{"id":"vidhyamitra:city-day:lucknow:1971-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/lucknow/1971-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-02-01","date_display":"February 1, 1971 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":1971,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440983.770833,"kali_year":5072,"ahargana":1852518.2708,"sun":{"sidereal_longitude":288.1514,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":354.8106,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":66.6592,"elapsed_within_tithi_degrees":6.6592},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.8106,"elapsed_within_degrees":8.144},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.9621},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1971,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2440983.770833,"ahargana":1852518.2708,"kali_year":5072,"ayanamsa_lahiri":23.4491,"grahas":{"sun":{"sidereal_longitude":288.0675269999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":357.878527,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":3.453},"mars":{"sidereal_longitude":222.569527,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":267.126927,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":220.06912699999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":241.90752699999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":22.861327000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":304.6671,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":124.6671,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":1971,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440983.770833,"kali_year":5072,"ahargana":1852518.2708,"sun":{"sidereal_longitude":288.1514,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":354.8106,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":66.6592,"elapsed_within_tithi_degrees":6.6592},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.8106,"elapsed_within_degrees":8.144},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.9621},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.453,"elongation":66.659},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.453,"opposition_distance":113.341}},"eclipse_window_40days":[{"offset_days":9,"type":"lunar","occurs":true,"moon_latitude":0.69,"opposition_distance":1.965}]},"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":"06:52","sunsetLocal":"17:48","solarNoonLocal":"12:20","dayLengthHours":10.920518059308456,"dayLengthDisplay":"10 Hours 55 Mins 14 Secs","nightLengthDisplay":"13 Hours 04 Mins 46 Secs","moonriseLocal":"10:40","moonsetLocal":"23:19","rahuKala":{"name":"Rāhu Kāla","start":"08:14","end":"09:36","startHours":8.23654819638259,"endHours":9.601612953796145,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:58","end":"12:20","startHours":10.966677711209703,"endHours":12.331742468623261,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:42","end":"15:04","startHours":13.696807226036817,"endHours":15.061871983450374,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:47","startHours":9.419604319474338,"endHours":9.783621588117954,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:20","end":"07:37","startHours":7.326505024773551,"endHours":7.617718839688443,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.967725199979647,"endHours":12.695759737266876,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:25","end":"06:09","startHours":5.415414364394572,"endHours":6.1434489016818015,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:58","end":"06:52","startHours":5.961440267359994,"endHours":6.871483438969032,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:53","startHours":14.151828811841337,"endHours":14.879863349128568,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:36","end":"18:00","startHours":17.59200149827749,"endHours":17.99200149827749,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:48","end":"18:15","startHours":17.79200149827749,"endHours":18.24702308408201,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:33","end":"19:18","startHours":17.54200149827749,"endHours":19.29200149827749,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.967725199979647,"endHours":24.695759737266876,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:52","end":"08:14","startHours":6.871483438969032,"endHours":8.23654819638259,"quality":"auspicious"},{"name":"Kāla","start":"08:14","end":"09:36","startHours":8.23654819638259,"endHours":9.601612953796145,"quality":"inauspicious"},{"name":"Śubha","start":"09:36","end":"10:58","startHours":9.601612953796145,"endHours":10.966677711209703,"quality":"auspicious"},{"name":"Roga","start":"10:58","end":"12:20","startHours":10.966677711209703,"endHours":12.331742468623261,"quality":"inauspicious"},{"name":"Udveg","start":"12:20","end":"13:42","startHours":12.331742468623261,"endHours":13.696807226036817,"quality":"inauspicious"},{"name":"Chala","start":"13:42","end":"15:04","startHours":13.696807226036817,"endHours":15.061871983450374,"quality":"neutral"},{"name":"Labha","start":"15:04","end":"16:26","startHours":15.061871983450374,"endHours":16.426936740863933,"quality":"auspicious"},{"name":"Amṛta","start":"16:26","end":"17:48","startHours":16.426936740863933,"endHours":17.79200149827