{"id":"vidhyamitra:city-day:rishikesh:2001-04-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2001-04-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-04-27","date_display":"April 27, 2001 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":2001,"month":4,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452026.770833,"kali_year":5103,"ahargana":1863561.2708,"sun":{"sidereal_longitude":13.0645,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":55.1465,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":42.082,"elapsed_within_tithi_degrees":6.082},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.1465,"elapsed_within_degrees":1.8132},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":68.211},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":2001,"month":4,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2452026.770833,"ahargana":1863561.2708,"kali_year":5103,"ayanamsa_lahiri":23.8714,"grahas":{"sun":{"sidereal_longitude":12.98770300000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":55.23720300000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false,"latitude":-1.858},"mars":{"sidereal_longitude":243.87570299999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":17.108902999999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":48.735703,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":338.473003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":36.813702999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":79.5558,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":259.5558,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2001,"month":4,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452026.770833,"kali_year":5103,"ahargana":1863561.2708,"sun":{"sidereal_longitude":13.0645,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":55.1465,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":42.082,"elapsed_within_tithi_degrees":6.082},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.1465,"elapsed_within_degrees":1.8132},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":68.211},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.858,"elongation":42.082},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.858,"opposition_distance":137.918}},"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":"05:38","sunsetLocal":"18:51","solarNoonLocal":"12:15","dayLengthHours":13.224789290706447,"dayLengthDisplay":"13 Hours 13 Mins 29 Secs","nightLengthDisplay":"10 Hours 46 Mins 31 Secs","moonriseLocal":"08:04","moonsetLocal":"22:04","rahuKala":{"name":"Rāhu Kāla","start":"10:35","end":"12:15","startHours":10.590193524501556,"endHours":12.243292185839863,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:33","end":"17:12","startHours":15.549489508516473,"endHours":17.20258816985478,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:17","end":"08:56","startHours":7.2839962018249444,"endHours":8.93709486316325,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:43","end":"09:09","startHours":8.716681708318143,"endHours":9.157508018008357,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:11","end":"06:32","startHours":6.181930427599407,"endHours":6.534591475351579,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:41","startHours":11.802465876149649,"endHours":12.684118495530077,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:52","end":"04:45","startHours":3.8675923017257787,"endHours":4.749244921106209,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:38","startHours":4.528831766261101,"endHours":5.630897540486639,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:20","startHours":14.447423734290936,"endHours":15.329076353671367,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:39","end":"19:03","startHours":18.655686831193087,"endHours":19.055686831193086,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:51","end":"19:24","startHours":18.855686831193086,"endHours":19.406719718305855,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:36","end":"20:21","startHours":18.605686831193086,"endHours":20.355686831193086,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:41","startHours":23.802465876149647,"endHours":24.68411849553008,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:38","end":"07:17","startHours":5.630897540486639,"endHours":7.2839962018249444,"quality":"neutral"},{"name":"Labha","start":"07:17","end":"08:56","startHours":7.2839962018249444,"endHours":8.93709486316325,"quality":"auspicious"},{"name":"Amṛta","start":"08:56","end":"10:35","startHours":8.93709486316325,"endHours":10.590193524501556,"quality":"auspicious"},{"name":"Kāla","start":"10:35","end":"12:15","startHours":10.590193524501556,"endHours":12.243292185839863,"quality":"inauspicious"},{"name":"Śubha","start":"12:15","end":"13:54","startHours":12.243292185839863,"endHours":13.896390847178168,"quality":"auspicious"},{"name":"Roga","start":"13:54","end":"15:33","startHours":13.896390847178168,"endHours":15.549489508516473,"quality":"inauspicious"},{"name":"Udveg","start":"15:33","end":"17:12","startHours":15.549489508516473,"endHours":17.20258816985478,"quality":"inauspicious"},{"name":"Chala","start":"17:12","end":"18:51","startHours":17.20258816985478,"endHours