{"id":"vidhyamitra:city-day:rishikesh:1912-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1912-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1912-02-13","date_display":"February 13, 1912 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":1912,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419445.770833,"kali_year":5013,"ahargana":1830980.2708,"sun":{"sidereal_longitude":300.6514,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":241.4456,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":300.7942,"elapsed_within_tithi_degrees":0.7942},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.4456,"elapsed_within_degrees":1.4456},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0969},"karana":{"half_tithi_index":50,"name":"Bava"},"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":1912,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2419445.770833,"ahargana":1830980.2708,"kali_year":5013,"ayanamsa_lahiri":22.6253,"grahas":{"sun":{"sidereal_longitude":300.3575370000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":243.45423700000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false,"latitude":-3.7114},"mars":{"sidereal_longitude":43.395636999999965,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":287.951637,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":230.773237,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":265.685837,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":22.356037000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":5.854,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":185.854,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","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":1912,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419445.770833,"kali_year":5013,"ahargana":1830980.2708,"sun":{"sidereal_longitude":300.6514,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":241.4456,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":300.7942,"elapsed_within_tithi_degrees":0.7942},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.4456,"elapsed_within_degrees":1.4456},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0969},"karana":{"half_tithi_index":50,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.711,"elongation":59.206},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.711,"opposition_distance":120.794}},"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":"07:00","sunsetLocal":"18:03","solarNoonLocal":"12:32","dayLengthHours":11.038047696226911,"dayLengthDisplay":"11 Hours 02 Mins 17 Secs","nightLengthDisplay":"12 Hours 57 Mins 43 Secs","moonriseLocal":"03:39","moonsetLocal":"13:49","rahuKala":{"name":"Rāhu Kāla","start":"15:17","end":"16:40","startHours":15.284997345067097,"endHours":16.664753307095463,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:46","end":"11:09","startHours":9.765973496953642,"endHours":11.145729458982007,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:32","end":"13:54","startHours":12.52548542101037,"endHours":13.905241383038735,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:57","startHours":9.58200603534986,"endHours":9.949940958557423,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:46","startHours":7.466380226906369,"endHours":7.76072816547242,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.157550497802806,"endHours":12.893420344217933,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:16","startHours":5.53472188006666,"endHours":6.270591726481787,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"07:00","startHours":6.086624264878005,"endHours":7.006461572896915,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.365160037048188,"endHours":15.101029883463315,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:51","end":"18:15","startHours":17.844509269123826,"endHours":18.244509269123824,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:03","end":"18:30","startHours":18.044509269123825,"endHours":18.504427923133278,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:48","end":"19:33","startHours":17.794509269123825,"endHours":19.544509269123825,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.157550497802806,"endHours":24.893420344217933,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:00","end":"08:23","startHours":7.006461572896915,"endHours":8.38621753492528,"quality":"inauspicious"},{"name":"Udveg","start":"08:23","end":"09:46","startHours":8.38621753492528,"endHours":9.765973496953642,"quality":"inauspicious"},{"name":"Chala","start":"09:46","end":"11:09","startHours":9.765973496953642,"endHours":11.145729458982007,"quality":"neutral"},{"name":"Labha","start":"11:09","end":"12:32","startHours":11.145729458982007,"endHours":12.52548542101037,"quality":"auspicious"},{"name":"Amṛta","start":"12:32","end":"13:54","startHours":12.52548542101037,"endHours":13.905241383038735,"quality":"auspicious"},{"name":"Kāla","start":"13:54","end":"15:17","startHours":13.905241383038735,"endHours":15.284997345067097,"quality":"inauspicious"},{"name":"Śubha","start":"15:17","end":"16:40","startHours":15.284997345067097,"endHours":16.664753307095463,"quality":"auspicious"},{"name":"Roga","start":"16:40","end":"18:03","startHours":16.664753307095463,"endHours":18.044509269123825,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:03","end":"19:40","startHours":18.044509269123825,"endHours":19.66475330709546,"quality":"inauspicious"},{"name":"Śubha","start":"19:40","end":"21:17","startHours":19.66475330709546,"endHours":21.284997345067097