{"id":"vidhyamitra:city-day:rishikesh:1917-05-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1917-05-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1917-05-12","date_display":"May 12, 1917 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":1917,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421360.770833,"kali_year":5019,"ahargana":1832895.2708,"sun":{"sidereal_longitude":28.227,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":270.9771,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":242.7501,"elapsed_within_tithi_degrees":2.7501},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.9771,"elapsed_within_degrees":4.3105},"yoga":{"number":23,"name":"Śubha","sum_longitude":299.2041},"karana":{"half_tithi_index":40,"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":1917,"month":5,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2421360.770833,"ahargana":1832895.2708,"kali_year":5019,"ayanamsa_lahiri":22.6986,"grahas":{"sun":{"sidereal_longitude":28.036069999999995,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":271.16277,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":0.5158},"mars":{"sidereal_longitude":13.755769999999984,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":36.56997000000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":26.782770000000028,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":33.344269999999995,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":93.39947000000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":264.388,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":84.388,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1917,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2421360.770833,"kali_year":5019,"ahargana":1832895.2708,"sun":{"sidereal_longitude":28.227,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":270.9771,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":242.7501,"elapsed_within_tithi_degrees":2.7501},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.9771,"elapsed_within_degrees":4.3105},"yoga":{"number":23,"name":"Śubha","sum_longitude":299.2041},"karana":{"half_tithi_index":40,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.516,"elongation":117.25},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.516,"opposition_distance":62.75}},"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":"05:26","sunsetLocal":"19:01","solarNoonLocal":"12:13","dayLengthHours":13.578678963799184,"dayLengthDisplay":"13 Hours 34 Mins 43 Secs","nightLengthDisplay":"10 Hours 25 Mins 17 Secs","moonriseLocal":"23:15","moonsetLocal":"09:36","rahuKala":{"name":"Rāhu Kāla","start":"08:50","end":"10:31","startHours":8.825197264389063,"endHours":10.522532134863962,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:55","end":"15:37","startHours":13.917201875813756,"endHours":15.614536746288655,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:26","end":"07:08","startHours":5.430527523439267,"endHours":7.127862393914165,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:03","startHours":8.598885948325744,"endHours":9.051508580452383,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:00","end":"06:22","startHours":5.996305813597566,"endHours":6.358403919298877,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:40","startHours":11.76724437321222,"endHours":12.672489637465498,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:32","startHours":3.6200369949327085,"endHours":4.525282259185988,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:26","startHours":4.298970943122668,"endHours":5.430527523439267,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:23","startHours":14.482980165972057,"endHours":15.388225430225337,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:49","end":"19:13","startHours":18.809206487238452,"endHours":19.20920648723845,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:01","end":"19:34","startHours":19.00920648723845,"endHours":19.57498477739675,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:46","end":"20:31","startHours":18.75920648723845,"endHours":20.50920648723845,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:40","startHours":23.76724437321222,"endHours":24.6724896374655,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:26","end":"07:08","startHours":5.430527523439267,"endHours":7.127862393914165,"quality":"inauspicious"},{"name":"Śubha","start":"07:08","end":"08:50","startHours":7.127862393914165,"endHours":8.825197264389063,"quality":"auspicious"},{"name":"Roga","start":"08:50","end":"10:31","startHours":8.825197264389063,"endHours":10.522532134863962,"quality":"inauspicious"},{"name":"Udveg","start":"10:31","end":"12:13","startHours":10.522532134863962,"endHours":12.219867005338859,"quality":"inauspicious"},{"name":"Chala","start":"12:13","end":"13:55","startHours":12.219867005338859,"endHours":13.917201875813756,"quality":"neutral"},{"name":"Labha","start":"13:55","end":"15:37","startHours":13.917201875813756,"endHours":15.614536746288655,"quality":"auspicious"},{"name":"Amṛta","start":"15:37","end":"17:19","startHours":15.614536746288655,"endHours":17.311871616763554,"quality":"auspicious"},{"name":"Kāla","start":"17:19","end":"19:01","startHours":17.311871616763554,"endHours":19.00920648723845,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:01","end":"20:19","startHours":19