{"id":"vidhyamitra:city-day:erode:1987-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1987-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-02-07","date_display":"February 7, 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":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446833.770833,"kali_year":5088,"ahargana":1858368.2708,"sun":{"sidereal_longitude":294.1316,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":36.924,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":102.7925,"elapsed_within_tithi_degrees":6.7925},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":36.924,"elapsed_within_degrees":10.2574},"yoga":{"number":25,"name":"Brahma","sum_longitude":331.0556},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446833.770833,"ahargana":1858368.2708,"kali_year":5088,"ayanamsa_lahiri":23.6728,"grahas":{"sun":{"sidereal_longitude":294.04761400000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":39.08891399999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":3.0221},"mars":{"sidereal_longitude":357.094914,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":311.071514,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":331.67271400000004,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":248.59671400000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":234.95481399999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":354.7059,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":174.7059,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446833.770833,"kali_year":5088,"ahargana":1858368.2708,"sun":{"sidereal_longitude":294.1316,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":36.924,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":102.7925,"elapsed_within_tithi_degrees":6.7925},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":36.924,"elapsed_within_degrees":10.2574},"yoga":{"number":25,"name":"Brahma","sum_longitude":331.0556},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.022,"elongation":102.792},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.022,"opposition_distance":77.208}},"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":"06:43","sunsetLocal":"18:24","solarNoonLocal":"12:34","dayLengthHours":11.691987202987157,"dayLengthDisplay":"11 Hours 41 Mins 31 Secs","nightLengthDisplay":"12 Hours 18 Mins 29 Secs","moonriseLocal":"13:14","moonsetLocal":"01:54","rahuKala":{"name":"Rāhu Kāla","start":"09:38","end":"11:06","startHours":9.635484074409321,"endHours":11.096982474782717,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:01","end":"15:29","startHours":14.019979275529504,"endHours":15.4814776759029,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:43","end":"08:10","startHours":6.712487273662532,"endHours":8.173985674035926,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:50","startHours":9.440617621026202,"endHours":9.83035052779244,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:12","end":"07:31","startHours":7.19965340712033,"endHours":7.51143973253332,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:57","startHours":12.168747968389871,"endHours":12.94821378192235,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:09","end":"05:56","startHours":5.153555646597578,"endHours":5.933021460130055,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:44","end":"06:43","startHours":5.738155006746935,"endHours":6.712487273662532,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:17","startHours":14.507145408987302,"endHours":15.28661122251978,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:12","end":"18:36","startHours":18.20447447664969,"endHours":18.60447447664969,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:24","end":"18:53","startHours":18.40447447664969,"endHours":18.891640610107487,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:09","end":"19:54","startHours":18.15447447664969,"endHours":19.90447447664969,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:57","startHours":24.168747968389873,"endHours":24.948213781922348,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:43","end":"08:10","startHours":6.712487273662532,"endHours":8.173985674035926,"quality":"inauspicious"},{"name":"Śubha","start":"08:10","end":"09:38","startHours":8.173985674035926,"endHours":9.635484074409321,"quality":"auspicious"},{"name":"Roga","start":"09:38","end":"11:06","startHours":9.635484074409321,"endHours":11.096982474782717,"quality":"inauspicious"},{"name":"Udveg","start":"11:06","end":"12:34","startHours":11.096982474782717,"endHours":12.55848087515611,"quality":"inauspicious"},{"name":"Chala","start":"12:34","end":"14:01","startHours":12.55848087515611,"endHours":14.019979275529504,"quality":"neutral"},{"name":"Labha","start":"14:01","end":"15:29","startHours":14.019979275529504,"endHours":15.4814776759029,"quality":"auspicious"},{"name":"Amṛta","start":"15:29","end":"16:57","startHours":15.4814776759029,"endHours":16.942976076276295,"quality":"auspicious"},{"name":"Kāla","start":"16:57","end":"18:24","startHours":16.942976076276295,"endHours":18.40447447664969,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:24","end":"19:57","startHours":18.40447447664969,"endHours":19.942976076