{"id":"vidhyamitra:city-day:erode:1986-09-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1986-09-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-09-21","date_display":"September 21, 1986 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":1986,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446694.770833,"kali_year":5088,"ahargana":1858229.2708,"sun":{"sidereal_longitude":153.3986,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":9.1546,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":215.756,"elapsed_within_tithi_degrees":11.756},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.1546,"elapsed_within_degrees":9.1546},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":162.5533},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"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":1986,"month":9,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446694.770833,"ahargana":1858229.2708,"kali_year":5088,"ayanamsa_lahiri":23.6675,"grahas":{"sun":{"sidereal_longitude":154.10402499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":7.664325000000019,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":0.5544},"mars":{"sidereal_longitude":267.57702500000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":166.47052499999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":323.66882499999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":197.33922499999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":220.62712499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":2.0708,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":182.0708,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","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":1986,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446694.770833,"kali_year":5088,"ahargana":1858229.2708,"sun":{"sidereal_longitude":153.3986,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":9.1546,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":215.756,"elapsed_within_tithi_degrees":11.756},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.1546,"elapsed_within_degrees":9.1546},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":162.5533},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.554,"elongation":144.244},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.554,"opposition_distance":35.756}},"eclipse_window_40days":[{"offset_days":13,"type":"solar","occurs":true,"moon_latitude":1.033,"elongation":1.957}]},"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":"06:07","sunsetLocal":"18:16","solarNoonLocal":"12:11","dayLengthHours":12.136994580663744,"dayLengthDisplay":"12 Hours 08 Mins 13 Secs","nightLengthDisplay":"11 Hours 51 Mins 47 Secs","moonriseLocal":"20:14","moonsetLocal":"08:38","rahuKala":{"name":"Rāhu Kāla","start":"16:45","end":"18:16","startHours":16.7416841777033,"endHours":18.258808500286264,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:11","end":"13:42","startHours":12.190311209954391,"endHours":13.70743553253736,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:13","end":"16:45","startHours":15.224559855120328,"endHours":16.7416841777033,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:57","end":"09:22","startHours":8.953779321777393,"endHours":9.358345807799518,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.627522027150176,"endHours":6.951175215967876,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:36","startHours":11.785744723932266,"endHours":12.594877695976516,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:30","end":"05:19","startHours":4.503547975534021,"endHours":5.31268094757827,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.110397704567208,"endHours":6.12181391962252,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:01","startHours":14.213143640065017,"endHours":15.022276612109266,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:04","end":"18:28","startHours":18.058808500286265,"endHours":18.458808500286263,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:16","end":"18:46","startHours":18.258808500286264,"endHours":18.76451660781392,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:01","end":"19:46","startHours":18.008808500286264,"endHours":19.758808500286264,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:36","startHours":23.785744723932265,"endHours":24.594877695976518,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:07","end":"07:38","startHours":6.12181391962252,"endHours":7.638938242205488,"quality":"inauspicious"},{"name":"Chala","start":"07:38","end":"09:09","startHours":7.638938242205488,"endHours":9.156062564788456,"quality":"neutral"},{"name":"Labha","start":"09:09","end":"10:40","startHours":9.156062564788456,"endHours":10.673186887371424,"quality":"auspicious"},{"name":"Amṛta","start":"10:40","end":"12:11","startHours":10.673186887371424,"endHours":12.190311209954391,"quality":"auspicious"},{"name":"Kāla","start":"12:11","end":"13:42","startHours":12.190311209954391,"endHours":13.70743553253736,"quality":"inauspicious"},{"name":"Śubha","start":"13:42","end":"15:13","startHours":13.70743553253736,"endHours":15.224559855120328,"quality":"auspicious"},{"name":"Roga","start":"15:13","end":"16:45","startHours":15.224559855120328,"endHours":16.7416841777033,"quality":"inauspicious"},{"name":"Udveg","start":"16:45","end":"18:16","startHours":16.7416841777033,"endHours":18.258808500286264,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:16","end":"19:45","startHours":18.258808500286264,"endHours":19.741684177703295,"quality":"auspicious"},{"name":"Roga","start":"19:45","end":"21:13","startHours":19.741684177703295,"endHours":21.22455985512033,"quality":"inauspicious"},{"name":"Udveg","start":"21:13","end":"22:42","startHours":21.22455985512033,"endHours":22.70743553253736,"quality":"inauspicious"},{"name":"Chala","start":"22:42","end":"00:11","startHours":22.70743553253736,"endHours":24.19031120995439,"quality":"neutral"},{"name":"Labha","start":"00:11","end":"01:40","startHours":24.19031120995439,"endHours":25.673186887371422,"quality":"auspicious"},{"name":"Amṛta","start":"01:40","end":"03:09","startHours":25.673186887371422,"endHours":27.156062564788456,"quality":"auspicious"},{"name":"Kāla","start":"03:09","end":"04:38","startHours":27.156062564788456,"endHours":28.638938242205487,"quality":"inauspicious"},{"name":"Śubha","start":"04:38","end":"06:07","startHours":28.638938242205487,"endHours":30.121813919622518,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.12181391962252,"endHours":7.12181391962252,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.12181391962252,"endHours":8.12181391962252,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.12181391962252,"endHours":9.12181391962252,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.12181391962252,"endHours":10.12181391962252,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.12181391962252,"endHours":11.12181391962252,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.12181391962252,"endHours":12.12181391962252,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.12181391962252,"endHours":13.12181391962252,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.12181391962252,"endHours":14.12181391962252,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.12181391962252,"endHours":15.12181391962252,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.12181391962252,"endHours":16.121813919622518,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.121813919622518,"endHours":17.121813919622518,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.121813919622518,"endHours":18.121813919622518,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.121813919622518,"endHours":19.121813919622518,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.121813919622518,"endHours":20.121813919622518,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.121813919622518,"endHours":21.121813919622518,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.121813919622518,"endHours":22.121813919622518,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.121813919622518,"endHours":23.121813919622518,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.121813919622518,"endHours":24.121813919622518,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.121813919622518,"endHours":25.121813919622518,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.121813919622518,"endHours":26.121813919622518,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.121813919622518,"endHours":27.121813919622518,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.121813919622518,"endHours":28.121813919622518,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.121813919622518,"endHours":29.121813919622518,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.121813919622518,"endHours":30.121813919622518,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":0.8861487219502667,"eotMinutes":7.712527402736593,"ayanamsa":23.6675}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"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 Tṛtīyā · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"festivals":[],"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":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"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, 1986 CE · Erode, Tamil Nadu · Vidhyamitra","description":"September 21, 1986 CE for Erode, Tamil Nadu: Kṛṣṇa Tṛtīyā, sūryodaya 06:07, sūryāsta 18:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1986-09-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1986-09-21","sa":"https://sa.vidhyamitra.com/city/erode/1986-09-21","hi":"https://hi.vidhyamitra.com/city/erode/1986-09-21","x-default":"https://vidhyamitra.com/city/erode/1986-09-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T16:25:31.771Z","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":"2026-06-02T16:25:31.771Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T16:25:31.771Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}