{"id":"vidhyamitra:city-day:jamnagar:1981-10-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1981-10-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-11","date_display":"October 11, 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":10,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444888.770833,"kali_year":5083,"ahargana":1856423.2708,"sun":{"sidereal_longitude":173.3483,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":320.3874,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":147.0391,"elapsed_within_tithi_degrees":3.0391},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.3874,"elapsed_within_degrees":0.3874},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.7358},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":10,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444888.770833,"ahargana":1856423.2708,"kali_year":5083,"ayanamsa_lahiri":23.5984,"grahas":{"sun":{"sidereal_longitude":174.04442700000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":320.42302700000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":-3.0458},"mars":{"sidereal_longitude":120.71842700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":189.41792699999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":176.82742699999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":218.99802699999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":169.52502700000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":97.7614,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.7614,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1981,"month":10,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444888.770833,"kali_year":5083,"ahargana":1856423.2708,"sun":{"sidereal_longitude":173.3483,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":320.3874,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":147.0391,"elapsed_within_tithi_degrees":3.0391},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.3874,"elapsed_within_degrees":0.3874},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.7358},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.046,"elongation":147.039},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.046,"opposition_distance":32.961}},"eclipse_window_40days":[]},"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"sunriseLocal":"06:44","sunsetLocal":"18:28","solarNoonLocal":"12:36","dayLengthHours":11.737323050740294,"dayLengthDisplay":"11 Hours 44 Mins 14 Secs","nightLengthDisplay":"12 Hours 15 Mins 46 Secs","moonriseLocal":"16:29","moonsetLocal":"04:13","rahuKala":{"name":"Rāhu Kāla","start":"17:00","end":"18:28","startHours":16.997876577423778,"endHours":18.465041958766314,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:36","end":"14:04","startHours":12.596380433396167,"endHours":14.063545814738703,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:32","end":"17:00","startHours":15.53071119608124,"endHours":16.997876577423778,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:28","end":"09:51","startHours":9.46642761986542,"endHours":9.857671721556764,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:32","startHours":7.216774035140199,"endHours":7.529769316493274,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:12","end":"12:59","startHours":12.205136331704823,"endHours":12.98762453508751,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:57","startHours":5.162742501260648,"endHours":5.9452307046433335,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:45","end":"06:44","startHours":5.7496086537976625,"endHours":6.72771890802602,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:20","startHours":14.552600941852882,"endHours":15.335089145235568,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:16","end":"18:40","startHours":18.265041958766314,"endHours":18.665041958766313,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:28","end":"18:57","startHours":18.465041958766314,"endHours":18.95409708588049,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:13","end":"19:58","startHours":18.215041958766314,"endHours":19.965041958766314,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:12","end":"00:59","startHours":24.205136331704825,"endHours":24.98762453508751,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:44","end":"08:12","startHours":6.72771890802602,"endHours":8.194884289368556,"quality":"inauspicious"},{"name":"Chala","start":"08:12","end":"09:40","startHours":8.194884289368556,"endHours":9.662049670711093,"quality":"neutral"},{"name":"Labha","start":"09:40","end":"11:08","startHours":9.662049670711093,"endHours":11.129215052053631,"quality":"auspicious"},{"name":"Amṛta","start":"11:08","end":"12:36","startHours":11.129215052053631,"endHours":12.596380433396167,"quality":"auspicious"},{"name":"Kāla","start":"12:36","end":"14:04","startHours":12.596380433396167,"endHours":14.063545814738703,"quality":"inauspicious"},{"name":"Śubha","start":"14:04","end":"15:32","startHours":14.063545814738703,"endHours":15.53071119608124,"quality":"auspicious"},{"name":"Roga","start":"15:32","end":"17:00","startHours":15.53071119608124,"endHours":16.997876577423778,"quality":"inauspicious"},{"name":"Udveg","start":"17:00","end":"18:28","startHours":16.997876577423778