{"id":"vidhyamitra:city-day:ujjain:2181-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ujjain/2181-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2181-02-01","date_display":"February 1, 2181 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":2181,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517685.770833,"kali_year":5282,"ahargana":1929220.2708,"sun":{"sidereal_longitude":285.7605,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":120.6317,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":194.8712,"elapsed_within_tithi_degrees":2.8712},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":120.6317,"elapsed_within_degrees":0.6317},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.3923},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":2181,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517685.770833,"ahargana":1929220.2708,"kali_year":5282,"ayanamsa_lahiri":26.3826,"grahas":{"sun":{"sidereal_longitude":286.18184700000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":120.98544700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false,"latitude":-4.4314},"mars":{"sidereal_longitude":46.73014699999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":259.2469470000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":109.51514700000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":282.707047,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":76.81044700000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":200.626,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":20.626,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":2181,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517685.770833,"kali_year":5282,"ahargana":1929220.2708,"sun":{"sidereal_longitude":285.7605,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":120.6317,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":194.8712,"elapsed_within_tithi_degrees":2.8712},"nakshatra":{"number":10,"name":"Maghā","pada":1,"moon_longitude":120.6317,"elapsed_within_degrees":0.6317},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.3923},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.431,"elongation":165.129},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.431,"opposition_distance":14.871}},"eclipse_window_40days":[]},"city":{"slug":"ujjain","name":"Ujjain","lat":23.1765,"lon":75.7885,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ujjain","name":"Ujjain","lat":23.1765,"lon":75.7885,"tz_offset_hours":5.5,"state":"Madhya Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:07","sunsetLocal":"18:14","solarNoonLocal":"12:41","dayLengthHours":11.122403124675461,"dayLengthDisplay":"11 Hours 07 Mins 21 Secs","nightLengthDisplay":"12 Hours 52 Mins 39 Secs","moonriseLocal":"19:16","moonsetLocal":"08:04","rahuKala":{"name":"Rāhu Kāla","start":"14:04","end":"15:27","startHours":14.06588952587436,"endHours":15.456189916458793,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:07","end":"08:30","startHours":7.114387572952197,"endHours":8.504687963536629,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:54","end":"11:17","startHours":9.894988354121061,"endHours":11.285288744705495,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:43","end":"10:05","startHours":9.709614968709804,"endHours":10.08036173953232,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.577821036480341,"endHours":7.874418453138353,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:18","end":"13:03","startHours":12.304842364467412,"endHours":13.046335906112443,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:38","end":"06:22","startHours":5.631400489662135,"endHours":6.372894031307165,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:11","end":"07:07","startHours":6.1875206458959084,"endHours":7.114387572952197,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:16","startHours":14.529322989402505,"endHours":15.270816531047537,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:02","end":"18:26","startHours":18.03679069762766,"endHours":18.436790697627657,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:14","end":"18:42","startHours":18.236790697627658,"endHours":18.700224161155802,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:59","end":"19:44","startHours":17.986790697627658,"endHours":19.736790697627658,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:18","end":"01:03","startHours":24.30484236446741,"endHours":25.04633590611244,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:07","end":"08:30","startHours":7.114387572952197,"endHours":8.504687963536629,"quality":"auspicious"},{"name":"Roga","start":"08:30","end":"09:54","startHours":8.504687963536629,"endHours":9.894988354121061,"quality":"inauspicious"},{"name":"Udveg","start":"09:54","end":"11:17","startHours":9.894988354121061,"endHours":11.285288744705495,"quality":"inauspicious"},{"name":"Chala","start":"11:17","end":"12:41","startHours":11.285288744705495,"endHours":12.675589135289927,"quality":"neutral"},{"name":"Labha","start":"12:41","end":"14:04","startHours":12.675589135289927,"endHours":14.06588952587436,"quality":"auspicious"},{"name":"Amṛta","start":"14:04","end":"15:27","startHours":14.06588952587436,"endHours":15.456189916458793,"quality":"auspicious"},{"name":"Kāla","start":"15:27","end":"16:51","startHours":15.456189916458793,"endHours":16.846490307043226,"quality":"inauspicious"},{"name":"Śubha","start":"16:51","end":"18:14","startHours":16.846490307043226,"endHours":18.236