{"id":"vidhyamitra:city-day:erode:2101-03-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2101-03-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2101-03-13","date_display":"March 13, 2101 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":2101,"month":3,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488505.770833,"kali_year":5202,"ahargana":1900040.2708,"sun":{"sidereal_longitude":326.9613,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":113.3496,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.3883,"elapsed_within_tithi_degrees":2.3883},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":113.3496,"elapsed_within_degrees":6.6829},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.3108},"karana":{"half_tithi_index":24,"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":2101,"month":3,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488505.770833,"ahargana":1900040.2708,"kali_year":5202,"ayanamsa_lahiri":25.2666,"grahas":{"sun":{"sidereal_longitude":327.022337,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":113.74383699999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false,"latitude":1.0398},"mars":{"sidereal_longitude":279.333537,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":308.34373700000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":207.11343699999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":328.235737,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":191.64123700000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":306.7228,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":126.7228,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":2101,"month":3,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488505.770833,"kali_year":5202,"ahargana":1900040.2708,"sun":{"sidereal_longitude":326.9613,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":113.3496,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.3883,"elapsed_within_tithi_degrees":2.3883},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":113.3496,"elapsed_within_degrees":6.6829},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.3108},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.04,"elongation":146.388},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.04,"opposition_distance":33.612}},"eclipse_window_40days":[{"offset_days":-13,"type":"solar","occurs":true,"moon_latitude":0.593,"elongation":1.085}]},"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":"06:28","sunsetLocal":"18:30","solarNoonLocal":"12:29","dayLengthHours":12.031551250525832,"dayLengthDisplay":"12 Hours 01 Mins 54 Secs","nightLengthDisplay":"11 Hours 58 Mins 06 Secs","moonriseLocal":"16:01","moonsetLocal":"04:31","rahuKala":{"name":"Rāhu Kāla","start":"17:00","end":"18:30","startHours":17.000983717760665,"endHours":18.504927624076394,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:29","end":"14:00","startHours":12.48915199881348,"endHours":13.993095905129207,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:30","end":"17:00","startHours":15.497039811444937,"endHours":17.000983717760665,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:17","end":"09:41","startHours":9.28073833200659,"endHours":9.681790040357452,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:58","end":"07:18","startHours":6.974691008989139,"endHours":7.295532375669828,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:53","startHours":12.088100290462618,"endHours":12.890203707164341,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:52","end":"05:40","startHours":4.8691695401471184,"endHours":5.671272956848841,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:28","end":"06:28","startHours":5.4707471026734105,"endHours":6.473376373550563,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:18","startHours":14.494410540567785,"endHours":15.296513957269507,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.304927624076395,"endHours":18.704927624076394,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:00","startHours":18.504927624076394,"endHours":19.00624225951497,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.254927624076394,"endHours":20.004927624076394,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:53","startHours":24.08810029046262,"endHours":24.89020370716434,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:28","end":"07:59","startHours":6.473376373550563,"endHours":7.977320279866292,"quality":"inauspicious"},{"name":"Chala","start":"07:59","end":"09:29","startHours":7.977320279866292,"endHours":9.48126418618202,"quality":"neutral"},{"name":"Labha","start":"09:29","end":"10:59","startHours":9.48126418618202,"endHours":10.98520809249775,"quality":"auspicious"},{"name":"Amṛta","start":"10:59","end":"12:29","startHours":10.98520809249775,"endHours":12.48915199881348,"quality":"auspicious"},{"name":"Kāla","start":"12:29","end":"14:00","startHours":12.48915199881348,"endHours":13.993095905129207,"quality":"inauspicious"},{"name":"Śubha","start":"14:00","end":"15:30","startHours":13.993095905129207,"endHours":15.497039811444937,"quality":"auspicious"},{"name":"Roga","start":"15:30","end":"17:00","startHours":15.497039811444937,"endHours":17.000983717760665,"quality":"inauspicious"},{"name":"Udveg","start":"17:00","end":"18:30","startHours":17.000983717760665,"endHours":18.504927624076394,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:30","end":"20:00","startHours":18.504927624076394,"endHours":20