{"id":"vidhyamitra:city-day:noida:2017-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/noida/2017-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-12-18","date_display":"December 18, 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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458105.770833,"kali_year":5119,"ahargana":1869640.2708,"sun":{"sidereal_longitude":241.7924,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":240.1187,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":358.3263,"elapsed_within_tithi_degrees":10.3263},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":240.1187,"elapsed_within_degrees":0.1187},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":121.9111},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458105.770833,"ahargana":1869640.2708,"kali_year":5119,"ayanamsa_lahiri":24.1039,"grahas":{"sun":{"sidereal_longitude":242.19494099999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":239.74264100000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false,"latitude":3.7875},"mars":{"sidereal_longitude":191.030441,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":230.79324099999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":200.08904099999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":236.62364100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":245.49164100000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":117.4611,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":297.4611,"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":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458105.770833,"kali_year":5119,"ahargana":1869640.2708,"sun":{"sidereal_longitude":241.7924,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":240.1187,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":358.3263,"elapsed_within_tithi_degrees":10.3263},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":240.1187,"elapsed_within_degrees":0.1187},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":121.9111},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.787,"elongation":1.674},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.787,"opposition_distance":178.326}},"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":"07:08","sunsetLocal":"17:27","solarNoonLocal":"12:18","dayLengthHours":10.328137054610572,"dayLengthDisplay":"10 Hours 19 Mins 41 Secs","nightLengthDisplay":"13 Hours 40 Mins 19 Secs","moonriseLocal":"06:59","moonsetLocal":"17:17","rahuKala":{"name":"Rāhu Kāla","start":"08:25","end":"09:43","startHours":8.421086482052015,"endHours":9.712103613878336,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:00","end":"12:18","startHours":11.003120745704656,"endHours":12.294137877530979,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:35","end":"14:53","startHours":13.585155009357301,"endHours":14.876172141183622,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:32","end":"09:53","startHours":9.539967996301492,"endHours":9.88423923145518,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:34","end":"07:50","startHours":7.5604083941677995,"endHours":7.835825382290748,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:38","startHours":11.949866642377293,"endHours":12.638409112684664,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:45","end":"06:26","startHours":5.752984409610949,"endHours":6.441526879918321,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:16","end":"07:08","startHours":6.269391262341478,"endHours":7.130069350225693,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:42","startHours":14.015494053299408,"endHours":14.70403652360678,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:15","end":"17:39","startHours":17.258206404836265,"endHours":17.658206404836264,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:27","end":"17:53","startHours":17.458206404836265,"endHours":17.888545448778373,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:12","end":"18:57","startHours":17.208206404836265,"endHours":18.958206404836265,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:38","startHours":23.949866642377295,"endHours":24.638409112684663,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:08","end":"08:25","startHours":7.130069350225693,"endHours":8.421086482052015,"quality":"auspicious"},{"name":"Kāla","start":"08:25","end":"09:43","startHours":8.421086482052015,"endHours":9.712103613878336,"quality":"inauspicious"},{"name":"Śubha","start":"09:43","end":"11:00","startHours":9.712103613878336,"endHours":11.003120745704656,"quality":"auspicious"},{"name":"Roga","start":"11:00","end":"12:18","startHours":11.003120745704656,"endHours":12.294137877530979,"quality":"inauspicious"},{"name":"Udveg","start":"12:18","end":"13:35","startHours":12.294137877530979,"endHours":13.585155009357301,"quality":"inauspicious"},{"name":"Chala","start":"13:35","end":"14:53","startHours":13.585155009357301,"endHours":14.876172141183622,"quality":"neutral"},{"name":"Labha","start":"14:53","end":"16:10","startHours":14.876172141183622,"endHours":16.167189273009942,"quality":"auspicious"},{"name":"Amṛta","start":"16:10","end":"17:27","startHours":16.167189273009942,"endHours":17.458206404836265,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:27","