{"id":"vidhyamitra:city-day:rishikesh:1931-03-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1931-03-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1931-03-18","date_display":"March 18, 1931 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":1931,"month":3,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426418.770833,"kali_year":5032,"ahargana":1837953.2708,"sun":{"sidereal_longitude":333.9314,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":319.651,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":345.7197,"elapsed_within_tithi_degrees":9.7197},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":319.651,"elapsed_within_degrees":12.9844},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.5824},"karana":{"half_tithi_index":57,"name":"Śakuni"},"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":1931,"month":3,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2426418.770833,"ahargana":1837953.2708,"kali_year":5032,"ayanamsa_lahiri":22.892,"grahas":{"sun":{"sidereal_longitude":333.59331699999996,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":319.68931699999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false,"latitude":-2.69},"mars":{"sidereal_longitude":96.032217,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":336.43981699999995,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":78.406317,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":292.014317,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":269.044317,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":356.3909,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":176.3909,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":1931,"month":3,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426418.770833,"kali_year":5032,"ahargana":1837953.2708,"sun":{"sidereal_longitude":333.9314,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":319.651,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":345.7197,"elapsed_within_tithi_degrees":9.7197},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":319.651,"elapsed_within_degrees":12.9844},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.5824},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.69,"elongation":14.28},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.69,"opposition_distance":165.72}},"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":"06:25","sunsetLocal":"18:26","solarNoonLocal":"12:26","dayLengthHours":12.020442665140106,"dayLengthDisplay":"12 Hours 01 Mins 14 Secs","nightLengthDisplay":"11 Hours 58 Mins 46 Secs","moonriseLocal":"05:43","moonsetLocal":"17:17","rahuKala":{"name":"Rāhu Kāla","start":"12:26","end":"13:56","startHours":12.428224900658549,"endHours":13.930780233801062,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:55","end":"09:25","startHours":7.92055890123101,"endHours":9.423114234373523,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:56","end":"12:26","startHours":10.925669567516035,"endHours":12.428224900658549,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:37","startHours":9.222773523287856,"endHours":9.62345494545919,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:55","end":"07:14","startHours":6.918855345802668,"endHours":7.239400483539738,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:50","startHours":12.027543478487214,"endHours":12.828906322829887,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:49","end":"05:37","startHours":4.815277879403149,"endHours":5.616640723745823,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:25","end":"06:25","startHours":5.416300012660155,"endHours":6.418003568088497,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:14","startHours":14.431632011515234,"endHours":15.232994855857907,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.238446233228604,"endHours":18.638446233228603,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:56","startHours":18.438446233228603,"endHours":18.939298010942775,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.188446233228603,"endHours":19.938446233228603,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:50","startHours":24.02754347848721,"endHours":24.828906322829887,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:25","end":"07:55","startHours":6.418003568088497,"endHours":7.92055890123101,"quality":"auspicious"},{"name":"Amṛta","start":"07:55","end":"09:25","startHours":7.92055890123101,"endHours":9.423114234373523,"quality":"auspicious"},{"name":"Kāla","start":"09:25","end":"10:56","startHours":9.423114234373523,"endHours":10.925669567516035,"quality":"inauspicious"},{"name":"Śubha","start":"10:56","end":"12:26","startHours":10.925669567516035,"endHours":12.428224900658549,"quality":"auspicious"},{"name":"Roga","start":"12:26","end":"13:56","startHours":12.428224900658549,"endHours":13.930780233801062,"quality":"inauspicious"},{"name":"Udveg","start":"13:56","end":"15:26","startHours":13.930780233801062,"endHours":15.433335566943576,"quality":"inauspicious"},{"name":"Chala","start":"15:26","end":"16:56","startHours":15.433335566943576,"endHours":16.93589090008609,"quality":"neutral"},{"name":"Labha","start":"16:56","end":"18:26","startHours":16.93589090008609,"endHours":18.438446233228603,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:26","end":"19:56","startHours":18.438446233228603,"endHours":19.93589090008609,"quality":"inauspicious"},{"name":"Chala","start":"19:56","end":"21:26","startHours":19.93589090008609,"endHours":21.433335566943576,"quality":"neutral"},{"name":"Labha","start":"21:26","end":"22:56","startHours":21.433335566943576,"endHours":22.930780233801066,"quality":"auspicious"},{"name":"Amṛta","start":"22:56","end":"00:26","startHours":22.930780233801066,"endHours":24.42822490065855,"quality":"auspicious"},{"name":"Kāla","start":"00:26","end":"01:56","startHours":24.42822490065855,"endHours":25.92566956751604,"quality":"inauspicious"},{"name":"Śubha","start":"01:56","end":"03:25","startHours":25.92566956751604,"endHours":27.423114234373525,"quality":"auspicious"},{"name":"Roga","start":"03:25","end":"04:55","startHours":27.423114234373525,"endHours":28.92055890123101,"quality":"inauspicious"},{"name":"Udveg","start":"04:55","end":"06:25","startHours":28.92055890123101,"endHours":30.418003568088498,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.418003568088497,"endHours":7.418003568088497,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.418003568088497,"endHours":8.418003568088498,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.418003568088498,"endHours":9.418003568088498,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.418003568088498,"endHours":10.418003568088498,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.418003568088498,"endHours":11.418003568088498,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.418003568088498,"endHours":12.418003568088498,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.418003568088498,"endHours":13.418003568088498,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.418003568088498,"endHours":14.418003568088498,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.418003568088498,"endHours":15.418003568088498,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.418003568088498,"endHours":16.418003568088498,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.418003568088498,"endHours":17.418003568088498,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.418003568088498,"endHours":18.418003568088498,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.418003568088498,"endHours":19.418003568088498,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.418003568088498,"endHours":20.418003568088498,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.418003568088498,"endHours":21.418003568088498,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.418003568088498,"endHours":22.418003568088498,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.418003568088498,"endHours":23.418003568088498,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.418003568088498,"endHours":24.418003568088498,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.418003568088498,"endHours":25.418003568088498,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.418003568088498,"endHours":26.418003568088498,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.418003568088498,"endHours":27.418003568088498,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.418003568088498,"endHours":28.418003568088498,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.418003568088498,"endHours":29.418003568088498,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.418003568088498,"endHours":30.418003568088498,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-1.3971654438202554,"eotMinutes":-8.763894039513033,"ayanamsa":22.892}},"calendars":{"vikram_samvat":1988,"vikram_samvatsara":"Tāraṇa","saka_samvat":1853,"saka_samvatsara":"Prajāpati","bengali_samvat":1338,"malayalam_era":1107,"nanakshahi_year":462,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Caturdaśī · Vikram 1988 Tāraṇa · Śaka 1853 Prajāpati"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga March 18, 1931 CE · Ṛṣikeśa · Vidhyamitra","description":"March 18, 1931 CE for Ṛṣikeśa: Kṛṣṇa Caturdaśī, sūryodaya 06:25, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1931-03-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1931-03-18","sa":"https://sa.vidhyamitra.com/city/rishikesh/1931-03-18","hi":"https://hi.vidhyamitra.com/city/rishikesh/1931-03-18","x-default":"https://vidhyamitra.com/city/rishikesh/1931-03-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T16:47:06.048Z","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":"2026-05-31T16:47:06.048Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T16:47:06.048Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}