{"id":"vidhyamitra:city-day:rishikesh:1917-02-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1917-02-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1917-02-11","date_display":"February 11, 1917 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":1917,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421270.770833,"kali_year":5018,"ahargana":1832805.2708,"sun":{"sidereal_longitude":299.3364,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":165.2938,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":225.9573,"elapsed_within_tithi_degrees":9.9573},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":165.2938,"elapsed_within_degrees":5.2938},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":104.6302},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1917,"month":2,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2421270.770833,"ahargana":1832805.2708,"kali_year":5018,"ayanamsa_lahiri":22.6951,"grahas":{"sun":{"sidereal_longitude":299.061108,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":161.794308,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false,"latitude":-4.3687},"mars":{"sidereal_longitude":304.110908,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":274.17680799999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":7.675907999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":281.653508,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":93.19780800000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":269.1567,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":89.1567,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1917,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421270.770833,"kali_year":5018,"ahargana":1832805.2708,"sun":{"sidereal_longitude":299.3364,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":165.2938,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":225.9573,"elapsed_within_tithi_degrees":9.9573},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":165.2938,"elapsed_within_degrees":5.2938},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":104.6302},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.369,"elongation":134.043},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.369,"opposition_distance":45.957}},"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":"07:01","sunsetLocal":"18:02","solarNoonLocal":"12:32","dayLengthHours":11.005313839602529,"dayLengthDisplay":"11 Hours 00 Mins 19 Secs","nightLengthDisplay":"12 Hours 59 Mins 41 Secs","moonriseLocal":"21:24","moonsetLocal":"09:21","rahuKala":{"name":"Rāhu Kāla","start":"16:39","end":"18:02","startHours":16.65210504902726,"endHours":18.027769278977576,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:32","end":"13:54","startHours":12.525112359176312,"endHours":13.900776589126627,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:17","end":"16:39","startHours":15.276440819076942,"endHours":16.65210504902726,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:57","startHours":9.59036200194897,"endHours":9.957205796602388,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:46","startHours":7.4810101826918185,"endHours":7.7744852184145525,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.158268564522894,"endHours":12.89195615382973,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:33","end":"06:17","startHours":5.555080260761375,"endHours":6.288767850068211,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:06","end":"07:01","startHours":6.105345952741502,"endHours":7.0224554393750465,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.3593313324434,"endHours":15.093018921750236,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.827769278977577,"endHours":18.227769278977576,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:29","startHours":18.027769278977576,"endHours":18.486324022294347,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.777769278977576,"endHours":19.527769278977576,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.158268564522896,"endHours":24.891956153829728,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:01","end":"08:24","startHours":7.0224554393750465,"endHours":8.398119669325363,"quality":"inauspicious"},{"name":"Chala","start":"08:24","end":"09:46","startHours":8.398119669325363,"endHours":9.773783899275678,"quality":"neutral"},{"name":"Labha","start":"09:46","end":"11:09","startHours":9.773783899275678,"endHours":11.149448129225995,"quality":"auspicious"},{"name":"Amṛta","start":"11:09","end":"12:32","startHours":11.149448129225995,"endHours":12.525112359176312,"quality":"auspicious"},{"name":"Kāla","start":"12:32","end":"13:54","startHours":12.525112359176312,"endHours":13.900776589126627,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:17","startHours":13.900776589126627,"endHours":15.276440819076942,"quality":"auspicious"},{"name":"Roga","start":"15:17","end":"16:39","startHours":15.276440819076942,"endHours":16.65210504902726,"quality":"inauspicious"},{"name":"Udveg","start":"16:39","end":"18:02","startHours":16.65210504902726,"endHours":18.027769278977576,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:02","end":"19:39","startHours":18.027769278977576,"endHours":19.65210504902726,"quality":"auspicious"},{"name":"Roga","start":"19:39","end":"21:17","startHours":19.65210504902726,"endHours":21.276440819076946,"quality":"inauspicious"},{"name":"Udveg","start":"21:17","end":"22:54","startHours":21.276440819076946,"endHours":22.90077658912663,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:32","startHours":22.90077658912663,"endHours":24.525112359176312,"quality":"neutral"},{"name":"Labha","start":"00:32","end":"02:09","startHours":24.525112359176312,"endHours":26.149448129225995,"quality":"auspicious"},{"name":"Amṛta","start":"02:09","end":"03:46","startHours":26.149448129225995,"endHours":27.773783899275678,"quality":"auspicious"},{"name":"Kāla","start":"03:46","end":"05:24","startHours":27.773783899275678,"endHours":29.398119669325364,"quality":"inauspicious"},{"name":"Śubha","start":"05:24","end":"07:01","startHours":29.398119669325364,"endHours":31.022455439375047,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.0224554393750465,"endHours":8.022455439375047,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.022455439375047,"endHours":9.022455439375047,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.022455439375047,"endHours":10.022455439375047,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.022455439375047,"endHours":11.022455439375047,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.022455439375047,"endHours":12.022455439375047,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.022455439375047,"endHours":13.022455439375047,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.022455439375047,"endHours":14.022455439375047,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.022455439375047,"endHours":15.022455439375047,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.022455439375047,"endHours":16.022455439375047,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.022455439375047,"endHours":17.022455439375047,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.022455439375047,"endHours":18.022455439375047,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.022455439375047,"endHours":19.022455439375047,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.022455439375047,"endHours":20.022455439375047,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.022455439375047,"endHours":21.022455439375047,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.022455439375047,"endHours":22.022455439375047,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.022455439375047,"endHours":23.022455439375047,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.022455439375047,"endHours":24.022455439375047,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.022455439375047,"endHours":25.022455439375047,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.022455439375047,"endHours":26.022455439375047,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.022455439375047,"endHours":27.022455439375047,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.022455439375047,"endHours":28.022455439375047,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.022455439375047,"endHours":29.022455439375047,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.022455439375047,"endHours":30.022455439375047,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.022455439375047,"endHours":31.022455439375047,"planetary_lord":"Jupiter"}],"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.252756119156569,"eotMinutes":-14.577141550578775,"ayanamsa":22.6951}},"calendars":{"vikram_samvat":1974,"vikram_samvatsara":"Pramoda","saka_samvat":1839,"saka_samvatsara":"Piṅgala","bengali_samvat":1324,"malayalam_era":1093,"nanakshahi_year":448,"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":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Caturthī · Vikram 1974 Pramoda · Śaka 1839 Piṅgala"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi_ingress":"Kumbha"},"precedence":5},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 11, 1917 CE · Ṛṣikeśa · Vidhyamitra","description":"February 11, 1917 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 07:01, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1917-02-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1917-02-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/1917-02-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/1917-02-11","x-default":"https://vidhyamitra.com/city/rishikesh/1917-02-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:38:47.397Z","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":"2026-06-01T15:38:47.397Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:38:47.397Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}