790697627658,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:14","end":"19:51","startHours":18.236790697627658,"endHours":19.846490307043226,"quality":"auspicious"},{"name":"Kāla","start":"19:51","end":"21:27","startHours":19.846490307043226,"endHours":21.456189916458793,"quality":"inauspicious"},{"name":"Śubha","start":"21:27","end":"23:04","startHours":21.456189916458793,"endHours":23.06588952587436,"quality":"auspicious"},{"name":"Roga","start":"23:04","end":"00:41","startHours":23.06588952587436,"endHours":24.675589135289925,"quality":"inauspicious"},{"name":"Udveg","start":"00:41","end":"02:17","startHours":24.675589135289925,"endHours":26.285288744705497,"quality":"inauspicious"},{"name":"Chala","start":"02:17","end":"03:54","startHours":26.285288744705497,"endHours":27.89498835412106,"quality":"neutral"},{"name":"Labha","start":"03:54","end":"05:30","startHours":27.89498835412106,"endHours":29.50468796353663,"quality":"auspicious"},{"name":"Amṛta","start":"05:30","end":"07:07","startHours":29.50468796353663,"endHours":31.114387572952197,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:07","end":"08:07","startHours":7.114387572952197,"endHours":8.114387572952197,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:07","end":"09:07","startHours":8.114387572952197,"endHours":9.114387572952197,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:07","end":"10:07","startHours":9.114387572952197,"endHours":10.114387572952197,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:07","end":"11:07","startHours":10.114387572952197,"endHours":11.114387572952197,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:07","end":"12:07","startHours":11.114387572952197,"endHours":12.114387572952197,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:07","end":"13:07","startHours":12.114387572952197,"endHours":13.114387572952197,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:07","end":"14:07","startHours":13.114387572952197,"endHours":14.114387572952197,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:07","end":"15:07","startHours":14.114387572952197,"endHours":15.114387572952197,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:07","end":"16:07","startHours":15.114387572952197,"endHours":16.114387572952197,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:07","end":"17:07","startHours":16.114387572952197,"endHours":17.114387572952197,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:07","end":"18:07","startHours":17.114387572952197,"endHours":18.114387572952197,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:07","end":"19:07","startHours":18.114387572952197,"endHours":19.114387572952197,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:07","end":"20:07","startHours":19.114387572952197,"endHours":20.114387572952197,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:07","end":"21:07","startHours":20.114387572952197,"endHours":21.114387572952197,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:07","end":"22:07","startHours":21.114387572952197,"endHours":22.114387572952197,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:07","end":"23:07","startHours":22.114387572952197,"endHours":23.114387572952197,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:07","end":"00:07","startHours":23.114387572952197,"endHours":24.114387572952197,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:07","end":"01:07","startHours":24.114387572952197,"endHours":25.114387572952197,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:07","end":"02:07","startHours":25.114387572952197,"endHours":26.114387572952197,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:07","end":"03:07","startHours":26.114387572952197,"endHours":27.114387572952197,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:07","end":"04:07","startHours":27.114387572952197,"endHours":28.114387572952197,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:07","end":"05:07","startHours":28.114387572952197,"endHours":29.114387572952197,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:07","end":"06:07","startHours":29.114387572952197,"endHours":30.114387572952197,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:07","end":"07:07","startHours":30.114387572952197,"endHours":31.114387572952197,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.033854183296008,"eotMinutes":-13.689348117395623,"ayanamsa":26.3826}},"calendars":{"vikram_samvat":2238,"vikram_samvatsara":"Jaya","saka_samvat":2103,"saka_samvatsara":"Vṛṣa","bengali_samvat":1588,"malayalam_era":1357,"nanakshahi_year":712,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Dvitīyā · Vikram 2238 Jaya · Śaka 2103 Vṛṣa"},"festivals":[],"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":"ujjain"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 1, 2181 CE · Ujjain · Vidhyamitra","description":"February 1, 2181 CE for Ujjain: Kṛṣṇa Dvitīyā, sūryodaya 07:07, sūryāsta 18:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ujjain/2181-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ujjain/2181-02-01","sa":"https://sa.vidhyamitra.com/city/ujjain/2181-02-01","hi":"https://hi.vidhyamitra.com/city/ujjain/2181-02-01","x-default":"https://vidhyamitra.com/city/ujjain/2181-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T14:26:30.657Z","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":"2026-06-02T14:26:30.657Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T14:26:30.657Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}