{"id":"vidhyamitra:city-day:jamnagar:1983-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1983-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-02-13","date_display":"February 13, 1983 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":1983,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445378.770833,"kali_year":5084,"ahargana":1856913.2708,"sun":{"sidereal_longitude":300.2737,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":301.015,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.7413,"elapsed_within_tithi_degrees":0.7413},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.015,"elapsed_within_degrees":7.6816},"yoga":{"number":19,"name":"Parigha","sum_longitude":241.2886},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":1983,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445378.770833,"ahargana":1856913.2708,"kali_year":5084,"ayanamsa_lahiri":23.6172,"grahas":{"sun":{"sidereal_longitude":300.146306,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":300.300306,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false,"latitude":-3.4058},"mars":{"sidereal_longitude":327.341406,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":274.99250600000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":225.32580600000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":324.440606,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":190.506706,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":71.7988,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":251.7988,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","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":1983,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445378.770833,"kali_year":5084,"ahargana":1856913.2708,"sun":{"sidereal_longitude":300.2737,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":301.015,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.7413,"elapsed_within_tithi_degrees":0.7413},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.015,"elapsed_within_degrees":7.6816},"yoga":{"number":19,"name":"Parigha","sum_longitude":241.2886},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.406,"elongation":0.741},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.406,"opposition_distance":179.259}},"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":"07:24","sunsetLocal":"18:45","solarNoonLocal":"13:04","dayLengthHours":11.35858830011121,"dayLengthDisplay":"11 Hours 21 Mins 31 Secs","nightLengthDisplay":"12 Hours 38 Mins 29 Secs","moonriseLocal":"07:25","moonsetLocal":"18:45","rahuKala":{"name":"Rāhu Kāla","start":"17:20","end":"18:45","startHours":17.33228270021874,"endHours":18.75210623773264,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:04","end":"14:30","startHours":13.072812087677036,"endHours":14.492635625190935,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:55","end":"17:20","startHours":15.912459162704838,"endHours":17.33228270021874,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"10:03","end":"10:25","startHours":10.043855207647379,"endHours":10.422474817651086,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:52","end":"08:10","startHours":7.866792450126064,"endHours":8.169688138129029,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:42","end":"13:27","startHours":12.69419247767333,"endHours":13.451431697680743,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:53","end":"06:38","startHours":5.879039497606603,"endHours":6.636278717614016,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:27","end":"07:24","startHours":6.446968912612163,"endHours":7.39351793762143,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:58","end":"15:43","startHours":14.96591013769557,"endHours":15.723149357702983,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:33","end":"18:57","startHours":18.55210623773264,"endHours":18.95210623773264,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:45","end":"19:14","startHours":18.75210623773264,"endHours":19.225380750237274,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:30","end":"20:15","startHours":18.50210623773264,"endHours":20.25210623773264,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:42","end":"01:27","startHours":24.69419247767333,"endHours":25.451431697680743,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:24","end":"08:49","startHours":7.39351793762143,"endHours":8.813341475135331,"quality":"inauspicious"},{"name":"Chala","start":"08:49","end":"10:14","startHours":8.813341475135331,"endHours":10.233165012649232,"quality":"neutral"},{"name":"Labha","start":"10:14","end":"11:39","startHours":10.233165012649232,"endHours":11.652988550163133,"quality":"auspicious"},{"name":"Amṛta","start":"11:39","end":"13:04","startHours":11.652988550163133,"endHours":13.072812087677036,"quality":"auspicious"},{"name":"Kāla","start":"13:04","end":"14:30","startHours":13.072812087677036,"endHours":14.492635625190935,"quality":"inauspicious"},{"name":"Śubha","start":"14:30","end":"15:55","startHours":14.492635625190935,"endHours":15.912459162704838,"quality":"auspicious"},{"name":"Roga","start":"15:55","end":"17:20","startHours":15.912459162704838,"endHours":17.33228270021874,"quality":"inauspicious"},{"name":"Udveg","start":"17:20","end":"18:45","startHours":17.33228270021874,"endHours":18.75210623773264,