.00920648723845,"endHours":20.311871616763554,"quality":"auspicious"},{"name":"Amṛta","start":"20:19","end":"21:37","startHours":20.311871616763554,"endHours":21.614536746288657,"quality":"auspicious"},{"name":"Kāla","start":"21:37","end":"22:55","startHours":21.614536746288657,"endHours":22.917201875813756,"quality":"inauspicious"},{"name":"Śubha","start":"22:55","end":"00:13","startHours":22.917201875813756,"endHours":24.21986700533886,"quality":"auspicious"},{"name":"Roga","start":"00:13","end":"01:31","startHours":24.21986700533886,"endHours":25.52253213486396,"quality":"inauspicious"},{"name":"Udveg","start":"01:31","end":"02:50","startHours":25.52253213486396,"endHours":26.82519726438906,"quality":"inauspicious"},{"name":"Chala","start":"02:50","end":"04:08","startHours":26.82519726438906,"endHours":28.127862393914164,"quality":"neutral"},{"name":"Labha","start":"04:08","end":"05:26","startHours":28.127862393914164,"endHours":29.430527523439267,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:26","end":"06:26","startHours":5.430527523439267,"endHours":6.430527523439267,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:26","end":"07:26","startHours":6.430527523439267,"endHours":7.430527523439267,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:26","end":"08:26","startHours":7.430527523439267,"endHours":8.430527523439267,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:26","end":"09:26","startHours":8.430527523439267,"endHours":9.430527523439267,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:26","end":"10:26","startHours":9.430527523439267,"endHours":10.430527523439267,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:26","end":"11:26","startHours":10.430527523439267,"endHours":11.430527523439267,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:26","end":"12:26","startHours":11.430527523439267,"endHours":12.430527523439267,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:26","end":"13:26","startHours":12.430527523439267,"endHours":13.430527523439267,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:26","end":"14:26","startHours":13.430527523439267,"endHours":14.430527523439267,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:26","end":"15:26","startHours":14.430527523439267,"endHours":15.430527523439267,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:26","end":"16:26","startHours":15.430527523439267,"endHours":16.430527523439267,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:26","end":"17:26","startHours":16.430527523439267,"endHours":17.430527523439267,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:26","end":"18:26","startHours":17.430527523439267,"endHours":18.430527523439267,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:26","end":"19:26","startHours":18.430527523439267,"endHours":19.430527523439267,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:26","end":"20:26","startHours":19.430527523439267,"endHours":20.430527523439267,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:26","end":"21:26","startHours":20.430527523439267,"endHours":21.430527523439267,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:26","end":"22:26","startHours":21.430527523439267,"endHours":22.430527523439267,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:26","end":"23:26","startHours":22.430527523439267,"endHours":23.430527523439267,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:26","end":"00:26","startHours":23.430527523439267,"endHours":24.430527523439267,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:26","end":"01:26","startHours":24.430527523439267,"endHours":25.430527523439267,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:26","end":"02:26","startHours":25.430527523439267,"endHours":26.430527523439267,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:26","end":"03:26","startHours":26.430527523439267,"endHours":27.430527523439267,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:26","end":"04:26","startHours":27.430527523439267,"endHours":28.430527523439267,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:26","end":"05:26","startHours":28.430527523439267,"endHours":29.430527523439267,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":17.934752747356075,"eotMinutes":3.7375796796685163,"ayanamsa":22.6986}},"calendars":{"vikram_samvat":1974,"vikram_samvatsara":"Pramoda","saka_samvat":1839,"saka_samvatsara":"Piṅgala","bengali_samvat":1324,"malayalam_era":1093,"nanakshahi_year":448,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Ṣaṣṭhī · Vikram 1974 Pramoda · Śaka 1839 Piṅgala"},"festivals":[],"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 May 12, 1917 CE · Ṛṣikeśa · Vidhyamitra","description":"May 12, 1917 CE for Ṛṣikeśa: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:26, sūryāsta 19:01.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1917-05-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1917-05-12","sa":"https://sa.vidhyamitra.com/city/rishikesh/1917-05-12","hi":"https://hi.vidhyamitra.com/city/rishikesh/1917-05-12","x-default":"https://vidhyamitra.com/city/rishikesh/1917-05-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T16:52:31.922Z","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":"2026-05-31T16:52:31.922Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T16:52:31.922Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}