.000983717760665,"quality":"auspicious"},{"name":"Roga","start":"20:00","end":"21:30","startHours":20.000983717760665,"endHours":21.497039811444935,"quality":"inauspicious"},{"name":"Udveg","start":"21:30","end":"23:00","startHours":21.497039811444935,"endHours":22.99309590512921,"quality":"inauspicious"},{"name":"Chala","start":"23:00","end":"00:29","startHours":22.99309590512921,"endHours":24.48915199881348,"quality":"neutral"},{"name":"Labha","start":"00:29","end":"01:59","startHours":24.48915199881348,"endHours":25.98520809249775,"quality":"auspicious"},{"name":"Amṛta","start":"01:59","end":"03:29","startHours":25.98520809249775,"endHours":27.48126418618202,"quality":"auspicious"},{"name":"Kāla","start":"03:29","end":"04:59","startHours":27.48126418618202,"endHours":28.97732027986629,"quality":"inauspicious"},{"name":"Śubha","start":"04:59","end":"06:28","startHours":28.97732027986629,"endHours":30.473376373550565,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:28","end":"07:28","startHours":6.473376373550563,"endHours":7.473376373550563,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:28","end":"08:28","startHours":7.473376373550563,"endHours":8.473376373550563,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:28","end":"09:28","startHours":8.473376373550563,"endHours":9.473376373550563,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:28","end":"10:28","startHours":9.473376373550563,"endHours":10.473376373550563,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:28","end":"11:28","startHours":10.473376373550563,"endHours":11.473376373550563,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:28","end":"12:28","startHours":11.473376373550563,"endHours":12.473376373550563,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:28","end":"13:28","startHours":12.473376373550563,"endHours":13.473376373550563,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:28","end":"14:28","startHours":13.473376373550563,"endHours":14.473376373550563,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:28","end":"15:28","startHours":14.473376373550563,"endHours":15.473376373550563,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:28","end":"16:28","startHours":15.473376373550563,"endHours":16.473376373550565,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:28","end":"17:28","startHours":16.473376373550565,"endHours":17.473376373550565,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:28","end":"18:28","startHours":17.473376373550565,"endHours":18.473376373550565,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:28","end":"19:28","startHours":18.473376373550565,"endHours":19.473376373550565,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:28","end":"20:28","startHours":19.473376373550565,"endHours":20.473376373550565,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:28","end":"21:28","startHours":20.473376373550565,"endHours":21.473376373550565,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:28","end":"22:28","startHours":21.473376373550565,"endHours":22.473376373550565,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:28","end":"23:28","startHours":22.473376373550565,"endHours":23.473376373550565,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:28","end":"00:28","startHours":23.473376373550565,"endHours":24.473376373550565,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:28","end":"01:28","startHours":24.473376373550565,"endHours":25.473376373550565,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:28","end":"02:28","startHours":25.473376373550565,"endHours":26.473376373550565,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:28","end":"03:28","startHours":26.473376373550565,"endHours":27.473376373550565,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:28","end":"04:28","startHours":27.473376373550565,"endHours":28.473376373550565,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:28","end":"05:28","startHours":28.473376373550565,"endHours":29.473376373550565,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:28","end":"06:28","startHours":29.473376373550565,"endHours":30.473376373550565,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"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":-3.0591432702004573,"eotMinutes":-10.217919928808794,"ayanamsa":25.2666}},"calendars":{"vikram_samvat":2158,"vikram_samvatsara":"Bhāva","saka_samvat":2023,"saka_samvatsara":"Durmati","bengali_samvat":1508,"malayalam_era":1277,"nanakshahi_year":632,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Trayodaśī · Vikram 2158 Bhāva · Śaka 2023 Durmati"},"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},{"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":"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 March 13, 2101 CE · Erode, Tamil Nadu · Vidhyamitra","description":"March 13, 2101 CE for Erode, Tamil Nadu: Śukla Trayodaśī, sūryodaya 06:28, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2101-03-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2101-03-13","sa":"https://sa.vidhyamitra.com/city/erode/2101-03-13","hi":"https://hi.vidhyamitra.com/city/erode/2101-03-13","x-default":"https://vidhyamitra.com/city/erode/2101-03-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T00:53:11.750Z","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":"2026-05-21T00:53:11.750Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T00:53:11.750Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}