{"id":"vidhyamitra:city-day:rishikesh:2027-02-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2027-02-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2027-02-10","date_display":"February 10, 2027 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":2027,"month":2,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461446.770833,"kali_year":5128,"ahargana":1872981.2708,"sun":{"sidereal_longitude":296.8306,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":337.0993,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.2688,"elapsed_within_tithi_degrees":4.2688},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.0993,"elapsed_within_degrees":3.766},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.9299},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2027,"month":2,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461446.770833,"ahargana":1872981.2708,"kali_year":5128,"ayanamsa_lahiri":24.2317,"grahas":{"sun":{"sidereal_longitude":296.82408999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":334.72019,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":2.685},"mars":{"sidereal_longitude":129.83438999999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":true},"mercury":{"sidereal_longitude":311.41148999999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":117.71469000000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":252.75949000000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":346.92049,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":300.4389,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":120.4389,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"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":2027,"month":2,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461446.770833,"kali_year":5128,"ahargana":1872981.2708,"sun":{"sidereal_longitude":296.8306,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":337.0993,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.2688,"elapsed_within_tithi_degrees":4.2688},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.0993,"elapsed_within_degrees":3.766},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.9299},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.685,"elongation":40.269},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.685,"opposition_distance":139.731}},"eclipse_window_40days":[{"offset_days":11,"type":"lunar","occurs":true,"moon_latitude":-0.791,"opposition_distance":1.992}]},"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":"07:02","sunsetLocal":"18:01","solarNoonLocal":"12:31","dayLengthHours":10.986785679216712,"dayLengthDisplay":"10 Hours 59 Mins 12 Secs","nightLengthDisplay":"13 Hours 00 Mins 48 Secs","moonriseLocal":"09:01","moonsetLocal":"21:05","rahuKala":{"name":"Rāhu Kāla","start":"12:31","end":"13:54","startHours":12.524604758192073,"endHours":13.89795296809416,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:24","end":"09:47","startHours":8.404560128485805,"endHours":9.777908338387894,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:09","end":"12:31","startHours":11.151256548289982,"endHours":12.524604758192073,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:58","startHours":9.594795243734282,"endHours":9.961021433041505,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:29","end":"07:47","startHours":7.488994655217745,"endHours":7.781975606663524,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.158378568884848,"endHours":12.890830947499294,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:34","end":"06:18","startHours":5.566307161354821,"endHours":6.298759539969268,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:07","end":"07:02","startHours":6.115646445315656,"endHours":7.031211918583716,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:05","startHours":14.35573570472819,"endHours":15.088188083342637,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:49","end":"18:13","startHours":17.817997597800428,"endHours":18.217997597800426,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:01","end":"18:29","startHours":18.017997597800427,"endHours":18.475780334434457,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:46","end":"19:31","startHours":17.767997597800427,"endHours":19.517997597800427,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.158378568884846,"endHours":24.890830947499293,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:02","end":"08:24","startHours":7.031211918583716,"endHours":8.404560128485805,"quality":"auspicious"},{"name":"Amṛta","start":"08:24","end":"09:47","startHours":8.404560128485805,"endHours":9.777908338387894,"quality":"auspicious"},{"name":"Kāla","start":"09:47","end":"11:09","startHours":9.777908338387894,"endHours":11.151256548289982,"quality":"inauspicious"},{"name":"Śubha","start":"11:09","end":"12:31","startHours":11.151256548289982,"endHours":12.524604758192073,"quality":"auspicious"},{"name":"Roga","start":"12:31","end":"13:54","startHours":12.524604758192073,"endHours":13.89795296809416,"quality":"inauspicious"},{"name":"Udveg","start":"13:54","end":"15:16","startHours":13.89795296809416,"endHours":15.27130117799625,"quality":"inauspicious"},{"name":"Chala","start":"15:16","end":"16:39","startHours":15.27130117799625,"endHours":16.64464938789834,"quality":"neutral"},{"name":"Labha","start":"16:39","end":"18:01","startHours":16.64464938789834,"endHours":18.017997597800427,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:01","end":"19:39","startHours":18.017997597800427,"endHours":19.644649387898337,"quality":"inauspicious"},{"name":"Chala","start":"19:39","end":"21:16","startHours":19.644649387898337,"endHours":21.27130117799625,"quality":"neutral"},{"name":"Labha","start":"21:16","end":"22:54","startHours":21.27130117799625,"endHours":22.89795296809416,"quality":"auspicious"},{"name":"Amṛta","start":"22:54","end":"00:31","startHours":22.89795296809416,"endHours":24.52460475819207,"quality":"auspicious"},{"name":"Kāla","start":"00:31","end":"02:09","startHours":24.52460475819207,"endHours":26.151256548289982,"quality":"inauspicious"},{"name":"Śubha","start":"02:09","end":"03:47","startHours":26.151256548289982,"endHours":27.777908338387892,"quality":"auspicious"},{"name":"Roga","start":"03:47","end":"05:24","startHours":27.777908338387892,"endHours":29.404560128485805,"quality":"inauspicious"},{"name":"Udveg","start":"05:24","end":"07:02","startHours":29.404560128485805,"endHours":31.031211918583715,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:02","end":"08:02","startHours":7.031211918583716,"endHours":8.031211918583715,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:02","end":"09:02","startHours":8.031211918583715,"endHours":9.031211918583715,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:02","end":"10:02","startHours":9.031211918583715,"endHours":10.031211918583715,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:02","end":"11:02","startHours":10.031211918583715,"endHours":11.031211918583715,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:02","end":"12:02","startHours":11.031211918583715,"endHours":12.031211918583715,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:02","end":"13:02","startHours":12.031211918583715,"endHours":13.031211918583715,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:02","end":"14:02","startHours":13.031211918583715,"endHours":14.031211918583715,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:02","end":"15:02","startHours":14.031211918583715,"endHours":15.031211918583715,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:02","end":"16:02","startHours":15.031211918583715,"endHours":16.031211918583715,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:02","end":"17:02","startHours":16.031211918583715,"endHours":17.031211918583715,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:02","end":"18:02","startHours":17.031211918583715,"endHours":18.031211918583715,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:02","end":"19:02","startHours":18.031211918583715,"endHours":19.031211918583715,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:02","end":"20:02","startHours":19.031211918583715,"endHours":20.031211918583715,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:02","end":"21:02","startHours":20.031211918583715,"endHours":21.031211918583715,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:02","end":"22:02","startHours":21.031211918583715,"endHours":22.031211918583715,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:02","end":"23:02","startHours":22.031211918583715,"endHours":23.031211918583715,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:02","end":"00:02","startHours":23.031211918583715,"endHours":24.031211918583715,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:02","end":"01:02","startHours":24.031211918583715,"endHours":25.031211918583715,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:02","end":"02:02","startHours":25.031211918583715,"endHours":26.031211918583715,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:02","end":"03:02","startHours":26.031211918583715,"endHours":27.031211918583715,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:02","end":"04:02","startHours":27.031211918583715,"endHours":28.031211918583715,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:02","end":"05:02","startHours":28.031211918583715,"endHours":29.031211918583715,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:02","end":"06:02","startHours":29.031211918583715,"endHours":30.031211918583715,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:02","end":"07:02","startHours":30.031211918583715,"endHours":31.031211918583715,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"South-West","anandadiYoga":{"name":"Mudgara","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":-14.477515529620353,"eotMinutes":-14.546685491524224,"ayanamsa":24.2317}},"calendars":{"vikram_samvat":2084,"vikram_samvatsara":"Raudra","saka_samvat":1949,"saka_samvatsara":"Plavaṅga","bengali_samvat":1434,"malayalam_era":1203,"nanakshahi_year":558,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 2084 Raudra · Śaka 1949 Plavaṅga"},"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},{"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":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 10, 2027 CE · Ṛṣikeśa · Vidhyamitra","description":"February 10, 2027 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 07:02, sūryāsta 18:01.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2027-02-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2027-02-10","sa":"https://sa.vidhyamitra.com/city/rishikesh/2027-02-10","hi":"https://hi.vidhyamitra.com/city/rishikesh/2027-02-10","x-default":"https://vidhyamitra.com/city/rishikesh/2027-02-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T00:10:45.380Z","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":"2026-05-15T00:10:45.380Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T00:10:45.380Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}