{"id":"vidhyamitra:city-day:surat:1981-06-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/surat/1981-06-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-06-17","date_display":"June 17, 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":6,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444772.770833,"kali_year":5083,"ahargana":1856307.2708,"sun":{"sidereal_longitude":61.9878,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":235.3364,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.3487,"elapsed_within_tithi_degrees":5.3487},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":235.3364,"elapsed_within_degrees":8.6698},"yoga":{"number":23,"name":"Śubha","sum_longitude":297.3242},"karana":{"half_tithi_index":28,"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":6,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444772.770833,"ahargana":1856307.2708,"kali_year":5083,"ayanamsa_lahiri":23.594,"grahas":{"sun":{"sidereal_longitude":62.181358999999986,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":235.640359,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false,"latitude":3.3725},"mars":{"sidereal_longitude":45.027559,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":69.95335899999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":157.67615899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":81.07965899999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":159.26295900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":103.9076,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":283.9076,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":6,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444772.770833,"kali_year":5083,"ahargana":1856307.2708,"sun":{"sidereal_longitude":61.9878,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":235.3364,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.3487,"elapsed_within_tithi_degrees":5.3487},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":235.3364,"elapsed_within_degrees":8.6698},"yoga":{"number":23,"name":"Śubha","sum_longitude":297.3242},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.372,"elongation":173.349},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.372,"opposition_distance":6.651}},"eclipse_window_40days":[]},"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"tier2":{"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"sunriseLocal":"05:57","sunsetLocal":"19:22","solarNoonLocal":"12:39","dayLengthHours":13.416232110183596,"dayLengthDisplay":"13 Hours 24 Mins 58 Secs","nightLengthDisplay":"10 Hours 35 Mins 02 Secs","moonriseLocal":"18:48","moonsetLocal":"05:38","rahuKala":{"name":"Rāhu Kāla","start":"12:39","end":"14:20","startHours":12.654715928569924,"endHours":14.331744942342876,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:37","end":"09:18","startHours":7.623628887251076,"endHours":9.300657901024026,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:59","end":"12:39","startHours":10.977686914796976,"endHours":12.654715928569924,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:05","end":"09:31","startHours":9.077054032520966,"endHours":9.524261769527087,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:52","startHours":6.505609544735777,"endHours":6.863375734340673,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:12","end":"13:06","startHours":12.207508191563806,"endHours":13.101923665576047,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:09","end":"05:03","startHours":4.157768925453648,"endHours":5.0521843994658875,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:50","end":"05:57","startHours":4.828580530962827,"endHours":5.946599873478127,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:53","end":"15:47","startHours":14.890754613600524,"endHours":15.785170087612764,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:10","end":"19:34","startHours":19.162831983661725,"endHours":19.562831983661724,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:22","end":"19:55","startHours":19.362831983661724,"endHours":19.921841654919373,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:07","end":"20:52","startHours":19.112831983661724,"endHours":20.862831983661724,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:12","end":"01:06","startHours":24.207508191563807,"endHours":25.10192366557605,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:57","end":"07:37","startHours":5.946599873478127,"endHours":7.623628887251076,"quality":"auspicious"},{"name":"Amṛta","start":"07:37","end":"09:18","startHours":7.623628887251076,"endHours":9.300657901024026,"quality":"auspicious"},{"name":"Kāla","start":"09:18","end":"10:59","startHours":9.300657901024026,"endHours":10.977686914796976,"quality":"inauspicious"},{"name":"Śubha","start":"10:59","end":"12:39","startHours":10.977686914796976,"endHours":12.654715928569924,"quality":"auspicious"},{"name":"Roga","start":"12:39","end":"14:20","startHours":12.654715928569924,"endHours":14.331744942342876,"quality":"inauspicious"},{"name":"Udveg","start":"14:20","end":"16:01","startHours":14.331744942342876,"endHours":16.008773956115824,"quality":"inauspicious"},{"name