{"id":"vidhyamitra:city-day:thane:1980-01-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1980-01-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-17","date_display":"January 17, 1980 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":1980,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444255.770833,"kali_year":5081,"ahargana":1855790.2708,"sun":{"sidereal_longitude":272.4486,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":259.9836,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.535,"elapsed_within_tithi_degrees":11.535},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":259.9836,"elapsed_within_degrees":6.6503},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.4322},"karana":{"half_tithi_index":57,"name":"Śakuni"},"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":1980,"month":1,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444255.770833,"ahargana":1855790.2708,"kali_year":5081,"ayanamsa_lahiri":23.5742,"grahas":{"sun":{"sidereal_longitude":272.50091199999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":261.187312,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false,"latitude":3.5114},"mars":{"sidereal_longitude":142.049712,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":270.05131200000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":135.70621200000005,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":307.7858120000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":153.17541200000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":131.3008,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":311.3008,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1980,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444255.770833,"kali_year":5081,"ahargana":1855790.2708,"sun":{"sidereal_longitude":272.4486,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":259.9836,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.535,"elapsed_within_tithi_degrees":11.535},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":259.9836,"elapsed_within_degrees":6.6503},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.4322},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.511,"elongation":12.465},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.511,"opposition_distance":167.535}},"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":"07:15","sunsetLocal":"18:21","solarNoonLocal":"12:48","dayLengthHours":11.10528095748374,"dayLengthDisplay":"11 Hours 06 Mins 19 Secs","nightLengthDisplay":"12 Hours 53 Mins 41 Secs","moonriseLocal":"06:34","moonsetLocal":"17:32","rahuKala":{"name":"Rāhu Kāla","start":"14:11","end":"15:35","startHours":14.190054932120614,"endHours":15.57821505180608,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:15","end":"08:38","startHours":7.249254333693274,"endHours":8.637414453378742,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:02","end":"11:25","startHours":10.02557457306421,"endHours":11.413734692749678,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:50","end":"10:13","startHours":9.840486557106146,"endHours":10.210662589022272,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:43","end":"08:00","startHours":7.71197437358843,"endHours":8.00811519912133,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:26","end":"13:10","startHours":12.43171878051902,"endHours":13.172070844351268,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:31","startHours":5.768550206028776,"endHours":6.508902269861025,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:15","startHours":6.323814253902963,"endHours":7.249254333693274,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:24","startHours":14.652774972015768,"endHours":15.393127035848018,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:09","end":"18:33","startHours":18.154535291177016,"endHours":18.554535291177014,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:21","end":"18:49","startHours":18.354535291177015,"endHours":18.81725533107217,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:06","end":"19:51","startHours":18.104535291177015,"endHours":19.854535291177015,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:26","end":"01:10","startHours":24.43171878051902,"endHours":25.172070844351268,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:15","end":"08:38","startHours":7.249254333693274,"endHours":8.637414453378742,"quality":"auspicious"},{"name":"Roga","start":"08:38","end":"10:02","startHours":8.637414453378742,"endHours":10.02557457306421,"quality":"inauspicious"},{"name":"Udveg","start":"10:02","end":"11:25","startHours":10.02557457306421,"endHours":11.413734692749678,"quality":"inauspicious"},{"name":"Chala","start":"11:25","end":"12:48","startHours":11.413734692749678,"endHours":12.801894812435144,"quality":"neutral"},{"name":"Labha","start":"12:48","end":"14:11","startHours":12.801894812435144,"endHours":14.190054932120614,"quality":"auspicious"},{"name":"Amṛta","start":"14:11","end":"15:35","startHours":14.190054932120614,"endHours":15.57821505180608,"quality":"auspicious"},{"name":"Kāla","start":"15:35","end":"16:58","startHours":15.57821505180608,"endHours":16.96637517149155,"quality":"inauspicious"},{"name":"Śubha","start":"16:58","end":"18:21","startHours":16.96637517149155,"endHours":18.354535291177015,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:21","end":"19:58","startHours":18.354535291177015,"endHours":19.96637517149155,"quality":"auspicious"},{"name":"Kāla","start":"19:58","end":"21:35","startHours":19.96637517149155,"endHours":21.57821505180608,"quality":"inauspicious"},{"name":"Śubha","start":"21:35","end":"23:11","startHours":21.57821505180608,"endHours":23.190054932120614,"quality":"auspicious"},{"name":"Roga","start":"23:11","end":"00:48","startHours":23.190054932120614,"endHours":24.801894812435144,"quality":"inauspicious"},{"name":"Udveg","start":"00:48","end":"02:25","startHours":24.801894812435144,"endHours":26.413734692749678,"quality":"inauspicious"},{"name":"Chala","start":"02:25","end":"04:02","startHours":26.413734692749678,"endHours":28.025574573064212,"quality":"neutral"},{"name":"Labha","start":"04:02","end":"05:38","startHours":28.025574573064212,"endHours":29.637414453378742,"quality":"auspicious"},{"name":"Amṛta","start":"05:38","end":"07:15","startHours":29.637414453378742,"endHours":31.249254333693273,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.249254333693274,"endHours":8.249254333693274,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.249254333693274,"endHours":9.249254333693274,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.249254333693274,"endHours":10.249254333693274,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.249254333693274,"endHours":11.249254333693274,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.249254333693274,"endHours":12.249254333693274,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.249254333693274,"endHours":13.249254333693274,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.249254333693274,"endHours":14.249254333693274,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.249254333693274,"endHours":15.249254333693274,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.249254333693274,"endHours":16.249254333693273,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.249254333693273,"endHours":17.249254333693273,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.249254333693273,"endHours":18.249254333693273,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.249254333693273,"endHours":19.249254333693273,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.249254333693273,"endHours":20.249254333693273,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.249254333693273,"endHours":21.249254333693273,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.249254333693273,"endHours":22.249254333693273,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.249254333693273,"endHours":23.249254333693273,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.249254333693273,"endHours":24.249254333693273,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.249254333693273,"endHours":25.249254333693273,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.249254333693273,"endHours":26.249254333693273,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.249254333693273,"endHours":27.249254333693273,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.249254333693273,"endHours":28.249254333693273,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.249254333693273,"endHours":29.249254333693273,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.249254333693273,"endHours":30.249254333693273,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.249254333693273,"endHours":31.249254333693273,"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.931447222159594,"eotMinutes":-10.026088746108654,"ayanamsa":23.5742}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Caturdaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"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":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 17, 1980 CE · Thane, Maharashtra · Vidhyamitra","description":"January 17, 1980 CE for Thane, Maharashtra: Kṛṣṇa Caturdaśī, sūryodaya 07:15, sūryāsta 18:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1980-01-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1980-01-17","sa":"https://sa.vidhyamitra.com/city/thane/1980-01-17","hi":"https://hi.vidhyamitra.com/city/thane/1980-01-17","x-default":"https://vidhyamitra.com/city/thane/1980-01-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T19:07:23.621Z","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":"2026-06-02T19:07:23.621Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T19:07:23.621Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}