{"id":"vidhyamitra:city-day:erode:2166-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2166-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2166-05-13","date_display":"May 13, 2166 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":2166,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2512307.770833,"kali_year":5268,"ahargana":1923842.2708,"sun":{"sidereal_longitude":25.8937,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":181.1032,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2094,"elapsed_within_tithi_degrees":11.2094},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":181.1032,"elapsed_within_degrees":7.7698},"yoga":{"number":16,"name":"Siddhi","sum_longitude":206.9969},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2166,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2512307.770833,"ahargana":1923842.2708,"kali_year":5268,"ayanamsa_lahiri":26.1769,"grahas":{"sun":{"sidereal_longitude":26.275825999999995,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":182.16922599999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false,"latitude":3.7084},"mars":{"sidereal_longitude":95.65342599999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":45.44492600000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":20.845226000000025,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":352.150526,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":261.633026,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":125.5783,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.5783,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2166,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2512307.770833,"kali_year":5268,"ahargana":1923842.2708,"sun":{"sidereal_longitude":25.8937,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":181.1032,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2094,"elapsed_within_tithi_degrees":11.2094},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":181.1032,"elapsed_within_degrees":7.7698},"yoga":{"number":16,"name":"Siddhi","sum_longitude":206.9969},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.708,"elongation":155.209},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.708,"opposition_distance":24.791}},"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":"05:57","sunsetLocal":"18:34","solarNoonLocal":"12:15","dayLengthHours":12.62922004017183,"dayLengthDisplay":"12 Hours 37 Mins 45 Secs","nightLengthDisplay":"11 Hours 22 Mins 15 Secs","moonriseLocal":"16:45","moonsetLocal":"04:33","rahuKala":{"name":"Rāhu Kāla","start":"15:25","end":"17:00","startHours":15.413601030983685,"endHours":16.992253536005162,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:06","end":"10:41","startHours":9.09899101089777,"endHours":10.677643515919247,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:15","end":"13:50","startHours":12.256296020940727,"endHours":13.834948525962204,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:19","startHours":8.888504010228239,"endHours":9.309478011567299,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:48","startHours":6.467903502528637,"endHours":6.804682703599886,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:41","startHours":11.835322019601666,"endHours":12.677270022279789,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:06","startHours":4.257789995498567,"endHours":5.099737998176689,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:53","end":"05:57","startHours":4.889250997507158,"endHours":5.941686000854811,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:12","startHours":14.361166027636031,"endHours":15.203114030314152,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:22","end":"18:46","startHours":18.370906041026643,"endHours":18.77090604102664,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:34","end":"19:06","startHours":18.570906041026642,"endHours":19.09712354270047,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:19","end":"20:04","startHours":18.320906041026642,"endHours":20.070906041026642,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:41","startHours":23.835322019601666,"endHours":24.67727002227979,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:57","end":"07:31","startHours":5.941686000854811,"endHours":7.52033850587629,"quality":"inauspicious"},{"name":"Udveg","start":"07:31","end":"09:06","startHours":7.52033850587629,"endHours":9.09899101089777,"quality":"inauspicious"},{"name":"Chala","start":"09:06","end":"10:41","startHours":9.09899101089777,"endHours":10.677643515919247,"quality":"neutral"},{"name":"Labha","start":"10:41","end":"12:15","startHours":10.677643515919247,"endHours":12.256296020940727,"quality":"auspicious"},{"name":"Amṛta","start":"12:15","end":"13:50","startHours":12.256296020940727,"endHours":13.834948525962204,"quality":"auspicious"},{"name":"Kāla","start":"13:50","end":"15:25","startHours":13.834948525962204,"endHours":15.413601030983685,"quality":"inauspicious"},{"name":"Śubha","start":"15:25","end":"17:00","startHours":15.413601030983685,"endHours":16.992253536005162,"quality":"auspicious"},{"name":"Roga","start":"17:00","end":"18:34","startHours":16.992253536005162,"endHours":18.570906041026642,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:34","end":"20:00","startHours":18.570906041026642,"endHours":19.992253536005165,"quality":"inauspicious"},{"name":"Śubha","start":"20:00","end":"21:25","startHours":19.992253536005165,"endHours":21.413601030983685,"quality":"auspicious"},{"name":"Roga","start":"21:25","end":"22:50","startHours":21.413601030983685,"endHours":22.834948525962204,"quality":"inauspicious"},{"name":"Udveg","start":"22:50","end":"00:15","startHours":22.834948525962204,"endHours":24.256296020940727,"quality":"inauspicious"},{"name":"Chala","start":"00:15","end":"01:41","startHours":24.256296020940727,"endHours":25.67764351591925,"quality":"neutral"},{"name":"Labha","start":"01:41","end":"03:06","startHours":25.67764351591925,"endHours":27.09899101089777,"quality":"auspicious"},{"name":"Amṛta","start":"03:06","end":"04:31","startHours":27.09899101089777,"endHours":28.52033850587629,"quality":"auspicious"},{"name":"Kāla","start":"04:31","end":"05:57","startHours":28.52033850587629,"endHours":29.941686000854812,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.941686000854811,"endHours":6.941686000854811,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.941686000854811,"endHours":7.941686000854811,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.941686000854811,"endHours":8.941686000854812,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.941686000854812,"endHours":9.941686000854812,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.941686000854812,"endHours":10.941686000854812,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.941686000854812,"endHours":11.941686000854812,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.941686000854812,"endHours":12.941686000854812,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.941686000854812,"endHours":13.941686000854812,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.941686000854812,"endHours":14.941686000854812,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.941686000854812,"endHours":15.941686000854812,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.941686000854812,"endHours":16.941686000854812,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.941686000854812,"endHours":17.941686000854812,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.941686000854812,"endHours":18.941686000854812,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.941686000854812,"endHours":19.941686000854812,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.941686000854812,"endHours":20.941686000854812,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.941686000854812,"endHours":21.941686000854812,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.941686000854812,"endHours":22.941686000854812,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.941686000854812,"endHours":23.941686000854812,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.941686000854812,"endHours":24.941686000854812,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.941686000854812,"endHours":25.941686000854812,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.941686000854812,"endHours":26.941686000854812,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.941686000854812,"endHours":27.941686000854812,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.941686000854812,"endHours":28.941686000854812,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.941686000854812,"endHours":29.941686000854812,"planetary_lord":"Saturn"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.381491180285764,"eotMinutes":3.7534387435564067,"ayanamsa":26.1769}},"calendars":{"vikram_samvat":2223,"vikram_samvatsara":"Pramāthi","saka_samvat":2088,"saka_samvatsara":"Akṣaya","bengali_samvat":1573,"malayalam_era":1342,"nanakshahi_year":697,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Trayodaśī · Vikram 2223 Pramāthi · Śaka 2088 Akṣaya"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 May 13, 2166 CE · Erode, Tamil Nadu · Vidhyamitra","description":"May 13, 2166 CE for Erode, Tamil Nadu: Śukla Trayodaśī, sūryodaya 05:57, sūryāsta 18:34.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2166-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2166-05-13","sa":"https://sa.vidhyamitra.com/city/erode/2166-05-13","hi":"https://hi.vidhyamitra.com/city/erode/2166-05-13","x-default":"https://vidhyamitra.com/city/erode/2166-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T01:33:09.780Z","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":"2026-05-31T01:33:09.780Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T01:33:09.780Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}