{"id":"vidhyamitra:city-day:jamnagar:1981-08-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1981-08-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-20","date_display":"August 20, 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":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444836.770833,"kali_year":5083,"ahargana":1856371.2708,"sun":{"sidereal_longitude":122.7547,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":358.057,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":235.3023,"elapsed_within_tithi_degrees":7.3023},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.057,"elapsed_within_degrees":11.3903},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":120.8116},"karana":{"half_tithi_index":39,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":8,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444836.770833,"ahargana":1856371.2708,"kali_year":5083,"ayanamsa_lahiri":23.5964,"grahas":{"sun":{"sidereal_longitude":123.347914,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":359.423614,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":-4.3938},"mars":{"sidereal_longitude":88.28311400000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":133.23841400000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":166.09251400000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":158.415214,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":163.46201399999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":100.5166,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.5166,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444836.770833,"kali_year":5083,"ahargana":1856371.2708,"sun":{"sidereal_longitude":122.7547,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":358.057,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":235.3023,"elapsed_within_tithi_degrees":7.3023},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.057,"elapsed_within_degrees":11.3903},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":120.8116},"karana":{"half_tithi_index":39,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.394,"elongation":124.698},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.394,"opposition_distance":55.302}},"eclipse_window_40days":[{"offset_days":-20,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"06:28","sunsetLocal":"19:18","solarNoonLocal":"12:53","dayLengthHours":12.826956653428699,"dayLengthDisplay":"12 Hours 49 Mins 37 Secs","nightLengthDisplay":"11 Hours 10 Mins 23 Secs","moonriseLocal":"22:20","moonsetLocal":"10:55","rahuKala":{"name":"Rāhu Kāla","start":"14:29","end":"16:05","startHours":14.483689763520758,"endHours":16.087059345199346,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:28","end":"08:04","startHours":6.4668418551278215,"endHours":8.070211436806408,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:40","end":"11:17","startHours":9.673581018484995,"endHours":11.276950600163584,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:28","end":"09:53","startHours":9.459798407594517,"endHours":9.887363629375475,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:00","end":"07:21","startHours":7.001298382354017,"endHours":7.3433505597787825,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:27","end":"13:18","startHours":12.452754960061215,"endHours":13.307885403623127,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:45","end":"05:37","startHours":4.756580968003995,"endHours":5.611711411565908,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:24","end":"06:28","startHours":5.39792880067543,"endHours":6.4668418551278215,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"15:01","end":"15:52","startHours":15.018146290746953,"endHours":15.873276734308867,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:06","end":"19:30","startHours":19.09379850855652,"endHours":19.49379850855652,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:18","end":"19:50","startHours":19.29379850855652,"endHours":19.828255035782718,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:03","end":"20:48","startHours":19.04379850855652,"endHours":20.79379850855652,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:27","end":"01:18","startHours":24.452754960061217,"endHours":25.30788540362313,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:28","end":"08:04","startHours":6.4668418551278215,"endHours":8.070211436806408,"quality":"auspicious"},{"name":"Roga","start":"08:04","end":"09:40","startHours":8.070211436806408,"endHours":9.673581018484995,"quality":"inauspicious"},{"name":"Udveg","start":"09:40","end":"11:17","startHours":9.673581018484995,"endHours":11.276950600163584,"quality":"inauspicious"},{"name":"Chala","start":"11:17","end":"12:53","startHours":11.276950600163584,"endHours":12.88032018184217,"quality":"neutral"},{"name":"Labha","start":"12:53","end":"14:29","startHours":12.88032018184217,"endHours":14.483689763520758,"quality":"auspicious"},{"name":"Amṛta","start":"14:29","end":"16:05","startHours":14.483689763520758,"endHours":16.087059345199346,"quality":"auspicious"},{"name":"Kāla","start":"16:05","end":"17:41","startHours":16.087059345199346,"endHours":17.690428926877935,"quality":"inauspicious"},{"name":"Śubha","start":"17