{"id":"vidhyamitra:city-day:rishikesh:2025-09-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2025-09-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-09-11","date_display":"September 11, 2025 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":2025,"month":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460929.770833,"kali_year":5127,"ahargana":1872464.2708,"sun":{"sidereal_longitude":143.5812,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":5.7437,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.1626,"elapsed_within_tithi_degrees":6.1626},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":5.7437,"elapsed_within_degrees":5.7437},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.3249},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2025,"month":9,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460929.770833,"ahargana":1872464.2708,"kali_year":5127,"ayanamsa_lahiri":24.2119,"grahas":{"sun":{"sidereal_longitude":144.36064299999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":8.75214299999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":2.7632},"mars":{"sidereal_longitude":177.90734300000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":141.786543,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":85.28004299999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"venus":{"sidereal_longitude":115.13624299999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":335.14794299999994,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":327.832,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":147.832,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":2025,"month":9,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460929.770833,"kali_year":5127,"ahargana":1872464.2708,"sun":{"sidereal_longitude":143.5812,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":5.7437,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.1626,"elapsed_within_tithi_degrees":6.1626},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":5.7437,"elapsed_within_degrees":5.7437},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.3249},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.763,"elongation":137.837},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.763,"opposition_distance":42.163}},"eclipse_window_40days":[{"offset_days":-3,"type":"lunar","occurs":true,"moon_latitude":-0.388,"opposition_distance":2.369}]},"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":"05:59","sunsetLocal":"18:27","solarNoonLocal":"12:13","dayLengthHours":12.478941955758048,"dayLengthDisplay":"12 Hours 28 Mins 44 Secs","nightLengthDisplay":"11 Hours 31 Mins 16 Secs","moonriseLocal":"20:38","moonsetLocal":"09:43","rahuKala":{"name":"Rāhu Kāla","start":"13:47","end":"15:20","startHours":13.77512120856371,"endHours":15.334988953033466,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:59","end":"07:32","startHours":5.97578248621493,"endHours":7.535650230684686,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:06","end":"10:39","startHours":9.095517975154442,"endHours":10.6553857196242,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.887535609225141,"endHours":9.303500341083744,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:50","startHours":6.4957384010381825,"endHours":6.8285101865250635,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:38","startHours":11.799288732235354,"endHours":12.631218195952556,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:19","end":"05:09","startHours":4.311923558780524,"endHours":5.143853022497727,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:56","end":"05:59","startHours":4.935870656568426,"endHours":5.97578248621493,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:18","end":"15:08","startHours":14.295077123386962,"endHours":15.127006587104166,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.25472444197298,"endHours":18.654724441972977,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:58","startHours":18.454724441972978,"endHours":18.97468035679623,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.204724441972978,"endHours":19.954724441972978,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:38","startHours":23.799288732235354,"endHours":24.631218195952556,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:59","end":"07:32","startHours":5.97578248621493,"endHours":7.535650230684686,"quality":"auspicious"},{"name":"Roga","start":"07:32","end":"09:06","startHours":7.535650230684686,"endHours":9.095517975154442,"quality":"inauspicious"},{"name":"Udveg","start":"09:06","end":"10:39","startHours":9.095517975154442,"endHours":10.6553857196242,"quality":"inauspicious"},{"name":"Chala","start":"10:39","end":"12:13","startHours":10.6553857196242,"endHours":12.215253464093955,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:47","startHours":12.215253464093955,"endHours":13.77512120856371,"quality":"auspicious"},{"name":"Amṛta","start":"13:47","end":"15:20","startHours":13.77512120856371,"endHours":15.334988953033466,"quality":"auspicious"},{"name":"Kāla","start":"15:20","end":"16:54","startHours":15.334988953033466,"endHours":16.894856697503222,"quality":"inauspicious"},{"name":"Śubha","start":"16:54","end":"18:27","startHours":16.894856697503222,"endHours":18.454724441972978,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