{"id":"vidhyamitra:city-day:rishikesh:1907-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1907-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1907-01-21","date_display":"January 21, 1907 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":1907,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417596.770833,"kali_year":5008,"ahargana":1829131.2708,"sun":{"sidereal_longitude":277.4647,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":1.675,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":84.2103,"elapsed_within_tithi_degrees":0.2103},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":1.675,"elapsed_within_degrees":1.675},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.1397},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1907,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2417596.770833,"ahargana":1829131.2708,"kali_year":5008,"ayanamsa_lahiri":22.5546,"grahas":{"sun":{"sidereal_longitude":277.308182,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":3.7446820000000116,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false,"latitude":-4.399},"mars":{"sidereal_longitude":209.64248199999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":270.39768200000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":71.693082,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":233.37078199999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":320.86778200000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":103.8229,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":283.8229,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1907,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417596.770833,"kali_year":5008,"ahargana":1829131.2708,"sun":{"sidereal_longitude":277.4647,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":1.675,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":84.2103,"elapsed_within_tithi_degrees":0.2103},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":1.675,"elapsed_within_degrees":1.675},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.1397},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.399,"elongation":84.21},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.399,"opposition_distance":95.79}},"eclipse_window_40days":[{"offset_days":-7,"type":"solar","occurs":true,"moon_latitude":1.232,"elongation":1.995}]},"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":"07:13","sunsetLocal":"17:43","solarNoonLocal":"12:28","dayLengthHours":10.500672264178371,"dayLengthDisplay":"10 Hours 30 Mins 02 Secs","nightLengthDisplay":"13 Hours 29 Mins 58 Secs","moonriseLocal":"11:47","moonsetLocal":"00:40","rahuKala":{"name":"Rāhu Kāla","start":"08:32","end":"09:51","startHours":8.532003421751979,"endHours":9.844587454774274,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:09","end":"12:28","startHours":11.157171487796571,"endHours":12.469755520818868,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:47","end":"15:06","startHours":13.782339553841163,"endHours":15.09492358686346,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.669576250371302,"endHours":10.019598659177248,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:39","end":"07:56","startHours":7.656947399737113,"endHours":7.93696532678187,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:49","startHours":12.119733112012922,"endHours":12.819777929624815,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:49","end":"06:31","startHours":5.819329753505899,"endHours":6.51937457111779,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:21","end":"07:13","startHours":6.344363366714817,"endHours":7.219419388729682,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"14:55","startHours":14.219867564848595,"endHours":14.919912382460486,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:31","end":"17:55","startHours":17.520091652908054,"endHours":17.920091652908052,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:43","end":"18:09","startHours":17.720091652908053,"endHours":18.157619663915487,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:28","end":"19:13","startHours":17.470091652908053,"endHours":19.220091652908053,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:49","startHours":24.119733112012923,"endHours":24.819777929624813,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:13","end":"08:32","startHours":7.219419388729682,"endHours":8.532003421751979,"quality":"auspicious"},{"name":"Kāla","start":"08:32","end":"09:51","startHours":8.532003421751979,"endHours":9.844587454774274,"quality":"inauspicious"},{"name":"Śubha","start":"09:51","end":"11:09","startHours":9.844587454774274,"endHours":11.157171487796571,"quality":"auspicious"},{"name":"Roga","start":"11:09","end":"12:28","startHours":11.157171487796571,"endHours":12.469755520818868,"quality":"inauspicious"},{"name":"Udveg","start":"12:28","end":"13:47","startHours":12.469755520818868,"endHours":13.782339553841163,"quality":"inauspicious"},{"name":"Chala","start":"13:47","end":"15:06","startHours":13.782339553841163,"endHours":15.09492358686346,"quality":"neutral"},{"name":"Labha","start":"15:06","end":"16:24","startHours":15.09492358686346,"endHours":16.407507619885756,"quality":"auspicious"},{"name":"Amṛta","start":"16:24","end":"17:43","startHours":16.407507619885756,"endHours":17.720091652908053,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:43","end":"19:24","startHours":17.720091652908053,"endHours":19.407507619885756,"quality":"neutral"},{"name":"Labha","start":"19:24","end":"21:06","startHours":19.407507619885756,"endHours":21.09492358686346,"quality":"auspicious"},{"name":"Amṛta","start":"21:06","end":"22:47","startHours":21.09492358686346,"endHours":22.78233955384116,"quality":"auspicious"},{"name":"Kāla","start":"22:47","end":"00:28","startHours":22.78233955384116,"endHours":24.469755520818868,"quality":"inauspicious"},{"name":"Śubha","start":"00:28","end":"02:09","startHours":24.469755520818868,"endHours":26.15717148779657,"quality":"auspicious"},{"name":"Roga","start":"02:09","end":"03:51","startHours":26.15717148779657,"endHours":27.844587454774274,"quality":"inauspicious"},{"name":"Udveg","start":"03:51","end":"05:32","startHours":27.844587454774274,"endHours":29.53200342175198,"quality":"inauspicious"},{"name":"Chala","start":"05:32","end":"07:13","startHours":29.53200342175198,"endHours":31.219419388729683,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.219419388729682,"endHours":8.219419388729682,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.219419388729682,"endHours":9.219419388729682,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.219419388729682,"endHours":10.219419388729682,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.219419388729682,"endHours":11.219419388729682,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.219419388729682,"endHours":12.219419388729682,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.219419388729682,"endHours":13.219419388729682,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.219419388729682,"endHours":14.219419388729682,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.219419388729682,"endHours":15.219419388729682,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.219419388729682,"endHours":16.219419388729683,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.219419388729683,"endHours":17.219419388729683,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.219419388729683,"endHours":18.219419388729683,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.219419388729683,"endHours":19.219419388729683,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.219419388729683,"endHours":20.219419388729683,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.219419388729683,"endHours":21.219419388729683,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.219419388729683,"endHours":22.219419388729683,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.219419388729683,"endHours":23.219419388729683,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.219419388729683,"endHours":24.219419388729683,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.219419388729683,"endHours":25.219419388729683,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.219419388729683,"endHours":26.219419388729683,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.219419388729683,"endHours":27.219419388729683,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.219419388729683,"endHours":28.219419388729683,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.219419388729683,"endHours":29.219419388729683,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.219419388729683,"endHours":30.219419388729683,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.219419388729683,"endHours":31.219419388729683,"planetary_lord":"Venus"}],"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":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.177015687202363,"eotMinutes":-11.255731249132124,"ayanamsa":22.5546}},"calendars":{"vikram_samvat":1964,"vikram_samvatsara":"Raudra","saka_samvat":1829,"saka_samvatsara":"Plavaṅga","bengali_samvat":1314,"malayalam_era":1083,"nanakshahi_year":438,"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 Aṣṭamī · Vikram 1964 Raudra · Śaka 1829 Plavaṅga"},"festivals":[{"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"]}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 21, 1907 CE · Ṛṣikeśa · Vidhyamitra","description":"January 21, 1907 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 07:13, sūryāsta 17:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1907-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1907-01-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1907-01-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1907-01-21","x-default":"https://vidhyamitra.com/city/rishikesh/1907-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:01:38.841Z","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":"2026-05-31T15:01:38.841Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:01:38.841Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}