{"id":"vidhyamitra:city-day:bhavnagar:1981-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/bhavnagar/1981-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-17","date_display":"August 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":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444833.770833,"kali_year":5083,"ahargana":1856368.2708,"sun":{"sidereal_longitude":119.8828,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":316.0319,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.149,"elapsed_within_tithi_degrees":4.149},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":316.0319,"elapsed_within_degrees":9.3652},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.9147},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444833.770833,"ahargana":1856368.2708,"kali_year":5083,"ayanamsa_lahiri":23.5963,"grahas":{"sun":{"sidereal_longitude":120.46202900000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":317.306729,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false,"latitude":-2.6022},"mars":{"sidereal_longitude":86.335329,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":127.63112899999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":165.54132900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":154.83872900000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":163.15772900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":100.6755,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.6755,"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":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444833.770833,"kali_year":5083,"ahargana":1856368.2708,"sun":{"sidereal_longitude":119.8828,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":316.0319,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":196.149,"elapsed_within_tithi_degrees":4.149},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":316.0319,"elapsed_within_degrees":9.3652},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.9147},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.602,"elongation":163.851},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.602,"opposition_distance":16.149}},"eclipse_window_40days":[{"offset_days":-17,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"city":{"slug":"bhavnagar","name":"Bhavnagar, Gujarat","lat":21.7645,"lon":72.1519,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"bhavnagar","name":"Bhavnagar, Gujarat","lat":21.7645,"lon":72.1519,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"sunriseLocal":"06:19","sunsetLocal":"19:11","solarNoonLocal":"12:45","dayLengthHours":12.857066316614848,"dayLengthDisplay":"12 Hours 51 Mins 25 Secs","nightLengthDisplay":"11 Hours 08 Mins 35 Secs","moonriseLocal":"20:02","moonsetLocal":"07:43","rahuKala":{"name":"Rāhu Kāla","start":"07:56","end":"09:32","startHours":7.931033157171398,"endHours":9.538166446748253,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:09","end":"12:45","startHours":11.14529973632511,"endHours":12.752433025901965,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:22","end":"15:58","startHours":14.359566315478823,"endHours":15.966699605055677,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:19","end":"09:45","startHours":9.323882008138007,"endHours":9.7524508853585,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:12","startHours":6.859610964120161,"endHours":7.202466065896557,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:19","end":"13:11","startHours":12.32386414868147,"endHours":13.18100190312246,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:37","end":"05:28","startHours":4.609624358712562,"endHours":5.466762113153552,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:15","end":"06:19","startHours":5.252477674543305,"endHours":6.323899867594542,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:54","end":"15:45","startHours":14.89527741200444,"endHours":15.752415166445429,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:59","end":"19:23","startHours":18.98096618420939,"endHours":19.380966184209388,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:11","end":"19:43","startHours":19.18096618420939,"endHours":19.716677280735006,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:56","end":"20:41","startHours":18.93096618420939,"endHours":20.68096618420939,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:19","end":"01:11","startHours":24.32386414868147,"endHours":25.18100190312246,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:19","end":"07:56","startHours":6.323899867594542,"endHours":7.931033157171398,"quality":"auspicious"},{"name":"Kāla","start":"07:56","end":"09:32","startHours":7.931033157171398,"endHours":9.538166446748253,"quality":"inauspicious"},{"name":"Śubha","start":"09:32","end":"11:09","startHours":9.538166446748253,"endHours":11.14529973632511,"quality":"auspicious"},{"name":"Roga","start":"11:09","end":"12:45","startHours":11.14529973632511,"endHours":12.752433025901965,"quality":"inauspicious"},{"name":"Udveg","start":"12:45","end":"14:22","startHours":12.752433025901965,"endHours":14.359566315478823,"quality":"inauspicious"},{"name":"Chala","start":"14:22","end":"15:58","startHours":14.359566315478823,"endHours":15.966699605055677,"quality":"neutral"},{"name":"Labha","start":"15:58","end":"17:34","startHours":15.966699605055677,"endHours":17.573832894632535,"quality":"auspicious"},{"name":"Amṛta","start":"17:34","end":"19:11","