{"id":"vidhyamitra:city-day:rishikesh:1950-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1950-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1950-01-18","date_display":"January 18, 1950 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":1950,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2433299.770833,"kali_year":5051,"ahargana":1844834.2708,"sun":{"sidereal_longitude":274.2577,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":272.2971,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":358.0394,"elapsed_within_tithi_degrees":10.0394},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":272.2971,"elapsed_within_degrees":5.6305},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":186.5548},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1950,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2433299.770833,"ahargana":1844834.2708,"kali_year":5051,"ayanamsa_lahiri":23.1552,"grahas":{"sun":{"sidereal_longitude":274.225512,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":270.4033119999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":-4.4246},"mars":{"sidereal_longitude":165.07161199999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":274.0809119999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":288.36931200000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"venus":{"sidereal_longitude":295.087412,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":146.277712,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":351.8024,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":171.8024,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"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":1950,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2433299.770833,"kali_year":5051,"ahargana":1844834.2708,"sun":{"sidereal_longitude":274.2577,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":272.2971,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":358.0394,"elapsed_within_tithi_degrees":10.0394},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":272.2971,"elapsed_within_degrees":5.6305},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":186.5548},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.425,"elongation":1.961},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.425,"opposition_distance":178.039}},"eclipse_window_40days":[]},"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"sunriseLocal":"07:14","sunsetLocal":"17:41","solarNoonLocal":"12:27","dayLengthHours":10.45584670412525,"dayLengthDisplay":"10 Hours 27 Mins 21 Secs","nightLengthDisplay":"13 Hours 32 Mins 39 Secs","moonriseLocal":"07:01","moonsetLocal":"17:23","rahuKala":{"name":"Rāhu Kāla","start":"12:27","end":"13:46","startHours":12.45464715969483,"endHours":13.761627997710484,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:32","end":"09:50","startHours":8.533704645647859,"endHours":9.840685483663517,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:09","end":"12:27","startHours":11.147666321679171,"endHours":12.45464715969483,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.666421371928095,"endHours":10.014949595398937,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:56","startHours":7.662384086970755,"endHours":7.941206665747429,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:06","end":"12:48","startHours":12.106118936223988,"endHours":12.803175383165671,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:50","end":"06:32","startHours":5.832610913748837,"endHours":6.52966736069052,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:14","startHours":6.355403248955099,"endHours":7.226723807632204,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:54","startHours":14.197288277049037,"endHours":14.89434472399072,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.482570511757455,"endHours":17.882570511757454,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:07","startHours":17.682570511757454,"endHours":18.118230791096007,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.432570511757454,"endHours":19.182570511757454,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:06","end":"00:48","startHours":24.10611893622399,"endHours":24.80317538316567,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:14","end":"08:32","startHours":7.226723807632204,"endHours":8.533704645647859,"quality":"auspicious"},{"name":"Amṛta","start":"08:32","end":"09:50","startHours":8.533704645647859,"endHours":9.840685483663517,"quality":"auspicious"},{"name":"Kāla","start":"09:50","end":"11:09","startHours":9.840685483663517,"endHours":11.147666321679171,"quality":"inauspicious"},{"name":"Śubha","start":"11:09","end":"12:27","startHours":11.147666321679171,"endHours":12.45464715969483,"quality":"auspicious"},{"name":"Roga","start":"12:27","end":"13:46","startHours":12.45464715969483,"endHours":13.761627997710484,"quality":"inauspicious"},{"name":"Udveg","start":"13:46","end":"15:04","startHours":13.761627997710484,"endHours":15.068608835726142,"quality":"inauspicious"},{"name":"Chala","start":"15:04","end":"16:23","startHours":15.068608835726142,"endHours":16.375589673741796,"quality":"neutral"},{"name":"Labha","start":"16:23","end":"17:41","startHours":16.375589673741796,"endHours":17.682570511757454,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:41","end":"19:23","startHours":17.682570511757454,"endHours":19.3755896737418,"quality":"inauspicious"},{"name":"Chala","start":"19:23","end":"21:04","startHours":19.3755896737418,"endHours":21.068608835726142,"quality":"neutral"},{"name":"Labha","start":"21:04","end":"22:46","startHours":21.068608835726142,"endHours":22.761627997710484,"quality":"auspicious"},{"name":"Amṛta","start":"22:46","end":"00:27","startHours":22.761627997710484,"endHours":24.45464715969483,"quality":"auspicious"},{"name":"Kāla","start":"00:27","end":"02:09","startHours":24.45464715969483,"endHours":26.147666321679175,"quality":"inauspicious"},{"name":"Śubha","start":"02:09","end":"03:50","startHours":26.147666321679175,"endHours":27.840685483663517,"quality":"auspicious"},{"name":"Roga","start":"03:50","end":"05:32","startHours":27.840685483663517,"endHours":29.53370464564786,"quality":"inauspicious"},{"name":"Udveg","start":"05:32","end":"07:14","startHours":29.53370464564786,"endHours":31.226723807632204,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.226723807632204,"endHours":8.226723807632204,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.226723807632204,"endHours":9.226723807632204,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.226723807632204,"endHours":10.226723807632204,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.226723807632204,"endHours":11.226723807632204,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.226723807632204,"endHours":12.226723807632204,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.226723807632204,"endHours":13.226723807632204,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.226723807632204,"endHours":14.226723807632204,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.226723807632204,"endHours":15.226723807632204,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.226723807632204,"endHours":16.226723807632204,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.226723807632204,"endHours":17.226723807632204,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.226723807632204,"endHours":18.226723807632204,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.226723807632204,"endHours":19.226723807632204,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.226723807632204,"endHours":20.226723807632204,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.226723807632204,"endHours":21.226723807632204,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.226723807632204,"endHours":22.226723807632204,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.226723807632204,"endHours":23.226723807632204,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.226723807632204,"endHours":24.226723807632204,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.226723807632204,"endHours":25.226723807632204,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.226723807632204,"endHours":26.226723807632204,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.226723807632204,"endHours":27.226723807632204,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.226723807632204,"endHours":28.226723807632204,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.226723807632204,"endHours":29.226723807632204,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.226723807632204,"endHours":30.226723807632204,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.226723807632204,"endHours":31.226723807632204,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.681610954647176,"eotMinutes":-10.349229581689698,"ayanamsa":23.1552}},"calendars":{"vikram_samvat":2007,"vikram_samvatsara":"Śobhana","saka_samvat":1872,"saka_samvatsara":"Vikṛti","bengali_samvat":1357,"malayalam_era":1126,"nanakshahi_year":481,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Amāvasyā · Vikram 2007 Śobhana · Śaka 1872 Vikṛti"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"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":[{"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 18, 1950 CE · Ṛṣikeśa · Vidhyamitra","description":"January 18, 1950 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 07:14, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1950-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1950-01-18","sa":"https://sa.vidhyamitra.com/city/rishikesh/1950-01-18","hi":"https://hi.vidhyamitra.com/city/rishikesh/1950-01-18","x-default":"https://vidhyamitra.com/city/rishikesh/1950-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T20:20:04.097Z","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":"2026-05-21T20:20:04.097Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T20:20:04.097Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}