{"id":"vidhyamitra:city-day:rishikesh:2031-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2031-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-01-30","date_display":"January 30, 2031 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":2031,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462896.770833,"kali_year":5132,"ahargana":1874431.2708,"sun":{"sidereal_longitude":285.5698,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":10.3118,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":84.7421,"elapsed_within_tithi_degrees":0.7421},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.3118,"elapsed_within_degrees":10.3118},"yoga":{"number":23,"name":"Śubha","sum_longitude":295.8816},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2031,"month":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462896.770833,"ahargana":1874431.2708,"kali_year":5132,"ayanamsa_lahiri":24.2872,"grahas":{"sun":{"sidereal_longitude":285.642789,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":12.504288999999972,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":2.4688},"mars":{"sidereal_longitude":191.74998900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":270.887289,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":236.97188900000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":309.5889890000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":37.57318900000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":223.6109,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":43.6109,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2031,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462896.770833,"kali_year":5132,"ahargana":1874431.2708,"sun":{"sidereal_longitude":285.5698,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":10.3118,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":84.7421,"elapsed_within_tithi_degrees":0.7421},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.3118,"elapsed_within_degrees":10.3118},"yoga":{"number":23,"name":"Śubha","sum_longitude":295.8816},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.469,"elongation":84.742},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.469,"opposition_distance":95.258}},"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":"07:09","sunsetLocal":"17:52","solarNoonLocal":"12:30","dayLengthHours":10.711211080342807,"dayLengthDisplay":"10 Hours 42 Mins 40 Secs","nightLengthDisplay":"13 Hours 17 Mins 20 Secs","moonriseLocal":"11:42","moonsetLocal":"00:53","rahuKala":{"name":"Rāhu Kāla","start":"13:51","end":"15:11","startHours":13.843680484638924,"endHours":15.182581869681776,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:09","end":"08:29","startHours":7.14917355942467,"endHours":8.48807494446752,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:50","end":"11:10","startHours":9.826976329510373,"endHours":11.165877714553222,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:00","startHours":9.648456144837992,"endHours":10.005496514182752,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:36","end":"07:53","startHours":7.595474021105621,"endHours":7.881106316581429,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:52","startHours":12.147738730251314,"endHours":12.861819468940835,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:43","end":"06:26","startHours":5.721012082045629,"endHours":6.43509282073515,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:15","end":"07:09","startHours":6.25657263606277,"endHours":7.14917355942467,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:17","end":"15:00","startHours":14.289980946319876,"endHours":15.004061685009397,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:40","end":"18:04","startHours":17.66038463976748,"endHours":18.060384639767477,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:52","end":"18:18","startHours":17.860384639767478,"endHours":18.30668510144843,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:37","end":"19:22","startHours":17.610384639767478,"endHours":19.360384639767478,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:52","startHours":24.147738730251316,"endHours":24.861819468940833,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:09","end":"08:29","startHours":7.14917355942467,"endHours":8.48807494446752,"quality":"auspicious"},{"name":"Roga","start":"08:29","end":"09:50","startHours":8.48807494446752,"endHours":9.826976329510373,"quality":"inauspicious"},{"name":"Udveg","start":"09:50","end":"11:10","startHours":9.826976329510373,"endHours":11.165877714553222,"quality":"inauspicious"},{"name":"Chala","start":"11:10","end":"12:30","startHours":11.165877714553222,"endHours":12.504779099596075,"quality":"neutral"},{"name":"Labha","start":"12:30","end":"13:51","startHours":12.504779099596075,"endHours":13.843680484638924,"quality":"auspicious"},{"name":"Amṛta","start":"13:51","end":"15:11","startHours":13.843680484638924,"endHours":15.182581869681776,"quality":"auspicious"},{"name":"Kāla","start":"15:11","end":"16:31","startHours":15.182581869681776,"endHours":16.521483254724625,"quality":"inauspicious"},{"name":"Śubha","start":"16:31","end":"17:52","startHours":16.521483254724625,"endHours":17.860384639767478,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:52","end":"19:31","startHours":17.860384639767478,"endHours":19.52148325472463,"quality":"auspicious"},{"name":"Kāla","start":"19:31","end":"21:11","startHours":19.52148325472463,"endHours":21.182581869681776,"quality":"inauspicious"},{"name":"Śubha","start":"21:11","end":"22:51","startHours":21.182581869681776,"endHours":22.843680484638924,"quality":"auspicious"},{"name":"Roga","start":"22:51","end":"00:30","startHours":22.843680484638924,"endHours":24.504779099596075,"quality":"inauspicious"},{"name":"Udveg","start":"00:30","end":"02:10","startHours":24.504779099596075,"endHours":26.165877714553226,"quality":"inauspicious"},{"name":"Chala","start":"02:10","end":"03:50","startHours":26.165877714553226,"endHours":27.826976329510373,"quality":"neutral"},{"name":"Labha","start":"03:50","end":"05:29","startHours":27.826976329510373,"endHours":29.48807494446752,"quality":"auspicious"},{"name":"Amṛta","start":"05:29","end":"07:09","startHours":29.48807494446752,"endHours":31.14917355942467,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:09","end":"08:09","startHours":7.14917355942467,"endHours":8.149173559424671,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:09","end":"09:09","startHours":8.149173559424671,"endHours":9.149173559424671,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:09","end":"10:09","startHours":9.149173559424671,"endHours":10.149173559424671,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:09","end":"11:09","startHours":10.149173559424671,"endHours":11.149173559424671,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:09","end":"12:09","startHours":11.149173559424671,"endHours":12.149173559424671,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:09","end":"13:09","startHours":12.149173559424671,"endHours":13.149173559424671,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:09","end":"14:09","startHours":13.149173559424671,"endHours":14.149173559424671,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:09","end":"15:09","startHours":14.149173559424671,"endHours":15.149173559424671,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:09","end":"16:09","startHours":15.149173559424671,"endHours":16.14917355942467,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:09","end":"17:09","startHours":16.14917355942467,"endHours":17.14917355942467,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:09","end":"18:09","startHours":17.14917355942467,"endHours":18.14917355942467,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:09","end":"19:09","startHours":18.14917355942467,"endHours":19.14917355942467,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:09","end":"20:09","startHours":19.14917355942467,"endHours":20.14917355942467,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:09","end":"21:09","startHours":20.14917355942467,"endHours":21.14917355942467,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:09","end":"22:09","startHours":21.14917355942467,"endHours":22.14917355942467,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:09","end":"23:09","startHours":22.14917355942467,"endHours":23.14917355942467,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:09","end":"00:09","startHours":23.14917355942467,"endHours":24.14917355942467,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:09","end":"01:09","startHours":24.14917355942467,"endHours":25.14917355942467,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:09","end":"02:09","startHours":25.14917355942467,"endHours":26.14917355942467,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:09","end":"03:09","startHours":26.14917355942467,"endHours":27.14917355942467,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:09","end":"04:09","startHours":27.14917355942467,"endHours":28.14917355942467,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:09","end":"05:09","startHours":28.14917355942467,"endHours":29.14917355942467,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:09","end":"06:09","startHours":29.14917355942467,"endHours":30.14917355942467,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:09","end":"07:09","startHours":30.14917355942467,"endHours":31.14917355942467,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","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":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","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":-17.75773722515161,"eotMinutes":-13.357145975764517,"ayanamsa":24.2872}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Aṣṭamī · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"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":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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},{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 January 30, 2031 CE · Ṛṣikeśa · Vidhyamitra","description":"January 30, 2031 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 07:09, sūryāsta 17:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2031-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2031-01-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/2031-01-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/2031-01-30","x-default":"https://vidhyamitra.com/city/rishikesh/2031-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T04:59:21.956Z","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":"2026-05-15T04:59:21.956Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T04:59:21.956Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}