{"id":"vidhyamitra:city-day:rishikesh:1881-02-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1881-02-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1881-02-04","date_display":"February 4, 1881 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":1881,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2408115.770833,"kali_year":4982,"ahargana":1819650.2708,"sun":{"sidereal_longitude":293.5487,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":357.9153,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.3666,"elapsed_within_tithi_degrees":4.3666},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":357.9153,"elapsed_within_degrees":11.2487},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.464},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1881,"month":2,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2408115.770833,"ahargana":1819650.2708,"kali_year":4982,"ayanamsa_lahiri":22.192,"grahas":{"sun":{"sidereal_longitude":293.22282599999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":359.805326,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":4.1792},"mars":{"sidereal_longitude":264.871126,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":301.34772599999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":354.726626,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":340.638126,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":2.3562259999999924,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":246.1719,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":66.1719,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":1881,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2408115.770833,"kali_year":4982,"ahargana":1819650.2708,"sun":{"sidereal_longitude":293.5487,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":357.9153,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.3666,"elapsed_within_tithi_degrees":4.3666},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":357.9153,"elapsed_within_degrees":11.2487},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.464},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.179,"elongation":64.367},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.179,"opposition_distance":115.633}},"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":"07:06","sunsetLocal":"17:56","solarNoonLocal":"12:31","dayLengthHours":10.842324487628822,"dayLengthDisplay":"10 Hours 50 Mins 32 Secs","nightLengthDisplay":"13 Hours 09 Mins 28 Secs","moonriseLocal":"10:35","moonsetLocal":"23:20","rahuKala":{"name":"Rāhu Kāla","start":"11:10","end":"12:31","startHours":11.161731511846288,"endHours":12.51702207279989,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:14","end":"16:35","startHours":15.227603194707097,"endHours":16.5828937556607,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:27","end":"09:48","startHours":8.451150389939082,"endHours":9.806440950892686,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:59","startHours":9.625735542765538,"endHours":9.987146359019832,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:50","startHours":7.547623349303347,"endHours":7.836752002306782,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:53","startHours":12.155611256545596,"endHours":12.878432889054183,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:22","startHours":5.6502165639683035,"endHours":6.373038196476891,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:06","startHours":6.192332788349744,"endHours":7.095859828985479,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:03","startHours":14.32407615407136,"endHours":15.046897786579947,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.7381843166143,"endHours":18.1381843166143,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:23","startHours":17.9381843166143,"endHours":18.38994783693217,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.6881843166143,"endHours":19.4381843166143,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:53","startHours":24.155611256545594,"endHours":24.878432889054185,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:06","end":"08:27","startHours":7.095859828985479,"endHours":8.451150389939082,"quality":"neutral"},{"name":"Labha","start":"08:27","end":"09:48","startHours":8.451150389939082,"endHours":9.806440950892686,"quality":"auspicious"},{"name":"Amṛta","start":"09:48","end":"11:10","startHours":9.806440950892686,"endHours":11.161731511846288,"quality":"auspicious"},{"name":"Kāla","start":"11:10","end":"12:31","startHours":11.161731511846288,"endHours":12.51702207279989,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"13:52","startHours":12.51702207279989,"endHours":13.872312633753493,"quality":"auspicious"},{"name":"Roga","start":"13:52","end":"15:14","startHours":13.872312633753493,"endHours":15.227603194707097,"quality":"inauspicious"},{"name":"Udveg","start":"15:14","end":"16:35","startHours":15.227603194707097,"endHours":16.5828937556607,"quality":"inauspicious"},{"name":"Chala","start":"16:35","end":"17:56","startHours":16.5828937556607,"endHours":17.9381843166143,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:56","end":"19:35","startHours":17.9381843166143,"endHours":19.5828937556607,"quality":"inauspicious"},{"name":"Udveg","start":"19:35","end":"21:14","startHours":19.5828937556607,"endHours":21.227603194707093,"quality":"inauspicious"},{"name":"Chala","start":"21:14","end":"22:52","startHours":21.227603194707093,"endHours":22.87231263375349,"quality":"neutral"},{"name":"Labha","start":"22:52","end":"00:31","startHours":22.87231263375349,"endHours":24.51702207279989,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"02:10","startHours":24.51702207279989,"endHours":26.161731511846288,"quality":"auspicious"},{"name":"Kāla","start":"02:10","end":"03:48","startHours":26.161731511846288,"endHours":27.806440950892686,"quality":"inauspicious"},{"name":"Śubha","start":"03:48","end":"05:27","startHours":27.806440950892686,"endHours":29.45115038993908,"quality":"auspicious"},{"name":"Roga","start":"05:27","end":"07:06","startHours":29.45115038993908,"endHours":31.09585982898548,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.095859828985479,"endHours":8.095859828985478,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.095859828985478,"endHours":9.095859828985478,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.095859828985478,"endHours":10.095859828985478,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.095859828985478,"endHours":11.095859828985478,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.095859828985478,"endHours":12.095859828985478,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.095859828985478,"endHours":13.095859828985478,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.095859828985478,"endHours":14.095859828985478,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.095859828985478,"endHours":15.095859828985478,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.095859828985478,"endHours":16.09585982898548,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.09585982898548,"endHours":17.09585982898548,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.09585982898548,"endHours":18.09585982898548,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.09585982898548,"endHours":19.09585982898548,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.09585982898548,"endHours":20.09585982898548,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.09585982898548,"endHours":21.09585982898548,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.09585982898548,"endHours":22.09585982898548,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.09585982898548,"endHours":23.09585982898548,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.09585982898548,"endHours":24.09585982898548,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.09585982898548,"endHours":25.09585982898548,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.09585982898548,"endHours":26.09585982898548,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.09585982898548,"endHours":27.09585982898548,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.09585982898548,"endHours":28.09585982898548,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.09585982898548,"endHours":29.09585982898548,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.09585982898548,"endHours":30.09585982898548,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.09585982898548,"endHours":31.09585982898548,"planetary_lord":"Mars"}],"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":"South-East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-16.212211745694066,"eotMinutes":-14.091724367993354,"ayanamsa":22.192}},"calendars":{"vikram_samvat":1938,"vikram_samvatsara":"Jaya","saka_samvat":1803,"saka_samvatsara":"Vṛṣa","bengali_samvat":1288,"malayalam_era":1057,"nanakshahi_year":412,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Ṣaṣṭhī · Vikram 1938 Jaya · Śaka 1803 Vṛṣa"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 4, 1881 CE · Ṛṣikeśa · Vidhyamitra","description":"February 4, 1881 CE for Ṛṣikeśa: Śukla Ṣaṣṭhī, sūryodaya 07:06, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1881-02-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1881-02-04","sa":"https://sa.vidhyamitra.com/city/rishikesh/1881-02-04","hi":"https://hi.vidhyamitra.com/city/rishikesh/1881-02-04","x-default":"https://vidhyamitra.com/city/rishikesh/1881-02-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:45:01.801Z","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":"2026-06-01T01:45:01.801Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:45:01.801Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}