{"id":"vidhyamitra:city-day:thane:1979-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1979-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-10-18","date_display":"October 18, 1979 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":1979,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444164.770833,"kali_year":5081,"ahargana":1855699.2708,"sun":{"sidereal_longitude":179.8165,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":144.7217,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.9052,"elapsed_within_tithi_degrees":0.9052},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":144.7217,"elapsed_within_degrees":11.3883},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.5382},"karana":{"half_tithi_index":54,"name":"Gara"},"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":1979,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444164.770833,"ahargana":1855699.2708,"kali_year":5081,"ayanamsa_lahiri":23.5707,"grahas":{"sun":{"sidereal_longitude":180.49618899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":146.74068899999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":0.6722},"mars":{"sidereal_longitude":110.07318900000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":202.210689,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":129.647489,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":194.99308900000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":148.011389,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":136.1224,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":316.1224,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"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":1979,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444164.770833,"kali_year":5081,"ahargana":1855699.2708,"sun":{"sidereal_longitude":179.8165,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":144.7217,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.9052,"elapsed_within_tithi_degrees":0.9052},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":144.7217,"elapsed_within_degrees":11.3883},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.5382},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.672,"elongation":35.095},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.672,"opposition_distance":144.905}},"eclipse_window_40days":[]},"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":"06:32","sunsetLocal":"18:13","solarNoonLocal":"12:23","dayLengthHours":11.681366655988548,"dayLengthDisplay":"11 Hours 40 Mins 53 Secs","nightLengthDisplay":"12 Hours 19 Mins 07 Secs","moonriseLocal":"04:00","moonsetLocal":"16:16","rahuKala":{"name":"Rāhu Kāla","start":"13:50","end":"15:18","startHours":13.838369861944928,"endHours":15.298540693943497,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:32","end":"08:00","startHours":6.537515701952086,"endHours":7.997686533950654,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:27","end":"10:55","startHours":9.457857365949224,"endHours":10.918028197947791,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:16","end":"09:39","startHours":9.263167921682747,"endHours":9.652546810215698,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:01","end":"07:20","startHours":7.024239312618275,"endHours":7.3357424234446365,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:46","startHours":11.988820141413408,"endHours":12.76757791847931,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:46","startHours":4.980000147820279,"endHours":5.758757924886183,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:34","end":"06:32","startHours":5.5640684806197065,"endHours":6.537515701952086,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:06","startHours":14.325093472611119,"endHours":15.103851249677023,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.018882357940633,"endHours":18.418882357940632,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:42","startHours":18.218882357940632,"endHours":18.70560596860682,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.968882357940632,"endHours":19.718882357940632,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:46","startHours":23.988820141413406,"endHours":24.76757791847931,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:32","end":"08:00","startHours":6.537515701952086,"endHours":7.997686533950654,"quality":"auspicious"},{"name":"Roga","start":"08:00","end":"09:27","startHours":7.997686533950654,"endHours":9.457857365949224,"quality":"inauspicious"},{"name":"Udveg","start":"09:27","end":"10:55","startHours":9.457857365949224,"endHours":10.918028197947791,"quality":"inauspicious"},{"name":"Chala","start":"10:55","end":"12:23","startHours":10.918028197947791,"endHours":12.378199029946359,"quality":"neutral"},{"name":"Labha","start":"12:23","end":"13:50","startHours":12.378199029946359,"endHours":13.838369861944928,"quality":"auspicious"},{"name":"Amṛta","start":"13:50","end":"15:18","startHours":13.838369861944928,"endHours":15.298540693943497,"quality":"auspicious"},{"name":"Kāla","start":"15:18","end":"16:46","startHours":15.298540693943497,"endHours":16.758711525942065,"quality":"inauspicious"},{"name":"Śubha","start":"16:46","end":"18:13","startHours":16.758711525942065,"endHours":18.218882357940632,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:13","end":"19:46","startHours":18.218882357940632,"endHours":19.758711525942065,"quality":"auspicious"},{"name":"Kāla","start":"19:46","end":"21:18","startHours":19.758711525942065,"endHours":