{"id":"vidhyamitra:city-day:rishikesh:-3136-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/-3136-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3136-01-18","date_display":"January 18, 3137 BCE","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":-3136,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575650.770833,"kali_year":-35,"ahargana":-12814.7292,"sun":{"sidereal_longitude":332.0588,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":354.7607,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":22.7019,"elapsed_within_tithi_degrees":10.7019},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.7607,"elapsed_within_degrees":8.094},"yoga":{"number":25,"name":"Brahma","sum_longitude":326.8194},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":-3136,"month":1,"day":18,"hour":6,"minute":30,"calendar":"julian"},"julian_day":575650.770833,"ahargana":-12814.7292,"kali_year":-35,"ayanamsa_lahiri":-47.8929,"grahas":{"sun":{"sidereal_longitude":332.0588,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":354.7607,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false,"latitude":-2.6289},"mars":{"sidereal_longitude":98.6736,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":339.7678,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":10.6765,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":338.8717,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":288.146,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":138.986,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":318.986,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":-3136,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575650.770833,"kali_year":-35,"ahargana":-12814.7292,"sun":{"sidereal_longitude":332.0588,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":354.7607,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":22.7019,"elapsed_within_tithi_degrees":10.7019},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.7607,"elapsed_within_degrees":8.094},"yoga":{"number":25,"name":"Brahma","sum_longitude":326.8194},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.629,"elongation":22.702},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.629,"opposition_distance":157.298}},"eclipse_window_40days":[{"offset_days":-16,"type":"lunar","occurs":true,"moon_latitude":-0.42,"opposition_distance":1.553}]},"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":"07:19","sunsetLocal":"17:36","solarNoonLocal":"12:27","dayLengthHours":10.274520328573686,"dayLengthDisplay":"10 Hours 16 Mins 28 Secs","nightLengthDisplay":"13 Hours 43 Mins 32 Secs","moonriseLocal":"08:40","moonsetLocal":"19:16","rahuKala":{"name":"Rāhu Kāla","start":"16:18","end":"17:36","startHours":16.30759228290996,"endHours":17.591907323981673,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:27","end":"13:44","startHours":12.45464715969483,"endHours":13.73896220076654,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:01","end":"16:18","startHours":15.023277241838251,"endHours":16.30759228290996,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:43","end":"10:03","startHours":9.71477507207518,"endHours":10.057259083027636,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:45","end":"08:01","startHours":7.745492009098556,"endHours":8.019479217860521,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:48","startHours":12.112163148742374,"endHours":12.797131170647285,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:57","end":"06:38","startHours":5.947450951598161,"endHours":6.632418973503074,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:28","end":"07:19","startHours":6.461176968026845,"endHours":7.317386995407986,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:51","startHours":14.167067214457111,"endHours":14.852035236362024,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.391907323981673,"endHours":17.791907323981672,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:01","startHours":17.591907323981673,"endHours":18.02001233767224,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.341907323981673,"endHours":19.091907323981673,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:48","startHours":24.112163148742372,"endHours":24.797131170647287,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:19","end":"08:36","startHours":7.317386995407986,"endHours":8.601702036479697,"quality":"inauspicious"},{"name":"Chala","start":"08:36","end":"09:53","startHours":8.601702036479697,"endHours":9.886017077551408,"quality":"neutral"},{"name":"Labha","start":"09:53","end":"11:10","startHours":9.886017077551408,"endHours":11.170332118623119,"quality":"auspicious"},{"name":"Amṛta","start":"11:10","end":"12:27","startHours":11.170332118623119,"endHours":12.45464715969483,"quality":"auspicious"},{"name":"Kāla","start":"12:27","end":"13:44","startHours":12.45464715969483,"endHours":13.73896220076654,"quality":"inauspicious"},{"name":"Śubha","start":"13:44","end":"15:01","startHours":13.73896220076654,"endHours":15.023277241838251,"quality":"auspicious"},{"name":"Roga","start":"15:01","end":"16:18","startHours":15.023277241838251,"endHours":16.30759228290996,"quality":"inauspicious"},{"name":"Udveg","start":"16:18","end":"17:36","startHours":16.30759228290996,"endHours":17.591907323981673,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:36","end":"19:18","startHours":17.591907323981673,"endHours":19.30759228290996,"quality":