:27","end":"19:54","startHours":18.454724441972978,"endHours":19.894856697503222,"quality":"auspicious"},{"name":"Kāla","start":"19:54","end":"21:20","startHours":19.894856697503222,"endHours":21.334988953033466,"quality":"inauspicious"},{"name":"Śubha","start":"21:20","end":"22:47","startHours":21.334988953033466,"endHours":22.77512120856371,"quality":"auspicious"},{"name":"Roga","start":"22:47","end":"00:13","startHours":22.77512120856371,"endHours":24.215253464093955,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:39","startHours":24.215253464093955,"endHours":25.6553857196242,"quality":"inauspicious"},{"name":"Chala","start":"01:39","end":"03:06","startHours":25.6553857196242,"endHours":27.095517975154443,"quality":"neutral"},{"name":"Labha","start":"03:06","end":"04:32","startHours":27.095517975154443,"endHours":28.535650230684688,"quality":"auspicious"},{"name":"Amṛta","start":"04:32","end":"05:59","startHours":28.535650230684688,"endHours":29.975782486214932,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:59","end":"06:59","startHours":5.97578248621493,"endHours":6.97578248621493,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:59","end":"07:59","startHours":6.97578248621493,"endHours":7.97578248621493,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:59","end":"08:59","startHours":7.97578248621493,"endHours":8.97578248621493,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:59","end":"09:59","startHours":8.97578248621493,"endHours":9.97578248621493,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:59","end":"10:59","startHours":9.97578248621493,"endHours":10.97578248621493,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:59","end":"11:59","startHours":10.97578248621493,"endHours":11.97578248621493,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:59","end":"12:59","startHours":11.97578248621493,"endHours":12.97578248621493,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:59","end":"13:59","startHours":12.97578248621493,"endHours":13.97578248621493,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:59","end":"14:59","startHours":13.97578248621493,"endHours":14.97578248621493,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:59","end":"15:59","startHours":14.97578248621493,"endHours":15.97578248621493,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:59","end":"16:59","startHours":15.97578248621493,"endHours":16.975782486214932,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:59","end":"17:59","startHours":16.975782486214932,"endHours":17.975782486214932,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:59","end":"18:59","startHours":17.975782486214932,"endHours":18.975782486214932,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:59","end":"19:59","startHours":18.975782486214932,"endHours":19.975782486214932,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:59","end":"20:59","startHours":19.975782486214932,"endHours":20.975782486214932,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:59","end":"21:59","startHours":20.975782486214932,"endHours":21.975782486214932,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:59","end":"22:59","startHours":21.975782486214932,"endHours":22.975782486214932,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:59","end":"23:59","startHours":22.975782486214932,"endHours":23.975782486214932,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:59","end":"00:59","startHours":23.975782486214932,"endHours":24.975782486214932,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:59","end":"01:59","startHours":24.975782486214932,"endHours":25.975782486214932,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:59","end":"02:59","startHours":25.975782486214932,"endHours":26.975782486214932,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:59","end":"03:59","startHours":26.975782486214932,"endHours":27.975782486214932,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:59","end":"04:59","startHours":27.975782486214932,"endHours":28.975782486214932,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:59","end":"05:59","startHours":28.975782486214932,"endHours":29.975782486214932,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Mṛtyu","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":4.519683301916273,"eotMinutes":4.014392154362758,"ayanamsa":24.2119}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Caturthī · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"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":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"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 September 11, 2025 CE · Ṛṣikeśa · Vidhyamitra","description":"September 11, 2025 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 05:59, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2025-09-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2025-09-11","sa":"https://sa.vidhyamitra.com/city/rishikesh/2025-09-11","hi":"https://hi.vidhyamitra.com/city/rishikesh/2025-09-11","x-default":"https://vidhyamitra.com/city/rishikesh/2025-09-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T05:07:01.813Z","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":"2026-05-15T05:07:01.813Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T05:07:01.813Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}