{"id":"vidhyamitra:city-day:ayodhya:2100-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2100-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2100-01-21","date_display":"January 21, 2100 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":2100,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488089.770833,"kali_year":5201,"ahargana":1899624.2708,"sun":{"sidereal_longitude":275.4751,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":33.9313,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":118.4562,"elapsed_within_tithi_degrees":10.4562},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":33.9313,"elapsed_within_degrees":7.2646},"yoga":{"number":24,"name":"Śukla","sum_longitude":309.4064},"karana":{"half_tithi_index":19,"name":"Gara"},"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":2100,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488089.770833,"ahargana":1899624.2708,"kali_year":5201,"ayanamsa_lahiri":25.2507,"grahas":{"sun":{"sidereal_longitude":275.78393099999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":33.46253100000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":4.0832},"mars":{"sidereal_longitude":11.909731000000022,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":292.70143099999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":176.24263099999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":317.217031,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":179.96693099999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":328.7645,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":148.7645,"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":2100,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488089.770833,"kali_year":5201,"ahargana":1899624.2708,"sun":{"sidereal_longitude":275.4751,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":33.9313,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":118.4562,"elapsed_within_tithi_degrees":10.4562},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":33.9313,"elapsed_within_degrees":7.2646},"yoga":{"number":24,"name":"Śukla","sum_longitude":309.4064},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.083,"elongation":118.456},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.083,"opposition_distance":61.544}},"eclipse_window_40days":[]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:51","sunsetLocal":"17:34","solarNoonLocal":"12:12","dayLengthHours":10.727664380727347,"dayLengthDisplay":"10 Hours 43 Mins 40 Secs","nightLengthDisplay":"13 Hours 16 Mins 20 Secs","moonriseLocal":"13:18","moonsetLocal":"02:48","rahuKala":{"name":"Rāhu Kāla","start":"13:33","end":"14:53","startHours":13.548286901743122,"endHours":14.889244949334039,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:51","end":"08:11","startHours":6.843496663788529,"endHours":8.184454711379448,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:32","end":"10:52","startHours":9.525412758970365,"endHours":10.866370806561285,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:42","startHours":9.34661835262491,"endHours":9.704207165315822,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:17","end":"07:35","startHours":7.290482679652168,"endHours":7.576553729804898,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:34","startHours":11.84974004146129,"endHours":12.564917666843114,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:25","end":"06:08","startHours":5.413141413024883,"endHours":6.128319038406706,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:57","end":"06:51","startHours":5.94952463206125,"endHours":6.843496663788529,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:43","startHours":13.995272917606762,"endHours":14.710450542988585,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:22","end":"17:46","startHours":17.371161044515876,"endHours":17.771161044515875,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:34","end":"18:01","startHours":17.571161044515875,"endHours":18.018147060379516,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:19","end":"19:04","startHours":17.321161044515875,"endHours":19.071161044515875,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:34","startHours":23.849740041461292,"endHours":24.56491766684311,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:51","end":"08:11","startHours":6.843496663788529,"endHours":8.184454711379448,"quality":"auspicious"},{"name":"Roga","start":"08:11","end":"09:32","startHours":8.184454711379448,"endHours":9.525412758970365,"quality":"inauspicious"},{"name":"Udveg","start":"09:32","end":"10:52","startHours":9.525412758970365,"endHours":10.866370806561285,"quality":"inauspicious"},{"name":"Chala","start":"10:52","end":"12:12","startHours":10.866370806561285,"endHours":12.207328854152202,"quality":"neutral"},{"name":"Labha","start":"12:12","end":"13:33","startHours":12.207328854152202,"endHours":13.548286901743122,"quality":"auspicious"},{"name":"Amṛta","start":"13:33","end":"14:53","startHours":13.548286901743122,"endHours":14.889244949334039,"quality":"auspicious"},{"name":"Kāla","start":"14:53","end":"16:14","startHours":14.889244949334039,"endHours":16.23020299692496,"quality":"inauspicious"},{"name":"Śubha","start":"16:14","end":"17:34","startHours":16.23020299692496,"endHours":17.571161044515875,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:34","end":"19:14","startHours":17.571161044515875,"endHours":19.23020299