{"id":"vidhyamitra:city-day:erode:1990-01-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1990-01-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-01-27","date_display":"January 27, 1990 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":1990,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447918.770833,"kali_year":5091,"ahargana":1859453.2708,"sun":{"sidereal_longitude":283.1233,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":284.9429,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":1.8195,"elapsed_within_tithi_degrees":1.8195},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.9429,"elapsed_within_degrees":4.9429},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.0662},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":1990,"month":1,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447918.770833,"ahargana":1859453.2708,"kali_year":5091,"ayanamsa_lahiri":23.7143,"grahas":{"sun":{"sidereal_longitude":283.118059,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":286.006359,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":-0.9557},"mars":{"sidereal_longitude":244.59175900000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":258.72655899999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":68.60165900000004,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":270.26005899999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":264.71305900000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":297.2174,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":117.2174,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"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":1990,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447918.770833,"kali_year":5091,"ahargana":1859453.2708,"sun":{"sidereal_longitude":283.1233,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":284.9429,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":1.8195,"elapsed_within_tithi_degrees":1.8195},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.9429,"elapsed_within_degrees":4.9429},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.0662},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":true,"moon_latitude":-0.956,"elongation":1.82},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.956,"opposition_distance":178.18}},"eclipse_window_40days":[{"offset_days":0,"type":"solar","occurs":true,"moon_latitude":-0.956,"elongation":1.82}]},"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":"06:44","sunsetLocal":"18:20","solarNoonLocal":"12:32","dayLengthHours":11.604783946448045,"dayLengthDisplay":"11 Hours 36 Mins 17 Secs","nightLengthDisplay":"12 Hours 23 Mins 43 Secs","moonriseLocal":"06:56","moonsetLocal":"18:31","rahuKala":{"name":"Rāhu Kāla","start":"09:38","end":"11:05","startHours":9.630404105169307,"endHours":11.081002098475313,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:59","end":"15:26","startHours":13.982198085087322,"endHours":15.432796078393329,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:44","end":"08:11","startHours":6.729208118557295,"endHours":8.1798061118633,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:49","startHours":9.436991039395172,"endHours":9.82381717094344,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:31","startHours":7.212740782992631,"endHours":7.522201688231245,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:55","startHours":12.14477396023305,"endHours":12.918426223329586,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:11","end":"05:57","startHours":5.181903592364223,"endHours":5.955555855460759,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:46","end":"06:44","startHours":5.762142789686625,"endHours":6.729208118557295,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:14","startHours":14.46573074952266,"endHours":15.239383012619196,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:08","end":"18:32","startHours":18.13399206500534,"endHours":18.53399206500534,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:20","end":"18:49","startHours":18.33399206500534,"endHours":18.817524729440674,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:05","end":"19:50","startHours":18.08399206500534,"endHours":19.83399206500534,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:55","startHours":24.14477396023305,"endHours":24.918426223329586,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:44","end":"08:11","startHours":6.729208118557295,"endHours":8.1798061118633,"quality":"inauspicious"},{"name":"Śubha","start":"08:11","end":"09:38","startHours":8.1798061118633,"endHours":9.630404105169307,"quality":"auspicious"},{"name":"Roga","start":"09:38","end":"11:05","startHours":9.630404105169307,"endHours":11.081002098475313,"quality":"inauspicious"},{"name":"Udveg","start":"11:05","end":"12:32","startHours":11.081002098475313,"endHours":12.531600091781318,"quality":"inauspicious"},{"name":"Chala","start":"12:32","end":"13:59","startHours":12.531600091781318,"endHours":13.982198085087322,"quality":"neutral"},{"name":"Labha","start":"13:59","end":"15:26","startHours":13.982198085087322,"endHours":15.432796078393329,"quality":"auspicious"},{"name":"Amṛta","start":"15:26","end":"16:53","startHours":15.432796078393329,"endHours":16.883394071699335,"quality":"auspicious"},{"name":"Kāla","start":"16:53","end":"18:20","startHours":16.883394071699335,"endHours":18.33399206500534,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