":18.855686831193086,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:51","end":"20:12","startHours":18.855686831193086,"endHours":20.20258816985478,"quality":"inauspicious"},{"name":"Udveg","start":"20:12","end":"21:33","startHours":20.20258816985478,"endHours":21.549489508516473,"quality":"inauspicious"},{"name":"Chala","start":"21:33","end":"22:54","startHours":21.549489508516473,"endHours":22.896390847178168,"quality":"neutral"},{"name":"Labha","start":"22:54","end":"00:15","startHours":22.896390847178168,"endHours":24.243292185839863,"quality":"auspicious"},{"name":"Amṛta","start":"00:15","end":"01:35","startHours":24.243292185839863,"endHours":25.590193524501558,"quality":"auspicious"},{"name":"Kāla","start":"01:35","end":"02:56","startHours":25.590193524501558,"endHours":26.937094863163253,"quality":"inauspicious"},{"name":"Śubha","start":"02:56","end":"04:17","startHours":26.937094863163253,"endHours":28.283996201824944,"quality":"auspicious"},{"name":"Roga","start":"04:17","end":"05:38","startHours":28.283996201824944,"endHours":29.63089754048664,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:38","end":"06:38","startHours":5.630897540486639,"endHours":6.630897540486639,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:38","end":"07:38","startHours":6.630897540486639,"endHours":7.630897540486639,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:38","end":"08:38","startHours":7.630897540486639,"endHours":8.63089754048664,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:38","end":"09:38","startHours":8.63089754048664,"endHours":9.63089754048664,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:38","end":"10:38","startHours":9.63089754048664,"endHours":10.63089754048664,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:38","end":"11:38","startHours":10.63089754048664,"endHours":11.63089754048664,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:38","end":"12:38","startHours":11.63089754048664,"endHours":12.63089754048664,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:38","end":"13:38","startHours":12.63089754048664,"endHours":13.63089754048664,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:38","end":"14:38","startHours":13.63089754048664,"endHours":14.63089754048664,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:38","end":"15:38","startHours":14.63089754048664,"endHours":15.63089754048664,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:38","end":"16:38","startHours":15.63089754048664,"endHours":16.63089754048664,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:38","end":"17:38","startHours":16.63089754048664,"endHours":17.63089754048664,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:38","end":"18:38","startHours":17.63089754048664,"endHours":18.63089754048664,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:38","end":"19:38","startHours":18.63089754048664,"endHours":19.63089754048664,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:38","end":"20:38","startHours":19.63089754048664,"endHours":20.63089754048664,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:38","end":"21:38","startHours":20.63089754048664,"endHours":21.63089754048664,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:38","end":"22:38","startHours":21.63089754048664,"endHours":22.63089754048664,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:38","end":"23:38","startHours":22.63089754048664,"endHours":23.63089754048664,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:38","end":"00:38","startHours":23.63089754048664,"endHours":24.63089754048664,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:38","end":"01:38","startHours":24.63089754048664,"endHours":25.63089754048664,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:38","end":"02:38","startHours":25.63089754048664,"endHours":26.63089754048664,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:38","end":"03:38","startHours":26.63089754048664,"endHours":27.63089754048664,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:38","end":"04:38","startHours":27.63089754048664,"endHours":28.63089754048664,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:38","end":"05:38","startHours":28.63089754048664,"endHours":29.63089754048664,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.802717972317888,"eotMinutes":2.332068849608316,"ayanamsa":23.8714}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Caturthī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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 April 27, 2001 CE · Ṛṣikeśa · Vidhyamitra","description":"April 27, 2001 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 05:38, sūryāsta 18:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2001-04-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2001-04-27","sa":"https://sa.vidhyamitra.com/city/rishikesh/2001-04-27","hi":"https://hi.vidhyamitra.com/city/rishikesh/2001-04-27","x-default":"https://vidhyamitra.com/city/rishikesh/2001-04-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T01:38:17.945Z","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":"2026-05-17T01:38:17.945Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T01:38:17.945Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}