{"id":"vidhyamitra:city-day:erode:2021-02-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2021-02-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-02-21","date_display":"February 21, 2021 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":2021,"month":2,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459266.770833,"kali_year":5122,"ahargana":1870801.2708,"sun":{"sidereal_longitude":308.5549,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":53.375,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":104.82,"elapsed_within_tithi_degrees":8.82},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":53.375,"elapsed_within_degrees":0.0416},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.9299},"karana":{"half_tithi_index":17,"name":"Kaulava"},"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":2021,"month":2,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459266.770833,"ahargana":1870801.2708,"kali_year":5122,"ayanamsa_lahiri":24.1483,"grahas":{"sun":{"sidereal_longitude":308.47828200000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":52.160281999999995,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false,"latitude":-0.2016},"mars":{"sidereal_longitude":29.229282000000012,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":286.556282,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":290.627082,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"venus":{"sidereal_longitude":299.9617820000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":283.4563820000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":55.9457,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":235.9457,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":2021,"month":2,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459266.770833,"kali_year":5122,"ahargana":1870801.2708,"sun":{"sidereal_longitude":308.5549,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":53.375,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":104.82,"elapsed_within_tithi_degrees":8.82},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":53.375,"elapsed_within_degrees":0.0416},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.9299},"karana":{"half_tithi_index":17,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.202,"elongation":104.82},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.202,"opposition_distance":75.18}},"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":"06:38","sunsetLocal":"18:28","solarNoonLocal":"12:33","dayLengthHours":11.83020082043302,"dayLengthDisplay":"11 Hours 49 Mins 49 Secs","nightLengthDisplay":"12 Hours 10 Mins 11 Secs","moonriseLocal":"13:06","moonsetLocal":"01:50","rahuKala":{"name":"Rāhu Kāla","start":"17:00","end":"18:28","startHours":16.991676013349654,"endHours":18.47045111590378,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:33","end":"14:02","startHours":12.555350705687271,"endHours":14.034125808241399,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:31","end":"17:00","startHours":15.512900910795526,"endHours":16.991676013349654,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:48","startHours":9.400630486905133,"endHours":9.7949705142529,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:27","startHours":7.1331753296554705,"endHours":7.448647351533684,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:57","startHours":12.161010678339503,"endHours":12.94969073303504,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:04","end":"05:51","startHours":5.062890186079692,"endHours":5.851570240775227,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:39","end":"06:38","startHours":5.654400227101343,"endHours":6.640250295470762,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:19","startHours":14.527050842426108,"endHours":15.315730897121643,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:16","end":"18:40","startHours":18.270451115903782,"endHours":18.67045111590378,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:28","end":"18:58","startHours":18.47045111590378,"endHours":18.96337615008849,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:13","end":"19:58","startHours":18.22045111590378,"endHours":19.97045111590378,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:57","startHours":24.161010678339505,"endHours":24.949690733035037,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:38","end":"08:07","startHours":6.640250295470762,"endHours":8.119025398024888,"quality":"inauspicious"},{"name":"Chala","start":"08:07","end":"09:36","startHours":8.119025398024888,"endHours":9.597800500579016,"quality":"neutral"},{"name":"Labha","start":"09:36","end":"11:05","startHours":9.597800500579016,"endHours":11.076575603133143,"quality":"auspicious"},{"name":"Amṛta","start":"11:05","end":"12:33","startHours":11.076575603133143,"endHours":12.555350705687271,"quality":"auspicious"},{"name":"Kāla","start":"12:33","end":"14:02","startHours":12.555350705687271,"endHours":14.034125808241399,"quality":"inauspicious"},{"name":"Śubha","start":"14:02","end":"15:31","startHours":14.034125808241399,"endHours":15.512900910795526,"quality":"auspicious"},{"name":"Roga","start":"15:31","end":"17:00","startHours":15.512900910795526,"endHours":16.991676013349654,"quality":"inauspicious"},{"name":"Udveg","start":"17:00","end":"18:28","startHours