:20","end":"19:53","startHours":18.33399206500534,"endHours":19.883394071699335,"quality":"auspicious"},{"name":"Amṛta","start":"19:53","end":"21:26","startHours":19.883394071699335,"endHours":21.43279607839333,"quality":"auspicious"},{"name":"Kāla","start":"21:26","end":"22:59","startHours":21.43279607839333,"endHours":22.982198085087322,"quality":"inauspicious"},{"name":"Śubha","start":"22:59","end":"00:32","startHours":22.982198085087322,"endHours":24.531600091781318,"quality":"auspicious"},{"name":"Roga","start":"00:32","end":"02:05","startHours":24.531600091781318,"endHours":26.081002098475313,"quality":"inauspicious"},{"name":"Udveg","start":"02:05","end":"03:38","startHours":26.081002098475313,"endHours":27.630404105169305,"quality":"inauspicious"},{"name":"Chala","start":"03:38","end":"05:11","startHours":27.630404105169305,"endHours":29.1798061118633,"quality":"neutral"},{"name":"Labha","start":"05:11","end":"06:44","startHours":29.1798061118633,"endHours":30.729208118557295,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:44","end":"07:44","startHours":6.729208118557295,"endHours":7.729208118557295,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:44","end":"08:44","startHours":7.729208118557295,"endHours":8.729208118557295,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:44","end":"09:44","startHours":8.729208118557295,"endHours":9.729208118557295,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:44","end":"10:44","startHours":9.729208118557295,"endHours":10.729208118557295,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:44","end":"11:44","startHours":10.729208118557295,"endHours":11.729208118557295,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:44","end":"12:44","startHours":11.729208118557295,"endHours":12.729208118557295,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:44","end":"13:44","startHours":12.729208118557295,"endHours":13.729208118557295,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:44","end":"14:44","startHours":13.729208118557295,"endHours":14.729208118557295,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:44","end":"15:44","startHours":14.729208118557295,"endHours":15.729208118557295,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:44","end":"16:44","startHours":15.729208118557295,"endHours":16.729208118557295,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:44","end":"17:44","startHours":16.729208118557295,"endHours":17.729208118557295,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:44","end":"18:44","startHours":17.729208118557295,"endHours":18.729208118557295,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:44","end":"19:44","startHours":18.729208118557295,"endHours":19.729208118557295,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:44","end":"20:44","startHours":19.729208118557295,"endHours":20.729208118557295,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:44","end":"21:44","startHours":20.729208118557295,"endHours":21.729208118557295,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:44","end":"22:44","startHours":21.729208118557295,"endHours":22.729208118557295,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:44","end":"23:44","startHours":22.729208118557295,"endHours":23.729208118557295,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:44","end":"00:44","startHours":23.729208118557295,"endHours":24.729208118557295,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:44","end":"01:44","startHours":24.729208118557295,"endHours":25.729208118557295,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:44","end":"02:44","startHours":25.729208118557295,"endHours":26.729208118557295,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:44","end":"03:44","startHours":26.729208118557295,"endHours":27.729208118557295,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:44","end":"04:44","startHours":27.729208118557295,"endHours":28.729208118557295,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:44","end":"05:44","startHours":28.729208118557295,"endHours":29.729208118557295,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:44","end":"06:44","startHours":29.729208118557295,"endHours":30.729208118557295,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"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":-18.562700825046104,"eotMinutes":-12.76480550687915,"ayanamsa":23.7143}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pratipada · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"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},{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"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":[]},"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 January 27, 1990 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 27, 1990 CE for Erode, Tamil Nadu: Śukla Pratipada, sūryodaya 06:44, sūryāsta 18:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1990-01-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1990-01-27","sa":"https://sa.vidhyamitra.com/city/erode/1990-01-27","hi":"https://hi.vidhyamitra.com/city/erode/1990-01-27","x-default":"https://vidhyamitra.com/city/erode/1990-01-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T04:27:50.702Z","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":"2026-05-18T04:27:50.702Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T04:27:50.702Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}