{"id":"vidhyamitra:city-day:erode:2177-09-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2177-09-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2177-09-21","date_display":"September 21, 2177 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":2177,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516456.770833,"kali_year":5279,"ahargana":1927991.2708,"sun":{"sidereal_longitude":151.036,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":135.9204,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":344.8845,"elapsed_within_tithi_degrees":8.8845},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":135.9204,"elapsed_within_degrees":2.5871},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.9564},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2177,"month":9,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2516456.770833,"ahargana":1927991.2708,"kali_year":5279,"ayanamsa_lahiri":26.3356,"grahas":{"sun":{"sidereal_longitude":152.20220300000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":135.178203,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false,"latitude":-3.4546},"mars":{"sidereal_longitude":145.238403,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":164.60760300000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":10.315702999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":134.329703,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":39.90890300000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":265.7443,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":85.7443,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"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":2177,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516456.770833,"kali_year":5279,"ahargana":1927991.2708,"sun":{"sidereal_longitude":151.036,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":135.9204,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":344.8845,"elapsed_within_tithi_degrees":8.8845},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":135.9204,"elapsed_within_degrees":2.5871},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.9564},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.455,"elongation":15.116},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.455,"opposition_distance":164.884}},"eclipse_window_40days":[]},"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:08","sunsetLocal":"18:15","solarNoonLocal":"12:11","dayLengthHours":12.128837669683625,"dayLengthDisplay":"12 Hours 07 Mins 44 Secs","nightLengthDisplay":"11 Hours 52 Mins 16 Secs","moonriseLocal":"04:55","moonsetLocal":"17:12","rahuKala":{"name":"Rāhu Kāla","start":"16:44","end":"18:15","startHours":16.738625336085754,"endHours":18.254730044796204,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:11","end":"13:42","startHours":12.190311209954391,"endHours":13.706415918664845,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:13","end":"16:44","startHours":15.222520627375298,"endHours":16.738625336085754,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:57","end":"09:22","startHours":8.955954498038759,"endHours":9.360249087028212,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.631260611349397,"endHours":6.954696282540961,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:36","startHours":11.786016620964936,"endHours":12.594605798943846,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:19","startHours":4.5087140191547626,"endHours":5.317303197133671,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:08","startHours":5.115155902638945,"endHours":6.12589237511258,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:01","startHours":14.211784154901663,"endHours":15.02037333288057,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:03","end":"18:27","startHours":18.054730044796205,"endHours":18.454730044796204,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:15","end":"18:46","startHours":18.254730044796204,"endHours":18.760098281033024,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:00","end":"19:45","startHours":18.004730044796204,"endHours":19.754730044796204,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:36","startHours":23.786016620964936,"endHours":24.594605798943846,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:08","end":"07:39","startHours":6.12589237511258,"endHours":7.641997083823033,"quality":"inauspicious"},{"name":"Chala","start":"07:39","end":"09:09","startHours":7.641997083823033,"endHours":9.158101792533486,"quality":"neutral"},{"name":"Labha","start":"09:09","end":"10:40","startHours":9.158101792533486,"endHours":10.674206501243939,"quality":"auspicious"},{"name":"Amṛta","start":"10:40","end":"12:11","startHours":10.674206501243939,"endHours":12.190311209954391,"quality":"auspicious"},{"name":"Kāla","start":"12:11","end":"13:42","startHours":12.190311209954391,"endHours":13.706415918664845,"quality":"inauspicious"},{"name":"Śubha","start":"13:42","end":"15:13","startHours":13.706415918664845,"endHours":15.222520627375298,"quality":"auspicious"},{"name":"Roga","start":"15:13","end":"16:44","startHours":15.222520627375298,"endHours":16.738625336085754,"quality":"inauspicious"},{"name":"Udveg","start":"16:44","end":"18:15","startHours":16.738625336085754,"endHours":18.254730044796204,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:15","end":"19:44","startHours":18.254730044796204,"endHours":19.73862533608575,"quality":"auspicious"},{"name":"Roga","start":"19:44","end":"21:13","startHours":19.73862533608575,"endHours":21.2225206273753,"quality":"inauspicious"},{"name":"Udveg","start":"21:13","end":"22:42","startHours":21.2225206273753,"endHours":22.706415918664845,"quality":"inauspicious"},{"name":"Chala","start":"22:42","end":"00:11","startHours":22.706415918664845,"endHours":24.19031120995439,"quality":"neutral"},{"name":"Labha","start":"00:11","end":"01:40","startHours":24.19031120995439,"endHours":25.674206501243937,"quality":"auspicious"},{"name":"Amṛta","start":"01:40","end":"03:09","startHours":25.674206501243937,"endHours":27.158101792533486,"quality":"auspicious"},{"name":"Kāla","start":"03:09","end":"04:39","startHours":27.158101792533486,"endHours":28.641997083823032,"quality":"inauspicious"},{"name":"Śubha","start":"04:39","end":"06:08","startHours":28.641997083823032,"endHours":30.125892375112578,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.12589237511258,"endHours":7.12589237511258,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.12589237511258,"endHours":8.12589237511258,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.12589237511258,"endHours":9.12589237511258,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.12589237511258,"endHours":10.12589237511258,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.12589237511258,"endHours":11.12589237511258,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.12589237511258,"endHours":12.12589237511258,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.12589237511258,"endHours":13.12589237511258,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.12589237511258,"endHours":14.12589237511258,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.12589237511258,"endHours":15.12589237511258,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.12589237511258,"endHours":16.125892375112578,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.125892375112578,"endHours":17.125892375112578,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.125892375112578,"endHours":18.125892375112578,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.125892375112578,"endHours":19.125892375112578,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.125892375112578,"endHours":20.125892375112578,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.125892375112578,"endHours":21.125892375112578,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.125892375112578,"endHours":22.125892375112578,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.125892375112578,"endHours":23.125892375112578,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.125892375112578,"endHours":24.125892375112578,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.125892375112578,"endHours":25.125892375112578,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.125892375112578,"endHours":26.125892375112578,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.125892375112578,"endHours":27.125892375112578,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.125892375112578,"endHours":28.125892375112578,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.125892375112578,"endHours":29.125892375112578,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.125892375112578,"endHours":30.125892375112578,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":0.5815100702801375,"eotMinutes":7.712527402736593,"ayanamsa":26.3356}},"calendars":{"vikram_samvat":2234,"vikram_samvatsara":"Vikṛti","saka_samvat":2099,"saka_samvatsara":"Īśvara","bengali_samvat":1584,"malayalam_era":1353,"nanakshahi_year":708,"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 Caturdaśī · Vikram 2234 Vikṛti · Śaka 2099 Īśvara"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"erode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga September 21, 2177 CE · Erode, Tamil Nadu · Vidhyamitra","description":"September 21, 2177 CE for Erode, Tamil Nadu: Kṛṣṇa Caturdaśī, sūryodaya 06:08, sūryāsta 18:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2177-09-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2177-09-21","sa":"https://sa.vidhyamitra.com/city/erode/2177-09-21","hi":"https://hi.vidhyamitra.com/city/erode/2177-09-21","x-default":"https://vidhyamitra.com/city/erode/2177-09-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T09:09:34.058Z","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":"2026-06-03T09:09:34.058Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T09:09:34.058Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}