{"id":"vidhyamitra:city-day:rishikesh:1913-12-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1913-12-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1913-12-11","date_display":"December 11, 1913 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":1913,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420112.770833,"kali_year":5015,"ahargana":1831647.2708,"sun":{"sidereal_longitude":235.5456,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":24.0979,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":148.5524,"elapsed_within_tithi_degrees":4.5524},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":24.0979,"elapsed_within_degrees":10.7646},"yoga":{"number":20,"name":"Śiva","sum_longitude":259.6435},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1913,"month":12,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2420112.770833,"ahargana":1831647.2708,"kali_year":5015,"ayanamsa_lahiri":22.6508,"grahas":{"sun":{"sidereal_longitude":235.755453,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":25.192552999999975,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":3.62},"mars":{"sidereal_longitude":91.75055300000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":215.91955299999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":268.96715300000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":221.93135299999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":52.595853000000034,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":330.5131,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":150.5131,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":1913,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420112.770833,"kali_year":5015,"ahargana":1831647.2708,"sun":{"sidereal_longitude":235.5456,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":24.0979,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":148.5524,"elapsed_within_tithi_degrees":4.5524},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":24.0979,"elapsed_within_degrees":10.7646},"yoga":{"number":20,"name":"Śiva","sum_longitude":259.6435},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.62,"elongation":148.552},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.62,"opposition_distance":31.448}},"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":"17:18","solarNoonLocal":"12:11","dayLengthHours":10.251698248910948,"dayLengthDisplay":"10 Hours 15 Mins 06 Secs","nightLengthDisplay":"13 Hours 44 Mins 54 Secs","moonriseLocal":"15:25","moonsetLocal":"04:53","rahuKala":{"name":"Rāhu Kāla","start":"13:28","end":"14:45","startHours":13.463820903038322,"endHours":14.745283184152191,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:03","end":"08:20","startHours":7.05650949746898,"endHours":8.337971778582848,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:37","end":"10:54","startHours":9.619434059696717,"endHours":10.900896340810586,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:47","startHours":9.448572422214868,"endHours":9.790295697178566,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:45","startHours":7.4836635911736025,"endHours":7.757042211144561,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:31","startHours":11.840635346960756,"endHours":12.524081896888152,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:22","startHours":5.689616397614187,"endHours":6.373062947541584,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:03","startHours":6.202201310059734,"endHours":7.05650949746898,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:34","startHours":13.890974996742944,"endHours":14.57442154667034,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.10820774637993,"endHours":17.508207746379927,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:44","startHours":17.308207746379928,"endHours":17.73536184008455,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.058207746379928,"endHours":18.808207746379928,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:31","startHours":23.840635346960756,"endHours":24.524081896888152,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:03","end":"08:20","startHours":7.05650949746898,"endHours":8.337971778582848,"quality":"auspicious"},{"name":"Roga","start":"08:20","end":"09:37","startHours":8.337971778582848,"endHours":9.619434059696717,"quality":"inauspicious"},{"name":"Udveg","start":"09:37","end":"10:54","startHours":9.619434059696717,"endHours":10.900896340810586,"quality":"inauspicious"},{"name":"Chala","start":"10:54","end":"12:11","startHours":10.900896340810586,"endHours":12.182358621924454,"quality":"neutral"},{"name":"Labha","start":"12:11","end":"13:28","startHours":12.182358621924454,"endHours":13.463820903038322,"quality":"auspicious"},{"name":"Amṛta","start":"13:28","end":"14:45","startHours":13.463820903038322,"endHours":14.745283184152191,"quality":"auspicious"},{"name":"Kāla","start":"14:45","end":"16:02","startHours":14.745283184152191,"endHours":16.02674546526606,"quality":"inauspicious"},{"name":"Śubha","start":"16:02","end":"17:18","startHours":16.02674546526606,"endHours":17.308207746379928,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:18","end":"19:02","startHours":17.308207746379928,"endHours":19.02674546526606,"quality":"auspicious"},{"name":"Kāla","start":"19:02","end":"20:45","startHours":19.02674546526606,"endHours":20.745283184152193,"quality":"inauspicious"},{"name":"Śubha","start":"20:45","end":"22:28","startHours":20.745283184152193,"endHours":22.46382090303832,"quality":"auspicious"},{"name":"Roga","start":"22:28","end":"00:11","startHours":22.46382090303832,"endHours":24.182358621924454,"quality":"inauspicious"},{"name":"Udveg","start":"00:11","end":"01:54","startHours":24.182358621924454,"endHours":25.900896340810586,"quality":"inauspicious"},{"name":"Chala","start":"01:54","end":"03:37","startHours":25.900896340810586,"endHours":27.619434059696715,"quality":"neutral"},{"name":"Labha","start":"03:37","end":"05:20","startHours":27.619434059696715,"endHours":29.337971778582848,"quality":"auspicious"},{"name":"Amṛta","start":"05:20","end":"07:03","startHours":29.337971778582848,"endHours":31.05650949746898,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.05650949746898,"endHours":8.05650949746898,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.05650949746898,"endHours":9.05650949746898,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.05650949746898,"endHours":10.05650949746898,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.05650949746898,"endHours":11.05650949746898,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.05650949746898,"endHours":12.05650949746898,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.05650949746898,"endHours":13.05650949746898,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.05650949746898,"endHours":14.05650949746898,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.05650949746898,"endHours":15.05650949746898,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.05650949746898,"endHours":16.05650949746898,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.05650949746898,"endHours":17.05650949746898,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.05650949746898,"endHours":18.05650949746898,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.05650949746898,"endHours":19.05650949746898,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.05650949746898,"endHours":20.05650949746898,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.05650949746898,"endHours":21.05650949746898,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.05650949746898,"endHours":22.05650949746898,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.05650949746898,"endHours":23.05650949746898,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.05650949746898,"endHours":24.05650949746898,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.05650949746898,"endHours":25.05650949746898,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.05650949746898,"endHours":26.05650949746898,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.05650949746898,"endHours":27.05650949746898,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.05650949746898,"endHours":28.05650949746898,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.05650949746898,"endHours":29.05650949746898,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.05650949746898,"endHours":30.05650949746898,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.05650949746898,"endHours":31.05650949746898,"planetary_lord":"Moon"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.930707497769028,"eotMinutes":5.988082684532823,"ayanamsa":22.6508}},"calendars":{"vikram_samvat":1970,"vikram_samvatsara":"Akṣaya","saka_samvat":1835,"saka_samvatsara":"Pramādī","bengali_samvat":1320,"malayalam_era":1089,"nanakshahi_year":444,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Trayodaśī · Vikram 1970 Akṣaya · Śaka 1835 Pramādī"},"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":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 December 11, 1913 CE · Ṛṣikeśa · Vidhyamitra","description":"December 11, 1913 CE for Ṛṣikeśa: Śukla Trayodaśī, sūryodaya 07:03, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1913-12-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1913-12-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/1913-12-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/1913-12-11","x-default":"https://vidhyamitra.com/city/rishikesh/1913-12-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T05:23:46.125Z","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":"2026-06-01T05:23:46.125Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T05:23:46.125Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}