{"id":"vidhyamitra:city-day:thane:1981-08-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1981-08-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-12","date_display":"August 12, 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":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444828.770833,"kali_year":5083,"ahargana":1856363.2708,"sun":{"sidereal_longitude":115.1051,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":251.2134,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":136.1084,"elapsed_within_tithi_degrees":4.1084},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":251.2134,"elapsed_within_degrees":11.2134},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":6.3185},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444828.770833,"ahargana":1856363.2708,"kali_year":5083,"ayanamsa_lahiri":23.5961,"grahas":{"sun":{"sidereal_longitude":115.65931999999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":252.31111999999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":2.2297},"mars":{"sidereal_longitude":83.07162,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":117.84042,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":164.64782000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":148.86442,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":162.66832,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":100.9405,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.9405,"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":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444828.770833,"kali_year":5083,"ahargana":1856363.2708,"sun":{"sidereal_longitude":115.1051,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":251.2134,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":136.1084,"elapsed_within_tithi_degrees":4.1084},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":251.2134,"elapsed_within_degrees":11.2134},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":6.3185},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.23,"elongation":136.108},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.23,"opposition_distance":43.892}},"eclipse_window_40days":[{"offset_days":-12,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"06:18","sunsetLocal":"19:08","solarNoonLocal":"12:43","dayLengthHours":12.839342169836181,"dayLengthDisplay":"12 Hours 50 Mins 22 Secs","nightLengthDisplay":"11 Hours 09 Mins 38 Secs","moonriseLocal":"16:21","moonsetLocal":"03:18","rahuKala":{"name":"Rāhu Kāla","start":"12:43","end":"14:19","startHours":12.71378001393072,"endHours":14.318697785160241,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:54","end":"09:30","startHours":7.899026700242151,"endHours":9.503944471471673,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:07","end":"12:43","startHours":11.108862242701196,"endHours":12.71378001393072,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:17","end":"09:43","startHours":9.289955435307737,"endHours":9.71793350763561,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:50","end":"07:10","startHours":6.829081519422469,"endHours":7.171463977284767,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:17","end":"13:09","startHours":12.285801941602847,"endHours":13.141758086258593,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:35","end":"05:26","startHours":4.582196639701137,"endHours":5.438152784356883,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:13","end":"06:18","startHours":5.224163748192947,"endHours":6.294108929012628,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:51","end":"15:43","startHours":14.853670375570083,"endHours":15.709626520225829,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:56","end":"19:20","startHours":18.93345109884881,"endHours":19.33345109884881,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:08","end":"19:40","startHours":19.13345109884881,"endHours":19.66842368925865,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:53","end":"20:38","startHours":18.88345109884881,"endHours":20.63345109884881,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:17","end":"01:09","startHours":24.28580194160285,"endHours":25.14175808625859,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:18","end":"07:54","startHours":6.294108929012628,"endHours":7.899026700242151,"quality":"auspicious"},{"name":"Amṛta","start":"07:54","end":"09:30","startHours":7.899026700242151,"endHours":9.503944471471673,"quality":"auspicious"},{"name":"Kāla","start":"09:30","end":"11:07","startHours":9.503944471471673,"endHours":11.108862242701196,"quality":"inauspicious"},{"name":"Śubha","start":"11:07","end":"12:43","startHours":11.108862242701196,"endHours":12.71378001393072,"quality":"auspicious"},{"name":"Roga","start":"12:43","end":"14:19","startHours":12.71378001393072,"endHours":14.318697785160241,"quality":"inauspicious"},{"name":"Udveg","start":"14:19","end":"15:55","startHours":14.318697785160241,"endHours":15.923615556389764,"quality":"inauspicious"},{"name":"Chala","start":"15:55","end":"17:32","startHours":15.923615556389764,"endHours":17.528533327619286,"quality":"neutral"},{"name":"Labha","start":"17:32","end":"19:08","startHours":17.528533327619286