{"id":"vidhyamitra:city-day:thane:2137-12-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2137-12-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2137-12-20","date_display":"December 20, 2137 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":2137,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501936.770833,"kali_year":5239,"ahargana":1913471.2708,"sun":{"sidereal_longitude":241.7402,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":334.6542,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.914,"elapsed_within_tithi_degrees":8.914},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":334.6542,"elapsed_within_degrees":1.3209},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.3944},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2137,"month":12,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2501936.770833,"ahargana":1913471.2708,"kali_year":5239,"ayanamsa_lahiri":25.7803,"grahas":{"sun":{"sidereal_longitude":242.42717399999992,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":338.202574,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false,"latitude":1.506},"mars":{"sidereal_longitude":137.67857400000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":224.27507400000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":232.35647399999993,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":244.73497399999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":266.59727399999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":315.0838,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":135.0838,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":2137,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501936.770833,"kali_year":5239,"ahargana":1913471.2708,"sun":{"sidereal_longitude":241.7402,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":334.6542,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.914,"elapsed_within_tithi_degrees":8.914},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":334.6542,"elapsed_within_degrees":1.3209},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.3944},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.506,"elongation":92.914},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.506,"opposition_distance":87.086}},"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":10.971318648126726,"dayLengthDisplay":"10 Hours 58 Mins 17 Secs","nightLengthDisplay":"13 Hours 01 Mins 43 Secs","moonriseLocal":"12:55","moonsetLocal":"01:04","rahuKala":{"name":"Rāhu Kāla","start":"11:14","end":"12:36","startHours":11.232513210276348,"endHours":12.603928041292189,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:21","end":"16:43","startHours":15.34675770332387,"endHours":16.71817253433971,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:29","end":"09:52","startHours":8.489683548244667,"endHours":9.861098379260508,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:41","end":"10:03","startHours":9.678243068458396,"endHours":10.043953690062619,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.575406994234107,"endHours":7.867975491517486,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:14","end":"12:58","startHours":12.238217419687965,"endHours":12.969638662896413,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:23","startHours":5.65542623081193,"endHours":6.386847474020378,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:07","startHours":6.203992163218266,"endHours":7.118268717228826,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:10","startHours":14.43248114931331,"endHours":15.163902392521758,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.889587365355553,"endHours":18.28958736535555,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:33","startHours":18.089587365355552,"endHours":18.546725642360833,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.839587365355552,"endHours":19.589587365355552,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:14","end":"00:58","startHours":24.238217419687963,"endHours":24.969638662896415,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:07","end":"08:29","startHours":7.118268717228826,"endHours":8.489683548244667,"quality":"neutral"},{"name":"Labha","start":"08:29","end":"09:52","startHours":8.489683548244667,"endHours":9.861098379260508,"quality":"auspicious"},{"name":"Amṛta","start":"09:52","end":"11:14","startHours":9.861098379260508,"endHours":11.232513210276348,"quality":"auspicious"},{"name":"Kāla","start":"11:14","end":"12:36","startHours":11.232513210276348,"endHours":12.603928041292189,"quality":"inauspicious"},{"name":"Śubha","start":"12:36","end":"13:59","startHours":12.603928041292189,"endHours":13.97534287230803,"quality":"auspicious"},{"name":"Roga","start":"13:59","end":"15:21","startHours":13.97534287230803,"endHours":15.34675770332387,"quality":"inauspicious"},{"name":"Udveg","start":"15:21","end":"16:43","startHours":15.34675770332387,"endHours":16.71817253433971,"quality":"inauspicious"},{"name":"Chala","start":"16:43","end":"18:05","startHours":16.71817253433971,"endHours":18.089587365355552,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:05","end":"19:43","startHours":18.089587365355552,"endHours":19.71817253433971,"quality":"inauspicious"},{"name":"Udveg","start":"19:43","end":"21:21","startHours":19.71817