{"id":"vidhyamitra:city-day:rishikesh:1915-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1915-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1915-02-13","date_display":"February 13, 1915 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":1915,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420541.770833,"kali_year":5016,"ahargana":1832076.2708,"sun":{"sidereal_longitude":300.8787,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":288.1681,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.2894,"elapsed_within_tithi_degrees":11.2894},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.1681,"elapsed_within_degrees":8.1681},"yoga":{"number":18,"name":"Varīyān","sum_longitude":229.0467},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1915,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2420541.770833,"ahargana":1832076.2708,"kali_year":5016,"ayanamsa_lahiri":22.6672,"grahas":{"sun":{"sidereal_longitude":300.590562,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":286.30766199999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":-1.5092},"mars":{"sidereal_longitude":289.29306199999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":316.684262,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":310.387962,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":254.99826200000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":63.60986200000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":307.7826,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":127.7826,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"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":1915,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420541.770833,"kali_year":5016,"ahargana":1832076.2708,"sun":{"sidereal_longitude":300.8787,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":288.1681,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.2894,"elapsed_within_tithi_degrees":11.2894},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.1681,"elapsed_within_degrees":8.1681},"yoga":{"number":18,"name":"Varīyān","sum_longitude":229.0467},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.509,"elongation":12.711},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.509,"opposition_distance":167.289}},"eclipse_window_40days":[{"offset_days":1,"type":"solar","occurs":true,"moon_latitude":-0.463,"elongation":0.08},{"offset_days":17,"type":"lunar","occurs":true,"moon_latitude":-1.036,"opposition_distance":2.135}]},"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":"07:00","sunsetLocal":"18:03","solarNoonLocal":"12:32","dayLengthHours":11.045432874993239,"dayLengthDisplay":"11 Hours 02 Mins 44 Secs","nightLengthDisplay":"12 Hours 57 Mins 16 Secs","moonriseLocal":"06:15","moonsetLocal":"16:54","rahuKala":{"name":"Rāhu Kāla","start":"09:46","end":"11:09","startHours":9.76412720226206,"endHours":11.144806311636213,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:54","end":"15:17","startHours":13.906164530384522,"endHours":15.286843639758679,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:00","end":"08:23","startHours":7.002768983513749,"endHours":8.383448092887903,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:57","startHours":9.580036654345506,"endHours":9.948217750178612,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:45","startHours":7.462995353305134,"endHours":7.75754022997162,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.157304325177261,"endHours":12.893666516843478,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:16","startHours":5.530044600181317,"endHours":6.266406791847533,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"07:00","startHours":6.082316243930979,"endHours":7.002768983513749,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.366390900175908,"endHours":15.102753091842123,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:51","end":"18:15","startHours":17.84820185850699,"endHours":18.248201858506988,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:03","end":"18:31","startHours":18.04820185850699,"endHours":18.508428228298374,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:48","end":"19:33","startHours":17.79820185850699,"endHours":19.54820185850699,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.15730432517726,"endHours":24.893666516843478,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:00","end":"08:23","startHours":7.002768983513749,"endHours":8.383448092887903,"quality":"inauspicious"},{"name":"Śubha","start":"08:23","end":"09:46","startHours":8.383448092887903,"endHours":9.76412720226206,"quality":"auspicious"},{"name":"Roga","start":"09:46","end":"11:09","startHours":9.76412720226206,"endHours":11.144806311636213,"quality":"inauspicious"},{"name":"Udveg","start":"11:09","end":"12:32","startHours":11.144806311636213,"endHours":12.52548542101037,"quality":"inauspicious"},{"name":"Chala","start":"12:32","end":"13:54","startHours":12.52548542101037,"endHours":13.906164530384522,"quality":"neutral"},{"name":"Labha","start":"13:54","end":"15:17","startHours":13.906164530384522,"endHours":15.286843639758679,"quality":"auspicious"},{"name":"Amṛta","start":"15:17","end":"16:40","startHours":15.286843639758679,"endHours":16.667522749132832,"quality":"auspicious"},{"name":"Kāla","start":"16:40","end":"18:03","startHours":16.667522749132832,"endHours":18.04820185850699,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:03","end":"19:40","startHours":18.04820185850699,"endHours":19.667522749132836,"quality":"auspicious"},{"name":"Amṛta","start":"19:40","end":"21:17","startHours":19.667522749132836,"endHours":21.28684363975868,"quality":"auspicious"},{"name":"Kāla","start":"21:17","end":"22:54","startHours":21.28684363