":"Chala","start":"16:01","end":"17:41","startHours":16.008773956115824,"endHours":17.685802969888773,"quality":"neutral"},{"name":"Labha","start":"17:41","end":"19:22","startHours":17.685802969888773,"endHours":19.362831983661724,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:22","end":"20:41","startHours":19.362831983661724,"endHours":20.685802969888776,"quality":"inauspicious"},{"name":"Chala","start":"20:41","end":"22:01","startHours":20.685802969888776,"endHours":22.008773956115824,"quality":"neutral"},{"name":"Labha","start":"22:01","end":"23:20","startHours":22.008773956115824,"endHours":23.331744942342876,"quality":"auspicious"},{"name":"Amṛta","start":"23:20","end":"00:39","startHours":23.331744942342876,"endHours":24.654715928569928,"quality":"auspicious"},{"name":"Kāla","start":"00:39","end":"01:59","startHours":24.654715928569928,"endHours":25.977686914796976,"quality":"inauspicious"},{"name":"Śubha","start":"01:59","end":"03:18","startHours":25.977686914796976,"endHours":27.300657901024028,"quality":"auspicious"},{"name":"Roga","start":"03:18","end":"04:37","startHours":27.300657901024028,"endHours":28.62362888725108,"quality":"inauspicious"},{"name":"Udveg","start":"04:37","end":"05:57","startHours":28.62362888725108,"endHours":29.946599873478128,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.946599873478127,"endHours":6.946599873478127,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.946599873478127,"endHours":7.946599873478127,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.946599873478127,"endHours":8.946599873478128,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.946599873478128,"endHours":9.946599873478128,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.946599873478128,"endHours":10.946599873478128,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.946599873478128,"endHours":11.946599873478128,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.946599873478128,"endHours":12.946599873478128,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.946599873478128,"endHours":13.946599873478128,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.946599873478128,"endHours":14.946599873478128,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.946599873478128,"endHours":15.946599873478128,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.946599873478128,"endHours":16.946599873478128,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.946599873478128,"endHours":17.946599873478128,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.946599873478128,"endHours":18.946599873478128,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.946599873478128,"endHours":19.946599873478128,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.946599873478128,"endHours":20.946599873478128,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.946599873478128,"endHours":21.946599873478128,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.946599873478128,"endHours":22.946599873478128,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.946599873478128,"endHours":23.946599873478128,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.946599873478128,"endHours":24.946599873478128,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.946599873478128,"endHours":25.946599873478128,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.946599873478128,"endHours":26.946599873478128,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.946599873478128,"endHours":27.946599873478128,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.946599873478128,"endHours":28.946599873478128,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.946599873478128,"endHours":29.946599873478128,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"North-East","rahuVasa":"South-West","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":23.369031077520287,"eotMinutes":-0.6073557141955915,"ayanamsa":23.594}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Jyeṣṭha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Pūrṇimā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"jyeshtha-purnima","name":"Jyeṣṭha Pūrṇimā (Vaṭa Sāvitrī)","name_sanskrit":"ज्येष्ठ पूर्णिमा","tradition":"Pan-Hindu","significance":"Vaṭa Sāvitrī Pūrṇimā in some traditions (others observe Amāvasyā).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Jyeṣṭha"},"precedence":3}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"surat"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga June 17, 1981 CE · Surat, Gujarat · Vidhyamitra","description":"June 17, 1981 CE for Surat, Gujarat: Śukla Pūrṇimā, sūryodaya 05:57, sūryāsta 19:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/surat/1981-06-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/surat/1981-06-17","sa":"https://sa.vidhyamitra.com/city/surat/1981-06-17","hi":"https://hi.vidhyamitra.com/city/surat/1981-06-17","x-default":"https://vidhyamitra.com/city/surat/1981-06-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T15:08:36.109Z","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":"2026-06-02T15:08:36.109Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T15:08:36.109Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}