749,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:48","end":"19:26","startHours":17.79200149827749,"endHours":19.426936740863933,"quality":"neutral"},{"name":"Labha","start":"19:26","end":"21:04","startHours":19.426936740863933,"endHours":21.061871983450374,"quality":"auspicious"},{"name":"Amṛta","start":"21:04","end":"22:42","startHours":21.061871983450374,"endHours":22.696807226036817,"quality":"auspicious"},{"name":"Kāla","start":"22:42","end":"00:20","startHours":22.696807226036817,"endHours":24.33174246862326,"quality":"inauspicious"},{"name":"Śubha","start":"00:20","end":"01:58","startHours":24.33174246862326,"endHours":25.966677711209705,"quality":"auspicious"},{"name":"Roga","start":"01:58","end":"03:36","startHours":25.966677711209705,"endHours":27.60161295379615,"quality":"inauspicious"},{"name":"Udveg","start":"03:36","end":"05:14","startHours":27.60161295379615,"endHours":29.23654819638259,"quality":"inauspicious"},{"name":"Chala","start":"05:14","end":"06:52","startHours":29.23654819638259,"endHours":30.871483438969033,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:52","end":"07:52","startHours":6.871483438969032,"endHours":7.871483438969032,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:52","end":"08:52","startHours":7.871483438969032,"endHours":8.871483438969033,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:52","end":"09:52","startHours":8.871483438969033,"endHours":9.871483438969033,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:52","end":"10:52","startHours":9.871483438969033,"endHours":10.871483438969033,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:52","end":"11:52","startHours":10.871483438969033,"endHours":11.871483438969033,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:52","end":"12:52","startHours":11.871483438969033,"endHours":12.871483438969033,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:52","end":"13:52","startHours":12.871483438969033,"endHours":13.871483438969033,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:52","end":"14:52","startHours":13.871483438969033,"endHours":14.871483438969033,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:52","end":"15:52","startHours":14.871483438969033,"endHours":15.871483438969033,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:52","end":"16:52","startHours":15.871483438969033,"endHours":16.871483438969033,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:52","end":"17:52","startHours":16.871483438969033,"endHours":17.871483438969033,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:52","end":"18:52","startHours":17.871483438969033,"endHours":18.871483438969033,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:52","end":"19:52","startHours":18.871483438969033,"endHours":19.871483438969033,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:52","end":"20:52","startHours":19.871483438969033,"endHours":20.871483438969033,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:52","end":"21:52","startHours":20.871483438969033,"endHours":21.871483438969033,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:52","end":"22:52","startHours":21.871483438969033,"endHours":22.871483438969033,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:52","end":"23:52","startHours":22.871483438969033,"endHours":23.871483438969033,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:52","end":"00:52","startHours":23.871483438969033,"endHours":24.871483438969033,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:52","end":"01:52","startHours":24.871483438969033,"endHours":25.871483438969033,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:52","end":"02:52","startHours":25.871483438969033,"endHours":26.871483438969033,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:52","end":"03:52","startHours":26.871483438969033,"endHours":27.871483438969033,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:52","end":"04:52","startHours":27.871483438969033,"endHours":28.871483438969033,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:52","end":"05:52","startHours":28.871483438969033,"endHours":29.871483438969033,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:52","end":"06:52","startHours":29.871483438969033,"endHours":30.871483438969033,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.325964565739845,"eotMinutes":-13.689348117395623,"ayanamsa":23.4491}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","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 Śukla Ṣaṣṭhī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 February 1, 1971 CE · Lucknow, Uttar Pradesh · Vidhyamitra","description":"February 1, 1971 CE for Lucknow, Uttar Pradesh: Śukla Ṣaṣṭhī, sūryodaya 06:52, sūryāsta 17:48.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/lucknow/1971-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/lucknow/1971-02-01","sa":"https://sa.vidhyamitra.com/city/lucknow/1971-02-01","hi":"https://hi.vidhyamitra.com/city/lucknow/1971-02-01","x-default":"https://vidhyamitra.com/city/lucknow/1971-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:46:06.316Z","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":"2026-06-01T15:46:06.316Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:46:06.316Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}