,"endHours":19.13345109884881,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:08","end":"20:32","startHours":19.13345109884881,"endHours":20.528533327619286,"quality":"inauspicious"},{"name":"Chala","start":"20:32","end":"21:55","startHours":20.528533327619286,"endHours":21.923615556389763,"quality":"neutral"},{"name":"Labha","start":"21:55","end":"23:19","startHours":21.923615556389763,"endHours":23.31869778516024,"quality":"auspicious"},{"name":"Amṛta","start":"23:19","end":"00:43","startHours":23.31869778516024,"endHours":24.71378001393072,"quality":"auspicious"},{"name":"Kāla","start":"00:43","end":"02:07","startHours":24.71378001393072,"endHours":26.108862242701196,"quality":"inauspicious"},{"name":"Śubha","start":"02:07","end":"03:30","startHours":26.108862242701196,"endHours":27.503944471471673,"quality":"auspicious"},{"name":"Roga","start":"03:30","end":"04:54","startHours":27.503944471471673,"endHours":28.899026700242153,"quality":"inauspicious"},{"name":"Udveg","start":"04:54","end":"06:18","startHours":28.899026700242153,"endHours":30.29410892901263,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:18","end":"07:18","startHours":6.294108929012628,"endHours":7.294108929012628,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:18","end":"08:18","startHours":7.294108929012628,"endHours":8.294108929012628,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:18","end":"09:18","startHours":8.294108929012628,"endHours":9.294108929012628,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:18","end":"10:18","startHours":9.294108929012628,"endHours":10.294108929012628,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:18","end":"11:18","startHours":10.294108929012628,"endHours":11.294108929012628,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:18","end":"12:18","startHours":11.294108929012628,"endHours":12.294108929012628,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:18","end":"13:18","startHours":12.294108929012628,"endHours":13.294108929012628,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:18","end":"14:18","startHours":13.294108929012628,"endHours":14.294108929012628,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:18","end":"15:18","startHours":14.294108929012628,"endHours":15.294108929012628,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:18","end":"16:18","startHours":15.294108929012628,"endHours":16.29410892901263,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:18","end":"17:18","startHours":16.29410892901263,"endHours":17.29410892901263,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:18","end":"18:18","startHours":17.29410892901263,"endHours":18.29410892901263,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:18","end":"19:18","startHours":18.29410892901263,"endHours":19.29410892901263,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:18","end":"20:18","startHours":19.29410892901263,"endHours":20.29410892901263,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:18","end":"21:18","startHours":20.29410892901263,"endHours":21.29410892901263,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:18","end":"22:18","startHours":21.29410892901263,"endHours":22.29410892901263,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:18","end":"23:18","startHours":22.29410892901263,"endHours":23.29410892901263,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:18","end":"00:18","startHours":23.29410892901263,"endHours":24.29410892901263,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:18","end":"01:18","startHours":24.29410892901263,"endHours":25.29410892901263,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:18","end":"02:18","startHours":25.29410892901263,"endHours":26.29410892901263,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:18","end":"03:18","startHours":26.29410892901263,"endHours":27.29410892901263,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:18","end":"04:18","startHours":27.29410892901263,"endHours":28.29410892901263,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:18","end":"05:18","startHours":28.29410892901263,"endHours":29.29410892901263,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:18","end":"06:18","startHours":29.29410892901263,"endHours":30.29410892901263,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":15.046046417837566,"eotMinutes":-4.739200835843176,"ayanamsa":23.5961}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Dvādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 12, 1981 CE · Thane, Maharashtra · Vidhyamitra","description":"August 12, 1981 CE for Thane, Maharashtra: Śukla Dvādaśī, sūryodaya 06:18, sūryāsta 19:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1981-08-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1981-08-12","sa":"https://sa.vidhyamitra.com/city/thane/1981-08-12","hi":"https://hi.vidhyamitra.com/city/thane/1981-08-12","x-default":"https://vidhyamitra.com/city/thane/1981-08-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T19:13:52.982Z","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":"2026-05-18T19:13:52.982Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T19:13:52.982Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}