{"id":"vidhyamitra:city-day:rishikesh:2107-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2107-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2107-02-01","date_display":"February 1, 2107 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":2107,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490656.770833,"kali_year":5208,"ahargana":1902191.2708,"sun":{"sidereal_longitude":285.9119,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":17.9984,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.0865,"elapsed_within_tithi_degrees":8.0865},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.9984,"elapsed_within_degrees":4.6651},"yoga":{"number":23,"name":"Śubha","sum_longitude":303.9103},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2107,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2490656.770833,"ahargana":1902191.2708,"kali_year":5208,"ayanamsa_lahiri":25.3489,"grahas":{"sun":{"sidereal_longitude":286.159853,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":14.43675300000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false,"latitude":-0.411},"mars":{"sidereal_longitude":296.40965300000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":286.775853,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":10.727953000000014,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":243.40155300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":255.98625300000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":192.7525,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":12.7525,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":2107,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490656.770833,"kali_year":5208,"ahargana":1902191.2708,"sun":{"sidereal_longitude":285.9119,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":17.9984,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.0865,"elapsed_within_tithi_degrees":8.0865},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.9984,"elapsed_within_degrees":4.6651},"yoga":{"number":23,"name":"Śubha","sum_longitude":303.9103},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.411,"elongation":92.087},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.411,"opposition_distance":87.913}},"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":"07:08","sunsetLocal":"17:53","solarNoonLocal":"12:31","dayLengthHours":10.74790130887884,"dayLengthDisplay":"10 Hours 44 Mins 52 Secs","nightLengthDisplay":"13 Hours 15 Mins 08 Secs","moonriseLocal":"11:46","moonsetLocal":"01:02","rahuKala":{"name":"Rāhu Kāla","start":"15:12","end":"16:32","startHours":15.197291129176303,"endHours":16.540778792786156,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:49","end":"11:10","startHours":9.823340474736883,"endHours":11.166828138346737,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"13:51","startHours":12.510315801956594,"endHours":13.853803465566447,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.644208786255568,"endHours":10.002472163218197,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.584194368720458,"endHours":7.87080507029056,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:52","startHours":12.152052424993967,"endHours":12.868579178919221,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:42","end":"06:25","startHours":5.703311639666661,"endHours":6.419838393591917,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:14","end":"07:08","startHours":6.240706705110603,"endHours":7.136365147517173,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:18","end":"15:01","startHours":14.301632686769732,"endHours":15.018159440694989,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:41","end":"18:05","startHours":17.684266456396013,"endHours":18.084266456396012,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:53","end":"18:20","startHours":17.884266456396013,"endHours":18.3320956775993,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:38","end":"19:23","startHours":17.634266456396013,"endHours":19.384266456396013,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:52","startHours":24.152052424993965,"endHours":24.868579178919223,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:08","end":"08:29","startHours":7.136365147517173,"endHours":8.479852811127028,"quality":"inauspicious"},{"name":"Udveg","start":"08:29","end":"09:49","startHours":8.479852811127028,"endHours":9.823340474736883,"quality":"inauspicious"},{"name":"Chala","start":"09:49","end":"11:10","startHours":9.823340474736883,"endHours":11.166828138346737,"quality":"neutral"},{"name":"Labha","start":"11:10","end":"12:31","startHours":11.166828138346737,"endHours":12.510315801956594,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"13:51","startHours":12.510315801956594,"endHours":13.853803465566447,"quality":"auspicious"},{"name":"Kāla","start":"13:51","end":"15:12","startHours":13.853803465566447,"endHours":15.197291129176303,"quality":"inauspicious"},{"name":"Śubha","start":"15:12","end":"16:32","startHours":15.197291129176303,"endHours":16.540778792786156,"quality":"auspicious"},{"name":"Roga","start":"16:32","end":"17:53","startHours":16.540778792786156,"endHours":17.884266456396013,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:53","end":"19:32","startHours":17.884266456396013,"endHours":19.540778792786156,"quality":"inauspicious"},{"name":"Śubha","start":"19:32","end":"21:12","startHours":19.540778792786156,"endHours":21.197291129176303,"quality":"auspicious"},{"name":"Roga","start":"21:12","end":"22:51","startHours":21.197291129176303,"endHours":