,"quality":"auspicious"},{"name":"Roga","start":"21:17","end":"22:54","startHours":21.284997345067097,"endHours":22.905241383038735,"quality":"inauspicious"},{"name":"Udveg","start":"22:54","end":"00:32","startHours":22.905241383038735,"endHours":24.52548542101037,"quality":"inauspicious"},{"name":"Chala","start":"00:32","end":"02:09","startHours":24.52548542101037,"endHours":26.145729458982004,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:46","startHours":26.145729458982004,"endHours":27.76597349695364,"quality":"auspicious"},{"name":"Amṛta","start":"03:46","end":"05:23","startHours":27.76597349695364,"endHours":29.38621753492528,"quality":"auspicious"},{"name":"Kāla","start":"05:23","end":"07:00","startHours":29.38621753492528,"endHours":31.006461572896914,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:00","end":"08:00","startHours":7.006461572896915,"endHours":8.006461572896914,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:00","end":"09:00","startHours":8.006461572896914,"endHours":9.006461572896914,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:00","end":"10:00","startHours":9.006461572896914,"endHours":10.006461572896914,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:00","end":"11:00","startHours":10.006461572896914,"endHours":11.006461572896914,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:00","end":"12:00","startHours":11.006461572896914,"endHours":12.006461572896914,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:00","end":"13:00","startHours":12.006461572896914,"endHours":13.006461572896914,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:00","end":"14:00","startHours":13.006461572896914,"endHours":14.006461572896914,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:00","end":"15:00","startHours":14.006461572896914,"endHours":15.006461572896914,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:00","end":"16:00","startHours":15.006461572896914,"endHours":16.006461572896914,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:00","end":"17:00","startHours":16.006461572896914,"endHours":17.006461572896914,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:00","end":"18:00","startHours":17.006461572896914,"endHours":18.006461572896914,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:00","end":"19:00","startHours":18.006461572896914,"endHours":19.006461572896914,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:00","end":"20:00","startHours":19.006461572896914,"endHours":20.006461572896914,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:00","end":"21:00","startHours":20.006461572896914,"endHours":21.006461572896914,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:00","end":"22:00","startHours":21.006461572896914,"endHours":22.006461572896914,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:00","end":"23:00","startHours":22.006461572896914,"endHours":23.006461572896914,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:00","end":"00:00","startHours":23.006461572896914,"endHours":24.006461572896914,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:00","end":"01:00","startHours":24.006461572896914,"endHours":25.006461572896914,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:00","end":"02:00","startHours":25.006461572896914,"endHours":26.006461572896914,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:00","end":"03:00","startHours":26.006461572896914,"endHours":27.006461572896914,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:00","end":"04:00","startHours":27.006461572896914,"endHours":28.006461572896914,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:00","end":"05:00","startHours":28.006461572896914,"endHours":29.006461572896914,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:00","end":"06:00","startHours":29.006461572896914,"endHours":30.006461572896914,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:00","end":"07:00","startHours":30.006461572896914,"endHours":31.006461572896914,"planetary_lord":"Saturn"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.854465367219108,"eotMinutes":-14.599525260622107,"ayanamsa":22.6253}},"calendars":{"vikram_samvat":1969,"vikram_samvatsara":"Krodhana","saka_samvat":1834,"saka_samvatsara":"Paridhāvi","bengali_samvat":1319,"malayalam_era":1088,"nanakshahi_year":443,"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 Ekādaśī · Vikram 1969 Krodhana · Śaka 1834 Paridhāvi"},"festivals":[{"id":"vijaya-ekadashi","name":"Vijayā Ekādaśī","name_sanskrit":"विजया एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Rāma","significance":"Rāma observed this before crossing the ocean to Laṅkā.","vrata":true,"detection":{"tithi_number":26,"tithi_paksha":"Kṛṣṇa","lunar_month":"Phālguna"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"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 February 13, 1912 CE · Ṛṣikeśa · Vidhyamitra","description":"February 13, 1912 CE for Ṛṣikeśa: Kṛṣṇa Ekādaśī, sūryodaya 07:00, sūryāsta 18:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1912-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1912-02-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1912-02-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1912-02-13","x-default":"https://vidhyamitra.com/city/rishikesh/1912-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T22:08:11.829Z","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":"2026-05-31T22:08:11.829Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T22:08:11.829Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}