{"id":"vidhyamitra:city-day:lucknow:2001-12-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/lucknow/2001-12-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-12-20","date_display":"December 20, 2001 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":2001,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452263.770833,"kali_year":5103,"ahargana":1863798.2708,"sun":{"sidereal_longitude":243.9898,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":305.6277,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":61.6379,"elapsed_within_tithi_degrees":1.6379},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":305.6277,"elapsed_within_degrees":12.2944},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.6175},"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":2001,"month":12,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2452263.770833,"ahargana":1863798.2708,"kali_year":5103,"ayanamsa_lahiri":23.8805,"grahas":{"sun":{"sidereal_longitude":244.33624800000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":303.552648,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false,"latitude":-3.8411},"mars":{"sidereal_longitude":314.250848,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":252.817048,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":78.27754800000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":238.24244799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":46.17694799999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":66.9984,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":246.9984,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","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":2001,"month":12,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452263.770833,"kali_year":5103,"ahargana":1863798.2708,"sun":{"sidereal_longitude":243.9898,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":305.6277,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":61.6379,"elapsed_within_tithi_degrees":1.6379},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":305.6277,"elapsed_within_degrees":12.2944},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.6175},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.841,"elongation":61.638},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.841,"opposition_distance":118.362}},"eclipse_window_40days":[]},"city":{"slug":"lucknow","name":"Lucknow, Uttar Pradesh","lat":26.8467,"lon":80.9462,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"lucknow","name":"Lucknow, Uttar Pradesh","lat":26.8467,"lon":80.9462,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"06:51","sunsetLocal":"17:18","solarNoonLocal":"12:04","dayLengthHours":10.449777870587365,"dayLengthDisplay":"10 Hours 26 Mins 59 Secs","nightLengthDisplay":"13 Hours 33 Mins 01 Secs","moonriseLocal":"10:24","moonsetLocal":"21:38","rahuKala":{"name":"Rāhu Kāla","start":"13:23","end":"14:41","startHours":13.378943608448942,"endHours":14.685165842272362,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:51","end":"08:09","startHours":6.847832439331838,"endHours":8.154054673155258,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:28","end":"10:46","startHours":9.46027690697868,"endHours":10.7664991408021,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:17","end":"09:38","startHours":9.28611394246889,"endHours":9.634439871488468,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:17","end":"07:34","startHours":7.283239850606312,"endHours":7.561900593821974,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:25","startHours":11.724395445605943,"endHours":12.4210473036451,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:27","end":"06:09","startHours":5.454528723253523,"endHours":6.15118058129268,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:59","end":"06:51","startHours":5.977017616782891,"endHours":6.847832439331838,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:49","end":"14:31","startHours":13.814351019723414,"endHours":14.511002877762571,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.097610309919204,"endHours":17.497610309919203,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:44","startHours":17.297610309919204,"endHours":17.733017721193676,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.047610309919204,"endHours":18.797610309919204,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:25","startHours":23.724395445605943,"endHours":24.421047303645103,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:51","end":"08:09","startHours":6.847832439331838,"endHours":8.154054673155258,"quality":"auspicious"},{"name":"Roga","start":"08:09","end":"09:28","startHours":8.154054673155258,"endHours":9.46027690697868,"quality":"inauspicious"},{"name":"Udveg","start":"09:28","end":"10:46","startHours":9.46027690697868,"endHours":10.7664991408021,"quality":"inauspicious"},{"name":"Chala","start":"10:46","end":"12:04","startHours":10.7664991408021,"endHours":12.07272137462552,"quality":"neutral"},{"name":"Labha","start":"12:04","end":"13:23","startHours":12.07272137462552,"endHours":13.378943608448942,"quality":"auspicious"},{"name":"Amṛta","start":"13:23","end":"14:41","startHours":13.378943608448942,"endHours":14.685165842272362,"quality":"auspicious"},{"name":"Kāla","start":"14:41","end":"15:59","startHours":14.685165842272362,"endHours":15.991388076095781,"quality":"inauspicious"},{"name":"Śubha","start":"15:59","end":"17:18","startHours":15.991