{"id":"vidhyamitra:city-day:rishikesh:1921-02-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1921-02-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1921-02-08","date_display":"February 8, 1921 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":1921,"month":2,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422728.770833,"kali_year":5022,"ahargana":1834263.2708,"sun":{"sidereal_longitude":296.2484,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":296.7528,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.5044,"elapsed_within_tithi_degrees":0.5044},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":296.7528,"elapsed_within_degrees":3.4195},"yoga":{"number":18,"name":"Varīyān","sum_longitude":233.0012},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1921,"month":2,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422728.770833,"ahargana":1834263.2708,"kali_year":5022,"ayanamsa_lahiri":22.7509,"grahas":{"sun":{"sidereal_longitude":295.99940200000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":296.169902,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":4.3494},"mars":{"sidereal_longitude":334.33480199999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":312.664402,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":144.79380200000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":343.842202,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":151.41650200000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":191.9048,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":11.9048,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"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":1921,"month":2,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422728.770833,"kali_year":5022,"ahargana":1834263.2708,"sun":{"sidereal_longitude":296.2484,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":296.7528,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.5044,"elapsed_within_tithi_degrees":0.5044},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":296.7528,"elapsed_within_degrees":3.4195},"yoga":{"number":18,"name":"Varīyān","sum_longitude":233.0012},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.349,"elongation":0.504},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.349,"opposition_distance":179.496}},"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":"07:04","sunsetLocal":"17:59","solarNoonLocal":"12:31","dayLengthHours":10.926682778720032,"dayLengthDisplay":"10 Hours 55 Mins 36 Secs","nightLengthDisplay":"13 Hours 04 Mins 24 Secs","moonriseLocal":"07:05","moonsetLocal":"17:59","rahuKala":{"name":"Rāhu Kāla","start":"15:15","end":"16:37","startHours":15.254613596024374,"endHours":16.620448943364377,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:47","end":"11:09","startHours":9.791272206664358,"endHours":11.157107554004362,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"13:53","startHours":12.522942901344365,"endHours":13.888778248684371,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:37","end":"09:58","startHours":9.609160827019025,"endHours":9.97338358630969,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:31","end":"07:48","startHours":7.514879961097685,"endHours":7.806258168530219,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.1587201420537,"endHours":12.887165660635034,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:36","end":"06:20","startHours":5.602710474821679,"endHours":6.331155993403014,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:04","startHours":6.14904461375768,"endHours":7.05960151198435,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:04","startHours":14.344056697797704,"endHours":15.07250221637904,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.786284290704383,"endHours":18.186284290704382,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:26","startHours":17.986284290704383,"endHours":18.441562739817716,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.736284290704383,"endHours":19.486284290704383,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.158720142053696,"endHours":24.887165660635034,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:04","end":"08:26","startHours":7.05960151198435,"endHours":8.425436859324353,"quality":"inauspicious"},{"name":"Udveg","start":"08:26","end":"09:47","startHours":8.425436859324353,"endHours":9.791272206664358,"quality":"inauspicious"},{"name":"Chala","start":"09:47","end":"11:09","startHours":9.791272206664358,"endHours":11.157107554004362,"quality":"neutral"},{"name":"Labha","start":"11:09","end":"12:31","startHours":11.157107554004362,"endHours":12.522942901344365,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"13:53","startHours":12.522942901344365,"endHours":13.888778248684371,"quality":"auspicious"},{"name":"Kāla","start":"13:53","end":"15:15","startHours":13.888778248684371,"endHours":15.254613596024374,"quality":"inauspicious"},{"name":"Śubha","start":"15:15","end":"16:37","startHours":15.254613596024374,"endHours":16.620448943364377,"quality":"auspicious"},{"name":"Roga","start":"16:37","end":"17:59","startHours":16.620448943364377,"endHours":17.986284290704383,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:59","end":"19:37","startHours":17.986284290704