{"id":"vidhyamitra:city-day:thane:2170-12-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2170-12-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2170-12-20","date_display":"December 20, 2170 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":2170,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513989.770833,"kali_year":5272,"ahargana":1925524.2708,"sun":{"sidereal_longitude":241.187,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":21.8458,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":140.6588,"elapsed_within_tithi_degrees":8.6588},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":21.8458,"elapsed_within_degrees":8.5124},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.0328},"karana":{"half_tithi_index":23,"name":"Bālava"},"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":2170,"month":12,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2513989.770833,"ahargana":1925524.2708,"kali_year":5272,"ayanamsa_lahiri":26.2413,"grahas":{"sun":{"sidereal_longitude":241.956861,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":23.570160999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":-1.1341},"mars":{"sidereal_longitude":268.45936099999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":224.36236099999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":167.56136100000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":194.867161,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":303.6508610000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":36.4579,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":216.4579,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":2170,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513989.770833,"kali_year":5272,"ahargana":1925524.2708,"sun":{"sidereal_longitude":241.187,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":21.8458,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":140.6588,"elapsed_within_tithi_degrees":8.6588},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":21.8458,"elapsed_within_degrees":8.5124},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.0328},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.134,"elongation":140.659},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.134,"opposition_distance":39.341}},"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":"07:07","sunsetLocal":"18:05","solarNoonLocal":"12:36","dayLengthHours":10.971325576870115,"dayLengthDisplay":"10 Hours 58 Mins 17 Secs","nightLengthDisplay":"13 Hours 01 Mins 43 Secs","moonriseLocal":"15:35","moonsetLocal":"04:31","rahuKala":{"name":"Rāhu Kāla","start":"13:59","end":"15:21","startHours":13.975343738400952,"endHours":15.346759435509718,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:07","end":"08:29","startHours":7.118265252857131,"endHours":8.489680949965894,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:52","end":"11:14","startHours":9.86109664707466,"endHours":11.232512344183423,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:41","end":"10:03","startHours":9.678241220793492,"endHours":10.043952073355829,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.575403818560052,"endHours":7.867972500609922,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:14","end":"12:58","startHours":12.238217188729852,"endHours":12.969638893854526,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:23","startHours":5.655421842607782,"endHours":6.3868435477324565,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:07","startHours":6.203988121451288,"endHours":7.118265252857131,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:10","startHours":14.432482304103875,"endHours":15.163904009228549,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.889590829727247,"endHours":18.289590829727246,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:33","startHours":18.089590829727246,"endHours":18.54672939543017,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.839590829727246,"endHours":19.589590829727246,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:14","end":"00:58","startHours":24.238217188729852,"endHours":24.969638893854526,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:07","end":"08:29","startHours":7.118265252857131,"endHours":8.489680949965894,"quality":"auspicious"},{"name":"Roga","start":"08:29","end":"09:52","startHours":8.489680949965894,"endHours":9.86109664707466,"quality":"inauspicious"},{"name":"Udveg","start":"09:52","end":"11:14","startHours":9.86109664707466,"endHours":11.232512344183423,"quality":"inauspicious"},{"name":"Chala","start":"11:14","end":"12:36","startHours":11.232512344183423,"endHours":12.603928041292189,"quality":"neutral"},{"name":"Labha","start":"12:36","end":"13:59","startHours":12.603928041292189,"endHours":13.975343738400952,"quality":"auspicious"},{"name":"Amṛta","start":"13:59","end":"15:21","startHours":13.975343738400952,"endHours":15.346759435509718,"quality":"auspicious"},{"name":"Kāla","start":"15:21","end":"16:43","startHours":15.346759435509718,"endHours":16.71817513261848,"quality":"inauspicious"},{"name":"Śubha","start":"16:43","end":"18:05","startHours":16.71817513261848,"endHours":18.089590829727246,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:05","end":"19:43","startHours":18.089590829727246,"