{"id":"vidhyamitra:city-day:rishikesh:1958-12-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1958-12-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1958-12-08","date_display":"December 8, 1958 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":1958,"month":12,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436545.770833,"kali_year":5060,"ahargana":1848080.2708,"sun":{"sidereal_longitude":231.8122,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":197.1575,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":325.3453,"elapsed_within_tithi_degrees":1.3453},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":197.1575,"elapsed_within_degrees":10.4908},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":68.9696},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1958,"month":12,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2436545.770833,"ahargana":1848080.2708,"kali_year":5060,"ayanamsa_lahiri":23.2793,"grahas":{"sun":{"sidereal_longitude":232.158191,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":195.052191,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":1.3402},"mars":{"sidereal_longitude":24.97419100000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":237.79429099999993,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":206.52019100000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":239.24949100000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":243.83739100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":179.8137,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":359.8137,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":1958,"month":12,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436545.770833,"kali_year":5060,"ahargana":1848080.2708,"sun":{"sidereal_longitude":231.8122,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":197.1575,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":325.3453,"elapsed_within_tithi_degrees":1.3453},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":197.1575,"elapsed_within_degrees":10.4908},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":68.9696},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.34,"elongation":34.655},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.34,"opposition_distance":145.345}},"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":"07:01","sunsetLocal":"17:18","solarNoonLocal":"12:10","dayLengthHours":10.2784233943346,"dayLengthDisplay":"10 Hours 16 Mins 42 Secs","nightLengthDisplay":"13 Hours 43 Mins 18 Secs","moonriseLocal":"04:12","moonsetLocal":"15:10","rahuKala":{"name":"Rāhu Kāla","start":"08:18","end":"09:35","startHours":8.306114142018957,"endHours":9.590917066310784,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:53","end":"12:10","startHours":10.875719990602608,"endHours":12.160522914894432,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:27","end":"14:44","startHours":13.445325839186259,"endHours":14.730128763478083,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:46","startHours":9.41961000973854,"endHours":9.762224122883026,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:27","end":"07:43","startHours":7.449578859157741,"endHours":7.723670149673331,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:30","startHours":11.817908801749947,"endHours":12.503137028038921,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:20","startHours":5.6508547651491865,"endHours":6.336082991438159,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:10","end":"07:01","startHours":6.164775934865917,"endHours":7.021311217727133,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:34","startHours":13.873593480616867,"endHours":14.55882170690584,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.099734612061734,"endHours":17.499734612061733,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:44","startHours":17.299734612061734,"endHours":17.728002253492342,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.049734612061734,"endHours":18.799734612061734,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:30","startHours":23.81790880174995,"endHours":24.50313702803892,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:01","end":"08:18","startHours":7.021311217727133,"endHours":8.306114142018957,"quality":"auspicious"},{"name":"Kāla","start":"08:18","end":"09:35","startHours":8.306114142018957,"endHours":9.590917066310784,"quality":"inauspicious"},{"name":"Śubha","start":"09:35","end":"10:53","startHours":9.590917066310784,"endHours":10.875719990602608,"quality":"auspicious"},{"name":"Roga","start":"10:53","end":"12:10","startHours":10.875719990602608,"endHours":12.160522914894432,"quality":"inauspicious"},{"name":"Udveg","start":"12:10","end":"13:27","startHours":12.160522914894432,"endHours":13.445325839186259,"quality":"inauspicious"},{"name":"Chala","start":"13:27","end":"14:44","startHours":13.445325839186259,"endHours":14.730128763478083,"quality":"neutral"},{"name":"Labha","start":"14:44","end":"16:01","startHours":14.730128763478083,"endHours":16.01493168776991,"quality":"auspicious"},{"name":"Amṛta","start":"16:01","end":"17:18","startHours":16.01493168776991,"endHours":17.299734612061734,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:18","end":"19:01","startHours":17.299734612061734,"endHours":19.01493168776991,"quality":"neutral"},{"name":"Labha","start":"19:01","end":"20:44","startHours":19.01493168776991,"endHours":20.730128763478085,"quality":"auspicious"},{"name":"Amṛta","start":"20:44","end":"22:27","startHours":20.730128763478085,"endHours":22.44532583918626,"quality":"auspicious"},{"name":"Kāla","start":"22:27","end":"00:10","startHours":22.44532583918626,"endHours":24.160522914894432,"quality":"inauspicious"},{"name":"Śubha","start":"00:10","end":"01:53","startHours":24.160522914894432,"endHours":25.875719990602608,"quality":"auspicious"},{"name":"Roga","start":"01:53","end":"03:35","startHours":25.875719990602608,"endHours":27.590917066310784,"quality":"inauspicious"},{"name":"Udveg","start":"03:35","end":"05:18","startHours":27.590917066310784,"endHours":29.306114142018956,"quality":"inauspicious"},{"name":"Chala","start":"05:18","end":"07:01","startHours":29.306114142018956,"endHours":31.02131121772713,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.021311217727133,"endHours":8.021311217727133,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.021311217727133,"endHours":9.021311217727133,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.021311217727133,"endHours":10.021311217727133,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.021311217727133,"endHours":11.021311217727133,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.021311217727133,"endHours":12.021311217727133,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.021311217727133,"endHours":13.021311217727133,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.021311217727133,"endHours":14.021311217727133,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.021311217727133,"endHours":15.021311217727133,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.021311217727133,"endHours":16.02131121772713,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.02131121772713,"endHours":17.02131121772713,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.02131121772713,"endHours":18.02131121772713,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.02131121772713,"endHours":19.02131121772713,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.02131121772713,"endHours":20.02131121772713,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.02131121772713,"endHours":21.02131121772713,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.02131121772713,"endHours":22.02131121772713,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.02131121772713,"endHours":23.02131121772713,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.02131121772713,"endHours":24.02131121772713,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.02131121772713,"endHours":25.02131121772713,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.02131121772713,"endHours":26.02131121772713,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.02131121772713,"endHours":27.02131121772713,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.02131121772713,"endHours":28.02131121772713,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.02131121772713,"endHours":29.02131121772713,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.02131121772713,"endHours":30.02131121772713,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.02131121772713,"endHours":31.02131121772713,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.640938530730963,"eotMinutes":7.298225106333945,"ayanamsa":23.2793}},"calendars":{"vikram_samvat":2015,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1880,"saka_samvatsara":"Vilambī","bengali_samvat":1365,"malayalam_era":1134,"nanakshahi_year":489,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","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 Kṛṣṇa Trayodaśī · Vikram 2015 Virodhakṛt · Śaka 1880 Vilambī"},"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 8, 1958 CE · Ṛṣikeśa · Vidhyamitra","description":"December 8, 1958 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 07:01, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1958-12-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1958-12-08","sa":"https://sa.vidhyamitra.com/city/rishikesh/1958-12-08","hi":"https://hi.vidhyamitra.com/city/rishikesh/1958-12-08","x-default":"https://vidhyamitra.com/city/rishikesh/1958-12-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:15:54.652Z","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":"2026-05-30T23:15:54.652Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:15:54.652Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}