{"id":"vidhyamitra:city-day:vrindavan:2091-08-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2091-08-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2091-08-18","date_display":"August 18, 2091 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":2091,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2485011.770833,"kali_year":5193,"ahargana":1896546.2708,"sun":{"sidereal_longitude":119.4398,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":157.912,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.4722,"elapsed_within_tithi_degrees":2.4722},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.912,"elapsed_within_degrees":11.2453},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.3517},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":2091,"month":8,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2485011.770833,"ahargana":1896546.2708,"kali_year":5193,"ayanamsa_lahiri":25.133,"grahas":{"sun":{"sidereal_longitude":120.284134,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":160.71473400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false,"latitude":1.9753},"mars":{"sidereal_longitude":181.14513399999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":100.43343400000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":257.250234,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":125.62213400000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":70.24613399999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":131.8518,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":311.8518,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":2091,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2485011.770833,"kali_year":5193,"ahargana":1896546.2708,"sun":{"sidereal_longitude":119.4398,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":157.912,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.4722,"elapsed_within_tithi_degrees":2.4722},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.912,"elapsed_within_degrees":11.2453},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.3517},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.975,"elongation":38.472},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.975,"opposition_distance":141.528}},"eclipse_window_40days":[{"offset_days":-3,"type":"solar","occurs":true,"moon_latitude":-1.268,"elongation":0.94},{"offset_days":11,"type":"lunar","occurs":true,"moon_latitude":-0.052,"opposition_distance":1.943}]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"05:51","sunsetLocal":"18:55","solarNoonLocal":"12:23","dayLengthHours":13.05608867510189,"dayLengthDisplay":"13 Hours 03 Mins 22 Secs","nightLengthDisplay":"10 Hours 56 Mins 38 Secs","moonriseLocal":"09:07","moonsetLocal":"21:02","rahuKala":{"name":"Rāhu Kāla","start":"09:07","end":"10:45","startHours":9.117492126573033,"endHours":10.749503210960771,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:01","end":"15:39","startHours":14.013525379736244,"endHours":15.645536464123978,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:51","end":"07:29","startHours":5.853469957797562,"endHours":7.485481042185298,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:20","startHours":8.899890648654669,"endHours":9.3350936044914,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:45","startHours":6.397473652593474,"endHours":6.745636017262858,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:49","startHours":11.946311339511777,"endHours":12.816717251185235,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:07","end":"04:59","startHours":4.112658134450643,"endHours":4.9830640461241025,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:46","end":"05:51","startHours":4.765462568205738,"endHours":5.853469957797562,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:26","startHours":14.557529074532155,"endHours":15.427934986205615,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:43","end":"19:07","startHours":18.70955863289945,"endHours":19.10955863289945,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:55","end":"19:27","startHours":18.90955863289945,"endHours":19.453562327695362,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:40","end":"20:25","startHours":18.65955863289945,"endHours":20.40955863289945,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:49","startHours":23.946311339511777,"endHours":24.816717251185235,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:51","end":"07:29","startHours":5.853469957797562,"endHours":7.485481042185298,"quality":"inauspicious"},{"name":"Śubha","start":"07:29","end":"09:07","startHours":7.485481042185298,"endHours":9.117492126573033,"quality":"auspicious"},{"name":"Roga","start":"09:07","end":"10:45","startHours":9.117492126573033,"endHours":10.749503210960771,"quality":"inauspicious"},{"name":"Udveg","start":"10:45","end":"12:23","startHours":10.749503210960771,"endHours":12.381514295348506,"quality":"inauspicious"},{"name":"Chala","start":"12:23","end":"14:01","startHours":12.381514295348506,"endHours":14.013525379736244,"quality":"neutral"},{"name":"Labha","start":"14:01","end":"15:39","startHours":14.013525379736244,"endHours