{"id":"vidhyamitra:city-day:rishikesh:1880-02-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1880-02-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1880-02-11","date_display":"February 11, 1880 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":1880,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2407756.770833,"kali_year":4981,"ahargana":1819291.2708,"sun":{"sidereal_longitude":299.9199,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":308.9894,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":9.0695,"elapsed_within_tithi_degrees":9.0695},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":308.9894,"elapsed_within_degrees":2.3227},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.9093},"karana":{"half_tithi_index":1,"name":"Bava"},"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":1880,"month":2,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2407756.770833,"ahargana":1819291.2708,"kali_year":4981,"ayanamsa_lahiri":22.1783,"grahas":{"sun":{"sidereal_longitude":299.55604300000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":306.774143,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false,"latitude":3.1127},"mars":{"sidereal_longitude":37.98824300000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":298.364243,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":326.8111429999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":263.10344299999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":350.843943,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":265.1934,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":85.1934,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"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":1880,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2407756.770833,"kali_year":4981,"ahargana":1819291.2708,"sun":{"sidereal_longitude":299.9199,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":308.9894,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":9.0695,"elapsed_within_tithi_degrees":9.0695},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":308.9894,"elapsed_within_degrees":2.3227},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.9093},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.113,"elongation":9.069},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.113,"opposition_distance":170.931}},"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":11.004733621885194,"dayLengthDisplay":"11 Hours 00 Mins 17 Secs","nightLengthDisplay":"12 Hours 59 Mins 43 Secs","moonriseLocal":"07:26","moonsetLocal":"18:35","rahuKala":{"name":"Rāhu Kāla","start":"12:32","end":"13:54","startHours":12.525112359176312,"endHours":13.900704061911963,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:24","end":"09:46","startHours":8.398337250969366,"endHours":9.773928953705013,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:09","end":"12:32","startHours":11.149520656440664,"endHours":12.525112359176312,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:57","startHours":9.590516726673595,"endHours":9.957341180736435,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:46","startHours":7.481276115812266,"endHours":7.7747356790625375,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.158287905113472,"endHours":12.891936813239152,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:33","end":"06:17","startHours":5.5554477319823565,"endHours":6.289096640108037,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:06","end":"07:01","startHours":6.105684413076617,"endHours":7.022745548233716,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.359234629490512,"endHours":15.092883537616192,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.82747917011891,"endHours":18.227479170118908,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:29","startHours":18.02747917011891,"endHours":18.486009737697458,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.77747917011891,"endHours":19.52747917011891,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.158287905113472,"endHours":24.891936813239152,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:01","end":"08:24","startHours":7.022745548233716,"endHours":8.398337250969366,"quality":"auspicious"},{"name":"Amṛta","start":"08:24","end":"09:46","startHours":8.398337250969366,"endHours":9.773928953705013,"quality":"auspicious"},{"name":"Kāla","start":"09:46","end":"11:09","startHours":9.773928953705013,"endHours":11.149520656440664,"quality":"inauspicious"},{"name":"Śubha","start":"11:09","end":"12:32","startHours":11.149520656440664,"endHours":12.525112359176312,"quality":"auspicious"},{"name":"Roga","start":"12:32","end":"13:54","startHours":12.525112359176312,"endHours":13.900704061911963,"quality":"inauspicious"},{"name":"Udveg","start":"13:54","end":"15:17","startHours":13.900704061911963,"endHours":15.27629576464761,"quality":"inauspicious"},{"name":"Chala","start":"15:17","end":"16:39","startHours":15.27629576464761,"endHours":16.65188746738326,"quality":"neutral"},{"name":"Labha","start":"16:39","end":"18:02","startHours":16.65188746738326,"endHours":18.02747917011891,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:02","end":"19:39","startHours":18.02747917011891,"endHours":19.65188746738326,"quality":"inauspicious"},{"name":"Chala","start":"19:39","end":"21:17","startHours":19.65188746738326,"endHours":21.27629576464761,"quality":"neutral"},{"name":"Labha","start":"21:17","end":"22:54","startHours":21.27629576464761,"endHours":22.90070406191196,"quality":"auspicious"},{"name":"Amṛta","start":"22:54","end":"00:32","startHours":22.90070406191196,"endHours":24.525112359176312,"quality":"auspicious"},{"name":"Kāla","start":"00:32","end":"02:09","startHours":24.525112359176312,"endHours":26.149520656440664,"quality":"inauspicious"},{"name":"Śubha","start":"02:09","end":"03:46","startHours":26.149520656440664,"endHours":27.773928953705013,"quality":"auspicious"},{"name":"Roga","start":"03:46","end":"05:24","startHours":27.773928953705013,"endHours":29.398337250969362,"quality":"inauspicious"},{"name":"Udveg","start":"05:24","end":"07:01","startHours":29.398337250969362,"endHours":31.022745548233715,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.022745548233716,"endHours":8.022745548233715,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.022745548233715,"endHours":9.022745548233715,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.022745548233715,"endHours":10.022745548233715,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.022745548233715,"endHours":11.022745548233715,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.022745548233715,"endHours":12.022745548233715,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.022745548233715,"endHours":13.022745548233715,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.022745548233715,"endHours":14.022745548233715,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.022745548233715,"endHours":15.022745548233715,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.022745548233715,"endHours":16.022745548233715,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.022745548233715,"endHours":17.022745548233715,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.022745548233715,"endHours":18.022745548233715,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.022745548233715,"endHours":19.022745548233715,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.022745548233715,"endHours":20.022745548233715,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.022745548233715,"endHours":21.022745548233715,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.022745548233715,"endHours":22.022745548233715,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.022745548233715,"endHours":23.022745548233715,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.022745548233715,"endHours":24.022745548233715,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.022745548233715,"endHours":25.022745548233715,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.022745548233715,"endHours":26.022745548233715,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.022745548233715,"endHours":27.022745548233715,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.022745548233715,"endHours":28.022745548233715,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.022745548233715,"endHours":29.022745548233715,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.022745548233715,"endHours":30.022745548233715,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.022745548233715,"endHours":31.022745548233715,"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) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.25980211006684,"eotMinutes":-14.577141550578775,"ayanamsa":22.1783}},"calendars":{"vikram_samvat":1937,"vikram_samvatsara":"Vijaya","saka_samvat":1802,"saka_samvatsara":"Vikrama","bengali_samvat":1287,"malayalam_era":1056,"nanakshahi_year":411,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","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":"Māgha Śukla Pratipada · Vikram 1937 Vijaya · Śaka 1802 Vikrama"},"festivals":[{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3},{"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}],"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 February 11, 1880 CE · Ṛṣikeśa · Vidhyamitra","description":"February 11, 1880 CE for Ṛṣikeśa: Śukla Pratipada, sūryodaya 07:01, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1880-02-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1880-02-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/1880-02-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/1880-02-11","x-default":"https://vidhyamitra.com/city/rishikesh/1880-02-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T17:40:05.106Z","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":"2026-05-31T17:40:05.106Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T17:40:05.106Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}