{"id":"vidhyamitra:city-day:rishikesh:1956-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1956-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1956-12-18","date_display":"December 18, 1956 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":1956,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435825.770833,"kali_year":5058,"ahargana":1847360.2708,"sun":{"sidereal_longitude":242.5974,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":64.5418,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":181.9443,"elapsed_within_tithi_degrees":1.9443},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":64.5418,"elapsed_within_degrees":11.2084},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.1392},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1956,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2435825.770833,"ahargana":1847360.2708,"kali_year":5058,"ayanamsa_lahiri":23.2518,"grahas":{"sun":{"sidereal_longitude":242.84950000000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":66.27779999999996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false,"latitude":-2.0118},"mars":{"sidereal_longitude":343.2729,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":261.83090000000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":157.22109999999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":215.17399999999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":224.8668,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":217.9627,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":37.9627,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":1956,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435825.770833,"kali_year":5058,"ahargana":1847360.2708,"sun":{"sidereal_longitude":242.5974,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":64.5418,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":181.9443,"elapsed_within_tithi_degrees":1.9443},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":64.5418,"elapsed_within_degrees":11.2084},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.1392},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.012,"elongation":178.056},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.012,"opposition_distance":1.944}},"eclipse_window_40days":[{"offset_days":-16,"type":"solar","occurs":true,"moon_latitude":0.432,"elongation":1.882}]},"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":"07:08","sunsetLocal":"17:20","solarNoonLocal":"12:14","dayLengthHours":10.210086647596446,"dayLengthDisplay":"10 Hours 12 Mins 36 Secs","nightLengthDisplay":"13 Hours 47 Mins 24 Secs","moonriseLocal":"17:27","moonsetLocal":"07:29","rahuKala":{"name":"Rāhu Kāla","start":"14:47","end":"16:04","startHours":14.78821953943009,"endHours":16.06448037037965,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:41","end":"10:58","startHours":9.683176215631867,"endHours":10.959437046581423,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:14","end":"13:31","startHours":12.235697877530978,"endHours":13.511958708480535,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:31","end":"09:51","startHours":9.513008104838594,"endHours":9.853344326425141,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:50","startHours":7.556074830715941,"endHours":7.8283438079851795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:35","startHours":11.89536165594443,"endHours":12.576034099117528,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:27","startHours":5.769309667386563,"endHours":6.4499821105596595,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:17","end":"07:08","startHours":6.279813999766385,"endHours":7.1306545537327555,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:37","startHours":13.93737898546372,"endHours":14.618051428636816,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:08","end":"17:32","startHours":17.140741201329202,"endHours":17.5407412013292,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:20","end":"17:46","startHours":17.3407412013292,"endHours":17.766161478312387,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:05","end":"18:50","startHours":17.0907412013292,"endHours":18.8407412013292,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:35","startHours":23.895361655944434,"endHours":24.57603409911753,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:08","end":"08:24","startHours":7.1306545537327555,"endHours":8.40691538468231,"quality":"inauspicious"},{"name":"Udveg","start":"08:24","end":"09:41","startHours":8.40691538468231,"endHours":9.683176215631867,"quality":"inauspicious"},{"name":"Chala","start":"09:41","end":"10:58","startHours":9.683176215631867,"endHours":10.959437046581423,"quality":"neutral"},{"name":"Labha","start":"10:58","end":"12:14","startHours":10.959437046581423,"endHours":12.235697877530978,"quality":"auspicious"},{"name":"Amṛta","start":"12:14","end":"13:31","startHours":12.235697877530978,"endHours":13.511958708480535,"quality":"auspicious"},{"name":"Kāla","start":"13:31","end":"14:47","startHours":13.511958708480535,"endHours":14.78821953943009,"quality":"inauspicious"},{"name":"Śubha","start":"14:47","end":"16:04","startHours":14.78821953943009,"endHours":16.06448037037965,"quality":"auspicious"},{"name":"Roga","start":"16:04","end":"17:20","startHours":16.06448037037965,"endHours":17.3407412013292,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:20","end":"19:04","startHours":17.3407412013292,"endHours":19.064480370379645,"quality":"inauspicious"},{"name":"Śubha","start":"19:04","end":"20:47","startHours":19.064480370379645,"endHours":20.78821953943009,"quality":"auspicious"},{"name":"Roga","start":"20:47","end":"22:31","startHours":20.78821953943009,"endHours":22.511958708480535,"quality":"inauspicious"},{"name":"Udveg","start":"22:31","end":"00:14","startHours":22.511958708480535,"endHours":24.235697877530978,"quality":"inauspicious"},{"name":"Chala","start":"00:14","end":"01:58","startHours":24.235697877530978,"endHours":25.95943704658142,"quality":"neutral"},{"name":"Labha","start":"01:58","end":"03:41","startHours":25.95943704658142,"endHours":27.683176215631867,"quality":"auspicious"},{"name":"Amṛta","start":"03:41","end":"05:24","startHours":27.683176215631867,"endHours":29.40691538468231,"quality":"auspicious"},{"name":"Kāla","start":"05:24","end":"07:08","startHours":29.40691538468231,"endHours":31.130654553732754,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:08","end":"08:08","startHours":7.1306545537327555,"endHours":8.130654553732755,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:08","end":"09:08","startHours":8.130654553732755,"endHours":9.130654553732755,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:08","end":"10:08","startHours":9.130654553732755,"endHours":10.130654553732755,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:08","end":"11:08","startHours":10.130654553732755,"endHours":11.130654553732755,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:08","end":"12:08","startHours":11.130654553732755,"endHours":12.130654553732755,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:08","end":"13:08","startHours":12.130654553732755,"endHours":13.130654553732755,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:08","end":"14:08","startHours":13.130654553732755,"endHours":14.130654553732755,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:08","end":"15:08","startHours":14.130654553732755,"endHours":15.130654553732755,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:08","end":"16:08","startHours":15.130654553732755,"endHours":16.130654553732754,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:08","end":"17:08","startHours":16.130654553732754,"endHours":17.130654553732754,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:08","end":"18:08","startHours":17.130654553732754,"endHours":18.130654553732754,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:08","end":"19:08","startHours":18.130654553732754,"endHours":19.130654553732754,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:08","end":"20:08","startHours":19.130654553732754,"endHours":20.130654553732754,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:08","end":"21:08","startHours":20.130654553732754,"endHours":21.130654553732754,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:08","end":"22:08","startHours":21.130654553732754,"endHours":22.130654553732754,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:08","end":"23:08","startHours":22.130654553732754,"endHours":23.130654553732754,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:08","end":"00:08","startHours":23.130654553732754,"endHours":24.130654553732754,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:08","end":"01:08","startHours":24.130654553732754,"endHours":25.130654553732754,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:08","end":"02:08","startHours":25.130654553732754,"endHours":26.130654553732754,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:08","end":"03:08","startHours":26.130654553732754,"endHours":27.130654553732754,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:08","end":"04:08","startHours":27.130654553732754,"endHours":28.130654553732754,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:08","end":"05:08","startHours":28.130654553732754,"endHours":29.130654553732754,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:08","end":"06:08","startHours":29.130654553732754,"endHours":30.130654553732754,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:08","end":"07:08","startHours":30.130654553732754,"endHours":31.130654553732754,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Mānasa","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":-23.37903420933457,"eotMinutes":2.787727348141232,"ayanamsa":23.2518}},"calendars":{"vikram_samvat":2013,"vikram_samvatsara":"Saumya","saka_samvat":1878,"saka_samvatsara":"Durmukhi","bengali_samvat":1363,"malayalam_era":1132,"nanakshahi_year":487,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","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":"Pauṣa Kṛṣṇa Pratipada · Vikram 2013 Saumya · Śaka 1878 Durmukhi"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 December 18, 1956 CE · Ṛṣikeśa · Vidhyamitra","description":"December 18, 1956 CE for Ṛṣikeśa: Kṛṣṇa Pratipada, sūryodaya 07:08, sūryāsta 17:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1956-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1956-12-18","sa":"https://sa.vidhyamitra.com/city/rishikesh/1956-12-18","hi":"https://hi.vidhyamitra.com/city/rishikesh/1956-12-18","x-default":"https://vidhyamitra.com/city/rishikesh/1956-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:51:38.348Z","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":"2026-05-31T15:51:38.348Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:51:38.348Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}