{"id":"vidhyamitra:city-day:jamnagar:1985-12-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1985-12-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1985-12-20","date_display":"December 20, 1985 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":1985,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446419.770833,"kali_year":5087,"ahargana":1857954.2708,"sun":{"sidereal_longitude":244.1337,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":342.4905,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.3568,"elapsed_within_tithi_degrees":2.3568},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3,"moon_longitude":342.4905,"elapsed_within_degrees":9.1571},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":226.6242},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1985,"month":12,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446419.770833,"ahargana":1857954.2708,"kali_year":5087,"ayanamsa_lahiri":23.657,"grahas":{"sun":{"sidereal_longitude":244.44113200000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":345.196932,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":-2.5244},"mars":{"sidereal_longitude":189.725232,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":223.371532,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":292.982032,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"venus":{"sidereal_longitude":237.315432,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":219.824932,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":16.6416,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":196.6416,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":1985,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446419.770833,"kali_year":5087,"ahargana":1857954.2708,"sun":{"sidereal_longitude":244.1337,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":342.4905,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.3568,"elapsed_within_tithi_degrees":2.3568},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3,"moon_longitude":342.4905,"elapsed_within_degrees":9.1571},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":226.6242},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.524,"elongation":98.357},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.524,"opposition_distance":81.643}},"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":"07:25","sunsetLocal":"18:11","solarNoonLocal":"12:48","dayLengthHours":10.756645052078873,"dayLengthDisplay":"10 Hours 45 Mins 24 Secs","nightLengthDisplay":"13 Hours 14 Mins 36 Secs","moonriseLocal":"13:23","moonsetLocal":"01:39","rahuKala":{"name":"Rāhu Kāla","start":"11:27","end":"12:48","startHours":11.454040743115664,"endHours":12.798621374625522,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:29","end":"16:50","startHours":15.487782637645243,"endHours":16.8323632691551,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:46","end":"10:07","startHours":8.764879480095946,"endHours":10.109460111605806,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:56","end":"10:17","startHours":9.930182694071156,"endHours":10.288737529140453,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:09","startHours":7.868492392422707,"endHours":8.155336260478144,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:26","end":"13:09","startHours":12.440066539556227,"endHours":13.157176209694818,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:59","end":"06:42","startHours":5.986079508308904,"endHours":6.703189178447495,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:31","end":"07:25","startHours":6.523911760912847,"endHours":7.420298848586087,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:19","startHours":14.591395549972002,"endHours":15.308505220110595,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:59","end":"18:23","startHours":17.97694390066496,"endHours":18.37694390066496,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:11","end":"18:38","startHours":18.17694390066496,"endHours":18.62513744450158,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:56","end":"19:41","startHours":17.92694390066496,"endHours":19.67694390066496,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:26","end":"01:09","startHours":24.440066539556227,"endHours":25.157176209694818,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:25","end":"08:46","startHours":7.420298848586087,"endHours":8.764879480095946,"quality":"neutral"},{"name":"Labha","start":"08:46","end":"10:07","startHours":8.764879480095946,"endHours":10.109460111605806,"quality":"auspicious"},{"name":"Amṛta","start":"10:07","end":"11:27","startHours":10.109460111605806,"endHours":11.454040743115664,"quality":"auspicious"},{"name":"Kāla","start":"11:27","end":"12:48","startHours":11.454040743115664,"endHours":12.798621374625522,"quality":"inauspicious"},{"name":"Śubha","start":"12:48","end":"14:09","startHours":12.798621374625522,"endHours":14.143202006135382,"quality":"auspicious"},{"name":"Roga","start":"14:09","end":"15:29","startHours":14.143202006135382,"endHours":15.487782637645243,"quality":"inauspicious"},{"name":"Udveg","start":"15:29","end":"16:50","startHours":15.487782637645243,"endHours":16.8323632691551,"quality":"inauspicious"},{"name":"Chala","start":"16:50","end":"18:11","startHours":16.8323632691551,"endHours":18.17694390066496,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:11","end":"19:50","startHours":18.17694390066