{"id":"vidhyamitra:city-day:rishikesh:1918-02-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1918-02-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1918-02-09","date_display":"February 9, 1918 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":1918,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421633.770833,"kali_year":5019,"ahargana":1833168.2708,"sun":{"sidereal_longitude":297.0387,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":265.1414,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.1027,"elapsed_within_tithi_degrees":4.1027},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":265.1414,"elapsed_within_degrees":11.8081},"yoga":{"number":16,"name":"Siddhi","sum_longitude":202.1801},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1918,"month":2,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2421633.770833,"ahargana":1833168.2708,"kali_year":5019,"ayanamsa_lahiri":22.709,"grahas":{"sun":{"sidereal_longitude":296.77793900000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":264.22493899999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false,"latitude":1.1801},"mars":{"sidereal_longitude":161.23863899999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":276.5396390000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":39.55833899999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":299.4961390000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":108.299239,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":249.9232,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":69.9232,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":1918,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421633.770833,"kali_year":5019,"ahargana":1833168.2708,"sun":{"sidereal_longitude":297.0387,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":265.1414,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.1027,"elapsed_within_tithi_degrees":4.1027},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":265.1414,"elapsed_within_degrees":11.8081},"yoga":{"number":16,"name":"Siddhi","sum_longitude":202.1801},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.18,"elongation":31.897},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.18,"opposition_distance":148.103}},"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":"07:03","sunsetLocal":"18:00","solarNoonLocal":"12:31","dayLengthHours":10.945734877316008,"dayLengthDisplay":"10 Hours 56 Mins 45 Secs","nightLengthDisplay":"13 Hours 03 Mins 15 Secs","moonriseLocal":"05:13","moonsetLocal":"15:29","rahuKala":{"name":"Rāhu Kāla","start":"09:47","end":"11:09","startHours":9.787448109380861,"endHours":11.155664969045363,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:54","end":"15:16","startHours":13.892098688374364,"endHours":15.260315548038866,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:03","end":"08:25","startHours":7.05101439005186,"endHours":8.419231249716361,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:58","startHours":9.605019194758928,"endHours":9.969877024002795,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:30","end":"07:48","startHours":7.5070866766066935,"endHours":7.798972940001787,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.159023999465997,"endHours":12.888739657953732,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:35","end":"06:19","startHours":5.591583073076392,"endHours":6.321298731564125,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:08","end":"07:03","startHours":6.138869816942192,"endHours":7.05101439005186,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:05","startHours":14.348170974929198,"endHours":15.077886633416933,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.79674926736787,"endHours":18.196749267367867,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:27","startHours":17.996749267367868,"endHours":18.4528215539227,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.746749267367868,"endHours":19.496749267367868,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.159023999465997,"endHours":24.88873965795373,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:03","end":"08:25","startHours":7.05101439005186,"endHours":8.419231249716361,"quality":"inauspicious"},{"name":"Śubha","start":"08:25","end":"09:47","startHours":8.419231249716361,"endHours":9.787448109380861,"quality":"auspicious"},{"name":"Roga","start":"09:47","end":"11:09","startHours":9.787448109380861,"endHours":11.155664969045363,"quality":"inauspicious"},{"name":"Udveg","start":"11:09","end":"12:31","startHours":11.155664969045363,"endHours":12.523881828709865,"quality":"inauspicious"},{"name":"Chala","start":"12:31","end":"13:54","startHours":12.523881828709865,"endHours":13.892098688374364,"quality":"neutral"},{"name":"Labha","start":"13:54","end":"15:16","startHours":13.892098688374364,"endHours":15.260315548038866,"quality":"auspicious"},{"name":"Amṛta","start":"15:16","end":"16:38","startHours":15.260315548038866,"endHours":16.628532407703368,"quality":"auspicious"},{"name":"Kāla","start":"16:38","end":"18:00","startHours":16.628532407703368,"endHours":17.996749267367868,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:00","end":"19:38","startHours":17.996749267367868,"endHours":19.628532407703368,"quality":"auspicious"},{"name":"Amṛta","start":"19:38","end":"21:16","startHours":19.628532407703368,"endHours":21.260315548038864,"quality":"auspicious"},{"name":"Kāla","start":"21:16","end":"22:54","startHours":21.260315548038864,"endHours":22.892098688374364,"quality":"inauspicious"},{"name":"Śubha","start":"22:54","end":"00:31","startHours":22.892098688374364,"endHours":24.523881828709865,"quality":"auspicious"},{"name":"Roga","start":"00:31","end":"02:09","startHours":24.523881828709865,"endHours":26.15566496904536,"quality":"inauspicious"},{"name":"Udveg","start":"02:09","end":"03:47","startHours":26.15566496904536,"endHours":27.78744810938086,"quality":"inauspicious"},{"name":"Chala","start":"03:47","end":"05:25","startHours":27.78744810938086,"endHours":29.41923124971636,"quality":"neutral"},{"name":"Labha","start":"05:25","end":"07:03","startHours":29.41923124971636,"endHours":31.05101439005186,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.05101439005186,"endHours":8.05101439005186,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.05101439005186,"endHours":9.05101439005186,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.05101439005186,"endHours":10.05101439005186,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.05101439005186,"endHours":11.05101439005186,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.05101439005186,"endHours":12.05101439005186,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.05101439005186,"endHours":13.05101439005186,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.05101439005186,"endHours":14.05101439005186,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.05101439005186,"endHours":15.05101439005186,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.05101439005186,"endHours":16.05101439005186,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.05101439005186,"endHours":17.05101439005186,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.05101439005186,"endHours":18.05101439005186,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.05101439005186,"endHours":19.05101439005186,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.05101439005186,"endHours":20.05101439005186,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.05101439005186,"endHours":21.05101439005186,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.05101439005186,"endHours":22.05101439005186,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.05101439005186,"endHours":23.05101439005186,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.05101439005186,"endHours":24.05101439005186,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.05101439005186,"endHours":25.05101439005186,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.05101439005186,"endHours":26.05101439005186,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.05101439005186,"endHours":27.05101439005186,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.05101439005186,"endHours":28.05101439005186,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.05101439005186,"endHours":29.05101439005186,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.05101439005186,"endHours":30.05101439005186,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.05101439005186,"endHours":31.05101439005186,"planetary_lord":"Mercury"}],"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Utpāta","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":-14.97369228606495,"eotMinutes":-14.503309722591807,"ayanamsa":22.709}},"calendars":{"vikram_samvat":1975,"vikram_samvatsara":"Prajāpati","saka_samvat":1840,"saka_samvatsara":"Kālayukta","bengali_samvat":1325,"malayalam_era":1094,"nanakshahi_year":449,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","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 Kṛṣṇa Trayodaśī · Vikram 1975 Prajāpati · Śaka 1840 Kālayukta"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 9, 1918 CE · Ṛṣikeśa · Vidhyamitra","description":"February 9, 1918 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 07:03, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1918-02-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1918-02-09","sa":"https://sa.vidhyamitra.com/city/rishikesh/1918-02-09","hi":"https://hi.vidhyamitra.com/city/rishikesh/1918-02-09","x-default":"https://vidhyamitra.com/city/rishikesh/1918-02-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T15:14:40.458Z","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":"2026-06-02T15:14:40.458Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T15:14:40.458Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}