":16.991676013349654,"endHours":18.47045111590378,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:28","end":"20:00","startHours":18.47045111590378,"endHours":19.991676013349654,"quality":"auspicious"},{"name":"Roga","start":"20:00","end":"21:31","startHours":19.991676013349654,"endHours":21.512900910795526,"quality":"inauspicious"},{"name":"Udveg","start":"21:31","end":"23:02","startHours":21.512900910795526,"endHours":23.0341258082414,"quality":"inauspicious"},{"name":"Chala","start":"23:02","end":"00:33","startHours":23.0341258082414,"endHours":24.55535070568727,"quality":"neutral"},{"name":"Labha","start":"00:33","end":"02:05","startHours":24.55535070568727,"endHours":26.076575603133143,"quality":"auspicious"},{"name":"Amṛta","start":"02:05","end":"03:36","startHours":26.076575603133143,"endHours":27.597800500579016,"quality":"auspicious"},{"name":"Kāla","start":"03:36","end":"05:07","startHours":27.597800500579016,"endHours":29.11902539802489,"quality":"inauspicious"},{"name":"Śubha","start":"05:07","end":"06:38","startHours":29.11902539802489,"endHours":30.64025029547076,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:38","end":"07:38","startHours":6.640250295470762,"endHours":7.640250295470762,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:38","end":"08:38","startHours":7.640250295470762,"endHours":8.64025029547076,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:38","end":"09:38","startHours":8.64025029547076,"endHours":9.64025029547076,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:38","end":"10:38","startHours":9.64025029547076,"endHours":10.64025029547076,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:38","end":"11:38","startHours":10.64025029547076,"endHours":11.64025029547076,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:38","end":"12:38","startHours":11.64025029547076,"endHours":12.64025029547076,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:38","end":"13:38","startHours":12.64025029547076,"endHours":13.64025029547076,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:38","end":"14:38","startHours":13.64025029547076,"endHours":14.64025029547076,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:38","end":"15:38","startHours":14.64025029547076,"endHours":15.64025029547076,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:38","end":"16:38","startHours":15.64025029547076,"endHours":16.64025029547076,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:38","end":"17:38","startHours":16.64025029547076,"endHours":17.64025029547076,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:38","end":"18:38","startHours":17.64025029547076,"endHours":18.64025029547076,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:38","end":"19:38","startHours":18.64025029547076,"endHours":19.64025029547076,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:38","end":"20:38","startHours":19.64025029547076,"endHours":20.64025029547076,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:38","end":"21:38","startHours":20.64025029547076,"endHours":21.64025029547076,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:38","end":"22:38","startHours":21.64025029547076,"endHours":22.64025029547076,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:38","end":"23:38","startHours":22.64025029547076,"endHours":23.64025029547076,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:38","end":"00:38","startHours":23.64025029547076,"endHours":24.64025029547076,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:38","end":"01:38","startHours":24.64025029547076,"endHours":25.64025029547076,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:38","end":"02:38","startHours":25.64025029547076,"endHours":26.64025029547076,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:38","end":"03:38","startHours":26.64025029547076,"endHours":27.64025029547076,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:38","end":"04:38","startHours":27.64025029547076,"endHours":28.64025029547076,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:38","end":"05:38","startHours":28.64025029547076,"endHours":29.64025029547076,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:38","end":"06:38","startHours":29.64025029547076,"endHours":30.64025029547076,"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.537122566800303,"eotMinutes":-14.189842341236304,"ayanamsa":24.1483}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Navamī · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5}],"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":"-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 21, 2021 CE · Erode, Tamil Nadu · Vidhyamitra","description":"February 21, 2021 CE for Erode, Tamil Nadu: Śukla Navamī, sūryodaya 06:38, sūryāsta 18:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2021-02-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2021-02-21","sa":"https://sa.vidhyamitra.com/city/erode/2021-02-21","hi":"https://hi.vidhyamitra.com/city/erode/2021-02-21","x-default":"https://vidhyamitra.com/city/erode/2021-02-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T06:24:53.770Z","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":"2026-05-15T06:24:53.770Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T06:24:53.770Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}