{"id":"vidhyamitra:city-day:bhavnagar:1981-05-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/bhavnagar/1981-05-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-07","date_display":"May 7, 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":5,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444731.770833,"kali_year":5083,"ahargana":1856266.2708,"sun":{"sidereal_longitude":22.8843,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":60.979,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.0946,"elapsed_within_tithi_degrees":2.0946},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":60.979,"elapsed_within_degrees":7.6456},"yoga":{"number":7,"name":"Sukarma","sum_longitude":83.8633},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":5,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444731.770833,"ahargana":1856266.2708,"kali_year":5083,"ayanamsa_lahiri":23.5924,"grahas":{"sun":{"sidereal_longitude":22.812926000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":63.190426,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false,"latitude":-3.186},"mars":{"sidereal_longitude":15.407925999999975,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":33.87192600000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":157.64612599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":30.800926000000004,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":159.87002600000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":106.08,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":286.08,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":5,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444731.770833,"kali_year":5083,"ahargana":1856266.2708,"sun":{"sidereal_longitude":22.8843,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":60.979,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.0946,"elapsed_within_tithi_degrees":2.0946},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":60.979,"elapsed_within_degrees":7.6456},"yoga":{"number":7,"name":"Sukarma","sum_longitude":83.8633},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.186,"elongation":38.095},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.186,"opposition_distance":141.905}},"eclipse_window_40days":[]},"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":"06:07","sunsetLocal":"19:09","solarNoonLocal":"12:38","dayLengthHours":13.045607715934416,"dayLengthDisplay":"13 Hours 02 Mins 44 Secs","nightLengthDisplay":"10 Hours 57 Mins 16 Secs","moonriseLocal":"08:37","moonsetLocal":"22:02","rahuKala":{"name":"Rāhu Kāla","start":"14:16","end":"15:54","startHours":14.262046621041705,"endHours":15.892747585533506,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:07","end":"07:44","startHours":6.108541798582695,"endHours":7.739242763074497,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:22","end":"11:00","startHours":9.369943727566298,"endHours":11.000644692058101,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:09","end":"09:35","startHours":9.152516932300726,"endHours":9.587370522831872,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:39","end":"07:00","startHours":6.652108786746629,"endHours":6.999991659171546,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:12","end":"13:04","startHours":12.196492066018756,"endHours":13.066199247081052,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:22","end":"05:14","startHours":4.369127436458106,"endHours":5.238834617520401,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:01","end":"06:07","startHours":5.021407822254827,"endHours":6.108541798582695,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:48","end":"15:41","startHours":14.80561360920564,"endHours":15.675320790267934,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.954149514517113,"endHours":19.35414951451711,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:42","startHours":19.154149514517112,"endHours":19.697716502681047,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.904149514517112,"endHours":20.654149514517112,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:12","end":"01:04","startHours":24.196492066018756,"endHours":25.06619924708105,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:07","end":"07:44","startHours":6.108541798582695,"endHours":7.739242763074497,"quality":"auspicious"},{"name":"Roga","start":"07:44","end":"09:22","startHours":7.739242763074497,"endHours":9.369943727566298,"quality":"inauspicious"},{"name":"Udveg","start":"09:22","end":"11:00","startHours":9.369943727566298,"endHours":11.000644692058101,"quality":"inauspicious"},{"name":"Chala","start":"11:00","end":"12:38","startHours":11.000644692058101,"endHours":12.631345656549904,"quality":"neutral"},{"name":"Labha","start":"12:38","end":"14:16","startHours":12.631345656549904,"endHours":14.262046621041705,"quality":"auspicious"},{"name":"Amṛta","start":"14:16","end":"15:54","startHours":14.262046621041705,"endHours":15.892747585533506,"quality":"auspicious"},{"name":"Kāla","start":"15:54","end":"17:31","startHours":15.892747585533506,"endHours":17.52344855002531,"quality":"inauspicious"},{"name":"Śubha","start":"17:31","end":"19:09","startHours":17.52344855002531,"endHours":19.154149514517112,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:09","end":"20:31","startHours":19.154149514517112,"endHours":20.52344855002531,"quality":"auspicious"},{"name":"Kāla","start":"20:31","end":"21:54","startHours":20.52344855002531,"endHours":21.892747585533506,"quality":"inauspicious"},{"name":"Śubha","start":"21:54","end":"23:16","startHours":21.892747585533506,"endHours":23.262046621041705,"quality":"auspicious"},{"name":"Roga","start":"23:16","end":"00:38","startHours":23.262046621041705,"endHours":24.631345656549904,"quality":"inauspicious"},{"name":"Udveg","start":"00:38","end":"02:00","startHours":24.631345656549904,"endHours":26.000644692058103,"quality":"inauspicious"},{"name":"Chala","start":"02:00","end":"03:22","startHours":26.000644692058103,"endHours":27.3699437275663,"quality":"neutral"},{"name":"Labha","start":"03:22","end":"04:44","startHours":27.3699437275663,"endHours":28.739242763074497,"quality":"auspicious"},{"name":"Amṛta","start":"04:44","end":"06:07","startHours":28.739242763074497,"endHours":30.108541798582696,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.108541798582695,"endHours":7.108541798582695,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.108541798582695,"endHours":8.108541798582696,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.108541798582696,"endHours":9.108541798582696,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.108541798582696,"endHours":10.108541798582696,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.108541798582696,"endHours":11.108541798582696,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.108541798582696,"endHours":12.108541798582696,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.108541798582696,"endHours":13.108541798582696,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.108541798582696,"endHours":14.108541798582696,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.108541798582696,"endHours":15.108541798582696,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.108541798582696,"endHours":16.108541798582696,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.108541798582696,"endHours":17.108541798582696,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.108541798582696,"endHours":18.108541798582696,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.108541798582696,"endHours":19.108541798582696,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.108541798582696,"endHours":20.108541798582696,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.108541798582696,"endHours":21.108541798582696,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.108541798582696,"endHours":22.108541798582696,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.108541798582696,"endHours":23.108541798582696,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.108541798582696,"endHours":24.108541798582696,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.108541798582696,"endHours":25.108541798582696,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.108541798582696,"endHours":26.108541798582696,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.108541798582696,"endHours":27.108541798582696,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.108541798582696,"endHours":28.108541798582696,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.108541798582696,"endHours":29.108541798582696,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.108541798582696,"endHours":30.108541798582696,"planetary_lord":"Moon"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":16.741377077756432,"eotMinutes":3.5116606070058483,"ayanamsa":23.5924}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":"bhavnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 7, 1981 CE · Bhavnagar, Gujarat · Vidhyamitra","description":"May 7, 1981 CE for Bhavnagar, Gujarat: Śukla Caturthī, sūryodaya 06:07, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/bhavnagar/1981-05-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/bhavnagar/1981-05-07","sa":"https://sa.vidhyamitra.com/city/bhavnagar/1981-05-07","hi":"https://hi.vidhyamitra.com/city/bhavnagar/1981-05-07","x-default":"https://vidhyamitra.com/city/bhavnagar/1981-05-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:02:41.133Z","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":"2026-06-02T13:02:41.133Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:02:41.133Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}