{"id":"vidhyamitra:city-day:ayodhya:2170-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2170-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2170-12-13","date_display":"December 13, 2170 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":2170,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513982.770833,"kali_year":5272,"ahargana":1925517.2708,"sun":{"sidereal_longitude":234.0079,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":298.6748,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.6669,"elapsed_within_tithi_degrees":4.6669},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.6748,"elapsed_within_degrees":5.3415},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.6827},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2170,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2513982.770833,"ahargana":1925517.2708,"kali_year":5272,"ayanamsa_lahiri":26.241,"grahas":{"sun":{"sidereal_longitude":234.83922800000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":299.63582799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false,"latitude":-4.4544},"mars":{"sidereal_longitude":263.022328,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":214.213028,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.627928,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":186.95202800000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":303.1534280000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":36.8288,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":216.8288,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"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":2170,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513982.770833,"kali_year":5272,"ahargana":1925517.2708,"sun":{"sidereal_longitude":234.0079,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":298.6748,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.6669,"elapsed_within_tithi_degrees":4.6669},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.6748,"elapsed_within_degrees":5.3415},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.6827},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.454,"elongation":64.667},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.454,"opposition_distance":115.333}},"eclipse_window_40days":[]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:42","sunsetLocal":"17:10","solarNoonLocal":"11:56","dayLengthHours":10.476412704198735,"dayLengthDisplay":"10 Hours 28 Mins 35 Secs","nightLengthDisplay":"13 Hours 31 Mins 25 Secs","moonriseLocal":"10:39","moonsetLocal":"21:51","rahuKala":{"name":"Rāhu Kāla","start":"13:15","end":"14:33","startHours":13.24444075053454,"endHours":14.553992338559382,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:42","end":"08:00","startHours":6.696682810410332,"endHours":8.006234398435174,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:19","end":"10:38","startHours":9.315785986460016,"endHours":10.625337574484856,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:08","end":"09:29","startHours":9.141179108056704,"endHours":9.490392864863328,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:25","startHours":7.133200006418613,"endHours":7.412571011863912,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:17","startHours":11.585675405703073,"endHours":12.284102919316323,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:18","end":"06:00","startHours":5.299827783183834,"endHours":5.998255296797083,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:49","end":"06:42","startHours":5.823648418393771,"endHours":6.696682810410332,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:41","end":"14:23","startHours":13.680957946542822,"endHours":14.37938546015607,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:58","end":"17:22","startHours":16.973095514609067,"endHours":17.373095514609066,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:10","end":"17:37","startHours":17.173095514609066,"endHours":17.60961271061735,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:55","end":"18:40","startHours":16.923095514609066,"endHours":18.673095514609066,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:17","startHours":23.585675405703075,"endHours":24.28410291931632,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:42","end":"08:00","startHours":6.696682810410332,"endHours":8.006234398435174,"quality":"auspicious"},{"name":"Roga","start":"08:00","end":"09:19","startHours":8.006234398435174,"endHours":9.315785986460016,"quality":"inauspicious"},{"name":"Udveg","start":"09:19","end":"10:38","startHours":9.315785986460016,"endHours":10.625337574484856,"quality":"inauspicious"},{"name":"Chala","start":"10:38","end":"11:56","startHours":10.625337574484856,"endHours":11.934889162509698,"quality":"neutral"},{"name":"Labha","start":"11:56","end":"13:15","startHours":11.934889162509698,"endHours":13.24444075053454,"quality":"auspicious"},{"name":"Amṛta","start":"13:15","end":"14:33","startHours":13.24444075053454,"endHours":14.553992338559382,"quality":"auspicious"},{"name":"Kāla","start":"14:33","end":"15:52","startHours":14.553992338559382,"endHours":15.863543926584224,"quality":"inauspicious"},{"name":"Śubha","start":"15:52","end":"17:10","startHours":15.863543926584224,"endHours":17.173095514609066,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:10","end":"18:52","startHours":17.173095514609066,"endHours":18.863543926584224,"quality":"auspicious"},{"name":"Kāla","start":"18:52","end":"20:33","startHours":18.863543926584224,"endHours":20.553992338559382,"quality":"inauspicious"},{"name":"Śubha","start":"20:33","end":"22:15","startHours":20.553992338559382,"endHours":22.24444075053454,"quality":"auspicious"},{"name":"Roga","start":"22:15","end":"23:56","startHours":22.24444075053454,"endHours":23.9348891625097,"quality":"inauspicious"},{"name":"Udveg","start":"23:56","end":"01:38","startHours":23.9348891625097,"endHours":25.62533757448486,"quality":"inauspicious"},{"name":"Chala","start":"01:38","end":"03:19","startHours":25.62533757448486,"endHours":27.315785986460014,"quality":"neutral"},{"name":"Labha","start":"03:19","end":"05:00","startHours":27.315785986460014,"endHours":29.006234398435176,"quality":"auspicious"},{"name":"Amṛta","start":"05:00","end":"06:42","startHours":29.006234398435176,"endHours":30.69668281041033,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.696682810410332,"endHours":7.696682810410332,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.696682810410332,"endHours":8.696682810410332,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.696682810410332,"endHours":9.696682810410332,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.696682810410332,"endHours":10.696682810410332,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.696682810410332,"endHours":11.696682810410332,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.696682810410332,"endHours":12.696682810410332,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.696682810410332,"endHours":13.696682810410332,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.696682810410332,"endHours":14.696682810410332,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.696682810410332,"endHours":15.696682810410332,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.696682810410332,"endHours":16.69668281041033,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.69668281041033,"endHours":17.69668281041033,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.69668281041033,"endHours":18.69668281041033,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.69668281041033,"endHours":19.69668281041033,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.69668281041033,"endHours":20.69668281041033,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.69668281041033,"endHours":21.69668281041033,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.69668281041033,"endHours":22.69668281041033,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.69668281041033,"endHours":23.69668281041033,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.69668281041033,"endHours":24.69668281041033,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.69668281041033,"endHours":25.69668281041033,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.69668281041033,"endHours":26.69668281041033,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.69668281041033,"endHours":27.69668281041033,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.69668281041033,"endHours":28.69668281041033,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.69668281041033,"endHours":29.69668281041033,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.69668281041033,"endHours":30.69668281041033,"planetary_lord":"Moon"}],"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":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.13646550819193,"eotMinutes":5.090650249418121,"ayanamsa":26.241}},"calendars":{"vikram_samvat":2227,"vikram_samvatsara":"Subhānu","saka_samvat":2092,"saka_samvatsara":"Pramoda","bengali_samvat":1577,"malayalam_era":1346,"nanakshahi_year":701,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Ṣaṣṭhī · Vikram 2227 Subhānu · Śaka 2092 Pramoda"},"festivals":[{"id":"skanda-shashthi","name":"Skanda Ṣaṣṭhī","name_sanskrit":"स्कन्द षष्ठी","tradition":"Shaiva","associated_deity":"Kārttikeya / Skanda / Murugan","significance":"Kārttikeya's victory over Tāraka. Important Shaiva day in Tamil tradition.","vrata":true,"detection":{"tithi_number":6,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":3},{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"precedence":5}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"ayodhya"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 13, 2170 CE · Ayodhyā · Vidhyamitra","description":"December 13, 2170 CE for Ayodhyā: Śukla Ṣaṣṭhī, sūryodaya 06:42, sūryāsta 17:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2170-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2170-12-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/2170-12-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/2170-12-13","x-default":"https://vidhyamitra.com/city/ayodhya/2170-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T13:14:46.997Z","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":"2026-05-20T13:14:46.997Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T13:14:46.997Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}