","end":"20:46","startHours":19.023222533645846,"endHours":20.773222533645846,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:48","startHours":23.872839985168493,"endHours":24.797887803728162,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:24","end":"07:08","startHours":5.397505255250812,"endHours":7.131969915050192,"quality":"auspicious"},{"name":"Amṛta","start":"07:08","end":"08:52","startHours":7.131969915050192,"endHours":8.86643457484957,"quality":"auspicious"},{"name":"Kāla","start":"08:52","end":"10:36","startHours":8.86643457484957,"endHours":10.60089923464895,"quality":"inauspicious"},{"name":"Śubha","start":"10:36","end":"12:20","startHours":10.60089923464895,"endHours":12.335363894448328,"quality":"auspicious"},{"name":"Roga","start":"12:20","end":"14:04","startHours":12.335363894448328,"endHours":14.069828554247707,"quality":"inauspicious"},{"name":"Udveg","start":"14:04","end":"15:48","startHours":14.069828554247707,"endHours":15.804293214047089,"quality":"inauspicious"},{"name":"Chala","start":"15:48","end":"17:32","startHours":15.804293214047089,"endHours":17.538757873846468,"quality":"neutral"},{"name":"Labha","start":"17:32","end":"19:16","startHours":17.538757873846468,"endHours":19.273222533645846,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:16","end":"20:32","startHours":19.273222533645846,"endHours":20.538757873846468,"quality":"inauspicious"},{"name":"Chala","start":"20:32","end":"21:48","startHours":20.538757873846468,"endHours":21.80429321404709,"quality":"neutral"},{"name":"Labha","start":"21:48","end":"23:04","startHours":21.80429321404709,"endHours":23.06982855424771,"quality":"auspicious"},{"name":"Amṛta","start":"23:04","end":"00:20","startHours":23.06982855424771,"endHours":24.335363894448328,"quality":"auspicious"},{"name":"Kāla","start":"00:20","end":"01:36","startHours":24.335363894448328,"endHours":25.60089923464895,"quality":"inauspicious"},{"name":"Śubha","start":"01:36","end":"02:52","startHours":25.60089923464895,"endHours":26.86643457484957,"quality":"auspicious"},{"name":"Roga","start":"02:52","end":"04:08","startHours":26.86643457484957,"endHours":28.131969915050192,"quality":"inauspicious"},{"name":"Udveg","start":"04:08","end":"05:24","startHours":28.131969915050192,"endHours":29.397505255250813,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.397505255250812,"endHours":6.397505255250812,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.397505255250812,"endHours":7.397505255250812,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.397505255250812,"endHours":8.397505255250813,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.397505255250813,"endHours":9.397505255250813,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.397505255250813,"endHours":10.397505255250813,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.397505255250813,"endHours":11.397505255250813,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.397505255250813,"endHours":12.397505255250813,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.397505255250813,"endHours":13.397505255250813,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.397505255250813,"endHours":14.397505255250813,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.397505255250813,"endHours":15.397505255250813,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.397505255250813,"endHours":16.397505255250813,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.397505255250813,"endHours":17.397505255250813,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.397505255250813,"endHours":18.397505255250813,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.397505255250813,"endHours":19.397505255250813,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.397505255250813,"endHours":20.397505255250813,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.397505255250813,"endHours":21.397505255250813,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.397505255250813,"endHours":22.397505255250813,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.397505255250813,"endHours":23.397505255250813,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.397505255250813,"endHours":24.397505255250813,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.397505255250813,"endHours":25.397505255250813,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.397505255250813,"endHours":26.397505255250813,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.397505255250813,"endHours":27.397505255250813,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.397505255250813,"endHours":28.397505255250813,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.397505255250813,"endHours":29.397505255250813,"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":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":23.401574444911653,"eotMinutes":-0.8166336668997627,"ayanamsa":23.5801}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Ṣaṣṭhī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"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":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga June 18, 1980 CE · Mathurā · Vidhyamitra","description":"June 18, 1980 CE for Mathurā: Śukla Ṣaṣṭhī, sūryodaya 05:24, sūryāsta 19:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1980-06-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1980-06-18","sa":"https://sa.vidhyamitra.com/city/mathura/1980-06-18","hi":"https://hi.vidhyamitra.com/city/mathura/1980-06-18","x-default":"https://vidhyamitra.com/city/mathura/1980-06-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T14:55:46.797Z","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":"2026-05-14T14:55:46.797Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T14:55:46.797Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}