{"id":"vidhyamitra:city-day:vrindavan:2154-10-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2154-10-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2154-10-21","date_display":"October 21, 2154 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":2154,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508085.770833,"kali_year":5256,"ahargana":1919620.2708,"sun":{"sidereal_longitude":180.5305,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":358.0183,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.4877,"elapsed_within_tithi_degrees":9.4877},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.0183,"elapsed_within_degrees":11.3516},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":178.5488},"karana":{"half_tithi_index":29,"name":"Bava"},"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":2154,"month":10,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508085.770833,"ahargana":1919620.2708,"kali_year":5256,"ayanamsa_lahiri":26.0155,"grahas":{"sun":{"sidereal_longitude":181.632337,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":357.487237,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":0.6829},"mars":{"sidereal_longitude":118.80723699999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":172.159537,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":36.53773699999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":140.52783699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":127.12733700000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":349.2802,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":169.2802,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":2154,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508085.770833,"kali_year":5256,"ahargana":1919620.2708,"sun":{"sidereal_longitude":180.5305,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":358.0183,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.4877,"elapsed_within_tithi_degrees":9.4877},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.0183,"elapsed_within_degrees":11.3516},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":178.5488},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.683,"elongation":177.488},"lunar":{"type":"lunar","occurs":true,"moon_latitude":0.683,"opposition_distance":2.512}},"eclipse_window_40days":[{"offset_days":0,"type":"lunar","occurs":true,"moon_latitude":0.683,"opposition_distance":2.512}]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:22","sunsetLocal":"17:45","solarNoonLocal":"12:04","dayLengthHours":11.377913849216819,"dayLengthDisplay":"11 Hours 22 Mins 40 Secs","nightLengthDisplay":"12 Hours 37 Mins 20 Secs","moonriseLocal":"17:25","moonsetLocal":"06:09","rahuKala":{"name":"Rāhu Kāla","start":"07:48","end":"09:13","startHours":7.79217196376528,"endHours":9.214411194917382,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:38","end":"12:04","startHours":10.636650426069485,"endHours":12.058889657221588,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:29","end":"14:54","startHours":13.48112888837369,"endHours":14.903368119525792,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:24","startHours":9.024779297430435,"endHours":9.40404309240433,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:09","startHours":6.844012476330545,"endHours":7.14742351230966,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:41","end":"12:26","startHours":11.679625862247693,"endHours":12.438153452195483,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:51","end":"05:37","startHours":4.852877552717602,"endHours":5.61140514266539,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:25","end":"06:22","startHours":5.421773245178443,"endHours":6.369932732613178,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:57","end":"14:43","startHours":13.955208632091058,"endHours":14.713736222038845,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:33","end":"17:57","startHours":17.547846581829997,"endHours":17.947846581829996,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:45","end":"18:13","startHours":17.747846581829997,"endHours":18.221926325547365,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:30","end":"19:15","startHours":17.497846581829997,"endHours":19.247846581829997,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:41","end":"00:26","startHours":23.679625862247693,"endHours":24.438153452195483,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:22","end":"07:48","startHours":6.369932732613178,"endHours":7.79217196376528,"quality":"auspicious"},{"name":"Kāla","start":"07:48","end":"09:13","startHours":7.79217196376528,"endHours":9.214411194917382,"quality":"inauspicious"},{"name":"Śubha","start":"09:13","end":"10:38","startHours":9.214411194917382,"endHours":10.636650426069485,"quality":"auspicious"},{"name":"Roga","start":"10:38","end":"12:04","startHours":10.636650426069485,"endHours":12.058889657221588,"quality":"inauspicious"},{"name":"Udveg","start":"12:04","end":"13:29","startHours":12.058889657221588,"endHours":13.48112888837369,"quality":"inauspicious"},{"name":"Chala","start":"13:29","end":"14:54","startHours":13.48112888837369,"endHours":14.903368119525792,"quality":"neutral"},{"name":"Labha","start":"14:54","end":"16:20","startHours":14.903368119525792,"endHours":16.325607350677892,"quality":"auspicious"},{"name":"Amṛta","start":"16:20","end":"17:45","startHours":16.325607350677892,"endHours":17.747846581829997,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:45","end":"19:20","startHours":17.747846581829997,"endHours":19.325607350677895,"quality":"neutral"},{"name":"Labha","start":"19:20","end":"20:54","startHours":19.325607350677895,"endHours":20.90336811952579,"quality":"auspicious"},{"name":"Amṛta","start":"20:54","end":"22:29","startHours":20.90336811952579,"endHours":22.48112888837369,"quality":"auspicious"},{"name":"Kāla","start":"22:29","end":"00:04","startHours":22.48112888837369,"endHours":24.058