,"endHours":18.465041958766314,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:28","end":"20:00","startHours":18.465041958766314,"endHours":19.997876577423778,"quality":"auspicious"},{"name":"Roga","start":"20:00","end":"21:32","startHours":19.997876577423778,"endHours":21.530711196081242,"quality":"inauspicious"},{"name":"Udveg","start":"21:32","end":"23:04","startHours":21.530711196081242,"endHours":23.063545814738703,"quality":"inauspicious"},{"name":"Chala","start":"23:04","end":"00:36","startHours":23.063545814738703,"endHours":24.596380433396167,"quality":"neutral"},{"name":"Labha","start":"00:36","end":"02:08","startHours":24.596380433396167,"endHours":26.12921505205363,"quality":"auspicious"},{"name":"Amṛta","start":"02:08","end":"03:40","startHours":26.12921505205363,"endHours":27.66204967071109,"quality":"auspicious"},{"name":"Kāla","start":"03:40","end":"05:12","startHours":27.66204967071109,"endHours":29.194884289368556,"quality":"inauspicious"},{"name":"Śubha","start":"05:12","end":"06:44","startHours":29.194884289368556,"endHours":30.72771890802602,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:44","end":"07:44","startHours":6.72771890802602,"endHours":7.72771890802602,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:44","end":"08:44","startHours":7.72771890802602,"endHours":8.72771890802602,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:44","end":"09:44","startHours":8.72771890802602,"endHours":9.72771890802602,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:44","end":"10:44","startHours":9.72771890802602,"endHours":10.72771890802602,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:44","end":"11:44","startHours":10.72771890802602,"endHours":11.72771890802602,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:44","end":"12:44","startHours":11.72771890802602,"endHours":12.72771890802602,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:44","end":"13:44","startHours":12.72771890802602,"endHours":13.72771890802602,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:44","end":"14:44","startHours":13.72771890802602,"endHours":14.72771890802602,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:44","end":"15:44","startHours":14.72771890802602,"endHours":15.72771890802602,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:44","end":"16:44","startHours":15.72771890802602,"endHours":16.72771890802602,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:44","end":"17:44","startHours":16.72771890802602,"endHours":17.72771890802602,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:44","end":"18:44","startHours":17.72771890802602,"endHours":18.72771890802602,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:44","end":"19:44","startHours":18.72771890802602,"endHours":19.72771890802602,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:44","end":"20:44","startHours":19.72771890802602,"endHours":20.72771890802602,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:44","end":"21:44","startHours":20.72771890802602,"endHours":21.72771890802602,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:44","end":"22:44","startHours":21.72771890802602,"endHours":22.72771890802602,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:44","end":"23:44","startHours":22.72771890802602,"endHours":23.72771890802602,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:44","end":"00:44","startHours":23.72771890802602,"endHours":24.72771890802602,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:44","end":"01:44","startHours":24.72771890802602,"endHours":25.72771890802602,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:44","end":"02:44","startHours":25.72771890802602,"endHours":26.72771890802602,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:44","end":"03:44","startHours":26.72771890802602,"endHours":27.72771890802602,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:44","end":"04:44","startHours":27.72771890802602,"endHours":28.72771890802602,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:44","end":"05:44","startHours":28.72771890802602,"endHours":29.72771890802602,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:44","end":"06:44","startHours":29.72771890802602,"endHours":30.72771890802602,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-6.923595493347793,"eotMinutes":13.986373996230075,"ayanamsa":23.5984}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Trayodaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"jamnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 11, 1981 CE · Jamnagar, Gujarat · Vidhyamitra","description":"October 11, 1981 CE for Jamnagar, Gujarat: Śukla Trayodaśī, sūryodaya 06:44, sūryāsta 18:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1981-10-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1981-10-11","sa":"https://sa.vidhyamitra.com/city/jamnagar/1981-10-11","hi":"https://hi.vidhyamitra.com/city/jamnagar/1981-10-11","x-default":"https://vidhyamitra.com/city/jamnagar/1981-10-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T21:34:04.039Z","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":"2026-05-18T21:34:04.039Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T21:34:04.039Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}