{"id":"vidhyamitra:city-day:rishikesh:1999-12-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1999-12-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1999-12-11","date_display":"December 11, 1999 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":1999,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451523.770833,"kali_year":5101,"ahargana":1863058.2708,"sun":{"sidereal_longitude":234.2613,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":270.9437,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":36.6824,"elapsed_within_tithi_degrees":0.6824},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.9437,"elapsed_within_degrees":4.277},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":145.205},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1999,"month":12,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451523.770833,"ahargana":1863058.2708,"kali_year":5101,"ayanamsa_lahiri":23.8522,"grahas":{"sun":{"sidereal_longitude":234.68512099999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":268.295621,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false,"latitude":1.1835},"mars":{"sidereal_longitude":287.49042099999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":215.973521,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":1.3244210000000294,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":192.10592099999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":17.275920999999983,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":106.2071,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":286.2071,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1999,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451523.770833,"kali_year":5101,"ahargana":1863058.2708,"sun":{"sidereal_longitude":234.2613,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":270.9437,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":36.6824,"elapsed_within_tithi_degrees":0.6824},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.9437,"elapsed_within_degrees":4.277},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":145.205},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.184,"elongation":36.682},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.184,"opposition_distance":143.318}},"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":10.25065222089603,"dayLengthDisplay":"10 Hours 15 Mins 02 Secs","nightLengthDisplay":"13 Hours 44 Mins 58 Secs","moonriseLocal":"09:15","moonsetLocal":"19:35","rahuKala":{"name":"Rāhu Kāla","start":"09:37","end":"10:54","startHours":9.619695566700447,"endHours":10.90102709431245,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:28","end":"14:45","startHours":13.463690149536458,"endHours":14.745021677148461,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:03","end":"08:20","startHours":7.05703251147644,"endHours":8.338364039088443,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:47","startHours":9.448851363018846,"endHours":9.790539770382049,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:45","startHours":7.484143020680442,"endHours":7.7574937465710025,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:31","startHours":11.840670214561253,"endHours":12.524047029287654,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:22","startHours":5.6902788820236365,"endHours":6.373655696750038,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:03","startHours":6.202811493068438,"endHours":7.05703251147644,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:34","startHours":13.89080065874046,"endHours":14.574177473466863,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.10768473237247,"endHours":17.507684732372468,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:44","startHours":17.30768473237247,"endHours":17.73479524157647,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.05768473237247,"endHours":18.80768473237247,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:31","startHours":23.840670214561253,"endHours":24.524047029287654,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:03","end":"08:20","startHours":7.05703251147644,"endHours":8.338364039088443,"quality":"inauspicious"},{"name":"Śubha","start":"08:20","end":"09:37","startHours":8.338364039088443,"endHours":9.619695566700447,"quality":"auspicious"},{"name":"Roga","start":"09:37","end":"10:54","startHours":9.619695566700447,"endHours":10.90102709431245,"quality":"inauspicious"},{"name":"Udveg","start":"10:54","end":"12:11","startHours":10.90102709431245,"endHours":12.182358621924454,"quality":"inauspicious"},{"name":"Chala","start":"12:11","end":"13:28","startHours":12.182358621924454,"endHours":13.463690149536458,"quality":"neutral"},{"name":"Labha","start":"13:28","end":"14:45","startHours":13.463690149536458,"endHours":14.745021677148461,"quality":"auspicious"},{"name":"Amṛta","start":"14:45","end":"16:02","startHours":14.745021677148461,"endHours":16.026353204760465,"quality":"auspicious"},{"name":"Kāla","start":"16:02","end":"17:18","startHours":16.026353204760465,"endHours":17.30768473237247,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:18","end":"19:02","startHours":17.30768473237247,"endHours":19.026353204760465,"quality":"auspicious"},{"name":"Amṛta","start":"19:02","end":"20:45","startHours":19.026353204760465,"endHours":20.74502167714846,"quality":"auspicious"},{"name":"Kāla","start":"20:45","end":"22:28","startHours":20.74502167714846,"endHours":22.463690149536458,"quality":"inauspicious"},{"name":"Śubha","start":"22:28","end":"00:11","startHours":22.463690149536458,"endHours":24.182358621924454,"quality":"auspicious"},{"name":"Roga","start":"00:11","end":"01:54","startHours":24.182358621924454,"endHours":25.90102709431245,"quality":"inauspicious"},{"name":"Udveg","start":"01:54","end":"03:37","startHours":25.90102709431245,"endHours":27.619695566700447,"quality":"inauspicious"},{"name":"Chala","start":"03:37","end":"05:20","startHours":27.619695566700447,"endHours":29.338364039088443,"quality":"neutral"},{"name":"Labha","start":"05:20","end":"07:03","startHours":29.338364039088443,"endHours":31.05703251147644,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.05703251147644,"endHours":8.05703251147644,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.05703251147644,"endHours":9.05703251147644,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.05703251147644,"endHours":10.05703251147644,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.05703251147644,"endHours":11.05703251147644,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.05703251147644,"endHours":12.05703251147644,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.05703251147644,"endHours":13.05703251147644,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.05703251147644,"endHours":14.05703251147644,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.05703251147644,"endHours":15.05703251147644,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.05703251147644,"endHours":16.05703251147644,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.05703251147644,"endHours":17.05703251147644,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.05703251147644,"endHours":18.05703251147644,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.05703251147644,"endHours":19.05703251147644,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.05703251147644,"endHours":20.05703251147644,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.05703251147644,"endHours":21.05703251147644,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.05703251147644,"endHours":22.05703251147644,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.05703251147644,"endHours":23.05703251147644,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.05703251147644,"endHours":24.05703251147644,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.05703251147644,"endHours":25.05703251147644,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.05703251147644,"endHours":26.05703251147644,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.05703251147644,"endHours":27.05703251147644,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.05703251147644,"endHours":28.05703251147644,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.05703251147644,"endHours":29.05703251147644,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.05703251147644,"endHours":30.05703251147644,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.05703251147644,"endHours":31.05703251147644,"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Mṛtyu","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":-22.94202009173243,"eotMinutes":5.988082684532823,"ayanamsa":23.8522}},"calendars":{"vikram_samvat":2056,"vikram_samvatsara":"Nandana","saka_samvat":1921,"saka_samvatsara":"Pramāthi","bengali_samvat":1406,"malayalam_era":1175,"nanakshahi_year":530,"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 Caturthī · Vikram 2056 Nandana · Śaka 1921 Pramāthi"},"festivals":[{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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 December 11, 1999 CE · Ṛṣikeśa · Vidhyamitra","description":"December 11, 1999 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 07:03, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1999-12-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1999-12-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/1999-12-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/1999-12-11","x-default":"https://vidhyamitra.com/city/rishikesh/1999-12-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T20:07:44.685Z","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":"2026-06-01T20:07:44.685Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T20:07:44.685Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}