{"id":"vidhyamitra:city-day:rishikesh:1912-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1912-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1912-01-21","date_display":"January 21, 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":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419422.770833,"kali_year":5013,"ahargana":1830957.2708,"sun":{"sidereal_longitude":277.1635,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":296.0877,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":18.9242,"elapsed_within_tithi_degrees":6.9242},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":296.0877,"elapsed_within_degrees":2.7544},"yoga":{"number":16,"name":"Siddhi","sum_longitude":213.2512},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":1912,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2419422.770833,"ahargana":1830957.2708,"kali_year":5013,"ayanamsa_lahiri":22.6244,"grahas":{"sun":{"sidereal_longitude":277.020616,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":294.2966160000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":-4.254},"mars":{"sidereal_longitude":35.89131600000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":254.87041599999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":227.18701599999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":237.87691599999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":21.67181599999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":7.0726,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":187.0726,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":1912,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419422.770833,"kali_year":5013,"ahargana":1830957.2708,"sun":{"sidereal_longitude":277.1635,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":296.0877,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":18.9242,"elapsed_within_tithi_degrees":6.9242},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":296.0877,"elapsed_within_degrees":2.7544},"yoga":{"number":16,"name":"Siddhi","sum_longitude":213.2512},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.254,"elongation":18.924},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.254,"opposition_distance":161.076}},"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":"07:13","sunsetLocal":"17:43","solarNoonLocal":"12:28","dayLengthHours":10.496617379212147,"dayLengthDisplay":"10 Hours 29 Mins 48 Secs","nightLengthDisplay":"13 Hours 30 Mins 12 Secs","moonriseLocal":"08:12","moonsetLocal":"19:02","rahuKala":{"name":"Rāhu Kāla","start":"16:24","end":"17:43","startHours":16.405987038023422,"endHours":17.71806421042494,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:28","end":"13:47","startHours":12.469755520818868,"endHours":13.781832693220386,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:06","end":"16:24","startHours":15.093909865621903,"endHours":16.405987038023422,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.670657553028962,"endHours":10.0205447990027,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:56","startHours":7.658805888679967,"endHours":7.938715685458957,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:49","startHours":12.11986827484513,"endHours":12.819642766792606,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:49","end":"06:31","startHours":5.821897847317841,"endHours":6.521672339265318,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:13","startHours":6.346728716278449,"endHours":7.221446831212794,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"14:55","startHours":14.219191750687557,"endHours":14.918966242635033,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:31","end":"17:55","startHours":17.518064210424942,"endHours":17.91806421042494,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:43","end":"18:09","startHours":17.71806421042494,"endHours":18.155423267892115,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:28","end":"19:13","startHours":17.46806421042494,"endHours":19.21806421042494,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:49","startHours":24.11986827484513,"endHours":24.819642766792608,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:13","end":"08:32","startHours":7.221446831212794,"endHours":8.533524003614312,"quality":"inauspicious"},{"name":"Chala","start":"08:32","end":"09:51","startHours":8.533524003614312,"endHours":9.84560117601583,"quality":"neutral"},{"name":"Labha","start":"09:51","end":"11:09","startHours":9.84560117601583,"endHours":11.157678348417349,"quality":"auspicious"},{"name":"Amṛta","start":"11:09","end":"12:28","startHours":11.157678348417349,"endHours":12.469755520818868,"quality":"auspicious"},{"name":"Kāla","start":"12:28","end":"13:47","startHours":12.469755520818868,"endHours":13.781832693220386,"quality":"inauspicious"},{"name":"Śubha","start":"13:47","end":"15:06","startHours":13.781832693220386,"endHours":15.093909865621903,"quality":"auspicious"},{"name":"Roga","start":"15:06","end":"16:24","startHours":15.093909865621903,"endHours":16.405987038023422,"quality":"inauspicious"},{"name":"Udveg","start":"16:24","end":"17:43","startHours":16.405987038023422,"endHours":17.71806421042494,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:43","end":"19:24","startHours":17.71806421042494,"endHours":19.405987038023422,"quality":"auspicious"},{"name":"Roga","start":"19:24","end":"21:06","startHours":19.405987038023422,"endHours":21.093909865621903,"quality":"inauspicious"},{"name":"Udveg","start":"21:06","end":"22:47","startHours":21.093909865621903,"endHours":22.781832693220387,"quality":"inauspicious"},{"name":"Chala","start":"22:47","end":"00:28","startHours":22.781832693220387,"endHours":24.469755520818868,"quality":"neutral"},{"name":"Labha","start":"00:28","end":"02:09","startHours":24.469755520818868,"endHours":26.15767834841735,"quality":"auspicious"},{"name":"Amṛta","start":"02:09","end":"03:51","startHours":26.15767834841735,"endHours":27.845601176015833,"quality":"auspicious"},{"name":"Kāla","start":"03:51","end":"05:32","startHours":27.845601176015833,"endHours":29.533524003614314,"quality":"inauspicious"},{"name":"Śubha","start":"05:32","end":"07:13","startHours":29.533524003614314,"endHours":31.221446831212795,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.221446831212794,"endHours":8.221446831212795,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.221446831212795,"endHours":9.221446831212795,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.221446831212795,"endHours":10.221446831212795,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.221446831212795,"endHours":11.221446831212795,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.221446831212795,"endHours":12.221446831212795,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.221446831212795,"endHours":13.221446831212795,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.221446831212795,"endHours":14.221446831212795,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.221446831212795,"endHours":15.221446831212795,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.221446831212795,"endHours":16.221446831212795,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.221446831212795,"endHours":17.221446831212795,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.221446831212795,"endHours":18.221446831212795,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.221446831212795,"endHours":19.221446831212795,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.221446831212795,"endHours":20.221446831212795,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.221446831212795,"endHours":21.221446831212795,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.221446831212795,"endHours":22.221446831212795,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.221446831212795,"endHours":23.221446831212795,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.221446831212795,"endHours":24.221446831212795,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.221446831212795,"endHours":25.221446831212795,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.221446831212795,"endHours":26.221446831212795,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.221446831212795,"endHours":27.221446831212795,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.221446831212795,"endHours":28.221446831212795,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.221446831212795,"endHours":29.221446831212795,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.221446831212795,"endHours":30.221446831212795,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.221446831212795,"endHours":31.221446831212795,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.222816426506117,"eotMinutes":-11.255731249132124,"ayanamsa":22.6244}},"calendars":{"vikram_samvat":1969,"vikram_samvatsara":"Krodhana","saka_samvat":1834,"saka_samvatsara":"Paridhāvi","bengali_samvat":1319,"malayalam_era":1088,"nanakshahi_year":443,"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 Dvitīyā · Vikram 1969 Krodhana · Śaka 1834 Paridhāvi"},"festivals":[],"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 January 21, 1912 CE · Ṛṣikeśa · Vidhyamitra","description":"January 21, 1912 CE for Ṛṣikeśa: Śukla Dvitīyā, sūryodaya 07:13, sūryāsta 17:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1912-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1912-01-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1912-01-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1912-01-21","x-default":"https://vidhyamitra.com/city/rishikesh/1912-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T22:02:17.342Z","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":"2026-05-31T22:02:17.342Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T22:02:17.342Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}