startHours":17.573832894632535,"endHours":19.18096618420939,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:11","end":"20:34","startHours":19.18096618420939,"endHours":20.57383289463253,"quality":"neutral"},{"name":"Labha","start":"20:34","end":"21:58","startHours":20.57383289463253,"endHours":21.966699605055677,"quality":"auspicious"},{"name":"Amṛta","start":"21:58","end":"23:22","startHours":21.966699605055677,"endHours":23.359566315478823,"quality":"auspicious"},{"name":"Kāla","start":"23:22","end":"00:45","startHours":23.359566315478823,"endHours":24.752433025901965,"quality":"inauspicious"},{"name":"Śubha","start":"00:45","end":"02:09","startHours":24.752433025901965,"endHours":26.145299736325107,"quality":"auspicious"},{"name":"Roga","start":"02:09","end":"03:32","startHours":26.145299736325107,"endHours":27.538166446748253,"quality":"inauspicious"},{"name":"Udveg","start":"03:32","end":"04:56","startHours":27.538166446748253,"endHours":28.9310331571714,"quality":"inauspicious"},{"name":"Chala","start":"04:56","end":"06:19","startHours":28.9310331571714,"endHours":30.32389986759454,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:19","end":"07:19","startHours":6.323899867594542,"endHours":7.323899867594542,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:19","end":"08:19","startHours":7.323899867594542,"endHours":8.323899867594541,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:19","end":"09:19","startHours":8.323899867594541,"endHours":9.323899867594541,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:19","end":"10:19","startHours":9.323899867594541,"endHours":10.323899867594541,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:19","end":"11:19","startHours":10.323899867594541,"endHours":11.323899867594541,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:19","end":"12:19","startHours":11.323899867594541,"endHours":12.323899867594541,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:19","end":"13:19","startHours":12.323899867594541,"endHours":13.323899867594541,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:19","end":"14:19","startHours":13.323899867594541,"endHours":14.323899867594541,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:19","end":"15:19","startHours":14.323899867594541,"endHours":15.323899867594541,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:19","end":"16:19","startHours":15.323899867594541,"endHours":16.32389986759454,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:19","end":"17:19","startHours":16.32389986759454,"endHours":17.32389986759454,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:19","end":"18:19","startHours":17.32389986759454,"endHours":18.32389986759454,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:19","end":"19:19","startHours":18.32389986759454,"endHours":19.32389986759454,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:19","end":"20:19","startHours":19.32389986759454,"endHours":20.32389986759454,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:19","end":"21:19","startHours":20.32389986759454,"endHours":21.32389986759454,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:19","end":"22:19","startHours":21.32389986759454,"endHours":22.32389986759454,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:19","end":"23:19","startHours":22.32389986759454,"endHours":23.32389986759454,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:19","end":"00:19","startHours":23.32389986759454,"endHours":24.32389986759454,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:19","end":"01:19","startHours":24.32389986759454,"endHours":25.32389986759454,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:19","end":"02:19","startHours":25.32389986759454,"endHours":26.32389986759454,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:19","end":"03:19","startHours":26.32389986759454,"endHours":27.32389986759454,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:19","end":"04:19","startHours":27.32389986759454,"endHours":28.32389986759454,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:19","end":"05:19","startHours":28.32389986759454,"endHours":29.32389986759454,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:19","end":"06:19","startHours":29.32389986759454,"endHours":30.32389986759454,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.500484072613567,"eotMinutes":-3.7535815541179196,"ayanamsa":23.5963}},"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","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Dvitīyā · 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_ingress":"Siṃha"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"bhavnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 17, 1981 CE · Bhavnagar, Gujarat · Vidhyamitra","description":"August 17, 1981 CE for Bhavnagar, Gujarat: Kṛṣṇa Dvitīyā, sūryodaya 06:19, sūryāsta 19:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/bhavnagar/1981-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/bhavnagar/1981-08-17","sa":"https://sa.vidhyamitra.com/city/bhavnagar/1981-08-17","hi":"https://hi.vidhyamitra.com/city/bhavnagar/1981-08-17","x-default":"https://vidhyamitra.com/city/bhavnagar/1981-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:01:28.510Z","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":"2026-06-02T20:01:28.510Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:01:28.510Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}