889657221588,"quality":"inauspicious"},{"name":"Śubha","start":"00:04","end":"01:38","startHours":24.058889657221588,"endHours":25.636650426069487,"quality":"auspicious"},{"name":"Roga","start":"01:38","end":"03:13","startHours":25.636650426069487,"endHours":27.214411194917382,"quality":"inauspicious"},{"name":"Udveg","start":"03:13","end":"04:48","startHours":27.214411194917382,"endHours":28.79217196376528,"quality":"inauspicious"},{"name":"Chala","start":"04:48","end":"06:22","startHours":28.79217196376528,"endHours":30.36993273261318,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:22","end":"07:22","startHours":6.369932732613178,"endHours":7.369932732613178,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:22","end":"08:22","startHours":7.369932732613178,"endHours":8.369932732613178,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:22","end":"09:22","startHours":8.369932732613178,"endHours":9.369932732613178,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:22","end":"10:22","startHours":9.369932732613178,"endHours":10.369932732613178,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:22","end":"11:22","startHours":10.369932732613178,"endHours":11.369932732613178,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:22","end":"12:22","startHours":11.369932732613178,"endHours":12.369932732613178,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:22","end":"13:22","startHours":12.369932732613178,"endHours":13.369932732613178,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:22","end":"14:22","startHours":13.369932732613178,"endHours":14.369932732613178,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:22","end":"15:22","startHours":14.369932732613178,"endHours":15.369932732613178,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:22","end":"16:22","startHours":15.369932732613178,"endHours":16.36993273261318,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:22","end":"17:22","startHours":16.36993273261318,"endHours":17.36993273261318,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:22","end":"18:22","startHours":17.36993273261318,"endHours":18.36993273261318,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:22","end":"19:22","startHours":18.36993273261318,"endHours":19.36993273261318,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:22","end":"20:22","startHours":19.36993273261318,"endHours":20.36993273261318,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:22","end":"21:22","startHours":20.36993273261318,"endHours":21.36993273261318,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:22","end":"22:22","startHours":21.36993273261318,"endHours":22.36993273261318,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:22","end":"23:22","startHours":22.36993273261318,"endHours":23.36993273261318,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:22","end":"00:22","startHours":23.36993273261318,"endHours":24.36993273261318,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:22","end":"01:22","startHours":24.36993273261318,"endHours":25.36993273261318,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:22","end":"02:22","startHours":25.36993273261318,"endHours":26.36993273261318,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:22","end":"03:22","startHours":26.36993273261318,"endHours":27.36993273261318,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:22","end":"04:22","startHours":27.36993273261318,"endHours":28.36993273261318,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:22","end":"05:22","startHours":28.36993273261318,"endHours":29.36993273261318,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:22","end":"06:22","startHours":29.36993273261318,"endHours":30.36993273261318,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.635602455077045,"eotMinutes":15.829420566704727,"ayanamsa":26.0155}},"calendars":{"vikram_samvat":2211,"vikram_samvatsara":"Prabhava","saka_samvat":2076,"saka_samvatsara":"Ānanda","bengali_samvat":1561,"malayalam_era":1330,"nanakshahi_year":685,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Pūrṇimā · Vikram 2211 Prabhava · Śaka 2076 Ānanda"},"festivals":[{"id":"sharad-purnima","name":"Śarad Pūrṇimā / Kojāgarī Pūrṇimā","name_sanskrit":"शरद पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Lakṣmī","significance":"Krishna's Mahā-rāsa with the gopīs at Vṛndāvana. Lakṣmī wakes (\"ko jāgartti?\")","vrata":true,"primary_observance":"Night-long jāgaraṇa; offering of pāyasa under moonlight","detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2,"sources":["Bhāgavata 10.29-33"]},{"id":"rasa-purnima","name":"Rāsa Pūrṇimā (Vraja Mahā-Rāsa)","name_sanskrit":"रास पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Gopīs","significance":"Krishna's Mahā-rāsa with the gopīs at Vraja (Bhāgavata 10.29-33). Same as Śarad Pūrṇimā but emphasized in Vraja tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2},{"id":"valmiki-jayanti","name":"Mahārṣi Vālmīki Jayantī","name_sanskrit":"महर्षि वाल्मीकि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Maharṣi Vālmīki (ādi-kavi)","significance":"Composer of Vālmīki Rāmāyaṇa. Āśvina Pūrṇimā tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":3}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 21, 2154 CE · Vṛndāvana · Vidhyamitra","description":"October 21, 2154 CE for Vṛndāvana: Śukla Pūrṇimā, sūryodaya 06:22, sūryāsta 17:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2154-10-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2154-10-21","sa":"https://sa.vidhyamitra.com/city/vrindavan/2154-10-21","hi":"https://hi.vidhyamitra.com/city/vrindavan/2154-10-21","x-default":"https://vidhyamitra.com/city/vrindavan/2154-10-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T13:11:50.812Z","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":"2026-06-01T13:11:50.812Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T13:11:50.812Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}