{"id":"vidhyamitra:city-day:lucknow:2026-04-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/lucknow/2026-04-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2026-04-18","date_display":"April 18, 2026 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2026,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461148.770833,"kali_year":5128,"ahargana":1872683.2708,"sun":{"sidereal_longitude":3.8709,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":9.8631,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":5.9922,"elapsed_within_tithi_degrees":5.9922},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.8631,"elapsed_within_degrees":9.8631},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.734},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":2026,"month":4,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461148.770833,"ahargana":1872683.2708,"kali_year":5128,"ayanamsa_lahiri":24.2203,"grahas":{"sun":{"sidereal_longitude":3.812176000000022,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":11.452376000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":3.6223},"mars":{"sidereal_longitude":341.758376,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":339.544676,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":82.895376,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"venus":{"sidereal_longitude":27.977976000000012,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":343.497576,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":316.2283,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":136.2283,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2026,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461148.770833,"kali_year":5128,"ahargana":1872683.2708,"sun":{"sidereal_longitude":3.8709,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":9.8631,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":5.9922,"elapsed_within_tithi_degrees":5.9922},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.8631,"elapsed_within_degrees":9.8631},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.734},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.622,"elongation":5.992},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.622,"opposition_distance":174.008}},"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":"05:40","sunsetLocal":"18:32","solarNoonLocal":"12:06","dayLengthHours":12.864313342743465,"dayLengthDisplay":"12 Hours 51 Mins 52 Secs","nightLengthDisplay":"11 Hours 08 Mins 08 Secs","moonriseLocal":"06:06","moonsetLocal":"19:07","rahuKala":{"name":"Rāhu Kāla","start":"08:53","end":"10:29","startHours":8.879076949382744,"endHours":10.487116117225678,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:42","end":"15:19","startHours":13.703194452911543,"endHours":15.311233620754477,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:40","end":"07:16","startHours":5.662998613696878,"endHours":7.271037781539811,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:06","startHours":8.664671727003686,"endHours":9.093482171761803,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:12","end":"06:33","startHours":6.1990116696445225,"endHours":6.542060025451015,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:40","end":"12:31","startHours":11.666344840310495,"endHours":12.523965729826726,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:57","end":"04:48","startHours":3.9477568346644163,"endHours":4.805377724180647,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:35","end":"05:40","startHours":4.5909725018015894,"endHours":5.662998613696878,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"15:06","startHours":14.239207508859188,"endHours":15.096828398375418,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.327311956440344,"endHours":18.727311956440342,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:04","startHours":18.527311956440343,"endHours":19.06332501238799,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.277311956440343,"endHours":20.027311956440343,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:40","end":"00:31","startHours":23.666344840310494,"endHours":24.523965729826728,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:40","end":"07:16","startHours":5.662998613696878,"endHours":7.271037781539811,"quality":"inauspicious"},{"name":"Śubha","start":"07:16","end":"08:53","startHours":7.271037781539811,"endHours":8.879076949382744,"quality":"auspicious"},{"name":"Roga","start":"08:53","end":"10:29","startHours":8.879076949382744,"endHours":10.487116117225678,"quality":"inauspicious"},{"name":"Udveg","start":"10:29","end":"12:06","startHours":10.487116117225678,"endHours":12.09515528506861,"quality":"inauspicious"},{"name":"Chala","start":"12:06","end":"13:42","startHours":12.09515528506861,"endHours":13.703194452911543,"quality":"neutral"},{"name":"Labha","start":"13:42","end":"15:19","startHours":13.703194452911543,"endHours":15.311233620754477,"quality":"auspicious"},{"name":"Amṛta","start":"15:19","end":"16:55","startHours":15.311233620754477,"endHours":16.91927278859741,"quality":"auspicious"},{"name":"Kāla","start":"16:55","end":"18:32","startHours":16.91927278859741,"endHours":18.527311956440343,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:32","end":"19:55","startHours":18.527311956440343,"endHours":19.91927278859741,"quality":"auspicious"},{"name":"Amṛta","start":"19:55","end":"21:19","startHours":19.91927278859741,"endHours":21.31123362075448,"quality":"auspicious"},{"name":"Kāla","start":"21:19","end":"22:42","startHours":21.31123362075448,"endHours":22.703194452911543,"quality":"inauspicious"},{"name":"Śubha","start":"22:42","end":"00:06","startHours":22.703194452911543,"endHours":24.09515528506861,"quality":"auspicious"},{"name":"Roga","start":"00:06","end":"01:29","startHours":24.09515528506861,"endHours":25.48711611722568,"quality":"inauspicious"},{"name":"Udveg","start":"01:29","end":"02:53","startHours":25.48711611722568,"endHours":26.879076949382743,"quality":"inauspicious"},{"name":"Chala","start":"02:53","end":"04:16","startHours":26.879076949382743,"endHours":28.27103778153981,"quality":"neutral"},{"name":"Labha","start":"04:16","end":"05:40","startHours":28.27103778153981,"endHours":29.662998613696878,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:40","end":"06:40","startHours":5.662998613696878,"endHours":6.662998613696878,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:40","end":"07:40","startHours":6.662998613696878,"endHours":7.662998613696878,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:40","end":"08:40","startHours":7.662998613696878,"endHours":8.662998613696878,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:40","end":"09:40","startHours":8.662998613696878,"endHours":9.662998613696878,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:40","end":"10:40","startHours":9.662998613696878,"endHours":10.662998613696878,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:40","end":"11:40","startHours":10.662998613696878,"endHours":11.662998613696878,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:40","end":"12:40","startHours":11.662998613696878,"endHours":12.662998613696878,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:40","end":"13:40","startHours":12.662998613696878,"endHours":13.662998613696878,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:40","end":"14:40","startHours":13.662998613696878,"endHours":14.662998613696878,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:40","end":"15:40","startHours":14.662998613696878,"endHours":15.662998613696878,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:40","end":"16:40","startHours":15.662998613696878,"endHours":16.662998613696878,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:40","end":"17:40","startHours":16.662998613696878,"endHours":17.662998613696878,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:40","end":"18:40","startHours":17.662998613696878,"endHours":18.662998613696878,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:40","end":"19:40","startHours":18.662998613696878,"endHours":19.662998613696878,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:40","end":"20:40","startHours":19.662998613696878,"endHours":20.662998613696878,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:40","end":"21:40","startHours":20.662998613696878,"endHours":21.662998613696878,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:40","end":"22:40","startHours":21.662998613696878,"endHours":22.662998613696878,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:40","end":"23:40","startHours":22.662998613696878,"endHours":23.662998613696878,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:40","end":"00:40","startHours":23.662998613696878,"endHours":24.662998613696878,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:40","end":"01:40","startHours":24.662998613696878,"endHours":25.662998613696878,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:40","end":"02:40","startHours":25.662998613696878,"endHours":26.662998613696878,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:40","end":"03:40","startHours":26.662998613696878,"endHours":27.662998613696878,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:40","end":"04:40","startHours":27.662998613696878,"endHours":28.662998613696878,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:40","end":"05:40","startHours":28.662998613696878,"endHours":29.662998613696878,"planetary_lord":"Mercury"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.77327411928693,"eotMinutes":0.5058828958834352,"ayanamsa":24.2203}},"calendars":{"vikram_samvat":2083,"vikram_samvatsara":"Siddhārthī","saka_samvat":1948,"saka_samvatsara":"Parābhava","bengali_samvat":1433,"malayalam_era":1202,"nanakshahi_year":557,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Pratipada · Vikram 2083 Siddhārthī · Śaka 1948 Parābhava"},"festivals":[],"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 18, 2026 CE · Lucknow, Uttar Pradesh · Vidhyamitra","description":"April 18, 2026 CE for Lucknow, Uttar Pradesh: Śukla Pratipada, sūryodaya 05:40, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/lucknow/2026-04-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/lucknow/2026-04-18","sa":"https://sa.vidhyamitra.com/city/lucknow/2026-04-18","hi":"https://hi.vidhyamitra.com/city/lucknow/2026-04-18","x-default":"https://vidhyamitra.com/city/lucknow/2026-04-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-08-22T04:58:20.288Z","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":"2026-08-22T04:58:20.288Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-08-22T04:58:20.288Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}