496,"endHours":19.8323632691551,"quality":"inauspicious"},{"name":"Udveg","start":"19:50","end":"21:29","startHours":19.8323632691551,"endHours":21.48778263764524,"quality":"inauspicious"},{"name":"Chala","start":"21:29","end":"23:09","startHours":21.48778263764524,"endHours":23.143202006135382,"quality":"neutral"},{"name":"Labha","start":"23:09","end":"00:48","startHours":23.143202006135382,"endHours":24.798621374625522,"quality":"auspicious"},{"name":"Amṛta","start":"00:48","end":"02:27","startHours":24.798621374625522,"endHours":26.454040743115662,"quality":"auspicious"},{"name":"Kāla","start":"02:27","end":"04:07","startHours":26.454040743115662,"endHours":28.109460111605806,"quality":"inauspicious"},{"name":"Śubha","start":"04:07","end":"05:46","startHours":28.109460111605806,"endHours":29.764879480095946,"quality":"auspicious"},{"name":"Roga","start":"05:46","end":"07:25","startHours":29.764879480095946,"endHours":31.420298848586086,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:25","end":"08:25","startHours":7.420298848586087,"endHours":8.420298848586086,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:25","end":"09:25","startHours":8.420298848586086,"endHours":9.420298848586086,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:25","end":"10:25","startHours":9.420298848586086,"endHours":10.420298848586086,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:25","end":"11:25","startHours":10.420298848586086,"endHours":11.420298848586086,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:25","end":"12:25","startHours":11.420298848586086,"endHours":12.420298848586086,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:25","end":"13:25","startHours":12.420298848586086,"endHours":13.420298848586086,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:25","end":"14:25","startHours":13.420298848586086,"endHours":14.420298848586086,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:25","end":"15:25","startHours":14.420298848586086,"endHours":15.420298848586086,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:25","end":"16:25","startHours":15.420298848586086,"endHours":16.420298848586086,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:25","end":"17:25","startHours":16.420298848586086,"endHours":17.420298848586086,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:25","end":"18:25","startHours":17.420298848586086,"endHours":18.420298848586086,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:25","end":"19:25","startHours":18.420298848586086,"endHours":19.420298848586086,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:25","end":"20:25","startHours":19.420298848586086,"endHours":20.420298848586086,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:25","end":"21:25","startHours":20.420298848586086,"endHours":21.420298848586086,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:25","end":"22:25","startHours":21.420298848586086,"endHours":22.420298848586086,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:25","end":"23:25","startHours":22.420298848586086,"endHours":23.420298848586086,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:25","end":"00:25","startHours":23.420298848586086,"endHours":24.420298848586086,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:25","end":"01:25","startHours":24.420298848586086,"endHours":25.420298848586086,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:25","end":"02:25","startHours":25.420298848586086,"endHours":26.420298848586086,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:25","end":"03:25","startHours":26.420298848586086,"endHours":27.420298848586086,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:25","end":"04:25","startHours":27.420298848586086,"endHours":28.420298848586086,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:25","end":"05:25","startHours":28.420298848586086,"endHours":29.420298848586086,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:25","end":"06:25","startHours":29.420298848586086,"endHours":30.420298848586086,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:25","end":"07:25","startHours":30.420298848586086,"endHours":31.420298848586086,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.42281861549451,"eotMinutes":1.851917522468745,"ayanamsa":23.657}},"calendars":{"vikram_samvat":2042,"vikram_samvatsara":"Bahudhānya","saka_samvat":1907,"saka_samvatsara":"Krodhana","bengali_samvat":1392,"malayalam_era":1161,"nanakshahi_year":516,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Navamī · Vikram 2042 Bahudhānya · Śaka 1907 Krodhana"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","relevance":0.5}]},"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 December 20, 1985 CE · Jamnagar, Gujarat · Vidhyamitra","description":"December 20, 1985 CE for Jamnagar, Gujarat: Śukla Navamī, sūryodaya 07:25, sūryāsta 18:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1985-12-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1985-12-20","sa":"https://sa.vidhyamitra.com/city/jamnagar/1985-12-20","hi":"https://hi.vidhyamitra.com/city/jamnagar/1985-12-20","x-default":"https://vidhyamitra.com/city/jamnagar/1985-12-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T09:06:28.175Z","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":"2026-06-01T09:06:28.175Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T09:06:28.175Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}