{"id":"vidhyamitra:city-day:tokyo:2001-04-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/tokyo/2001-04-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-04-01","date_display":"April 1, 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":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452000.770833,"kali_year":5102,"ahargana":1863535.2708,"sun":{"sidereal_longitude":347.6797,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":74.4203,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.7407,"elapsed_within_tithi_degrees":2.7407},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":74.4203,"elapsed_within_degrees":7.7537},"yoga":{"number":5,"name":"Śobhana","sum_longitude":62.1},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":4,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2452000.770833,"ahargana":1863535.2708,"kali_year":5102,"ayanamsa_lahiri":23.8704,"grahas":{"sun":{"sidereal_longitude":347.515897,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":72.192497,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-0.5099},"mars":{"sidereal_longitude":236.77029700000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":327.260397,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":43.70759700000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":344.545697,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":true},"saturn":{"sidereal_longitude":33.854896999999994,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":80.9334,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":260.9334,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452000.770833,"kali_year":5102,"ahargana":1863535.2708,"sun":{"sidereal_longitude":347.6797,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":74.4203,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":86.7407,"elapsed_within_tithi_degrees":2.7407},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":74.4203,"elapsed_within_degrees":7.7537},"yoga":{"number":5,"name":"Śobhana","sum_longitude":62.1},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.51,"elongation":86.741},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.51,"opposition_distance":93.259}},"eclipse_window_40days":[]},"city":{"slug":"tokyo","name":"Tokyo, Japan","lat":35.6762,"lon":139.6503,"tz_offset_hours":9,"country":"JP","tier":"diaspora"},"tier2":{"city":{"slug":"tokyo","name":"Tokyo, Japan","lat":35.6762,"lon":139.6503,"tz_offset_hours":9,"country":"JP","tier":"diaspora"},"sunriseLocal":"05:29","sunsetLocal":"18:03","solarNoonLocal":"11:46","dayLengthHours":12.569672441732948,"dayLengthDisplay":"12 Hours 34 Mins 11 Secs","nightLengthDisplay":"11 Hours 25 Mins 49 Secs","moonriseLocal":"10:09","moonsetLocal":"00:40","rahuKala":{"name":"Rāhu Kāla","start":"16:29","end":"18:03","startHours":16.47601210066905,"endHours":18.047221155885666,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:46","end":"13:20","startHours":11.762384935019192,"endHours":13.333593990235812,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:54","end":"16:29","startHours":14.904803045452429,"endHours":16.47601210066905,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:25","end":"08:50","startHours":8.410472283890407,"endHours":8.829461365281505,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:00","end":"06:20","startHours":6.001285065891592,"endHours":6.33647633100447,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:21","end":"12:11","startHours":11.343395853628094,"endHours":12.18137401641029,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:48","end":"04:38","startHours":3.801592388588326,"endHours":4.6395705513705225,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:26","end":"05:29","startHours":4.4300760106749735,"endHours":5.477548714152719,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:51","end":"14:42","startHours":13.857330341974684,"endHours":14.69530850475688,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:51","end":"18:15","startHours":17.847221155885666,"endHours":18.247221155885665,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:03","end":"18:34","startHours":18.047221155885666,"endHours":18.570957507624538,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:48","end":"19:33","startHours":17.797221155885666,"endHours":19.547221155885666,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:21","end":"00:11","startHours":23.343395853628092,"endHours":24.18137401641029,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:29","end":"07:03","startHours":5.477548714152719,"endHours":7.048757769369337,"quality":"inauspicious"},{"name":"Chala","start":"07:03","end":"08:37","startHours":7.048757769369337,"endHours":8.619966824585955,"quality":"neutral"},{"name":"Labha","start":"08:37","end":"10:11","startHours":8.619966824585955,"endHours":10.191175879802575,"quality":"auspicious"},{"name":"Amṛta","start":"10:11","end":"11:46","startHours":10.191175879802575,"endHours":11.762384935019192,"quality":"auspicious"},{"name":"Kāla","start":"11:46","end":"13:20","startHours":11.762384935019192,"endHours":13.333593990235812,"quality":"inauspicious"},{"name":"Śubha","start":"13:20","end":"14:54","startHours":13.333593990235812,"endHours":14.904803045452429,"quality":"auspicious"},{"name":"Roga","start":"14:54","end":"16:29","startHours":14.904803045452429,"endHours":16.47601210066905,"quality":"inauspicious"},{"name":"Udveg","