692496,"quality":"auspicious"},{"name":"Kāla","start":"19:14","end":"20:53","startHours":19.23020299692496,"endHours":20.88924494933404,"quality":"inauspicious"},{"name":"Śubha","start":"20:53","end":"22:33","startHours":20.88924494933404,"endHours":22.54828690174312,"quality":"auspicious"},{"name":"Roga","start":"22:33","end":"00:12","startHours":22.54828690174312,"endHours":24.207328854152202,"quality":"inauspicious"},{"name":"Udveg","start":"00:12","end":"01:52","startHours":24.207328854152202,"endHours":25.866370806561285,"quality":"inauspicious"},{"name":"Chala","start":"01:52","end":"03:32","startHours":25.866370806561285,"endHours":27.525412758970365,"quality":"neutral"},{"name":"Labha","start":"03:32","end":"05:11","startHours":27.525412758970365,"endHours":29.184454711379445,"quality":"auspicious"},{"name":"Amṛta","start":"05:11","end":"06:51","startHours":29.184454711379445,"endHours":30.843496663788528,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:51","end":"07:51","startHours":6.843496663788529,"endHours":7.843496663788529,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:51","end":"08:51","startHours":7.843496663788529,"endHours":8.843496663788528,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:51","end":"09:51","startHours":8.843496663788528,"endHours":9.843496663788528,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:51","end":"10:51","startHours":9.843496663788528,"endHours":10.843496663788528,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:51","end":"11:51","startHours":10.843496663788528,"endHours":11.843496663788528,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:51","end":"12:51","startHours":11.843496663788528,"endHours":12.843496663788528,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:51","end":"13:51","startHours":12.843496663788528,"endHours":13.843496663788528,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:51","end":"14:51","startHours":13.843496663788528,"endHours":14.843496663788528,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:51","end":"15:51","startHours":14.843496663788528,"endHours":15.843496663788528,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:51","end":"16:51","startHours":15.843496663788528,"endHours":16.843496663788528,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:51","end":"17:51","startHours":16.843496663788528,"endHours":17.843496663788528,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:51","end":"18:51","startHours":17.843496663788528,"endHours":18.843496663788528,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:51","end":"19:51","startHours":18.843496663788528,"endHours":19.843496663788528,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:51","end":"20:51","startHours":19.843496663788528,"endHours":20.843496663788528,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:51","end":"21:51","startHours":20.843496663788528,"endHours":21.843496663788528,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:51","end":"22:51","startHours":21.843496663788528,"endHours":22.843496663788528,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:51","end":"23:51","startHours":22.843496663788528,"endHours":23.843496663788528,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:51","end":"00:51","startHours":23.843496663788528,"endHours":24.843496663788528,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:51","end":"01:51","startHours":24.843496663788528,"endHours":25.843496663788528,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:51","end":"02:51","startHours":25.843496663788528,"endHours":26.843496663788528,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:51","end":"03:51","startHours":26.843496663788528,"endHours":27.843496663788528,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:51","end":"04:51","startHours":27.843496663788528,"endHours":28.843496663788528,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:51","end":"05:51","startHours":28.843496663788528,"endHours":29.843496663788528,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:51","end":"06:51","startHours":29.843496663788528,"endHours":30.843496663788528,"planetary_lord":"Moon"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-19.92558427768583,"eotMinutes":-11.255731249132124,"ayanamsa":25.2507}},"calendars":{"vikram_samvat":2157,"vikram_samvatsara":"Śrīmukha","saka_samvat":2022,"saka_samvatsara":"Raudra","bengali_samvat":1507,"malayalam_era":1276,"nanakshahi_year":631,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Daśamī · Vikram 2157 Śrīmukha · Śaka 2022 Raudra"},"festivals":[],"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":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"ayodhya"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 21, 2100 CE · Ayodhyā · Vidhyamitra","description":"January 21, 2100 CE for Ayodhyā: Śukla Daśamī, sūryodaya 06:51, sūryāsta 17:34.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2100-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2100-01-21","sa":"https://sa.vidhyamitra.com/city/ayodhya/2100-01-21","hi":"https://hi.vidhyamitra.com/city/ayodhya/2100-01-21","x-default":"https://vidhyamitra.com/city/ayodhya/2100-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T22:11:58.370Z","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":"2026-05-31T22:11:58.370Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T22:11:58.370Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}