22.853803465566447,"quality":"inauspicious"},{"name":"Udveg","start":"22:51","end":"00:31","startHours":22.853803465566447,"endHours":24.510315801956594,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"02:10","startHours":24.510315801956594,"endHours":26.166828138346737,"quality":"neutral"},{"name":"Labha","start":"02:10","end":"03:49","startHours":26.166828138346737,"endHours":27.82334047473688,"quality":"auspicious"},{"name":"Amṛta","start":"03:49","end":"05:29","startHours":27.82334047473688,"endHours":29.479852811127028,"quality":"auspicious"},{"name":"Kāla","start":"05:29","end":"07:08","startHours":29.479852811127028,"endHours":31.136365147517175,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:08","end":"08:08","startHours":7.136365147517173,"endHours":8.136365147517173,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:08","end":"09:08","startHours":8.136365147517173,"endHours":9.136365147517173,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:08","end":"10:08","startHours":9.136365147517173,"endHours":10.136365147517173,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:08","end":"11:08","startHours":10.136365147517173,"endHours":11.136365147517173,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:08","end":"12:08","startHours":11.136365147517173,"endHours":12.136365147517173,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:08","end":"13:08","startHours":12.136365147517173,"endHours":13.136365147517173,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:08","end":"14:08","startHours":13.136365147517173,"endHours":14.136365147517173,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:08","end":"15:08","startHours":14.136365147517173,"endHours":15.136365147517173,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:08","end":"16:08","startHours":15.136365147517173,"endHours":16.136365147517175,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:08","end":"17:08","startHours":16.136365147517175,"endHours":17.136365147517175,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:08","end":"18:08","startHours":17.136365147517175,"endHours":18.136365147517175,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:08","end":"19:08","startHours":18.136365147517175,"endHours":19.136365147517175,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:08","end":"20:08","startHours":19.136365147517175,"endHours":20.136365147517175,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:08","end":"21:08","startHours":20.136365147517175,"endHours":21.136365147517175,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:08","end":"22:08","startHours":21.136365147517175,"endHours":22.136365147517175,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:08","end":"23:08","startHours":22.136365147517175,"endHours":23.136365147517175,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:08","end":"00:08","startHours":23.136365147517175,"endHours":24.136365147517175,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:08","end":"01:08","startHours":24.136365147517175,"endHours":25.136365147517175,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:08","end":"02:08","startHours":25.136365147517175,"endHours":26.136365147517175,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:08","end":"03:08","startHours":26.136365147517175,"endHours":27.136365147517175,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:08","end":"04:08","startHours":27.136365147517175,"endHours":28.136365147517175,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:08","end":"05:08","startHours":28.136365147517175,"endHours":29.136365147517175,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:08","end":"06:08","startHours":29.136365147517175,"endHours":30.136365147517175,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:08","end":"07:08","startHours":30.136365147517175,"endHours":31.136365147517175,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","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":-17.32813891375246,"eotMinutes":-13.689348117395623,"ayanamsa":25.3489}},"calendars":{"vikram_samvat":2164,"vikram_samvatsara":"Vikrama","saka_samvat":2029,"saka_samvatsara":"Prabhava","bengali_samvat":1514,"malayalam_era":1283,"nanakshahi_year":638,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Aṣṭamī · Vikram 2164 Vikrama · Śaka 2029 Prabhava"},"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":"bhishma-ashtami","name":"Bhīṣmāṣṭamī","name_sanskrit":"भीष्माष्टमी","tradition":"Pan-Hindu","associated_deity":"Bhīṣma Pitāmaha","significance":"Bhīṣma's mahaprasthāna anniversary (Māgha Śukla 8); Bhīṣma-tarpaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Mahābhārata, Anuśāsana Parva"]},{"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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"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 1, 2107 CE · Ṛṣikeśa · Vidhyamitra","description":"February 1, 2107 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 07:08, sūryāsta 17:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2107-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2107-02-01","sa":"https://sa.vidhyamitra.com/city/rishikesh/2107-02-01","hi":"https://hi.vidhyamitra.com/city/rishikesh/2107-02-01","x-default":"https://vidhyamitra.com/city/rishikesh/2107-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T23:05:44.037Z","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":"2026-05-20T23:05:44.037Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T23:05:44.037Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}