383,"endHours":19.62044894336438,"quality":"inauspicious"},{"name":"Śubha","start":"19:37","end":"21:15","startHours":19.62044894336438,"endHours":21.254613596024374,"quality":"auspicious"},{"name":"Roga","start":"21:15","end":"22:53","startHours":21.254613596024374,"endHours":22.88877824868437,"quality":"inauspicious"},{"name":"Udveg","start":"22:53","end":"00:31","startHours":22.88877824868437,"endHours":24.522942901344365,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"02:09","startHours":24.522942901344365,"endHours":26.157107554004362,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:47","startHours":26.157107554004362,"endHours":27.79127220666436,"quality":"auspicious"},{"name":"Amṛta","start":"03:47","end":"05:26","startHours":27.79127220666436,"endHours":29.425436859324357,"quality":"auspicious"},{"name":"Kāla","start":"05:26","end":"07:04","startHours":29.425436859324357,"endHours":31.05960151198435,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:04","end":"08:04","startHours":7.05960151198435,"endHours":8.05960151198435,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:04","end":"09:04","startHours":8.05960151198435,"endHours":9.05960151198435,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:04","end":"10:04","startHours":9.05960151198435,"endHours":10.05960151198435,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:04","end":"11:04","startHours":10.05960151198435,"endHours":11.05960151198435,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:04","end":"12:04","startHours":11.05960151198435,"endHours":12.05960151198435,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:04","end":"13:04","startHours":12.05960151198435,"endHours":13.05960151198435,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:04","end":"14:04","startHours":13.05960151198435,"endHours":14.05960151198435,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:04","end":"15:04","startHours":14.05960151198435,"endHours":15.05960151198435,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:04","end":"16:04","startHours":15.05960151198435,"endHours":16.05960151198435,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:04","end":"17:04","startHours":16.05960151198435,"endHours":17.05960151198435,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:04","end":"18:04","startHours":17.05960151198435,"endHours":18.05960151198435,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:04","end":"19:04","startHours":18.05960151198435,"endHours":19.05960151198435,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:04","end":"20:04","startHours":19.05960151198435,"endHours":20.05960151198435,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:04","end":"21:04","startHours":20.05960151198435,"endHours":21.05960151198435,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:04","end":"22:04","startHours":21.05960151198435,"endHours":22.05960151198435,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:04","end":"23:04","startHours":22.05960151198435,"endHours":23.05960151198435,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:04","end":"00:04","startHours":23.05960151198435,"endHours":24.05960151198435,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:04","end":"01:04","startHours":24.05960151198435,"endHours":25.05960151198435,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:04","end":"02:04","startHours":25.05960151198435,"endHours":26.05960151198435,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:04","end":"03:04","startHours":26.05960151198435,"endHours":27.05960151198435,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:04","end":"04:04","startHours":27.05960151198435,"endHours":28.05960151198435,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:04","end":"05:04","startHours":28.05960151198435,"endHours":29.05960151198435,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:04","end":"06:04","startHours":29.05960151198435,"endHours":30.05960151198435,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:04","end":"07:04","startHours":30.05960151198435,"endHours":31.05960151198435,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-15.20311585044533,"eotMinutes":-14.446974080661976,"ayanamsa":22.7509}},"calendars":{"vikram_samvat":1978,"vikram_samvatsara":"Bhāva","saka_samvat":1843,"saka_samvatsara":"Durmati","bengali_samvat":1328,"malayalam_era":1097,"nanakshahi_year":452,"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 1978 Bhāva · Śaka 1843 Durmati"},"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}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 8, 1921 CE · Ṛṣikeśa · Vidhyamitra","description":"February 8, 1921 CE for Ṛṣikeśa: Śukla Pratipada, sūryodaya 07:04, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1921-02-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1921-02-08","sa":"https://sa.vidhyamitra.com/city/rishikesh/1921-02-08","hi":"https://hi.vidhyamitra.com/city/rishikesh/1921-02-08","x-default":"https://vidhyamitra.com/city/rishikesh/1921-02-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T13:32:26.990Z","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":"2026-06-01T13:32:26.990Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T13:32:26.990Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}