{"id":"vidhyamitra:city-day:rishikesh:2027-09-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2027-09-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2027-09-04","date_display":"September 4, 2027 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":2027,"month":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461652.770833,"kali_year":5129,"ahargana":1873187.2708,"sun":{"sidereal_longitude":136.3086,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":180.2752,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.9666,"elapsed_within_tithi_degrees":7.9666},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.2752,"elapsed_within_degrees":6.9419},"yoga":{"number":24,"name":"Śukla","sum_longitude":316.5839},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2027,"month":9,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461652.770833,"ahargana":1873187.2708,"kali_year":5129,"ayanamsa_lahiri":24.2396,"grahas":{"sun":{"sidereal_longitude":137.070519,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":181.83761900000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false,"latitude":-4.248},"mars":{"sidereal_longitude":186.70731899999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":156.15841899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":134.05271900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":143.02071899999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":3.1048190000000204,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":289.524,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":109.524,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"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":2027,"month":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461652.770833,"kali_year":5129,"ahargana":1873187.2708,"sun":{"sidereal_longitude":136.3086,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":180.2752,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.9666,"elapsed_within_tithi_degrees":7.9666},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.2752,"elapsed_within_degrees":6.9419},"yoga":{"number":24,"name":"Śukla","sum_longitude":316.5839},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.248,"elongation":43.967},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.248,"opposition_distance":136.033}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":0.487,"opposition_distance":2.324}]},"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":"05:54","sunsetLocal":"18:36","solarNoonLocal":"12:15","dayLengthHours":12.699138918057129,"dayLengthDisplay":"12 Hours 41 Mins 57 Secs","nightLengthDisplay":"11 Hours 18 Mins 03 Secs","moonriseLocal":"09:35","moonsetLocal":"20:54","rahuKala":{"name":"Rāhu Kāla","start":"09:05","end":"10:40","startHours":9.082411335531452,"endHours":10.669803700288593,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:51","end":"15:26","startHours":13.844588429802876,"endHours":15.431980794560015,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:54","end":"07:30","startHours":5.907626606017169,"endHours":7.495018970774311,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:18","startHours":8.8707590202305,"endHours":9.294063650832403,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:26","end":"06:47","startHours":6.4367573942695495,"endHours":6.775401098751073,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:41","startHours":11.833891434443828,"endHours":12.680500695647638,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:13","end":"05:04","startHours":4.214408083609552,"endHours":5.061017344813361,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:54","startHours":4.849365029512409,"endHours":5.907626606017169,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:13","startHours":14.373719218055255,"endHours":15.220328479259063,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:24","end":"18:48","startHours":18.4067655240743,"endHours":18.806765524074297,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:36","end":"19:08","startHours":18.606765524074298,"endHours":19.13589631232668,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:21","end":"20:06","startHours":18.356765524074298,"endHours":20.106765524074298,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:41","startHours":23.833891434443828,"endHours":24.680500695647638,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:54","end":"07:30","startHours":5.907626606017169,"endHours":7.495018970774311,"quality":"inauspicious"},{"name":"Śubha","start":"07:30","end":"09:05","startHours":7.495018970774311,"endHours":9.082411335531452,"quality":"auspicious"},{"name":"Roga","start":"09:05","end":"10:40","startHours":9.082411335531452,"endHours":10.669803700288593,"quality":"inauspicious"},{"name":"Udveg","start":"10:40","end":"12:15","startHours":10.669803700288593,"endHours":12.257196065045733,"quality":"inauspicious"},{"name":"Chala","start":"12:15","end":"13:51","startHours":12.257196065045733,"endHours":13.844588429802876,"quality":"neutral"},{"name":"Labha","start":"13:51","end":"15:26","startHours":13.844588429802876,"endHours":15.431980794560015,"quality":"auspicious"},{"name":"Amṛta","start":"15:26","end":"17:01","startHours":15.431980794560015,"endHours":17.019373159317155,"quality":"auspicious"},{"name":"Kāla","start":"17:01","end":"18:36","startHours":17.019373159317155,"endHours":18.606765524074298,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:36","end":"20:01","startHours":18.606765524074298,"endHours":20.01937315931716,"quality":"auspicious"},{"name":"Amṛta","start":"20:01","end":"21:26","startHours":20.01937315931716,"endHours":21.431980794560