{"id":"vidhyamitra:city-day:rishikesh:2101-09-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2101-09-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2101-09-23","date_display":"September 23, 2101 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":2101,"month":9,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488699.770833,"kali_year":5203,"ahargana":1900234.2708,"sun":{"sidereal_longitude":153.6359,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":149.2142,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.5784,"elapsed_within_tithi_degrees":7.5784},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.2142,"elapsed_within_degrees":2.5476},"yoga":{"number":23,"name":"Śubha","sum_longitude":302.8501},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":2101,"month":9,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488699.770833,"ahargana":1900234.2708,"kali_year":5203,"ayanamsa_lahiri":25.274,"grahas":{"sun":{"sidereal_longitude":154.62102500000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":151.10202500000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":-2.434},"mars":{"sidereal_longitude":52.359825,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":153.01132499999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":204.636525,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":199.31032500000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":190.09572500000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":296.4438,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":116.4438,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":2101,"month":9,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488699.770833,"kali_year":5203,"ahargana":1900234.2708,"sun":{"sidereal_longitude":153.6359,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":149.2142,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.5784,"elapsed_within_tithi_degrees":7.5784},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.2142,"elapsed_within_degrees":2.5476},"yoga":{"number":23,"name":"Śubha","sum_longitude":302.8501},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.434,"elongation":4.422},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.434,"opposition_distance":175.578}},"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":"06:05","sunsetLocal":"18:12","solarNoonLocal":"12:08","dayLengthHours":12.131588642013895,"dayLengthDisplay":"12 Hours 07 Mins 54 Secs","nightLengthDisplay":"11 Hours 52 Mins 06 Secs","moonriseLocal":"05:48","moonsetLocal":"18:00","rahuKala":{"name":"Rāhu Kāla","start":"10:38","end":"12:08","startHours":10.62511085308551,"endHours":12.141559433337246,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:10","end":"16:41","startHours":15.17445659384072,"endHours":16.690905174092457,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:36","end":"09:07","startHours":7.5922136925820345,"endHours":9.108662272833772,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:19","startHours":8.906469128800207,"endHours":9.310855416867337,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:35","end":"06:54","startHours":6.58124797241421,"endHours":6.904757002867914,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:33","startHours":11.737173145270116,"endHours":12.545945721404376,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:27","end":"05:16","startHours":4.458219960061778,"endHours":5.266992536196038,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:04","end":"06:05","startHours":5.064799392162473,"endHours":6.075765112330298,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:58","startHours":14.163490873672895,"endHours":14.972263449807155,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:00","end":"18:24","startHours":18.007353754344194,"endHours":18.407353754344193,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:12","end":"18:43","startHours":18.207353754344194,"endHours":18.712836614428106,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:57","end":"19:42","startHours":17.957353754344194,"endHours":19.707353754344194,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:33","startHours":23.737173145270116,"endHours":24.545945721404376,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:05","end":"07:36","startHours":6.075765112330298,"endHours":7.5922136925820345,"quality":"neutral"},{"name":"Labha","start":"07:36","end":"09:07","startHours":7.5922136925820345,"endHours":9.108662272833772,"quality":"auspicious"},{"name":"Amṛta","start":"09:07","end":"10:38","startHours":9.108662272833772,"endHours":10.62511085308551,"quality":"auspicious"},{"name":"Kāla","start":"10:38","end":"12:08","startHours":10.62511085308551,"endHours":12.141559433337246,"quality":"inauspicious"},{"name":"Śubha","start":"12:08","end":"13:39","startHours":12.141559433337246,"endHours":13.658008013588983,"quality":"auspicious"},{"name":"Roga","start":"13:39","end":"15:10","startHours":13.658008013588983,"endHours":15.17445659384072,"quality":"inauspicious"},{"name":"Udveg","start":"15:10","end":"16:41","startHours":15.17445659384072,"endHours":16.690905174092457,"quality":"inauspicious"},{"name":"Chala","start":"16:41","end":"18:12","startHours":16.690905174092457,"endHours":18.207353754344194,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:12","end":"19:41","startHours":18.207353754344194,"endHours":19.690905174092457,"quality":"inauspicious"},{"name":"Udveg","start":"19:41","end":"21:10","startHours":19.690905174092457,"endHours":21.17445659384072,"quality":"inauspicious"},{"name":"Chala","start":"21:10","end":"22:39","startHours":21.17445659384072,"endHours":22.658008013588983,"quality":"neutral"},{"name":"Labha","start":"22:39","end":"00:08","startHours":22.658008013588983,"endHours":24.141559433337246,"quality":"auspicious"},{"name":"Amṛta","start":"00:08","end":"01:38","startHours":24.141559433337246,"endHours":25.62511085308551,"quality":"auspicious"},{"name":"Kāla","start":"01:38","end":"03:07","startHours":25.62511085308551,"endHours":27.108662272833772,"quality":"inauspicious"},{"name":"Śubha","start":"03:07","end":"04:36","startHours":27.108662272833772,"endHours":28.592213692582035,"quality":"auspicious"},{"name":"Roga","start":"04:36","end":"06:05","startHours":28.592213692582035,"endHours":30.0757651123303,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:05","end":"07:05","startHours":6.075765112330298,"endHours":7.075765112330298,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:05","end":"08:05","startHours":7.075765112330298,"endHours":8.075765112330298,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:05","end":"09:05","startHours":8.075765112330298,"endHours":9.075765112330298,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:05","end":"10:05","startHours":9.075765112330298,"endHours":10.075765112330298,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:05","end":"11:05","startHours":10.075765112330298,"endHours":11.075765112330298,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:05","end":"12:05","startHours":11.075765112330298,"endHours":12.075765112330298,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:05","end":"13:05","startHours":12.075765112330298,"endHours":13.075765112330298,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:05","end":"14:05","startHours":13.075765112330298,"endHours":14.075765112330298,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:05","end":"15:05","startHours":14.075765112330298,"endHours":15.075765112330298,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:05","end":"16:05","startHours":15.075765112330298,"endHours":16.0757651123303,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:05","end":"17:05","startHours":16.0757651123303,"endHours":17.0757651123303,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:05","end":"18:05","startHours":17.0757651123303,"endHours":18.0757651123303,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:05","end":"19:05","startHours":18.0757651123303,"endHours":19.0757651123303,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:05","end":"20:05","startHours":19.0757651123303,"endHours":20.0757651123303,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:05","end":"21:05","startHours":20.0757651123303,"endHours":21.0757651123303,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:05","end":"22:05","startHours":21.0757651123303,"endHours":22.0757651123303,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:05","end":"23:05","startHours":22.0757651123303,"endHours":23.0757651123303,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:05","end":"00:05","startHours":23.0757651123303,"endHours":24.0757651123303,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:05","end":"01:05","startHours":24.0757651123303,"endHours":25.0757651123303,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:05","end":"02:05","startHours":25.0757651123303,"endHours":26.0757651123303,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:05","end":"03:05","startHours":26.0757651123303,"endHours":27.0757651123303,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:05","end":"04:05","startHours":27.0757651123303,"endHours":28.0757651123303,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:05","end":"05:05","startHours":28.0757651123303,"endHours":29.0757651123303,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:05","end":"06:05","startHours":29.0757651123303,"endHours":30.0757651123303,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"South-East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":0.04175194544723368,"eotMinutes":8.436033999765183,"ayanamsa":25.274}},"calendars":{"vikram_samvat":2158,"vikram_samvatsara":"Bhāva","saka_samvat":2023,"saka_samvatsara":"Durmati","bengali_samvat":1508,"malayalam_era":1277,"nanakshahi_year":632,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","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":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Amāvasyā · Vikram 2158 Bhāva · Śaka 2023 Durmati"},"festivals":[{"id":"mahalaya-amavasya","name":"Mahālaya Amāvasyā (Sarvapitṛ Amāvasyā)","name_sanskrit":"महालय अमावस्या","tradition":"Pan-Hindu","associated_deity":"Pitṛ-deva","significance":"Final day of Pitṛ-Pakṣa; tarpaṇa for all ancestors.","vrata":true,"detection":{"tithi_number":30,"tithi_paksha":"Kṛṣṇa","lunar_month":"Āśvina"},"precedence":1}],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","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 23, 2101 CE · Ṛṣikeśa · Vidhyamitra","description":"September 23, 2101 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 06:05, sūryāsta 18:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2101-09-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2101-09-23","sa":"https://sa.vidhyamitra.com/city/rishikesh/2101-09-23","hi":"https://hi.vidhyamitra.com/city/rishikesh/2101-09-23","x-default":"https://vidhyamitra.com/city/rishikesh/2101-09-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:36:39.146Z","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":"2026-05-31T06:36:39.146Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:36:39.146Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}