{"id":"vidhyamitra:city-day:noida:2017-12-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/noida/2017-12-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-12-20","date_display":"December 20, 2017 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":2017,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458107.770833,"kali_year":5119,"ahargana":1869642.2708,"sun":{"sidereal_longitude":243.8459,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":265.2905,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":21.4446,"elapsed_within_tithi_degrees":9.4446},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":265.2905,"elapsed_within_degrees":11.9572},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.1364},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":2017,"month":12,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458107.770833,"ahargana":1869642.2708,"kali_year":5119,"ayanamsa_lahiri":24.104,"grahas":{"sun":{"sidereal_longitude":244.23096399999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":263.41446399999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false,"latitude":2.3872},"mars":{"sidereal_longitude":192.283364,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":229.33806400000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":200.46466399999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":239.13966400000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":245.72776399999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":117.3551,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":297.3551,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2017,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458107.770833,"kali_year":5119,"ahargana":1869642.2708,"sun":{"sidereal_longitude":243.8459,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":265.2905,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":21.4446,"elapsed_within_tithi_degrees":9.4446},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":265.2905,"elapsed_within_degrees":11.9572},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.1364},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.387,"elongation":21.445},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.387,"opposition_distance":158.555}},"eclipse_window_40days":[]},"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"07:09","sunsetLocal":"17:28","solarNoonLocal":"12:19","dayLengthHours":10.324538156896978,"dayLengthDisplay":"10 Hours 19 Mins 28 Secs","nightLengthDisplay":"13 Hours 40 Mins 32 Secs","moonriseLocal":"08:24","moonsetLocal":"18:47","rahuKala":{"name":"Rāhu Kāla","start":"12:19","end":"13:36","startHours":12.309734707958853,"endHours":13.600301977570975,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:26","end":"09:44","startHours":8.438032899122486,"endHours":9.728600168734609,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:01","end":"12:19","startHours":11.01916743834673,"endHours":12.309734707958853,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:33","end":"09:54","startHours":9.556524532786327,"endHours":9.900675804682892,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:51","startHours":7.577654719381073,"endHours":7.852975736898325,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:39","startHours":11.965583436062287,"endHours":12.653885979855419,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:28","startHours":5.770860541924101,"endHours":6.4591630857172335,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:17","end":"07:09","startHours":6.287087449768951,"endHours":7.147465629510365,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:43","startHours":14.030491067441684,"endHours":14.718793611234815,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.272003786407343,"endHours":17.67200378640734,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:54","startHours":17.472003786407342,"endHours":17.90219287627805,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.222003786407342,"endHours":18.972003786407342,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:39","startHours":23.965583436062285,"endHours":24.65388597985542,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:09","end":"08:26","startHours":7.147465629510365,"endHours":8.438032899122486,"quality":"auspicious"},{"name":"Amṛta","start":"08:26","end":"09:44","startHours":8.438032899122486,"endHours":9.728600168734609,"quality":"auspicious"},{"name":"Kāla","start":"09:44","end":"11:01","startHours":9.728600168734609,"endHours":11.01916743834673,"quality":"inauspicious"},{"name":"Śubha","start":"11:01","end":"12:19","startHours":11.01916743834673,"endHours":12.309734707958853,"quality":"auspicious"},{"name":"Roga","start":"12:19","end":"13:36","startHours":12.309734707958853,"endHours":13.600301977570975,"quality":"inauspicious"},{"name":"Udveg","start":"13:36","end":"14:53","startHours":13.600301977570975,"endHours":14.890869247183097,"quality":"inauspicious"},{"name":"Chala","start":"14:53","end":"16:11","startHours":14.890869247183097,"endHours":16.18143651679522,"quality":"neutral"},{"name":"Labha","start":"16:11","end":"17:28","startHours":16.18143651679522,"endHours":17.472003786407342,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:28","end":"19:11","startHours":17.472003786