276295,"quality":"auspicious"},{"name":"Amṛta","start":"19:57","end":"21:29","startHours":19.942976076276295,"endHours":21.4814776759029,"quality":"auspicious"},{"name":"Kāla","start":"21:29","end":"23:01","startHours":21.4814776759029,"endHours":23.019979275529504,"quality":"inauspicious"},{"name":"Śubha","start":"23:01","end":"00:34","startHours":23.019979275529504,"endHours":24.55848087515611,"quality":"auspicious"},{"name":"Roga","start":"00:34","end":"02:06","startHours":24.55848087515611,"endHours":26.096982474782717,"quality":"inauspicious"},{"name":"Udveg","start":"02:06","end":"03:38","startHours":26.096982474782717,"endHours":27.63548407440932,"quality":"inauspicious"},{"name":"Chala","start":"03:38","end":"05:10","startHours":27.63548407440932,"endHours":29.173985674035926,"quality":"neutral"},{"name":"Labha","start":"05:10","end":"06:43","startHours":29.173985674035926,"endHours":30.712487273662532,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:43","end":"07:43","startHours":6.712487273662532,"endHours":7.712487273662532,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:43","end":"08:43","startHours":7.712487273662532,"endHours":8.712487273662532,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:43","end":"09:43","startHours":8.712487273662532,"endHours":9.712487273662532,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:43","end":"10:43","startHours":9.712487273662532,"endHours":10.712487273662532,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:43","end":"11:43","startHours":10.712487273662532,"endHours":11.712487273662532,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:43","end":"12:43","startHours":11.712487273662532,"endHours":12.712487273662532,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:43","end":"13:43","startHours":12.712487273662532,"endHours":13.712487273662532,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:43","end":"14:43","startHours":13.712487273662532,"endHours":14.712487273662532,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:43","end":"15:43","startHours":14.712487273662532,"endHours":15.712487273662532,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:43","end":"16:43","startHours":15.712487273662532,"endHours":16.712487273662532,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:43","end":"17:43","startHours":16.712487273662532,"endHours":17.712487273662532,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:43","end":"18:43","startHours":17.712487273662532,"endHours":18.712487273662532,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:43","end":"19:43","startHours":18.712487273662532,"endHours":19.712487273662532,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:43","end":"20:43","startHours":19.712487273662532,"endHours":20.712487273662532,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:43","end":"21:43","startHours":20.712487273662532,"endHours":21.712487273662532,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:43","end":"22:43","startHours":21.712487273662532,"endHours":22.712487273662532,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:43","end":"23:43","startHours":22.712487273662532,"endHours":23.712487273662532,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:43","end":"00:43","startHours":23.712487273662532,"endHours":24.712487273662532,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:43","end":"01:43","startHours":24.712487273662532,"endHours":25.712487273662532,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:43","end":"02:43","startHours":25.712487273662532,"endHours":26.712487273662532,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:43","end":"03:43","startHours":26.712487273662532,"endHours":27.712487273662532,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:43","end":"04:43","startHours":27.712487273662532,"endHours":28.712487273662532,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:43","end":"05:43","startHours":28.712487273662532,"endHours":29.712487273662532,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:43","end":"06:43","startHours":29.712487273662532,"endHours":30.712487273662532,"planetary_lord":"Mercury"}],"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":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-15.51996217916896,"eotMinutes":-14.37765250936663,"ayanamsa":23.6728}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Navamī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","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 February 7, 1987 CE · Erode, Tamil Nadu · Vidhyamitra","description":"February 7, 1987 CE for Erode, Tamil Nadu: Śukla Navamī, sūryodaya 06:43, sūryāsta 18:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1987-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1987-02-07","sa":"https://sa.vidhyamitra.com/city/erode/1987-02-07","hi":"https://hi.vidhyamitra.com/city/erode/1987-02-07","x-default":"https://vidhyamitra.com/city/erode/1987-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T23:20:21.743Z","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":"2026-05-22T23:20:21.743Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T23:20:21.743Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}