"auspicious"},{"name":"Roga","start":"19:18","end":"21:01","startHours":19.30759228290996,"endHours":21.02327724183825,"quality":"inauspicious"},{"name":"Udveg","start":"21:01","end":"22:44","startHours":21.02327724183825,"endHours":22.73896220076654,"quality":"inauspicious"},{"name":"Chala","start":"22:44","end":"00:27","startHours":22.73896220076654,"endHours":24.45464715969483,"quality":"neutral"},{"name":"Labha","start":"00:27","end":"02:10","startHours":24.45464715969483,"endHours":26.17033211862312,"quality":"auspicious"},{"name":"Amṛta","start":"02:10","end":"03:53","startHours":26.17033211862312,"endHours":27.886017077551408,"quality":"auspicious"},{"name":"Kāla","start":"03:53","end":"05:36","startHours":27.886017077551408,"endHours":29.601702036479697,"quality":"inauspicious"},{"name":"Śubha","start":"05:36","end":"07:19","startHours":29.601702036479697,"endHours":31.317386995407986,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:19","end":"08:19","startHours":7.317386995407986,"endHours":8.317386995407986,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:19","end":"09:19","startHours":8.317386995407986,"endHours":9.317386995407986,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:19","end":"10:19","startHours":9.317386995407986,"endHours":10.317386995407986,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:19","end":"11:19","startHours":10.317386995407986,"endHours":11.317386995407986,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:19","end":"12:19","startHours":11.317386995407986,"endHours":12.317386995407986,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:19","end":"13:19","startHours":12.317386995407986,"endHours":13.317386995407986,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:19","end":"14:19","startHours":13.317386995407986,"endHours":14.317386995407986,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:19","end":"15:19","startHours":14.317386995407986,"endHours":15.317386995407986,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:19","end":"16:19","startHours":15.317386995407986,"endHours":16.317386995407986,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:19","end":"17:19","startHours":16.317386995407986,"endHours":17.317386995407986,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:19","end":"18:19","startHours":17.317386995407986,"endHours":18.317386995407986,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:19","end":"19:19","startHours":18.317386995407986,"endHours":19.317386995407986,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:19","end":"20:19","startHours":19.317386995407986,"endHours":20.317386995407986,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:19","end":"21:19","startHours":20.317386995407986,"endHours":21.317386995407986,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:19","end":"22:19","startHours":21.317386995407986,"endHours":22.317386995407986,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:19","end":"23:19","startHours":22.317386995407986,"endHours":23.317386995407986,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:19","end":"00:19","startHours":23.317386995407986,"endHours":24.317386995407986,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:19","end":"01:19","startHours":24.317386995407986,"endHours":25.317386995407986,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:19","end":"02:19","startHours":25.317386995407986,"endHours":26.317386995407986,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:19","end":"03:19","startHours":26.317386995407986,"endHours":27.317386995407986,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:19","end":"04:19","startHours":27.317386995407986,"endHours":28.317386995407986,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:19","end":"05:19","startHours":28.317386995407986,"endHours":29.317386995407986,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:19","end":"06:19","startHours":29.317386995407986,"endHours":30.317386995407986,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:19","end":"07:19","startHours":30.317386995407986,"endHours":31.317386995407986,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"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":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.68334660247985,"eotMinutes":-10.349229581689698,"ayanamsa":-47.8929}},"calendars":{"vikram_samvat":-3079,"saka_samvat":-3214,"bengali_samvat":-3729,"malayalam_era":-3960,"nanakshahi_year":-4605,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Dvitīyā · Vikram -3079 undefined · Śaka -3214 undefined"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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":true,"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 18, 3137 BCE · Ṛṣikeśa · Vidhyamitra","description":"January 18, 3137 BCE for Ṛṣikeśa: Śukla Dvitīyā, sūryodaya 07:19, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/-3136-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/-3136-01-18","sa":"https://sa.vidhyamitra.com/city/rishikesh/-3136-01-18","hi":"https://hi.vidhyamitra.com/city/rishikesh/-3136-01-18","x-default":"https://vidhyamitra.com/city/rishikesh/-3136-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T00:15:37.846Z","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":"2026-05-19T00:15:37.846Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T00:15:37.846Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}