407342,"endHours":19.18143651679522,"quality":"inauspicious"},{"name":"Chala","start":"19:11","end":"20:53","startHours":19.18143651679522,"endHours":20.890869247183097,"quality":"neutral"},{"name":"Labha","start":"20:53","end":"22:36","startHours":20.890869247183097,"endHours":22.600301977570975,"quality":"auspicious"},{"name":"Amṛta","start":"22:36","end":"00:19","startHours":22.600301977570975,"endHours":24.309734707958853,"quality":"auspicious"},{"name":"Kāla","start":"00:19","end":"02:01","startHours":24.309734707958853,"endHours":26.01916743834673,"quality":"inauspicious"},{"name":"Śubha","start":"02:01","end":"03:44","startHours":26.01916743834673,"endHours":27.72860016873461,"quality":"auspicious"},{"name":"Roga","start":"03:44","end":"05:26","startHours":27.72860016873461,"endHours":29.438032899122486,"quality":"inauspicious"},{"name":"Udveg","start":"05:26","end":"07:09","startHours":29.438032899122486,"endHours":31.147465629510364,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:09","end":"08:09","startHours":7.147465629510365,"endHours":8.147465629510364,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:09","end":"09:09","startHours":8.147465629510364,"endHours":9.147465629510364,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:09","end":"10:09","startHours":9.147465629510364,"endHours":10.147465629510364,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:09","end":"11:09","startHours":10.147465629510364,"endHours":11.147465629510364,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:09","end":"12:09","startHours":11.147465629510364,"endHours":12.147465629510364,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:09","end":"13:09","startHours":12.147465629510364,"endHours":13.147465629510364,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:09","end":"14:09","startHours":13.147465629510364,"endHours":14.147465629510364,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:09","end":"15:09","startHours":14.147465629510364,"endHours":15.147465629510364,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:09","end":"16:09","startHours":15.147465629510364,"endHours":16.147465629510364,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:09","end":"17:09","startHours":16.147465629510364,"endHours":17.147465629510364,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:09","end":"18:09","startHours":17.147465629510364,"endHours":18.147465629510364,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:09","end":"19:09","startHours":18.147465629510364,"endHours":19.147465629510364,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:09","end":"20:09","startHours":19.147465629510364,"endHours":20.147465629510364,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:09","end":"21:09","startHours":20.147465629510364,"endHours":21.147465629510364,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:09","end":"22:09","startHours":21.147465629510364,"endHours":22.147465629510364,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:09","end":"23:09","startHours":22.147465629510364,"endHours":23.147465629510364,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:09","end":"00:09","startHours":23.147465629510364,"endHours":24.147465629510364,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:09","end":"01:09","startHours":24.147465629510364,"endHours":25.147465629510364,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:09","end":"02:09","startHours":25.147465629510364,"endHours":26.147465629510364,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:09","end":"03:09","startHours":26.147465629510364,"endHours":27.147465629510364,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:09","end":"04:09","startHours":27.147465629510364,"endHours":28.147465629510364,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:09","end":"05:09","startHours":28.147465629510364,"endHours":29.147465629510364,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:09","end":"06:09","startHours":29.147465629510364,"endHours":30.147465629510364,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:09","end":"07:09","startHours":30.147465629510364,"endHours":31.147465629510364,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.42601348645807,"eotMinutes":1.851917522468745,"ayanamsa":24.104}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","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":"Pauṣa Śukla Dvitīyā · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[],"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":"noida"},"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, 2017 CE · Noida, Uttar Pradesh · Vidhyamitra","description":"December 20, 2017 CE for Noida, Uttar Pradesh: Śukla Dvitīyā, sūryodaya 07:09, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/noida/2017-12-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/noida/2017-12-20","sa":"https://sa.vidhyamitra.com/city/noida/2017-12-20","hi":"https://hi.vidhyamitra.com/city/noida/2017-12-20","x-default":"https://vidhyamitra.com/city/noida/2017-12-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T03:47:30.043Z","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":"2026-06-01T03:47:30.043Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T03:47:30.043Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}