:41","end":"19:18","startHours":17.690428926877935,"endHours":19.29379850855652,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:18","end":"20:41","startHours":19.29379850855652,"endHours":20.69042892687793,"quality":"auspicious"},{"name":"Kāla","start":"20:41","end":"22:05","startHours":20.69042892687793,"endHours":22.087059345199346,"quality":"inauspicious"},{"name":"Śubha","start":"22:05","end":"23:29","startHours":22.087059345199346,"endHours":23.483689763520758,"quality":"auspicious"},{"name":"Roga","start":"23:29","end":"00:53","startHours":23.483689763520758,"endHours":24.880320181842173,"quality":"inauspicious"},{"name":"Udveg","start":"00:53","end":"02:17","startHours":24.880320181842173,"endHours":26.276950600163584,"quality":"inauspicious"},{"name":"Chala","start":"02:17","end":"03:40","startHours":26.276950600163584,"endHours":27.673581018484995,"quality":"neutral"},{"name":"Labha","start":"03:40","end":"05:04","startHours":27.673581018484995,"endHours":29.07021143680641,"quality":"auspicious"},{"name":"Amṛta","start":"05:04","end":"06:28","startHours":29.07021143680641,"endHours":30.46684185512782,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:28","end":"07:28","startHours":6.4668418551278215,"endHours":7.4668418551278215,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:28","end":"08:28","startHours":7.4668418551278215,"endHours":8.466841855127822,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:28","end":"09:28","startHours":8.466841855127822,"endHours":9.466841855127822,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:28","end":"10:28","startHours":9.466841855127822,"endHours":10.466841855127822,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:28","end":"11:28","startHours":10.466841855127822,"endHours":11.466841855127822,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:28","end":"12:28","startHours":11.466841855127822,"endHours":12.466841855127822,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:28","end":"13:28","startHours":12.466841855127822,"endHours":13.466841855127822,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:28","end":"14:28","startHours":13.466841855127822,"endHours":14.466841855127822,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:28","end":"15:28","startHours":14.466841855127822,"endHours":15.466841855127822,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:28","end":"16:28","startHours":15.466841855127822,"endHours":16.46684185512782,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:28","end":"17:28","startHours":16.46684185512782,"endHours":17.46684185512782,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:28","end":"18:28","startHours":17.46684185512782,"endHours":18.46684185512782,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:28","end":"19:28","startHours":18.46684185512782,"endHours":19.46684185512782,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:28","end":"20:28","startHours":19.46684185512782,"endHours":20.46684185512782,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:28","end":"21:28","startHours":20.46684185512782,"endHours":21.46684185512782,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:28","end":"22:28","startHours":21.46684185512782,"endHours":22.46684185512782,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:28","end":"23:28","startHours":22.46684185512782,"endHours":23.46684185512782,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:28","end":"00:28","startHours":23.46684185512782,"endHours":24.46684185512782,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:28","end":"01:28","startHours":24.46684185512782,"endHours":25.46684185512782,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:28","end":"02:28","startHours":25.46684185512782,"endHours":26.46684185512782,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:28","end":"03:28","startHours":26.46684185512782,"endHours":27.46684185512782,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:28","end":"04:28","startHours":27.46684185512782,"endHours":28.46684185512782,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:28","end":"05:28","startHours":28.46684185512782,"endHours":29.46684185512782,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:28","end":"06:28","startHours":29.46684185512782,"endHours":30.46684185512782,"planetary_lord":"Moon"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":12.529644579509892,"eotMinutes":-3.0500109105302213,"ayanamsa":23.5964}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 August 20, 1981 CE · Jamnagar, Gujarat · Vidhyamitra","description":"August 20, 1981 CE for Jamnagar, Gujarat: Kṛṣṇa Pañcamī, sūryodaya 06:28, sūryāsta 19:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1981-08-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1981-08-20","sa":"https://sa.vidhyamitra.com/city/jamnagar/1981-08-20","hi":"https://hi.vidhyamitra.com/city/jamnagar/1981-08-20","x-default":"https://vidhyamitra.com/city/jamnagar/1981-08-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T14:23:12.423Z","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":"2026-05-18T14:23:12.423Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T14:23:12.423Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}