{"id":"vidhyamitra:city-day:rishikesh:2129-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2129-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2129-02-13","date_display":"February 13, 2129 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":2129,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2498704.770833,"kali_year":5230,"ahargana":1910239.2708,"sun":{"sidereal_longitude":298.4656,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":221.9073,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.4417,"elapsed_within_tithi_degrees":7.4417},"nakshatra":{"number":17,"name":"Anurādhā","pada":3,"moon_longitude":221.9073,"elapsed_within_degrees":8.574},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":160.3729},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2129,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2498704.770833,"ahargana":1910239.2708,"kali_year":5230,"ayanamsa_lahiri":25.6567,"grahas":{"sun":{"sidereal_longitude":298.68656,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":218.94036000000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":4.4787},"mars":{"sidereal_longitude":228.66625999999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":282.61816,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":320.77376000000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":309.23106000000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":174.60285999999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":126.3307,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":306.3307,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2129,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2498704.770833,"kali_year":5230,"ahargana":1910239.2708,"sun":{"sidereal_longitude":298.4656,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":221.9073,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.4417,"elapsed_within_tithi_degrees":7.4417},"nakshatra":{"number":17,"name":"Anurādhā","pada":3,"moon_longitude":221.9073,"elapsed_within_degrees":8.574},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":160.3729},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.479,"elongation":76.558},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.479,"opposition_distance":103.442}},"eclipse_window_40days":[{"offset_days":6,"type":"solar","occurs":true,"moon_latitude":-0.118,"elongation":2.953}]},"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":"06:59","sunsetLocal":"18:04","solarNoonLocal":"12:32","dayLengthHours":11.074759902499286,"dayLengthDisplay":"11 Hours 04 Mins 29 Secs","nightLengthDisplay":"12 Hours 55 Mins 31 Secs","moonriseLocal":"02:01","moonsetLocal":"12:24","rahuKala":{"name":"Rāhu Kāla","start":"16:41","end":"18:04","startHours":16.6785203844476,"endHours":18.062865372260013,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:32","end":"13:55","startHours":12.52548542101037,"endHours":13.909830408822781,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:18","end":"16:41","startHours":15.294175396635191,"endHours":16.6785203844476,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:56","startHours":9.572216113677227,"endHours":9.94137477709387,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:27","end":"07:45","startHours":7.449553799031531,"endHours":7.744880729764845,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.156326757593726,"endHours":12.894644084427012,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:31","end":"06:15","startHours":5.511470816094156,"endHours":6.249788142927441,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:04","end":"06:59","startHours":6.0652088112191205,"endHours":6.988105469760727,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:07","startHours":14.371278738093585,"endHours":15.10959606492687,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:52","end":"18:16","startHours":17.862865372260014,"endHours":18.262865372260013,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:04","end":"18:31","startHours":18.062865372260013,"endHours":18.52431370153082,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:49","end":"19:34","startHours":17.812865372260013,"endHours":19.562865372260013,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.156326757593728,"endHours":24.89464408442701,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:59","end":"08:22","startHours":6.988105469760727,"endHours":8.372450457573137,"quality":"inauspicious"},{"name":"Chala","start":"08:22","end":"09:45","startHours":8.372450457573137,"endHours":9.75679544538555,"quality":"neutral"},{"name":"Labha","start":"09:45","end":"11:08","startHours":9.75679544538555,"endHours":11.14114043319796,"quality":"auspicious"},{"name":"Amṛta","start":"11:08","end":"12:32","startHours":11.14114043319796,"endHours":12.52548542101037,"quality":"auspicious"},{"name":"Kāla","start":"12:32","end":"13:55","startHours":12.52548542101037,"endHours":13.909830408822781,"quality":"inauspicious"},{"name":"Śubha","start":"13:55","end":"15:18","startHours":13.909830408822781,"endHours":15.294175396635191,"quality":"auspicious"},{"name":"Roga","start":"15:18","end":"16:41","startHours":15.294175396635191,"endHours":16.6785203844476,"quality":"inauspicious"},{"name":"Udveg","start":"16:41","end":"18:04","startHours":16.6785203844476,"endHours":18.062865372260013,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