{"id":"vidhyamitra:city-day:rishikesh:2080-09-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2080-09-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2080-09-27","date_display":"September 27, 2080 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":2080,"month":9,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2481034.770833,"kali_year":5182,"ahargana":1892569.2708,"sun":{"sidereal_longitude":158.9507,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":314.9309,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.9803,"elapsed_within_tithi_degrees":11.9803},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.9309,"elapsed_within_degrees":8.2643},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.8816},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":2080,"month":9,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2481034.770833,"ahargana":1892569.2708,"kali_year":5182,"ayanamsa_lahiri":24.9809,"grahas":{"sun":{"sidereal_longitude":159.890584,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":316.686784,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false,"latitude":-2.086},"mars":{"sidereal_longitude":256.4696839999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":182.71788400000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":286.44108400000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"venus":{"sidereal_longitude":192.901384,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":283.56458399999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":342.5723,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":162.5723,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":2080,"month":9,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2481034.770833,"kali_year":5182,"ahargana":1892569.2708,"sun":{"sidereal_longitude":158.9507,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":314.9309,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.9803,"elapsed_within_tithi_degrees":11.9803},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.9309,"elapsed_within_degrees":8.2643},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.8816},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.086,"elongation":155.98},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.086,"opposition_distance":24.02}},"eclipse_window_40days":[{"offset_days":2,"type":"lunar","occurs":true,"moon_latitude":-0.17,"opposition_distance":0.607},{"offset_days":16,"type":"solar","occurs":true,"moon_latitude":-1.074,"elongation":0.827}]},"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":"06:08","sunsetLocal":"18:06","solarNoonLocal":"12:07","dayLengthHours":11.978849590979138,"dayLengthDisplay":"11 Hours 58 Mins 44 Secs","nightLengthDisplay":"12 Hours 01 Mins 16 Secs","moonriseLocal":"16:48","moonsetLocal":"04:20","rahuKala":{"name":"Rāhu Kāla","start":"10:37","end":"12:07","startHours":10.62079104121564,"endHours":12.118147240088032,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:07","end":"16:37","startHours":15.112859637832816,"endHours":16.61021583670521,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:38","end":"09:07","startHours":7.626078643470856,"endHours":9.123434842343247,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:19","startHours":8.923787349160262,"endHours":9.323082335526234,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.627841177555927,"endHours":6.947277166648704,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:31","startHours":11.71885225372206,"endHours":12.517442226454003,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:32","end":"05:20","startHours":4.531542499134579,"endHours":5.330132471866521,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:08","end":"06:08","startHours":5.130484978683535,"endHours":6.128722444598464,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:55","startHours":14.11462217191789,"endHours":14.913212144649833,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.9075720355776,"endHours":18.3075720355776,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:36","startHours":18.1075720355776,"endHours":18.606690768535064,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.8575720355776,"endHours":19.6075720355776,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:31","startHours":23.718852253722062,"endHours":24.517442226454,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:08","end":"07:38","startHours":6.128722444598464,"endHours":7.626078643470856,"quality":"neutral"},{"name":"Labha","start":"07:38","end":"09:07","startHours":7.626078643470856,"endHours":9.123434842343247,"quality":"auspicious"},{"name":"Amṛta","start":"09:07","end":"10:37","startHours":9.123434842343247,"endHours":10.62079104121564,"quality":"auspicious"},{"name":"Kāla","start":"10:37","end":"12:07","startHours":10.62079104121564,"endHours":12.118147240088032,"quality":"inauspicious"},{"name":"Śubha","start":"12:07","end":"13:37","startHours":12.118147240088032,"endHours":13.615503438960424,"quality":"auspicious"},{"name":"Roga","start":"13:37","end":"15:07","startHours":13.615503438960424,"endHours":15.112859637832816,"quality":"inauspicious"},{"name":"Udveg","start":"15:07","end":"16:37","startHours":15.112859637832816,"endHours":16.61021583670521,"quality":"inauspicious"},{"name":"Chala","start":"16:37","end":"18:06","startHours":16.61021583670521,"endHours":18.1075720355776,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:06","end":"19:37","startHours":18.1075720355776,"endHours":19.61021583670521,"quality":"inauspicious"},{"name":"Udveg","start":"19:37","end":"21:07","startHours":19.61021583670521,"endHours":21.112859637832816,"quality":"inauspicious"},{"name":"Chala","start":"21:07","end":"22:37","startHours":21.112859637832816,"endHours":22.615503438960424,"quality":"neutral"},{"name":"Labha","start":"22:37","end":"00:07","startHours":22.615503438960424,"endHours":24.11814724008803,"quality":"auspicious"},{"name":"Amṛta","start":"00:07","end":"01:37","startHours":24.11814724008803,"endHours":25.62079104121564,"quality":"auspicious"},{"name":"Kāla","start":"01:37","end":"03:07","startHours":25.62079104121564,"endHours":27.123434842343247,"quality":"inauspicious"},{"name":"Śubha","start":"03:07","end":"04:38","startHours":27.123434842343247,"endHours":28.626078643470855,"quality":"auspicious"},{"name":"Roga","start":"04:38","end":"06:08","startHours":28.626078643470855,"endHours":30.128722444598463,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.128722444598464,"endHours":7.128722444598464,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.128722444598464,"endHours":8.128722444598463,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.128722444598463,"endHours":9.128722444598463,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.128722444598463,"endHours":10.128722444598463,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.128722444598463,"endHours":11.128722444598463,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.128722444598463,"endHours":12.128722444598463,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.128722444598463,"endHours":13.128722444598463,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.128722444598463,"endHours":14.128722444598463,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.128722444598463,"endHours":15.128722444598463,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.128722444598463,"endHours":16.128722444598463,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.128722444598463,"endHours":17.128722444598463,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.128722444598463,"endHours":18.128722444598463,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.128722444598463,"endHours":19.128722444598463,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.128722444598463,"endHours":20.128722444598463,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.128722444598463,"endHours":21.128722444598463,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.128722444598463,"endHours":22.128722444598463,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.128722444598463,"endHours":23.128722444598463,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.128722444598463,"endHours":24.128722444598463,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.128722444598463,"endHours":25.128722444598463,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.128722444598463,"endHours":26.128722444598463,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.128722444598463,"endHours":27.128722444598463,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.128722444598463,"endHours":28.128722444598463,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.128722444598463,"endHours":29.128722444598463,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.128722444598463,"endHours":30.128722444598463,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-1.9355818881674265,"eotMinutes":9.840765594718077,"ayanamsa":24.9809}},"calendars":{"vikram_samvat":2137,"vikram_samvatsara":"Pramādī","saka_samvat":2002,"saka_samvatsara":"Śārvarī","bengali_samvat":1487,"malayalam_era":1256,"nanakshahi_year":611,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Trayodaśī · Vikram 2137 Pramādī · Śaka 2002 Śārvarī"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 September 27, 2080 CE · Ṛṣikeśa · Vidhyamitra","description":"September 27, 2080 CE for Ṛṣikeśa: Śukla Trayodaśī, sūryodaya 06:08, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2080-09-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2080-09-27","sa":"https://sa.vidhyamitra.com/city/rishikesh/2080-09-27","hi":"https://hi.vidhyamitra.com/city/rishikesh/2080-09-27","x-default":"https://vidhyamitra.com/city/rishikesh/2080-09-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T21:42:26.938Z","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":"2026-05-31T21:42:26.938Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T21:42:26.938Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}