{"id":"vidhyamitra:city-day:lucknow:1990-04-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/lucknow/1990-04-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-04-07","date_display":"April 7, 1990 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":1990,"month":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447988.770833,"kali_year":5091,"ahargana":1859523.2708,"sun":{"sidereal_longitude":353.4271,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":137.9549,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.5278,"elapsed_within_tithi_degrees":0.5278},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2,"moon_longitude":137.9549,"elapsed_within_degrees":4.6216},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.382},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":1990,"month":4,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447988.770833,"ahargana":1859523.2708,"kali_year":5091,"ayanamsa_lahiri":23.717,"grahas":{"sun":{"sidereal_longitude":353.250384,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":138.43078400000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false,"latitude":-1.8607},"mars":{"sidereal_longitude":296.02848399999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":10.92628400000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":69.84108400000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":307.09538399999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":270.759284,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":293.5085,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":113.5085,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1990,"month":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447988.770833,"kali_year":5091,"ahargana":1859523.2708,"sun":{"sidereal_longitude":353.4271,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":137.9549,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.5278,"elapsed_within_tithi_degrees":0.5278},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2,"moon_longitude":137.9549,"elapsed_within_degrees":4.6216},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.382},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.861,"elongation":144.528},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.861,"opposition_distance":35.472}},"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":"05:51","sunsetLocal":"18:26","solarNoonLocal":"12:09","dayLengthHours":12.577744670471073,"dayLengthDisplay":"12 Hours 34 Mins 40 Secs","nightLengthDisplay":"11 Hours 25 Mins 20 Secs","moonriseLocal":"15:33","moonsetLocal":"04:06","rahuKala":{"name":"Rāhu Kāla","start":"09:00","end":"10:34","startHours":9.000617374796112,"endHours":10.572835458604995,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:43","end":"15:17","startHours":13.717271626222765,"endHours":15.28948971003165,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:51","end":"07:26","startHours":5.856181207178344,"endHours":7.428399290987228,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:47","end":"09:13","startHours":8.790988296954929,"endHours":9.210246452637296,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:23","end":"06:43","startHours":6.380253901781305,"endHours":6.715660426327201,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:34","startHours":11.725795386731512,"endHours":12.564311698096251,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:11","end":"05:01","startHours":4.179148584448868,"endHours":5.017664895813606,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:48","end":"05:51","startHours":4.808035817972421,"endHours":5.856181207178344,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"15:05","startHours":14.241344320825728,"endHours":15.079860632190467,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.23392587764942,"endHours":18.633925877649418,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:57","startHours":18.43392587764942,"endHours":18.95799857225238,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.18392587764942,"endHours":19.93392587764942,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:34","startHours":23.725795386731516,"endHours":24.56431169809625,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:51","end":"07:26","startHours":5.856181207178344,"endHours":7.428399290987228,"quality":"inauspicious"},{"name":"Śubha","start":"07:26","end":"09:00","startHours":7.428399290987228,"endHours":9.000617374796112,"quality":"auspicious"},{"name":"Roga","start":"09:00","end":"10:34","startHours":9.000617374796112,"endHours":10.572835458604995,"quality":"inauspicious"},{"name":"Udveg","start":"10:34","end":"12:09","startHours":10.572835458604995,"endHours":12.14505354241388,"quality":"inauspicious"},{"name":"Chala","start":"12:09","end":"13:43","startHours":12.14505354241388,"endHours":13.717271626222765,"quality":"neutral"},{"name":"Labha","start":"13:43","end":"15:17","startHours":13.717271626222765,"endHours":15.28948971003165,"quality":"auspicious"},{"name":"Amṛta","start":"15:17","end":"16:52","startHours":15.28948971003165,"endHours":16.861707793840534,"quality":"auspicious"},{"name":"Kāla","start":"16:52","end":"18:26","startHours":16.861707793840534,"endHours":18.43392587764942,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:26","end":"19:52","startHours":18.43392587764942,"endHours":19.861707793840534,"quality":"auspicious"},{"name":"Amṛta","start":"19:52","end":"21:17","startHours":19.861707793840534,"endHours":21.28948971003165,"quality":"auspicious"},{"name":"Kāla","start":"21:17","end":"22:43","startHours":21.28948971003165,"endHours":22.717271626222768,"quality":"inauspicious"},{"name":"Śubha","start":"22:43","end":"00:09","startHours":22.717271626222768,"endHours":24.145053542413883,"quality":"auspicious"},{"name":"Roga","start":"00:09","end":"01:34","startHours":24.145053542413883,"endHours":25.572835458605,"quality":"inauspicious"},{"name":"Udveg","start":"01:34","end":"03:00","startHours":25.572835458605,"endHours":27.000617374796114,"quality":"inauspicious"},{"name":"Chala","start":"03:00","end":"04:26","startHours":27.000617374796114,"endHours":28.42839929098723,"quality":"neutral"},{"name":"Labha","start":"04:26","end":"05:51","startHours":28.42839929098723,"endHours":29.856181207178345,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.856181207178344,"endHours":6.856181207178344,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.856181207178344,"endHours":7.856181207178344,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.856181207178344,"endHours":8.856181207178345,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.856181207178345,"endHours":9.856181207178345,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.856181207178345,"endHours":10.856181207178345,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.856181207178345,"endHours":11.856181207178345,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.856181207178345,"endHours":12.856181207178345,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.856181207178345,"endHours":13.856181207178345,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.856181207178345,"endHours":14.856181207178345,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.856181207178345,"endHours":15.856181207178345,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.856181207178345,"endHours":16.856181207178345,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.856181207178345,"endHours":17.856181207178345,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.856181207178345,"endHours":18.856181207178345,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.856181207178345,"endHours":19.856181207178345,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.856181207178345,"endHours":20.856181207178345,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.856181207178345,"endHours":21.856181207178345,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.856181207178345,"endHours":22.856181207178345,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.856181207178345,"endHours":23.856181207178345,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.856181207178345,"endHours":24.856181207178345,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.856181207178345,"endHours":25.856181207178345,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.856181207178345,"endHours":26.856181207178345,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.856181207178345,"endHours":27.856181207178345,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.856181207178345,"endHours":28.856181207178345,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.856181207178345,"endHours":29.856181207178345,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"East (Pūrva)","chandraVasa":"West","rahuVasa":"East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":6.665297555139844,"eotMinutes":-2.4880125448329173,"ayanamsa":23.717}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Trayodaśī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"lucknow"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 7, 1990 CE · Lucknow, Uttar Pradesh · Vidhyamitra","description":"April 7, 1990 CE for Lucknow, Uttar Pradesh: Śukla Trayodaśī, sūryodaya 05:51, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/lucknow/1990-04-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/lucknow/1990-04-07","sa":"https://sa.vidhyamitra.com/city/lucknow/1990-04-07","hi":"https://hi.vidhyamitra.com/city/lucknow/1990-04-07","x-default":"https://vidhyamitra.com/city/lucknow/1990-04-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:33:11.550Z","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":"2026-06-01T15:33:11.550Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:33:11.550Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}