{"id":"vidhyamitra:city-day:rishikesh:1912-08-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1912-08-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1912-08-21","date_display":"August 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":8,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419635.770833,"kali_year":5014,"ahargana":1831170.2708,"sun":{"sidereal_longitude":124.5317,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":227.3812,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":102.8495,"elapsed_within_tithi_degrees":6.8495},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.3812,"elapsed_within_degrees":0.7146},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":351.913},"karana":{"half_tithi_index":17,"name":"Kaulava"},"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":1912,"month":8,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2419635.770833,"ahargana":1831170.2708,"kali_year":5014,"ayanamsa_lahiri":22.6326,"grahas":{"sun":{"sidereal_longitude":124.96657800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":230.24557800000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":-3.5249},"mars":{"sidereal_longitude":150.466678,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":128.75937799999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":224.81697800000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":138.85307799999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":41.76237800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":355.7868,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":175.7868,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":8,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419635.770833,"kali_year":5014,"ahargana":1831170.2708,"sun":{"sidereal_longitude":124.5317,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":227.3812,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":102.8495,"elapsed_within_tithi_degrees":6.8495},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":227.3812,"elapsed_within_degrees":0.7146},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":351.913},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.525,"elongation":102.85},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.525,"opposition_distance":77.15}},"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":"05:47","sunsetLocal":"18:53","solarNoonLocal":"12:20","dayLengthHours":13.100651089291512,"dayLengthDisplay":"13 Hours 06 Mins 02 Secs","nightLengthDisplay":"10 Hours 53 Mins 58 Secs","moonriseLocal":"14:13","moonsetLocal":"00:29","rahuKala":{"name":"Rāhu Kāla","start":"12:20","end":"13:58","startHours":12.32879155526658,"endHours":13.966372941428018,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:25","end":"09:03","startHours":7.416047396782262,"endHours":9.0536287829437,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:41","end":"12:20","startHours":10.69121016910514,"endHours":12.32879155526658,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:50","end":"09:16","startHours":8.835284598122175,"endHours":9.271972967765226,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:19","end":"06:40","startHours":6.324326472674636,"endHours":6.6736771683890765,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:46","startHours":11.89210318562353,"endHours":12.76547992490963,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:02","end":"04:54","startHours":4.031712532048622,"endHours":4.905089271334722,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:41","end":"05:47","startHours":4.686745086513197,"endHours":5.778466010620823,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:23","startHours":14.512233403481831,"endHours":15.385610142767932,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:41","end":"19:05","startHours":18.679117099912336,"endHours":19.079117099912335,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:53","end":"19:25","startHours":18.879117099912335,"endHours":19.42497756196615,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:38","end":"20:23","startHours":18.629117099912335,"endHours":20.379117099912335,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:46","startHours":23.89210318562353,"endHours":24.76547992490963,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:47","end":"07:25","startHours":5.778466010620823,"endHours":7.416047396782262,"quality":"auspicious"},{"name":"Amṛta","start":"07:25","end":"09:03","startHours":7.416047396782262,"endHours":9.0536287829437,"quality":"auspicious"},{"name":"Kāla","start":"09:03","end":"10:41","startHours":9.0536287829437,"endHours":10.69121016910514,"quality":"inauspicious"},{"name":"Śubha","start":"10:41","end":"12:20","startHours":10.69121016910514,"endHours":12.32879155526658,"quality":"auspicious"},{"name":"Roga","start":"12:20","end":"13:58","startHours":12.32879155526658,"endHours":13.966372941428018,"quality":"inauspicious"},{"name":"Udveg","start":"13:58","end":"15:36","startHours":13.966372941428018,"endHours":15.603954327589458,"quality":"inauspicious"},{"name":"Chala","start":"15:36","end":"17:14","startHours":15.603954327589458,"endHours":17.241535713750896,"quality":"neutral"},{"name":"Labha","start":"17:14","end":"18:53","startHours":17.241535713750896,"endHours":18.879117099912335,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:53","end":"20:14","startHours":18.879117099912335,"endHours":20.241535713750896,"quality":"inauspicious