endHours":19.718175132618484,"quality":"auspicious"},{"name":"Kāla","start":"19:43","end":"21:21","startHours":19.718175132618484,"endHours":21.346759435509718,"quality":"inauspicious"},{"name":"Śubha","start":"21:21","end":"22:59","startHours":21.346759435509718,"endHours":22.97534373840095,"quality":"auspicious"},{"name":"Roga","start":"22:59","end":"00:36","startHours":22.97534373840095,"endHours":24.60392804129219,"quality":"inauspicious"},{"name":"Udveg","start":"00:36","end":"02:14","startHours":24.60392804129219,"endHours":26.232512344183426,"quality":"inauspicious"},{"name":"Chala","start":"02:14","end":"03:52","startHours":26.232512344183426,"endHours":27.86109664707466,"quality":"neutral"},{"name":"Labha","start":"03:52","end":"05:29","startHours":27.86109664707466,"endHours":29.489680949965894,"quality":"auspicious"},{"name":"Amṛta","start":"05:29","end":"07:07","startHours":29.489680949965894,"endHours":31.11826525285713,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:07","end":"08:07","startHours":7.118265252857131,"endHours":8.118265252857132,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:07","end":"09:07","startHours":8.118265252857132,"endHours":9.118265252857132,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:07","end":"10:07","startHours":9.118265252857132,"endHours":10.118265252857132,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:07","end":"11:07","startHours":10.118265252857132,"endHours":11.118265252857132,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:07","end":"12:07","startHours":11.118265252857132,"endHours":12.118265252857132,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:07","end":"13:07","startHours":12.118265252857132,"endHours":13.118265252857132,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:07","end":"14:07","startHours":13.118265252857132,"endHours":14.118265252857132,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:07","end":"15:07","startHours":14.118265252857132,"endHours":15.118265252857132,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:07","end":"16:07","startHours":15.118265252857132,"endHours":16.11826525285713,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:07","end":"17:07","startHours":16.11826525285713,"endHours":17.11826525285713,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:07","end":"18:07","startHours":17.11826525285713,"endHours":18.11826525285713,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:07","end":"19:07","startHours":18.11826525285713,"endHours":19.11826525285713,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:07","end":"20:07","startHours":19.11826525285713,"endHours":20.11826525285713,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:07","end":"21:07","startHours":20.11826525285713,"endHours":21.11826525285713,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:07","end":"22:07","startHours":21.11826525285713,"endHours":22.11826525285713,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:07","end":"23:07","startHours":22.11826525285713,"endHours":23.11826525285713,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:07","end":"00:07","startHours":23.11826525285713,"endHours":24.11826525285713,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:07","end":"01:07","startHours":24.11826525285713,"endHours":25.11826525285713,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:07","end":"02:07","startHours":25.11826525285713,"endHours":26.11826525285713,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:07","end":"03:07","startHours":26.11826525285713,"endHours":27.11826525285713,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:07","end":"04:07","startHours":27.11826525285713,"endHours":28.11826525285713,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:07","end":"05:07","startHours":28.11826525285713,"endHours":29.11826525285713,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:07","end":"06:07","startHours":29.11826525285713,"endHours":30.11826525285713,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:07","end":"07:07","startHours":30.11826525285713,"endHours":31.11826525285713,"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.42421973730682,"eotMinutes":1.851917522468745,"ayanamsa":26.2413}},"calendars":{"vikram_samvat":2227,"vikram_samvatsara":"Subhānu","saka_samvat":2092,"saka_samvatsara":"Pramoda","bengali_samvat":1577,"malayalam_era":1346,"nanakshahi_year":701,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Dvādaśī · Vikram 2227 Subhānu · Śaka 2092 Pramoda"},"festivals":[],"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 December 20, 2170 CE · Thane, Maharashtra · Vidhyamitra","description":"December 20, 2170 CE for Thane, Maharashtra: Śukla Dvādaśī, sūryodaya 07:07, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2170-12-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2170-12-20","sa":"https://sa.vidhyamitra.com/city/thane/2170-12-20","hi":"https://hi.vidhyamitra.com/city/thane/2170-12-20","x-default":"https://vidhyamitra.com/city/thane/2170-12-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T16:12:28.264Z","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":"2026-05-31T16:12:28.264Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T16:12:28.264Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}