388076095781,"endHours":17.297610309919204,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:18","end":"18:59","startHours":17.297610309919204,"endHours":18.991388076095784,"quality":"auspicious"},{"name":"Kāla","start":"18:59","end":"20:41","startHours":18.991388076095784,"endHours":20.68516584227236,"quality":"inauspicious"},{"name":"Śubha","start":"20:41","end":"22:23","startHours":20.68516584227236,"endHours":22.378943608448942,"quality":"auspicious"},{"name":"Roga","start":"22:23","end":"00:04","startHours":22.378943608448942,"endHours":24.072721374625523,"quality":"inauspicious"},{"name":"Udveg","start":"00:04","end":"01:46","startHours":24.072721374625523,"endHours":25.7664991408021,"quality":"inauspicious"},{"name":"Chala","start":"01:46","end":"03:28","startHours":25.7664991408021,"endHours":27.46027690697868,"quality":"neutral"},{"name":"Labha","start":"03:28","end":"05:09","startHours":27.46027690697868,"endHours":29.154054673155258,"quality":"auspicious"},{"name":"Amṛta","start":"05:09","end":"06:51","startHours":29.154054673155258,"endHours":30.84783243933184,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:51","end":"07:51","startHours":6.847832439331838,"endHours":7.847832439331838,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:51","end":"08:51","startHours":7.847832439331838,"endHours":8.847832439331839,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:51","end":"09:51","startHours":8.847832439331839,"endHours":9.847832439331839,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:51","end":"10:51","startHours":9.847832439331839,"endHours":10.847832439331839,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:51","end":"11:51","startHours":10.847832439331839,"endHours":11.847832439331839,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:51","end":"12:51","startHours":11.847832439331839,"endHours":12.847832439331839,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:51","end":"13:51","startHours":12.847832439331839,"endHours":13.847832439331839,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:51","end":"14:51","startHours":13.847832439331839,"endHours":14.847832439331839,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:51","end":"15:51","startHours":14.847832439331839,"endHours":15.847832439331839,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:51","end":"16:51","startHours":15.847832439331839,"endHours":16.84783243933184,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:51","end":"17:51","startHours":16.84783243933184,"endHours":17.84783243933184,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:51","end":"18:51","startHours":17.84783243933184,"endHours":18.84783243933184,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:51","end":"19:51","startHours":18.84783243933184,"endHours":19.84783243933184,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:51","end":"20:51","startHours":19.84783243933184,"endHours":20.84783243933184,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:51","end":"21:51","startHours":20.84783243933184,"endHours":21.84783243933184,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:51","end":"22:51","startHours":21.84783243933184,"endHours":22.84783243933184,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:51","end":"23:51","startHours":22.84783243933184,"endHours":23.84783243933184,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:51","end":"00:51","startHours":23.84783243933184,"endHours":24.84783243933184,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:51","end":"01:51","startHours":24.84783243933184,"endHours":25.84783243933184,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:51","end":"02:51","startHours":25.84783243933184,"endHours":26.84783243933184,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:51","end":"03:51","startHours":26.84783243933184,"endHours":27.84783243933184,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:51","end":"04:51","startHours":27.84783243933184,"endHours":28.84783243933184,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:51","end":"05:51","startHours":28.84783243933184,"endHours":29.84783243933184,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:51","end":"06:51","startHours":29.84783243933184,"endHours":30.84783243933184,"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":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.424471754610607,"eotMinutes":1.851917522468745,"ayanamsa":23.8805}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Ṣaṣṭhī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"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}],"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":"lucknow"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 20, 2001 CE · Lucknow, Uttar Pradesh · Vidhyamitra","description":"December 20, 2001 CE for Lucknow, Uttar Pradesh: Śukla Ṣaṣṭhī, sūryodaya 06:51, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/lucknow/2001-12-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/lucknow/2001-12-20","sa":"https://sa.vidhyamitra.com/city/lucknow/2001-12-20","hi":"https://hi.vidhyamitra.com/city/lucknow/2001-12-20","x-default":"https://vidhyamitra.com/city/lucknow/2001-12-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T17:51:15.499Z","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":"2026-05-31T17:51:15.499Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T17:51:15.499Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}