975868,"endHours":22.906164530384522,"quality":"inauspicious"},{"name":"Śubha","start":"22:54","end":"00:32","startHours":22.906164530384522,"endHours":24.52548542101037,"quality":"auspicious"},{"name":"Roga","start":"00:32","end":"02:09","startHours":24.52548542101037,"endHours":26.144806311636216,"quality":"inauspicious"},{"name":"Udveg","start":"02:09","end":"03:46","startHours":26.144806311636216,"endHours":27.76412720226206,"quality":"inauspicious"},{"name":"Chala","start":"03:46","end":"05:23","startHours":27.76412720226206,"endHours":29.383448092887903,"quality":"neutral"},{"name":"Labha","start":"05:23","end":"07:00","startHours":29.383448092887903,"endHours":31.00276898351375,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:00","end":"08:00","startHours":7.002768983513749,"endHours":8.00276898351375,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:00","end":"09:00","startHours":8.00276898351375,"endHours":9.00276898351375,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:00","end":"10:00","startHours":9.00276898351375,"endHours":10.00276898351375,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:00","end":"11:00","startHours":10.00276898351375,"endHours":11.00276898351375,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:00","end":"12:00","startHours":11.00276898351375,"endHours":12.00276898351375,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:00","end":"13:00","startHours":12.00276898351375,"endHours":13.00276898351375,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:00","end":"14:00","startHours":13.00276898351375,"endHours":14.00276898351375,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:00","end":"15:00","startHours":14.00276898351375,"endHours":15.00276898351375,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:00","end":"16:00","startHours":15.00276898351375,"endHours":16.00276898351375,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:00","end":"17:00","startHours":16.00276898351375,"endHours":17.00276898351375,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:00","end":"18:00","startHours":17.00276898351375,"endHours":18.00276898351375,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:00","end":"19:00","startHours":18.00276898351375,"endHours":19.00276898351375,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:00","end":"20:00","startHours":19.00276898351375,"endHours":20.00276898351375,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:00","end":"21:00","startHours":20.00276898351375,"endHours":21.00276898351375,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:00","end":"22:00","startHours":21.00276898351375,"endHours":22.00276898351375,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:00","end":"23:00","startHours":22.00276898351375,"endHours":23.00276898351375,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:00","end":"00:00","startHours":23.00276898351375,"endHours":24.00276898351375,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:00","end":"01:00","startHours":24.00276898351375,"endHours":25.00276898351375,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:00","end":"02:00","startHours":25.00276898351375,"endHours":26.00276898351375,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:00","end":"03:00","startHours":26.00276898351375,"endHours":27.00276898351375,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:00","end":"04:00","startHours":27.00276898351375,"endHours":28.00276898351375,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:00","end":"05:00","startHours":28.00276898351375,"endHours":29.00276898351375,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:00","end":"06:00","startHours":29.00276898351375,"endHours":30.00276898351375,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:00","end":"07:00","startHours":30.00276898351375,"endHours":31.00276898351375,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.764395934401911,"eotMinutes":-14.599525260622107,"ayanamsa":22.6672}},"calendars":{"vikram_samvat":1972,"vikram_samvatsara":"Vibhava","saka_samvat":1837,"saka_samvatsara":"Rākṣasa","bengali_samvat":1322,"malayalam_era":1091,"nanakshahi_year":446,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Caturdaśī · Vikram 1972 Vibhava · Śaka 1837 Rākṣasa"},"festivals":[{"id":"maha-shivaratri","name":"Mahā Śivarātri","name_sanskrit":"महा शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"The greatest night of Lord Śiva; cosmic dance of dissolution.","vrata":true,"primary_observance":"Strict fast + night-long vigil + 4-yāma pūjā","detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa","lunar_month":"Phālguna"},"precedence":1},{"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":"maha-shivaratri-walk","name":"Mahā Śivarātri Walk","name_sanskrit":"महा शिवरात्रि यात्रा","type":"festival","description":"Śiva-stuti through Bhāgavata + Mahābhārata Anuśāsana.","step_count":12,"url":"/walk/maha-shivaratri-walk"},"reason":"Today is Mahā Śivarātri — its dedicated 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 February 13, 1915 CE · Ṛṣikeśa · Vidhyamitra","description":"February 13, 1915 CE for Ṛṣikeśa: Kṛṣṇa Caturdaśī, sūryodaya 07:00, sūryāsta 18:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1915-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1915-02-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1915-02-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1915-02-13","x-default":"https://vidhyamitra.com/city/rishikesh/1915-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T17:01:57.244Z","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":"2026-05-31T17:01:57.244Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T17:01:57.244Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}