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:45","end":"20:20","startHours":18.75210623773264,"endHours":20.332282700218737,"quality":"auspicious"},{"name":"Roga","start":"20:20","end":"21:55","startHours":20.332282700218737,"endHours":21.912459162704838,"quality":"inauspicious"},{"name":"Udveg","start":"21:55","end":"23:30","startHours":21.912459162704838,"endHours":23.492635625190935,"quality":"inauspicious"},{"name":"Chala","start":"23:30","end":"01:04","startHours":23.492635625190935,"endHours":25.072812087677036,"quality":"neutral"},{"name":"Labha","start":"01:04","end":"02:39","startHours":25.072812087677036,"endHours":26.652988550163133,"quality":"auspicious"},{"name":"Amṛta","start":"02:39","end":"04:14","startHours":26.652988550163133,"endHours":28.23316501264923,"quality":"auspicious"},{"name":"Kāla","start":"04:14","end":"05:49","startHours":28.23316501264923,"endHours":29.81334147513533,"quality":"inauspicious"},{"name":"Śubha","start":"05:49","end":"07:24","startHours":29.81334147513533,"endHours":31.393517937621432,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:24","end":"08:24","startHours":7.39351793762143,"endHours":8.39351793762143,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:24","end":"09:24","startHours":8.39351793762143,"endHours":9.39351793762143,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:24","end":"10:24","startHours":9.39351793762143,"endHours":10.39351793762143,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:24","end":"11:24","startHours":10.39351793762143,"endHours":11.39351793762143,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:24","end":"12:24","startHours":11.39351793762143,"endHours":12.39351793762143,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:24","end":"13:24","startHours":12.39351793762143,"endHours":13.39351793762143,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:24","end":"14:24","startHours":13.39351793762143,"endHours":14.39351793762143,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:24","end":"15:24","startHours":14.39351793762143,"endHours":15.39351793762143,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:24","end":"16:24","startHours":15.39351793762143,"endHours":16.393517937621432,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:24","end":"17:24","startHours":16.393517937621432,"endHours":17.393517937621432,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:24","end":"18:24","startHours":17.393517937621432,"endHours":18.393517937621432,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:24","end":"19:24","startHours":18.393517937621432,"endHours":19.393517937621432,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:24","end":"20:24","startHours":19.393517937621432,"endHours":20.393517937621432,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:24","end":"21:24","startHours":20.393517937621432,"endHours":21.393517937621432,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:24","end":"22:24","startHours":21.393517937621432,"endHours":22.393517937621432,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:24","end":"23:24","startHours":22.393517937621432,"endHours":23.393517937621432,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:24","end":"00:24","startHours":23.393517937621432,"endHours":24.393517937621432,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:24","end":"01:24","startHours":24.393517937621432,"endHours":25.393517937621432,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:24","end":"02:24","startHours":25.393517937621432,"endHours":26.393517937621432,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:24","end":"03:24","startHours":26.393517937621432,"endHours":27.393517937621432,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:24","end":"04:24","startHours":27.393517937621432,"endHours":28.393517937621432,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:24","end":"05:24","startHours":28.393517937621432,"endHours":29.393517937621432,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:24","end":"06:24","startHours":29.393517937621432,"endHours":30.393517937621432,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:24","end":"07:24","startHours":30.393517937621432,"endHours":31.393517937621432,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"Gada","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.597955303394594,"eotMinutes":-14.599525260622107,"ayanamsa":23.6172}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Pratipada · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi_ingress":"Kumbha"},"precedence":5}],"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 February 13, 1983 CE · Jamnagar, Gujarat · Vidhyamitra","description":"February 13, 1983 CE for Jamnagar, Gujarat: Śukla Pratipada, sūryodaya 07:24, sūryāsta 18:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1983-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1983-02-13","sa":"https://sa.vidhyamitra.com/city/jamnagar/1983-02-13","hi":"https://hi.vidhyamitra.com/city/jamnagar/1983-02-13","x-default":"https://vidhyamitra.com/city/jamnagar/1983-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:40:50.674Z","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":"2026-06-02T04:40:50.674Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:40:50.674Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}