21.298540693943494,"quality":"inauspicious"},{"name":"Śubha","start":"21:18","end":"22:50","startHours":21.298540693943494,"endHours":22.838369861944926,"quality":"auspicious"},{"name":"Roga","start":"22:50","end":"00:23","startHours":22.838369861944926,"endHours":24.37819902994636,"quality":"inauspicious"},{"name":"Udveg","start":"00:23","end":"01:55","startHours":24.37819902994636,"endHours":25.91802819794779,"quality":"inauspicious"},{"name":"Chala","start":"01:55","end":"03:27","startHours":25.91802819794779,"endHours":27.457857365949224,"quality":"neutral"},{"name":"Labha","start":"03:27","end":"05:00","startHours":27.457857365949224,"endHours":28.997686533950652,"quality":"auspicious"},{"name":"Amṛta","start":"05:00","end":"06:32","startHours":28.997686533950652,"endHours":30.537515701952085,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:32","end":"07:32","startHours":6.537515701952086,"endHours":7.537515701952086,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:32","end":"08:32","startHours":7.537515701952086,"endHours":8.537515701952085,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:32","end":"09:32","startHours":8.537515701952085,"endHours":9.537515701952085,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:32","end":"10:32","startHours":9.537515701952085,"endHours":10.537515701952085,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:32","end":"11:32","startHours":10.537515701952085,"endHours":11.537515701952085,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:32","end":"12:32","startHours":11.537515701952085,"endHours":12.537515701952085,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:32","end":"13:32","startHours":12.537515701952085,"endHours":13.537515701952085,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:32","end":"14:32","startHours":13.537515701952085,"endHours":14.537515701952085,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:32","end":"15:32","startHours":14.537515701952085,"endHours":15.537515701952085,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:32","end":"16:32","startHours":15.537515701952085,"endHours":16.537515701952085,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:32","end":"17:32","startHours":16.537515701952085,"endHours":17.537515701952085,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:32","end":"18:32","startHours":17.537515701952085,"endHours":18.537515701952085,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:32","end":"19:32","startHours":18.537515701952085,"endHours":19.537515701952085,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:32","end":"20:32","startHours":19.537515701952085,"endHours":20.537515701952085,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:32","end":"21:32","startHours":20.537515701952085,"endHours":21.537515701952085,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:32","end":"22:32","startHours":21.537515701952085,"endHours":22.537515701952085,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:32","end":"23:32","startHours":22.537515701952085,"endHours":23.537515701952085,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:32","end":"00:32","startHours":23.537515701952085,"endHours":24.537515701952085,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:32","end":"01:32","startHours":24.537515701952085,"endHours":25.537515701952085,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:32","end":"02:32","startHours":25.537515701952085,"endHours":26.537515701952085,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:32","end":"03:32","startHours":26.537515701952085,"endHours":27.537515701952085,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:32","end":"04:32","startHours":27.537515701952085,"endHours":28.537515701952085,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:32","end":"05:32","startHours":28.537515701952085,"endHours":29.537515701952085,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:32","end":"06:32","startHours":29.537515701952085,"endHours":30.537515701952085,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.334408437265596,"eotMinutes":15.395658203218455,"ayanamsa":23.5707}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Trayodaśī · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"festivals":[{"id":"dhanteras","name":"Dhanteras (Dhanvantari Jayantī)","name_sanskrit":"धनतेरस / धन्वन्तरि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Dhanvantari (Āyurveda-deva, avatāra of Viṣṇu)","significance":"Birth of Dhanvantari from samudra-mathana with amṛta-kalaśa. Day 1 of Diwali.","vrata":true,"detection":{"tithi_number":28,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2,"sources":["Bhāgavata 8.8.32-34"]},{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi_ingress":"Tulā"},"precedence":5},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 18, 1979 CE · Thane, Maharashtra · Vidhyamitra","description":"October 18, 1979 CE for Thane, Maharashtra: Kṛṣṇa Trayodaśī, sūryodaya 06:32, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1979-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1979-10-18","sa":"https://sa.vidhyamitra.com/city/thane/1979-10-18","hi":"https://hi.vidhyamitra.com/city/thane/1979-10-18","x-default":"https://vidhyamitra.com/city/thane/1979-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:21:01.398Z","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":"2026-06-02T13:21:01.398Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:21:01.398Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}