"},{"name":"Chala","start":"20:14","end":"21:36","startHours":20.241535713750896,"endHours":21.603954327589456,"quality":"neutral"},{"name":"Labha","start":"21:36","end":"22:58","startHours":21.603954327589456,"endHours":22.96637294142802,"quality":"auspicious"},{"name":"Amṛta","start":"22:58","end":"00:20","startHours":22.96637294142802,"endHours":24.32879155526658,"quality":"auspicious"},{"name":"Kāla","start":"00:20","end":"01:41","startHours":24.32879155526658,"endHours":25.69121016910514,"quality":"inauspicious"},{"name":"Śubha","start":"01:41","end":"03:03","startHours":25.69121016910514,"endHours":27.0536287829437,"quality":"auspicious"},{"name":"Roga","start":"03:03","end":"04:25","startHours":27.0536287829437,"endHours":28.41604739678226,"quality":"inauspicious"},{"name":"Udveg","start":"04:25","end":"05:47","startHours":28.41604739678226,"endHours":29.778466010620825,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:47","end":"06:47","startHours":5.778466010620823,"endHours":6.778466010620823,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:47","end":"07:47","startHours":6.778466010620823,"endHours":7.778466010620823,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:47","end":"08:47","startHours":7.778466010620823,"endHours":8.778466010620823,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:47","end":"09:47","startHours":8.778466010620823,"endHours":9.778466010620823,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:47","end":"10:47","startHours":9.778466010620823,"endHours":10.778466010620823,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:47","end":"11:47","startHours":10.778466010620823,"endHours":11.778466010620823,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:47","end":"12:47","startHours":11.778466010620823,"endHours":12.778466010620823,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:47","end":"13:47","startHours":12.778466010620823,"endHours":13.778466010620823,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:47","end":"14:47","startHours":13.778466010620823,"endHours":14.778466010620823,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:47","end":"15:47","startHours":14.778466010620823,"endHours":15.778466010620823,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:47","end":"16:47","startHours":15.778466010620823,"endHours":16.778466010620825,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:47","end":"17:47","startHours":16.778466010620825,"endHours":17.778466010620825,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:47","end":"18:47","startHours":17.778466010620825,"endHours":18.778466010620825,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:47","end":"19:47","startHours":18.778466010620825,"endHours":19.778466010620825,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:47","end":"20:47","startHours":19.778466010620825,"endHours":20.778466010620825,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:47","end":"21:47","startHours":20.778466010620825,"endHours":21.778466010620825,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:47","end":"22:47","startHours":21.778466010620825,"endHours":22.778466010620825,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:47","end":"23:47","startHours":22.778466010620825,"endHours":23.778466010620825,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:47","end":"00:47","startHours":23.778466010620825,"endHours":24.778466010620825,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:47","end":"01:47","startHours":24.778466010620825,"endHours":25.778466010620825,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:47","end":"02:47","startHours":25.778466010620825,"endHours":26.778466010620825,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:47","end":"03:47","startHours":26.778466010620825,"endHours":27.778466010620825,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:47","end":"04:47","startHours":27.778466010620825,"endHours":28.778466010620825,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:47","end":"05:47","startHours":28.778466010620825,"endHours":29.778466010620825,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"North-East","rahuVasa":"South-West","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":12.305286116834825,"eotMinutes":-2.7978933159948465,"ayanamsa":22.6326}},"calendars":{"vikram_samvat":1969,"vikram_samvatsara":"Krodhana","saka_samvat":1834,"saka_samvatsara":"Paridhāvi","bengali_samvat":1319,"malayalam_era":1088,"nanakshahi_year":443,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Navamī · Vikram 1969 Krodhana · Śaka 1834 Paridhāvi"},"festivals":[],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","relevance":0.5}]},"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 August 21, 1912 CE · Ṛṣikeśa · Vidhyamitra","description":"August 21, 1912 CE for Ṛṣikeśa: Śukla Navamī, sūryodaya 05:47, sūryāsta 18:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1912-08-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1912-08-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1912-08-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1912-08-21","x-default":"https://vidhyamitra.com/city/rishikesh/1912-08-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T07:17:20.375Z","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":"2026-06-01T07:17:20.375Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T07:17:20.375Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}