{"id":"vidhyamitra:city-day:rishikesh:2009-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2009-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2009-07-13","date_display":"July 13, 2009 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":2009,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455025.770833,"kali_year":5111,"ahargana":1866560.2708,"sun":{"sidereal_longitude":86.3719,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":332.6199,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":246.248,"elapsed_within_tithi_degrees":6.248},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":332.6199,"elapsed_within_degrees":12.6199},"yoga":{"number":5,"name":"Śobhana","sum_longitude":58.9919},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":2009,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455025.770833,"ahargana":1866560.2708,"kali_year":5111,"ayanamsa_lahiri":23.9861,"grahas":{"sun":{"sidereal_longitude":86.810519,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":328.917819,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false,"latitude":3.543},"mars":{"sidereal_longitude":36.528418999999985,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":85.41231900000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":302.19481900000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":44.31421899999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":143.315519,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":280.6543,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":100.6543,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"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":2009,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455025.770833,"kali_year":5111,"ahargana":1866560.2708,"sun":{"sidereal_longitude":86.3719,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":332.6199,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":246.248,"elapsed_within_tithi_degrees":6.248},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":332.6199,"elapsed_within_degrees":12.6199},"yoga":{"number":5,"name":"Śobhana","sum_longitude":58.9919},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.543,"elongation":113.752},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.543,"opposition_distance":66.248}},"eclipse_window_40days":[{"offset_days":9,"type":"solar","occurs":true,"moon_latitude":0.483,"elongation":0.894}]},"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":"05:24","sunsetLocal":"19:20","solarNoonLocal":"12:22","dayLengthHours":13.931591359982244,"dayLengthDisplay":"13 Hours 55 Mins 54 Secs","nightLengthDisplay":"10 Hours 04 Mins 06 Secs","moonriseLocal":"22:35","moonsetLocal":"10:27","rahuKala":{"name":"Rāhu Kāla","start":"07:09","end":"08:53","startHours":7.14717038744267,"endHours":8.88861930744045,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:38","end":"12:22","startHours":10.630068227438231,"endHours":12.371517147436013,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:07","end":"15:51","startHours":14.112966067433792,"endHours":15.854414987431573,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:07","startHours":8.656426118107413,"endHours":9.120812496773489,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.986204440777483,"endHours":6.357713543710343,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:50","startHours":11.907130768769937,"endHours":12.835903526102088,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:29","startHours":3.5481759527805905,"endHours":4.47694871011274,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:15","end":"05:24","startHours":4.2447555207797025,"endHours":5.40572146744489,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:42","end":"15:37","startHours":14.693449040766385,"endHours":15.622221798098535,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.137312827427134,"endHours":19.537312827427133,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:55","startHours":19.337312827427134,"endHours":19.917795800759727,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.087312827427134,"endHours":20.837312827427134,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:50","startHours":23.90713076876994,"endHours":24.835903526102086,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:24","end":"07:09","startHours":5.40572146744489,"endHours":7.14717038744267,"quality":"auspicious"},{"name":"Kāla","start":"07:09","end":"08:53","startHours":7.14717038744267,"endHours":8.88861930744045,"quality":"inauspicious"},{"name":"Śubha","start":"08:53","end":"10:38","startHours":8.88861930744045,"endHours":10.630068227438231,"quality":"auspicious"},{"name":"Roga","start":"10:38","end":"12:22","startHours":10.630068227438231,"endHours":12.371517147436013,"quality":"inauspicious"},{"name":"Udveg","start":"12:22","end":"14:07","startHours":12.371517147436013,"endHours":14.112966067433792,"quality":"inauspicious"},{"name":"Chala","start":"14:07","end":"15:51","startHours":14.112966067433792,"endHours":15.854414987431573,"quality":"neutral"},{"name":"Labha","start":"15:51","end":"17:36","startHours":15.854414987431573,"endHours":17.595863907429354,"quality":"auspicious"},{"name":"Amṛta","start":"17:36","end":"19:20","startHours":17.595863907429354,"endHours":19.337312827427134,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:20","end":"20:36","startHours":19.337312827427134,"endHours":20.595863907429354,"quality":"neutral"},{"name":"Labha","start":"20:36","end":"21:51","startHours":20.595863907429354,"endHours":21.85441498743157,"quality":"auspicious"},{"name":"Amṛta","start":"21:51","end":"23:07","startHours":21.85441498743157,"endHours":23.112966067433792,"quality":"auspicious"},{"name":"Kāla","start":"23:07","end":"00:22","startHours":23.112966067433792,"endHours":24.371517147436013,"quality":"inauspicious"},{"name":"Śubha","start":"00:22","end":"01:38","startHours":24.371517147436013,"endHours":25.63006822743823,"quality":"auspicious"},{"name":"Roga","start":"01:38","end":"02:53","startHours":25.63006822743823,"endHours":26.88861930744045,"quality":"inauspicious"},{"name":"Udveg","start":"02:53","end":"04:09","startHours":26.88861930744045,"endHours":28.14717038744267,"quality":"inauspicious"},{"name":"Chala","start":"04:09","end":"05:24","startHours":28.14717038744267,"endHours":29.40572146744489,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.40572146744489,"endHours":6.40572146744489,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.40572146744489,"endHours":7.40572146744489,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.40572146744489,"endHours":8.40572146744489,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.40572146744489,"endHours":9.40572146744489,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.40572146744489,"endHours":10.40572146744489,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.40572146744489,"endHours":11.40572146744489,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.40572146744489,"endHours":12.40572146744489,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.40572146744489,"endHours":13.40572146744489,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.40572146744489,"endHours":14.40572146744489,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.40572146744489,"endHours":15.40572146744489,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.40572146744489,"endHours":16.40572146744489,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.40572146744489,"endHours":17.40572146744489,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.40572146744489,"endHours":18.40572146744489,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.40572146744489,"endHours":19.40572146744489,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.40572146744489,"endHours":20.40572146744489,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.40572146744489,"endHours":21.40572146744489,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.40572146744489,"endHours":22.40572146744489,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.40572146744489,"endHours":23.40572146744489,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.40572146744489,"endHours":24.40572146744489,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.40572146744489,"endHours":25.40572146744489,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.40572146744489,"endHours":26.40572146744489,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.40572146744489,"endHours":27.40572146744489,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.40572146744489,"endHours":28.40572146744489,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.40572146744489,"endHours":29.40572146744489,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.82783432867187,"eotMinutes":-5.361428846160681,"ayanamsa":23.9861}},"calendars":{"vikram_samvat":2066,"vikram_samvatsara":"Śubhakṛt","saka_samvat":1931,"saka_samvatsara":"Virodhi","bengali_samvat":1416,"malayalam_era":1185,"nanakshahi_year":540,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Kṛṣṇa Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Kṛṣṇa Ṣaṣṭhī · Vikram 2066 Śubhakṛt · Śaka 1931 Virodhi"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"precedence":5}],"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":[]},"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 July 13, 2009 CE · Ṛṣikeśa · Vidhyamitra","description":"July 13, 2009 CE for Ṛṣikeśa: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:24, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2009-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2009-07-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/2009-07-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/2009-07-13","x-default":"https://vidhyamitra.com/city/rishikesh/2009-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T12:04:10.160Z","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":"2026-05-16T12:04:10.160Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T12:04:10.160Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}