start":"16:29","end":"18:03","startHours":16.47601210066905,"endHours":18.047221155885666,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:03","end":"19:29","startHours":18.047221155885666,"endHours":19.476012100669045,"quality":"auspicious"},{"name":"Roga","start":"19:29","end":"20:54","startHours":19.476012100669045,"endHours":20.90480304545243,"quality":"inauspicious"},{"name":"Udveg","start":"20:54","end":"22:20","startHours":20.90480304545243,"endHours":22.333593990235812,"quality":"inauspicious"},{"name":"Chala","start":"22:20","end":"23:46","startHours":22.333593990235812,"endHours":23.762384935019192,"quality":"neutral"},{"name":"Labha","start":"23:46","end":"01:11","startHours":23.762384935019192,"endHours":25.19117587980257,"quality":"auspicious"},{"name":"Amṛta","start":"01:11","end":"02:37","startHours":25.19117587980257,"endHours":26.619966824585955,"quality":"auspicious"},{"name":"Kāla","start":"02:37","end":"04:03","startHours":26.619966824585955,"endHours":28.048757769369338,"quality":"inauspicious"},{"name":"Śubha","start":"04:03","end":"05:29","startHours":28.048757769369338,"endHours":29.477548714152718,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:29","end":"06:29","startHours":5.477548714152719,"endHours":6.477548714152719,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:29","end":"07:29","startHours":6.477548714152719,"endHours":7.477548714152719,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:29","end":"08:29","startHours":7.477548714152719,"endHours":8.477548714152718,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:29","end":"09:29","startHours":8.477548714152718,"endHours":9.477548714152718,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:29","end":"10:29","startHours":9.477548714152718,"endHours":10.477548714152718,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:29","end":"11:29","startHours":10.477548714152718,"endHours":11.477548714152718,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:29","end":"12:29","startHours":11.477548714152718,"endHours":12.477548714152718,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:29","end":"13:29","startHours":12.477548714152718,"endHours":13.477548714152718,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:29","end":"14:29","startHours":13.477548714152718,"endHours":14.477548714152718,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:29","end":"15:29","startHours":14.477548714152718,"endHours":15.477548714152718,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:29","end":"16:29","startHours":15.477548714152718,"endHours":16.477548714152718,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:29","end":"17:29","startHours":16.477548714152718,"endHours":17.477548714152718,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:29","end":"18:29","startHours":17.477548714152718,"endHours":18.477548714152718,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:29","end":"19:29","startHours":18.477548714152718,"endHours":19.477548714152718,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:29","end":"20:29","startHours":19.477548714152718,"endHours":20.477548714152718,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:29","end":"21:29","startHours":20.477548714152718,"endHours":21.477548714152718,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:29","end":"22:29","startHours":21.477548714152718,"endHours":22.477548714152718,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:29","end":"23:29","startHours":22.477548714152718,"endHours":23.477548714152718,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:29","end":"00:29","startHours":23.477548714152718,"endHours":24.477548714152718,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:29","end":"01:29","startHours":24.477548714152718,"endHours":25.477548714152718,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:29","end":"02:29","startHours":25.477548714152718,"endHours":26.477548714152718,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:29","end":"03:29","startHours":26.477548714152718,"endHours":27.477548714152718,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:29","end":"04:29","startHours":27.477548714152718,"endHours":28.477548714152718,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:29","end":"05:29","startHours":28.477548714152718,"endHours":29.477548714152718,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":4.503586117612102,"eotMinutes":-4.344296101151456,"ayanamsa":23.8704}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"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 Aṣṭamī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"tokyo"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 1, 2001 CE · Tokyo, Japan · Vidhyamitra","description":"April 1, 2001 CE for Tokyo, Japan: Śukla Aṣṭamī, sūryodaya 05:29, sūryāsta 18:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/tokyo/2001-04-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/tokyo/2001-04-01","sa":"https://sa.vidhyamitra.com/city/tokyo/2001-04-01","hi":"https://hi.vidhyamitra.com/city/tokyo/2001-04-01","x-default":"https://vidhyamitra.com/city/tokyo/2001-04-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:06:17.948Z","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":"2026-06-02T13:06:17.948Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:06:17.948Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}