:04","end":"19:41","startHours":18.062865372260013,"endHours":19.6785203844476,"quality":"auspicious"},{"name":"Roga","start":"19:41","end":"21:18","startHours":19.6785203844476,"endHours":21.294175396635193,"quality":"inauspicious"},{"name":"Udveg","start":"21:18","end":"22:55","startHours":21.294175396635193,"endHours":22.90983040882278,"quality":"inauspicious"},{"name":"Chala","start":"22:55","end":"00:32","startHours":22.90983040882278,"endHours":24.52548542101037,"quality":"neutral"},{"name":"Labha","start":"00:32","end":"02:08","startHours":24.52548542101037,"endHours":26.14114043319796,"quality":"auspicious"},{"name":"Amṛta","start":"02:08","end":"03:45","startHours":26.14114043319796,"endHours":27.75679544538555,"quality":"auspicious"},{"name":"Kāla","start":"03:45","end":"05:22","startHours":27.75679544538555,"endHours":29.372450457573137,"quality":"inauspicious"},{"name":"Śubha","start":"05:22","end":"06:59","startHours":29.372450457573137,"endHours":30.988105469760725,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:59","end":"07:59","startHours":6.988105469760727,"endHours":7.988105469760727,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:59","end":"08:59","startHours":7.988105469760727,"endHours":8.988105469760727,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:59","end":"09:59","startHours":8.988105469760727,"endHours":9.988105469760727,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:59","end":"10:59","startHours":9.988105469760727,"endHours":10.988105469760727,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:59","end":"11:59","startHours":10.988105469760727,"endHours":11.988105469760727,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:59","end":"12:59","startHours":11.988105469760727,"endHours":12.988105469760727,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:59","end":"13:59","startHours":12.988105469760727,"endHours":13.988105469760727,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:59","end":"14:59","startHours":13.988105469760727,"endHours":14.988105469760727,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:59","end":"15:59","startHours":14.988105469760727,"endHours":15.988105469760727,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:59","end":"16:59","startHours":15.988105469760727,"endHours":16.988105469760725,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:59","end":"17:59","startHours":16.988105469760725,"endHours":17.988105469760725,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:59","end":"18:59","startHours":17.988105469760725,"endHours":18.988105469760725,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:59","end":"19:59","startHours":18.988105469760725,"endHours":19.988105469760725,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:59","end":"20:59","startHours":19.988105469760725,"endHours":20.988105469760725,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:59","end":"21:59","startHours":20.988105469760725,"endHours":21.988105469760725,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:59","end":"22:59","startHours":21.988105469760725,"endHours":22.988105469760725,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:59","end":"23:59","startHours":22.988105469760725,"endHours":23.988105469760725,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:59","end":"00:59","startHours":23.988105469760725,"endHours":24.988105469760725,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:59","end":"01:59","startHours":24.988105469760725,"endHours":25.988105469760725,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:59","end":"02:59","startHours":25.988105469760725,"endHours":26.988105469760725,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:59","end":"03:59","startHours":26.988105469760725,"endHours":27.988105469760725,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:59","end":"04:59","startHours":27.988105469760725,"endHours":28.988105469760725,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:59","end":"05:59","startHours":28.988105469760725,"endHours":29.988105469760725,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:59","end":"06:59","startHours":29.988105469760725,"endHours":30.988105469760725,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-13.405975057101099,"eotMinutes":-14.599525260622107,"ayanamsa":25.6567}},"calendars":{"vikram_samvat":2186,"vikram_samvatsara":"Śubhakṛt","saka_samvat":2051,"saka_samvatsara":"Virodhi","bengali_samvat":1536,"malayalam_era":1305,"nanakshahi_year":660,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Navamī · Vikram 2186 Śubhakṛt · Śaka 2051 Virodhi"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 13, 2129 CE · Ṛṣikeśa · Vidhyamitra","description":"February 13, 2129 CE for Ṛṣikeśa: Kṛṣṇa Navamī, sūryodaya 06:59, sūryāsta 18:04.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2129-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2129-02-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/2129-02-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/2129-02-13","x-default":"https://vidhyamitra.com/city/rishikesh/2129-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T06:02:37.322Z","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":"2026-05-23T06:02:37.322Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T06:02:37.322Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}