":15.645536464123978,"quality":"auspicious"},{"name":"Amṛta","start":"15:39","end":"17:17","startHours":15.645536464123978,"endHours":17.277547548511716,"quality":"auspicious"},{"name":"Kāla","start":"17:17","end":"18:55","startHours":17.277547548511716,"endHours":18.90955863289945,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:55","end":"20:17","startHours":18.90955863289945,"endHours":20.277547548511713,"quality":"auspicious"},{"name":"Amṛta","start":"20:17","end":"21:39","startHours":20.277547548511713,"endHours":21.64553646412398,"quality":"auspicious"},{"name":"Kāla","start":"21:39","end":"23:01","startHours":21.64553646412398,"endHours":23.013525379736244,"quality":"inauspicious"},{"name":"Śubha","start":"23:01","end":"00:23","startHours":23.013525379736244,"endHours":24.381514295348506,"quality":"auspicious"},{"name":"Roga","start":"00:23","end":"01:45","startHours":24.381514295348506,"endHours":25.749503210960768,"quality":"inauspicious"},{"name":"Udveg","start":"01:45","end":"03:07","startHours":25.749503210960768,"endHours":27.117492126573033,"quality":"inauspicious"},{"name":"Chala","start":"03:07","end":"04:29","startHours":27.117492126573033,"endHours":28.4854810421853,"quality":"neutral"},{"name":"Labha","start":"04:29","end":"05:51","startHours":28.4854810421853,"endHours":29.85346995779756,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.853469957797562,"endHours":6.853469957797562,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.853469957797562,"endHours":7.853469957797562,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.853469957797562,"endHours":8.85346995779756,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.85346995779756,"endHours":9.85346995779756,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.85346995779756,"endHours":10.85346995779756,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.85346995779756,"endHours":11.85346995779756,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.85346995779756,"endHours":12.85346995779756,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.85346995779756,"endHours":13.85346995779756,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.85346995779756,"endHours":14.85346995779756,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.85346995779756,"endHours":15.85346995779756,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.85346995779756,"endHours":16.85346995779756,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.85346995779756,"endHours":17.85346995779756,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.85346995779756,"endHours":18.85346995779756,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.85346995779756,"endHours":19.85346995779756,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.85346995779756,"endHours":20.85346995779756,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.85346995779756,"endHours":21.85346995779756,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.85346995779756,"endHours":22.85346995779756,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.85346995779756,"endHours":23.85346995779756,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.85346995779756,"endHours":24.85346995779756,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.85346995779756,"endHours":25.85346995779756,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.85346995779756,"endHours":26.85346995779756,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.85346995779756,"endHours":27.85346995779756,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.85346995779756,"endHours":28.85346995779756,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.85346995779756,"endHours":29.85346995779756,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.047101016308448,"eotMinutes":-3.5280577209103767,"ayanamsa":25.133}},"calendars":{"vikram_samvat":2148,"vikram_samvatsara":"Raktākṣī","saka_samvat":2013,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1498,"malayalam_era":1267,"nanakshahi_year":622,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Caturthī · Vikram 2148 Raktākṣī · Śaka 2013 Virodhakṛt"},"festivals":[{"id":"ganesha-chaturthi","name":"Gaṇeśa Caturthī","name_sanskrit":"गणेश चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Gaṇeśa's birth day; 11-day festival in Maharashtra.","vrata":false,"detection":{"tithi_number":4,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":1},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 18, 2091 CE · Vṛndāvana · Vidhyamitra","description":"August 18, 2091 CE for Vṛndāvana: Śukla Caturthī, sūryodaya 05:51, sūryāsta 18:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2091-08-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2091-08-18","sa":"https://sa.vidhyamitra.com/city/vrindavan/2091-08-18","hi":"https://hi.vidhyamitra.com/city/vrindavan/2091-08-18","x-default":"https://vidhyamitra.com/city/vrindavan/2091-08-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T15:47:05.895Z","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":"2026-05-20T15:47:05.895Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T15:47:05.895Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}