{"id":"vidhyamitra:city-day:tokyo:1981-07-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/tokyo/1981-07-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-07","date_display":"July 7, 1981 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":1981,"month":7,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444792.770833,"kali_year":5083,"ahargana":1856327.2708,"sun":{"sidereal_longitude":80.9237,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":146.9004,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":65.9766,"elapsed_within_tithi_degrees":5.9766},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":146.9004,"elapsed_within_degrees":0.2337},"yoga":{"number":18,"name":"Varīyān","sum_longitude":227.8241},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1981,"month":7,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444792.770833,"ahargana":1856327.2708,"kali_year":5083,"ayanamsa_lahiri":23.5948,"grahas":{"sun":{"sidereal_longitude":81.25649499999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"moon":{"sidereal_longitude":147.64559499999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":3.1273},"mars":{"sidereal_longitude":58.93109500000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":63.296794999999975,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":159.403095,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":105.44019500000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":159.97249499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":102.8479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.8479,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":"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":1981,"month":7,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444792.770833,"kali_year":5083,"ahargana":1856327.2708,"sun":{"sidereal_longitude":80.9237,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":146.9004,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":65.9766,"elapsed_within_tithi_degrees":5.9766},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":146.9004,"elapsed_within_degrees":0.2337},"yoga":{"number":18,"name":"Varīyān","sum_longitude":227.8241},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.127,"elongation":65.977},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.127,"opposition_distance":114.023}},"eclipse_window_40days":[{"offset_days":10,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128}]},"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":"04:32","sunsetLocal":"19:00","solarNoonLocal":"11:46","dayLengthHours":14.475291720127984,"dayLengthDisplay":"14 Hours 28 Mins 31 Secs","nightLengthDisplay":"9 Hours 31 Mins 29 Secs","moonriseLocal":"09:59","moonsetLocal":"22:24","rahuKala":{"name":"Rāhu Kāla","start":"15:23","end":"17:12","startHours":15.384171261770355,"endHours":17.193582726786353,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:09","end":"09:57","startHours":8.146525401706363,"endHours":9.955936866722361,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:46","end":"13:34","startHours":11.765348331738359,"endHours":13.574759796754357,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"07:54","end":"08:23","startHours":7.9052705397042295,"endHours":8.387780263708496,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:08","end":"05:31","startHours":5.130839626679699,"endHours":5.516847405883112,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:17","end":"12:15","startHours":11.282838607734092,"endHours":12.247858055742626,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:36","end":"03:34","startHours":2.597663575657302,"endHours":3.5626830236658344,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:19","end":"04:32","startHours":3.3214281616637016,"endHours":4.527702471674367,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:09","startHours":14.177896951759688,"endHours":15.14291639976822,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:48","end":"19:12","startHours":18.80299419180235,"endHours":19.20299419180235,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:00","end":"19:36","startHours":19.00299419180235,"endHours":19.606131346807683,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:45","end":"20:30","startHours":18.75299419180235,"endHours":20.50299419180235,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:17","end":"00:15","startHours":23.282838607734092,"endHours":24.247858055742626,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"04:32","end":"06:20","startHours":4.527702471674367,"endHours":6.337113936690365,"quality":"inauspicious"},{"name":"Udveg","start":"06:20","end":"08:09","startHours":6.337113936690365,"endHours":8.146525401706363,"quality":"inauspicious"},{"name":"Chala","start":"08:09","end":"09:57","startHours":8.146525401706363,"endHours":9.955936866722361,"quality":"neutral"},{"name":"Labha","start":"09:57","end":"11:46","startHours":9.955936866722361,"endHours":11.765348331738359,"quality":"auspicious"},{"name":"Amṛta","start":"11:46","end":"13:34","startHours":11.765348331738359,"endHours":13.574759796754357,"quality":"auspicious"},{"name":"Kāla","start":"13:34","end":"15:23","startHours":13.574759796754357,"endHours":15.384171261770355,"quality":"inauspicious"},{"name":"Śubha","start":"15:23","end":"17:12","startHours":15.384171261770355,"endHours":17.193582726786353,"quality":"auspicious"},{"name":"Roga","start":"17:12","end":"19:00","startHours":17.193582726786353,"endHours":19.00299419180235,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:00","end":"20:12","startHours":19.00299419180235,"endHours":20.193582726786353,"quality":"inauspicious"},{"name":"Śubha","start":"20:12","end":"21:23","startHours":20.193582726786353,"endHours":21.384171261770355,"quality":"auspicious"},{"name":"Roga","start":"21:23","end":"22:34","startHours":21.384171261770355,"endHours":22.574759796754357,"quality":"inauspicious"},{"name":"Udveg","start":"22:34","end":"23:46","startHours":22.574759796754357,"endHours":23.76534833173836,"quality":"inauspicious"},{"name":"Chala","start":"23:46","end":"00:57","startHours":23.76534833173836,"endHours":24.95593686672236,"quality":"neutral"},{"name":"Labha","start":"00:57","end":"02:09","startHours":24.95593686672236,"endHours":26.146525401706363,"quality":"auspicious"},{"name":"Amṛta","start":"02:09","end":"03:20","startHours":26.146525401706363,"endHours":27.337113936690365,"quality":"auspicious"},{"name":"Kāla","start":"03:20","end":"04:32","startHours":27.337113936690365,"endHours":28.527702471674367,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"04:32","end":"05:32","startHours":4.527702471674367,"endHours":5.527702471674367,"planetary_lord":"Mars"},{"name":"Hora 2","start":"05:32","end":"06:32","startHours":5.527702471674367,"endHours":6.527702471674367,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"06:32","end":"07:32","startHours":6.527702471674367,"endHours":7.527702471674367,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"07:32","end":"08:32","startHours":7.527702471674367,"endHours":8.527702471674367,"planetary_lord":"Moon"},{"name":"Hora 5","start":"08:32","end":"09:32","startHours":8.527702471674367,"endHours":9.527702471674367,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"09:32","end":"10:32","startHours":9.527702471674367,"endHours":10.527702471674367,"planetary_lord":"Venus"},{"name":"Hora 7","start":"10:32","end":"11:32","startHours":10.527702471674367,"endHours":11.527702471674367,"planetary_lord":"Sun"},{"name":"Hora 8","start":"11:32","end":"12:32","startHours":11.527702471674367,"endHours":12.527702471674367,"planetary_lord":"Mars"},{"name":"Hora 9","start":"12:32","end":"13:32","startHours":12.527702471674367,"endHours":13.527702471674367,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"13:32","end":"14:32","startHours":13.527702471674367,"endHours":14.527702471674367,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"14:32","end":"15:32","startHours":14.527702471674367,"endHours":15.527702471674367,"planetary_lord":"Moon"},{"name":"Hora 12","start":"15:32","end":"16:32","startHours":15.527702471674367,"endHours":16.527702471674367,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"16:32","end":"17:32","startHours":16.527702471674367,"endHours":17.527702471674367,"planetary_lord":"Venus"},{"name":"Hora 14","start":"17:32","end":"18:32","startHours":17.527702471674367,"endHours":18.527702471674367,"planetary_lord":"Sun"},{"name":"Hora 15","start":"18:32","end":"19:32","startHours":18.527702471674367,"endHours":19.527702471674367,"planetary_lord":"Mars"},{"name":"Hora 16","start":"19:32","end":"20:32","startHours":19.527702471674367,"endHours":20.527702471674367,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"20:32","end":"21:32","startHours":20.527702471674367,"endHours":21.527702471674367,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"21:32","end":"22:32","startHours":21.527702471674367,"endHours":22.527702471674367,"planetary_lord":"Moon"},{"name":"Hora 19","start":"22:32","end":"23:32","startHours":22.527702471674367,"endHours":23.527702471674367,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"23:32","end":"00:32","startHours":23.527702471674367,"endHours":24.527702471674367,"planetary_lord":"Venus"},{"name":"Hora 21","start":"00:32","end":"01:32","startHours":24.527702471674367,"endHours":25.527702471674367,"planetary_lord":"Sun"},{"name":"Hora 22","start":"01:32","end":"02:32","startHours":25.527702471674367,"endHours":26.527702471674367,"planetary_lord":"Mars"},{"name":"Hora 23","start":"02:32","end":"03:32","startHours":26.527702471674367,"endHours":27.527702471674367,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"03:32","end":"04:32","startHours":27.527702471674367,"endHours":28.527702471674367,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","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":"North (Uttara)","chandraVasa":"West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":22.609347447816923,"eotMinutes":-4.522099904301516,"ayanamsa":23.5948}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Ṣaṣṭhī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 July 7, 1981 CE · Tokyo, Japan · Vidhyamitra","description":"July 7, 1981 CE for Tokyo, Japan: Śukla Ṣaṣṭhī, sūryodaya 04:32, sūryāsta 19:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/tokyo/1981-07-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/tokyo/1981-07-07","sa":"https://sa.vidhyamitra.com/city/tokyo/1981-07-07","hi":"https://hi.vidhyamitra.com/city/tokyo/1981-07-07","x-default":"https://vidhyamitra.com/city/tokyo/1981-07-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T09:55:31.927Z","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":"2026-06-03T09:55:31.927Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T09:55:31.927Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}