015,"quality":"auspicious"},{"name":"Kāla","start":"21:26","end":"22:51","startHours":21.431980794560015,"endHours":22.844588429802876,"quality":"inauspicious"},{"name":"Śubha","start":"22:51","end":"00:15","startHours":22.844588429802876,"endHours":24.257196065045733,"quality":"auspicious"},{"name":"Roga","start":"00:15","end":"01:40","startHours":24.257196065045733,"endHours":25.669803700288593,"quality":"inauspicious"},{"name":"Udveg","start":"01:40","end":"03:05","startHours":25.669803700288593,"endHours":27.082411335531454,"quality":"inauspicious"},{"name":"Chala","start":"03:05","end":"04:30","startHours":27.082411335531454,"endHours":28.49501897077431,"quality":"neutral"},{"name":"Labha","start":"04:30","end":"05:54","startHours":28.49501897077431,"endHours":29.907626606017168,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:54","end":"06:54","startHours":5.907626606017169,"endHours":6.907626606017169,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:54","end":"07:54","startHours":6.907626606017169,"endHours":7.907626606017169,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:54","end":"08:54","startHours":7.907626606017169,"endHours":8.90762660601717,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:54","end":"09:54","startHours":8.90762660601717,"endHours":9.90762660601717,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:54","end":"10:54","startHours":9.90762660601717,"endHours":10.90762660601717,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:54","end":"11:54","startHours":10.90762660601717,"endHours":11.90762660601717,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:54","end":"12:54","startHours":11.90762660601717,"endHours":12.90762660601717,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:54","end":"13:54","startHours":12.90762660601717,"endHours":13.90762660601717,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:54","end":"14:54","startHours":13.90762660601717,"endHours":14.90762660601717,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:54","end":"15:54","startHours":14.90762660601717,"endHours":15.90762660601717,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:54","end":"16:54","startHours":15.90762660601717,"endHours":16.907626606017168,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:54","end":"17:54","startHours":16.907626606017168,"endHours":17.907626606017168,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:54","end":"18:54","startHours":17.907626606017168,"endHours":18.907626606017168,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:54","end":"19:54","startHours":18.907626606017168,"endHours":19.907626606017168,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:54","end":"20:54","startHours":19.907626606017168,"endHours":20.907626606017168,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:54","end":"21:54","startHours":20.907626606017168,"endHours":21.907626606017168,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:54","end":"22:54","startHours":21.907626606017168,"endHours":22.907626606017168,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:54","end":"23:54","startHours":22.907626606017168,"endHours":23.907626606017168,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:54","end":"00:54","startHours":23.907626606017168,"endHours":24.907626606017168,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:54","end":"01:54","startHours":24.907626606017168,"endHours":25.907626606017168,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:54","end":"02:54","startHours":25.907626606017168,"endHours":26.907626606017168,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:54","end":"03:54","startHours":26.907626606017168,"endHours":27.907626606017168,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:54","end":"04:54","startHours":27.907626606017168,"endHours":28.907626606017168,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:54","end":"05:54","startHours":28.907626606017168,"endHours":29.907626606017168,"planetary_lord":"Mercury"}],"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":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":7.322357989645152,"eotMinutes":1.4978360972560227,"ayanamsa":24.2396}},"calendars":{"vikram_samvat":2084,"vikram_samvatsara":"Raudra","saka_samvat":1949,"saka_samvatsara":"Plavaṅga","bengali_samvat":1434,"malayalam_era":1203,"nanakshahi_year":558,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Caturthī · Vikram 2084 Raudra · Śaka 1949 Plavaṅga"},"festivals":[{"id":"ganesha-chaturthi","name":"Gaṇeśa Caturthī","name_sanskrit":"गणेश चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Gaṇeśa's birth day; 11-day festival in Maharashtra.","vrata":false,"detection":{"tithi_number":4,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":1},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5},{"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":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 September 4, 2027 CE · Ṛṣikeśa · Vidhyamitra","description":"September 4, 2027 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 05:54, sūryāsta 18:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2027-09-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2027-09-04","sa":"https://sa.vidhyamitra.com/city/rishikesh/2027-09-04","hi":"https://hi.vidhyamitra.com/city/rishikesh/2027-09-04","x-default":"https://vidhyamitra.com/city/rishikesh/2027-09-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T16:18:20.446Z","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":"2026-05-14T16:18:20.446Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T16:18:20.446Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}