253433971,"endHours":21.34675770332387,"quality":"inauspicious"},{"name":"Chala","start":"21:21","end":"22:59","startHours":21.34675770332387,"endHours":22.97534287230803,"quality":"neutral"},{"name":"Labha","start":"22:59","end":"00:36","startHours":22.97534287230803,"endHours":24.60392804129219,"quality":"auspicious"},{"name":"Amṛta","start":"00:36","end":"02:14","startHours":24.60392804129219,"endHours":26.23251321027635,"quality":"auspicious"},{"name":"Kāla","start":"02:14","end":"03:52","startHours":26.23251321027635,"endHours":27.861098379260508,"quality":"inauspicious"},{"name":"Śubha","start":"03:52","end":"05:29","startHours":27.861098379260508,"endHours":29.489683548244667,"quality":"auspicious"},{"name":"Roga","start":"05:29","end":"07:07","startHours":29.489683548244667,"endHours":31.118268717228826,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:07","end":"08:07","startHours":7.118268717228826,"endHours":8.118268717228826,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:07","end":"09:07","startHours":8.118268717228826,"endHours":9.118268717228826,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:07","end":"10:07","startHours":9.118268717228826,"endHours":10.118268717228826,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:07","end":"11:07","startHours":10.118268717228826,"endHours":11.118268717228826,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:07","end":"12:07","startHours":11.118268717228826,"endHours":12.118268717228826,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:07","end":"13:07","startHours":12.118268717228826,"endHours":13.118268717228826,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:07","end":"14:07","startHours":13.118268717228826,"endHours":14.118268717228826,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:07","end":"15:07","startHours":14.118268717228826,"endHours":15.118268717228826,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:07","end":"16:07","startHours":15.118268717228826,"endHours":16.118268717228826,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:07","end":"17:07","startHours":16.118268717228826,"endHours":17.118268717228826,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:07","end":"18:07","startHours":17.118268717228826,"endHours":18.118268717228826,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:07","end":"19:07","startHours":18.118268717228826,"endHours":19.118268717228826,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:07","end":"20:07","startHours":19.118268717228826,"endHours":20.118268717228826,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:07","end":"21:07","startHours":20.118268717228826,"endHours":21.118268717228826,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:07","end":"22:07","startHours":21.118268717228826,"endHours":22.118268717228826,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:07","end":"23:07","startHours":22.118268717228826,"endHours":23.118268717228826,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:07","end":"00:07","startHours":23.118268717228826,"endHours":24.118268717228826,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:07","end":"01:07","startHours":24.118268717228826,"endHours":25.118268717228826,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:07","end":"02:07","startHours":25.118268717228826,"endHours":26.118268717228826,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:07","end":"03:07","startHours":26.118268717228826,"endHours":27.118268717228826,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:07","end":"04:07","startHours":27.118268717228826,"endHours":28.118268717228826,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:07","end":"05:07","startHours":28.118268717228826,"endHours":29.118268717228826,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:07","end":"06:07","startHours":29.118268717228826,"endHours":30.118268717228826,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:07","end":"07:07","startHours":30.118268717228826,"endHours":31.118268717228826,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","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":-23.42434633683476,"eotMinutes":1.851917522468745,"ayanamsa":25.7803}},"calendars":{"vikram_samvat":2194,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":2059,"saka_samvatsara":"Hemalambī","bengali_samvat":1544,"malayalam_era":1313,"nanakshahi_year":668,"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 Aṣṭamī · Vikram 2194 Sādhāraṇa · Śaka 2059 Hemalambī"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"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, 2137 CE · Thane, Maharashtra · Vidhyamitra","description":"December 20, 2137 CE for Thane, Maharashtra: Śukla Aṣṭamī, sūryodaya 07:07, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2137-12-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2137-12-20","sa":"https://sa.vidhyamitra.com/city/thane/2137-12-20","hi":"https://hi.vidhyamitra.com/city/thane/2137-12-20","x-default":"https://vidhyamitra.com/city/thane/2137-12-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T07:17:34.776Z","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":"2026-06-01T07:17:34.776Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T07:17:34.776Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}