{"id":"vidhyamitra:city-day:erode:1987-10-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1987-10-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-10-04","date_display":"October 4, 1987 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":1987,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447072.770833,"kali_year":5089,"ahargana":1858607.2708,"sun":{"sidereal_longitude":165.8904,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":305.9503,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":140.0599,"elapsed_within_tithi_degrees":8.0599},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":305.9503,"elapsed_within_degrees":12.617},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.8408},"karana":{"half_tithi_index":23,"name":"Bālava"},"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":1987,"month":10,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447072.770833,"ahargana":1858607.2708,"kali_year":5089,"ayanamsa_lahiri":23.682,"grahas":{"sun":{"sidereal_longitude":166.60638200000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"moon":{"sidereal_longitude":304.742982,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false,"latitude":-2.6491},"mars":{"sidereal_longitude":153.42568200000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":192.432282,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":3.6237820000000056,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":178.02378199999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":232.170482,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":342.0425,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":162.0425,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":1987,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447072.770833,"kali_year":5089,"ahargana":1858607.2708,"sun":{"sidereal_longitude":165.8904,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":305.9503,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":140.0599,"elapsed_within_tithi_degrees":8.0599},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":305.9503,"elapsed_within_degrees":12.617},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.8408},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.649,"elongation":140.06},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.649,"opposition_distance":39.94}},"eclipse_window_40days":[{"offset_days":-11,"type":"solar","occurs":true,"moon_latitude":0.684,"elongation":1.231},{"offset_days":3,"type":"lunar","occurs":true,"moon_latitude":0.545,"opposition_distance":0.003}]},"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":"18:07","solarNoonLocal":"12:07","dayLengthHours":12.004444543265576,"dayLengthDisplay":"12 Hours 00 Mins 16 Secs","nightLengthDisplay":"11 Hours 59 Mins 44 Secs","moonriseLocal":"15:27","moonsetLocal":"03:12","rahuKala":{"name":"Rāhu Kāla","start":"16:37","end":"18:07","startHours":16.61890231726309,"endHours":18.119457885171286,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:07","end":"13:37","startHours":12.117235613538497,"endHours":13.617791181446695,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:07","end":"16:37","startHours":15.118346749354892,"endHours":16.61890231726309,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:19","startHours":8.916050402001012,"endHours":9.316198553443197,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.615198531208442,"endHours":6.9353170523621905,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:31","startHours":11.71708746209631,"endHours":12.517383764980684,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:19","startHours":4.514420736136967,"endHours":5.314717039021339,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.114642963300246,"endHours":6.11501334190571,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:55","startHours":14.117976370749426,"endHours":14.918272673633798,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.919457885171287,"endHours":18.319457885171285,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:37","startHours":18.119457885171286,"endHours":18.61964307447402,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.869457885171286,"endHours":19.619457885171286,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:31","startHours":23.717087462096313,"endHours":24.517383764980682,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:07","end":"07:37","startHours":6.11501334190571,"endHours":7.615568909813907,"quality":"inauspicious"},{"name":"Chala","start":"07:37","end":"09:07","startHours":7.615568909813907,"endHours":9.116124477722105,"quality":"neutral"},{"name":"Labha","start":"09:07","end":"10:37","startHours":9.116124477722105,"endHours":10.6166800456303,"quality":"auspicious"},{"name":"Amṛta","start":"10:37","end":"12:07","startHours":10.6166800456303,"endHours":12.117235613538497,"quality":"auspicious"},{"name":"Kāla","start":"12:07","end":"13:37","startHours":12.117235613538497,"endHours":13.617791181446695,"quality":"inauspicious"},{"name":"Śubha","start":"13:37","end":"15:07","startHours":13.617791181446695,"endHours":15.118346749354892,"quality":"auspicious"},{"name":"Roga","start":"15:07","end":"16:37","startHours":15.118346749354892,"endHours":16.61890231726309,"quality":"inauspicious"},{"name":"Udveg","start":"16:37","end":"18:07","startHours":16.61890231726309,"endHours":18.119457885171286,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:07","end":"19:37","startHours":18.119457885171286,"endHours":19.61890231726309,"quality":"auspicious"},{"name":"Roga","start":"19:37","end":"21:07","startHours":19.61890231726309,"endHours":21.11834674935489,"quality":"inauspicious"},{"name":"Udveg","start":"21:07","end":"22:37","startHours":21.11834674935489,"endHours":22.617791181446695,"quality":"inauspicious"},{"name":"Chala","start":"22:37","end":"00:07","startHours":22.617791181446695,"endHours":24.117235613538497,"quality":"neutral"},{"name":"Labha","start":"00:07","end":"01:37","startHours":24.117235613538497,"endHours":25.6166800456303,"quality":"auspicious"},{"name":"Amṛta","start":"01:37","end":"03:07","startHours":25.6166800456303,"endHours":27.116124477722103,"quality":"auspicious"},{"name":"Kāla","start":"03:07","end":"04:37","startHours":27.116124477722103,"endHours":28.61556890981391,"quality":"inauspicious"},{"name":"Śubha","start":"04:37","end":"06:07","startHours":28.61556890981391,"endHours":30.11501334190571,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.11501334190571,"endHours":7.11501334190571,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.11501334190571,"endHours":8.11501334190571,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.11501334190571,"endHours":9.11501334190571,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.11501334190571,"endHours":10.11501334190571,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.11501334190571,"endHours":11.11501334190571,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.11501334190571,"endHours":12.11501334190571,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.11501334190571,"endHours":13.11501334190571,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.11501334190571,"endHours":14.11501334190571,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.11501334190571,"endHours":15.11501334190571,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.11501334190571,"endHours":16.11501334190571,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.11501334190571,"endHours":17.11501334190571,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.11501334190571,"endHours":18.11501334190571,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.11501334190571,"endHours":19.11501334190571,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.11501334190571,"endHours":20.11501334190571,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.11501334190571,"endHours":21.11501334190571,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.11501334190571,"endHours":22.11501334190571,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.11501334190571,"endHours":23.11501334190571,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.11501334190571,"endHours":24.11501334190571,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.11501334190571,"endHours":25.11501334190571,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.11501334190571,"endHours":26.11501334190571,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.11501334190571,"endHours":27.11501334190571,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.11501334190571,"endHours":28.11501334190571,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.11501334190571,"endHours":29.11501334190571,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.11501334190571,"endHours":30.11501334190571,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-4.073499196436298,"eotMinutes":12.09706318769023,"ayanamsa":23.682}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"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":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Dvādaśī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"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":[]},"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 October 4, 1987 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 4, 1987 CE for Erode, Tamil Nadu: Śukla Dvādaśī, sūryodaya 06:07, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1987-10-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1987-10-04","sa":"https://sa.vidhyamitra.com/city/erode/1987-10-04","hi":"https://hi.vidhyamitra.com/city/erode/1987-10-04","x-default":"https://vidhyamitra.com/city/erode/1987-10-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T00:31:48.491Z","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":"2026-05-31T00:31:48.491Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T00:31:48.491Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}