{"id":"vidhyamitra:city-day:rishikesh:1920-09-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1920-09-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-09-12","date_display":"September 12, 1920 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":1920,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422579.770833,"kali_year":5022,"ahargana":1834114.2708,"sun":{"sidereal_longitude":145.6863,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":140.9145,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.2282,"elapsed_within_tithi_degrees":7.2282},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.9145,"elapsed_within_degrees":7.5811},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.6007},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1920,"month":9,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422579.770833,"ahargana":1834114.2708,"kali_year":5022,"ayanamsa_lahiri":22.7452,"grahas":{"sun":{"sidereal_longitude":146.21599500000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":139.677095,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false,"latitude":-3.8515},"mars":{"sidereal_longitude":223.03499499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":149.92389500000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":131.206795,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":166.44509500000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":143.072495,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":199.7996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":19.7996,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1920,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422579.770833,"kali_year":5022,"ahargana":1834114.2708,"sun":{"sidereal_longitude":145.6863,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":140.9145,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.2282,"elapsed_within_tithi_degrees":7.2282},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.9145,"elapsed_within_degrees":7.5811},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.6007},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.852,"elongation":4.772},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.852,"opposition_distance":175.228}},"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":"05:59","sunsetLocal":"18:27","solarNoonLocal":"12:13","dayLengthHours":12.467073918217487,"dayLengthDisplay":"12 Hours 28 Mins 01 Secs","nightLengthDisplay":"11 Hours 31 Mins 59 Secs","moonriseLocal":"05:28","moonsetLocal":"18:05","rahuKala":{"name":"Rāhu Kāla","start":"16:53","end":"18:27","startHours":16.884254126865134,"endHours":18.44263836664232,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:46","startHours":12.209101407533577,"endHours":13.767485647310762,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:20","end":"16:53","startHours":15.325869887087947,"endHours":16.884254126865134,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.88454836267558,"endHours":9.30011749328283,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:50","startHours":6.495025861683895,"endHours":6.827481166169695,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:37","startHours":11.793532276926328,"endHours":12.624670538140826,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:19","end":"05:09","startHours":4.3132879259958345,"endHours":5.144426187210334,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:56","end":"05:59","startHours":4.936641621906709,"endHours":5.975564448424833,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:17","end":"15:07","startHours":14.286947060569826,"endHours":15.118085321784326,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.24263836664232,"endHours":18.64263836664232,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:58","startHours":18.44263836664232,"endHours":18.962099779901383,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.19263836664232,"endHours":19.94263836664232,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:37","startHours":23.793532276926328,"endHours":24.624670538140826,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:59","end":"07:32","startHours":5.975564448424833,"endHours":7.533948688202019,"quality":"inauspicious"},{"name":"Chala","start":"07:32","end":"09:06","startHours":7.533948688202019,"endHours":9.092332927979204,"quality":"neutral"},{"name":"Labha","start":"09:06","end":"10:39","startHours":9.092332927979204,"endHours":10.65071716775639,"quality":"auspicious"},{"name":"Amṛta","start":"10:39","end":"12:13","startHours":10.65071716775639,"endHours":12.209101407533577,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:46","startHours":12.209101407533577,"endHours":13.767485647310762,"quality":"inauspicious"},{"name":"Śubha","start":"13:46","end":"15:20","startHours":13.767485647310762,"endHours":15.325869887087947,"quality":"auspicious"},{"name":"Roga","start":"15:20","end":"16:53","startHours":15.325869887087947,"endHours":16.884254126865134,"quality":"inauspicious"},{"name":"Udveg","start":"16:53","end":"18:27","startHours":16.884254126865134,"endHours":18.44263836664232,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:27","end":"19:53","startHours":18.44263836664232,"endHours":19.884254126865134,"quality":"auspicious"},{"name":"Roga","start":"19:53","end":"21:20","startHours":19.884254126865134,"endHours":21.325869887087947,"quality":"inauspicious"},{"name":"Udveg","start":"21:20","end":"22:46","startHours":21.325869887087947,"endHours":22.767485647310764,"quality":"inauspicious"},{"name":"Chala","start":"22:46","end":"00:13","startHours":22.767485647310764,"endHours":24.209101407533577,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:39","startHours":24.209101407533577,"endHours":25.65071716775639,"quality":"auspicious"},{"name":"Amṛta","start":"01:39","end":"03:06","startHours":25.65071716775639,"endHours":27.092332927979207,"quality":"auspicious"},{"name":"Kāla","start":"03:06","end":"04:32","startHours":27.092332927979207,"endHours":28.53394868820202,"quality":"inauspicious"},{"name":"Śubha","start":"04:32","end":"05:59","startHours":28.53394868820202,"endHours":29.975564448424834,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:59","end":"06:59","startHours":5.975564448424833,"endHours":6.975564448424833,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:59","end":"07:59","startHours":6.975564448424833,"endHours":7.975564448424833,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:59","end":"08:59","startHours":7.975564448424833,"endHours":8.975564448424834,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:59","end":"09:59","startHours":8.975564448424834,"endHours":9.975564448424834,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:59","end":"10:59","startHours":9.975564448424834,"endHours":10.975564448424834,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:59","end":"11:59","startHours":10.975564448424834,"endHours":11.975564448424834,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:59","end":"12:59","startHours":11.975564448424834,"endHours":12.975564448424834,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:59","end":"13:59","startHours":12.975564448424834,"endHours":13.975564448424834,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:59","end":"14:59","startHours":13.975564448424834,"endHours":14.975564448424834,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:59","end":"15:59","startHours":14.975564448424834,"endHours":15.975564448424834,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:59","end":"16:59","startHours":15.975564448424834,"endHours":16.975564448424834,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:59","end":"17:59","startHours":16.975564448424834,"endHours":17.975564448424834,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:59","end":"18:59","startHours":17.975564448424834,"endHours":18.975564448424834,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:59","end":"19:59","startHours":18.975564448424834,"endHours":19.975564448424834,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:59","end":"20:59","startHours":19.975564448424834,"endHours":20.975564448424834,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:59","end":"21:59","startHours":20.975564448424834,"endHours":21.975564448424834,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:59","end":"22:59","startHours":21.975564448424834,"endHours":22.975564448424834,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:59","end":"23:59","startHours":22.975564448424834,"endHours":23.975564448424834,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:59","end":"00:59","startHours":23.975564448424834,"endHours":24.975564448424834,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:59","end":"01:59","startHours":24.975564448424834,"endHours":25.975564448424834,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:59","end":"02:59","startHours":25.975564448424834,"endHours":26.975564448424834,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:59","end":"03:59","startHours":26.975564448424834,"endHours":27.975564448424834,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:59","end":"04:59","startHours":27.975564448424834,"endHours":28.975564448424834,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:59","end":"05:59","startHours":28.975564448424834,"endHours":29.975564448424834,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":4.367608226990033,"eotMinutes":4.383515547985428,"ayanamsa":22.7452}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","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":"Bhādrapada Kṛṣṇa Amāvasyā · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","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 September 12, 1920 CE · Ṛṣikeśa · Vidhyamitra","description":"September 12, 1920 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 05:59, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1920-09-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1920-09-12","sa":"https://sa.vidhyamitra.com/city/rishikesh/1920-09-12","hi":"https://hi.vidhyamitra.com/city/rishikesh/1920-09-12","x-default":"https://vidhyamitra.com/city/rishikesh/1920-09-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T03:24:36.178Z","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":"2026-05-31T03:24:36.178Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T03:24:36.178Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}