end":"19:10","startHours":17.458206404836265,"endHours":19.167189273009942,"quality":"neutral"},{"name":"Labha","start":"19:10","end":"20:53","startHours":19.167189273009942,"endHours":20.876172141183623,"quality":"auspicious"},{"name":"Amṛta","start":"20:53","end":"22:35","startHours":20.876172141183623,"endHours":22.5851550093573,"quality":"auspicious"},{"name":"Kāla","start":"22:35","end":"00:18","startHours":22.5851550093573,"endHours":24.29413787753098,"quality":"inauspicious"},{"name":"Śubha","start":"00:18","end":"02:00","startHours":24.29413787753098,"endHours":26.003120745704656,"quality":"auspicious"},{"name":"Roga","start":"02:00","end":"03:43","startHours":26.003120745704656,"endHours":27.712103613878334,"quality":"inauspicious"},{"name":"Udveg","start":"03:43","end":"05:25","startHours":27.712103613878334,"endHours":29.421086482052015,"quality":"inauspicious"},{"name":"Chala","start":"05:25","end":"07:08","startHours":29.421086482052015,"endHours":31.130069350225693,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:08","end":"08:08","startHours":7.130069350225693,"endHours":8.130069350225693,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:08","end":"09:08","startHours":8.130069350225693,"endHours":9.130069350225693,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:08","end":"10:08","startHours":9.130069350225693,"endHours":10.130069350225693,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:08","end":"11:08","startHours":10.130069350225693,"endHours":11.130069350225693,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:08","end":"12:08","startHours":11.130069350225693,"endHours":12.130069350225693,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:08","end":"13:08","startHours":12.130069350225693,"endHours":13.130069350225693,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:08","end":"14:08","startHours":13.130069350225693,"endHours":14.130069350225693,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:08","end":"15:08","startHours":14.130069350225693,"endHours":15.130069350225693,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:08","end":"16:08","startHours":15.130069350225693,"endHours":16.130069350225693,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:08","end":"17:08","startHours":16.130069350225693,"endHours":17.130069350225693,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:08","end":"18:08","startHours":17.130069350225693,"endHours":18.130069350225693,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:08","end":"19:08","startHours":18.130069350225693,"endHours":19.130069350225693,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:08","end":"20:08","startHours":19.130069350225693,"endHours":20.130069350225693,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:08","end":"21:08","startHours":20.130069350225693,"endHours":21.130069350225693,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:08","end":"22:08","startHours":21.130069350225693,"endHours":22.130069350225693,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:08","end":"23:08","startHours":22.130069350225693,"endHours":23.130069350225693,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:08","end":"00:08","startHours":23.130069350225693,"endHours":24.130069350225693,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:08","end":"01:08","startHours":24.130069350225693,"endHours":25.130069350225693,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:08","end":"02:08","startHours":25.130069350225693,"endHours":26.130069350225693,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:08","end":"03:08","startHours":26.130069350225693,"endHours":27.130069350225693,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:08","end":"04:08","startHours":27.130069350225693,"endHours":28.130069350225693,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:08","end":"05:08","startHours":28.130069350225693,"endHours":29.130069350225693,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:08","end":"06:08","startHours":29.130069350225693,"endHours":30.130069350225693,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:08","end":"07:08","startHours":30.130069350225693,"endHours":31.130069350225693,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.384706997067884,"eotMinutes":2.787727348141232,"ayanamsa":24.1039}},"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 Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Amāvasyā · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"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 18, 2017 CE · Noida, Uttar Pradesh · Vidhyamitra","description":"December 18, 2017 CE for Noida, Uttar Pradesh: Kṛṣṇa Amāvasyā, sūryodaya 07:08, sūryāsta 17:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/noida/2017-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/noida/2017-12-18","sa":"https://sa.vidhyamitra.com/city/noida/2017-12-18","hi":"https://hi.vidhyamitra.com/city/noida/2017-12-18","x-default":"https://vidhyamitra.com/city/noida/2017-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T16:49:25.106Z","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":"2026-05-15T16:49:25.106Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T16:49:25.106Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}