{"id":"vidhyamitra:city-day:perth:1920-07-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1920-07-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-07-09","date_display":"July 9, 1920 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":1920,"month":7,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422514.770833,"kali_year":5022,"ahargana":1834049.2708,"sun":{"sidereal_longitude":83.5593,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":355.0381,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":271.4789,"elapsed_within_tithi_degrees":7.4789},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":355.0381,"elapsed_within_degrees":8.3715},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":78.5974},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1920,"month":7,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422514.770833,"ahargana":1834049.2708,"kali_year":5022,"ayanamsa_lahiri":22.7427,"grahas":{"sun":{"sidereal_longitude":83.76367900000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"moon":{"sidereal_longitude":351.706679,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false,"latitude":2.1252},"mars":{"sidereal_longitude":187.70957899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":107.95437900000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":117.30887899999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":86.32597900000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":135.59067900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":203.2436,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":23.2436,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1920,"month":7,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422514.770833,"kali_year":5022,"ahargana":1834049.2708,"sun":{"sidereal_longitude":83.5593,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":355.0381,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":271.4789,"elapsed_within_tithi_degrees":7.4789},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":355.0381,"elapsed_within_degrees":8.3715},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":78.5974},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.125,"elongation":88.521},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.125,"opposition_distance":91.479}},"eclipse_window_40days":[]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"07:17","sunsetLocal":"17:26","solarNoonLocal":"12:21","dayLengthHours":10.158397819894214,"dayLengthDisplay":"10 Hours 09 Mins 30 Secs","nightLengthDisplay":"13 Hours 50 Mins 30 Secs","moonriseLocal":"00:25","moonsetLocal":"12:02","rahuKala":{"name":"Rāhu Kāla","start":"11:05","end":"12:21","startHours":11.086641616307634,"endHours":12.356441343794412,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:54","end":"16:10","startHours":14.896040798767965,"endHours":16.16584052625474,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:33","end":"09:49","startHours":8.547042161334081,"endHours":9.816841888820857,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"09:59","startHours":9.647535258489288,"endHours":9.986148519152428,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:42","end":"07:58","startHours":7.70050900967623,"endHours":7.971399618206743,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:42","startHours":12.01782808313127,"endHours":12.695054604457553,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:55","end":"06:36","startHours":5.922789391194742,"endHours":6.600015912521023,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:26","end":"07:17","startHours":6.4307092821894525,"endHours":7.277242433847304,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:03","end":"14:44","startHours":14.049507647110113,"endHours":14.726734168436394,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:14","end":"17:38","startHours":17.23564025374152,"endHours":17.635640253741517,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:26","end":"17:52","startHours":17.435640253741518,"endHours":17.858906829570444,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:11","end":"18:56","startHours":17.185640253741518,"endHours":18.935640253741518,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:42","startHours":24.01782808313127,"endHours":24.695054604457553,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:17","end":"08:33","startHours":7.277242433847304,"endHours":8.547042161334081,"quality":"neutral"},{"name":"Labha","start":"08:33","end":"09:49","startHours":8.547042161334081,"endHours":9.816841888820857,"quality":"auspicious"},{"name":"Amṛta","start":"09:49","end":"11:05","startHours":9.816841888820857,"endHours":11.086641616307634,"quality":"auspicious"},{"name":"Kāla","start":"11:05","end":"12:21","startHours":11.086641616307634,"endHours":12.356441343794412,"quality":"inauspicious"},{"name":"Śubha","start":"12:21","end":"13:38","startHours":12.356441343794412,"endHours":13.626241071281187,"quality":"auspicious"},{"name":"Roga","start":"13:38","end":"14:54","startHours":13.626241071281187,"endHours":14.896040798767965,"quality":"inauspicious"},{"name":"Udveg","start":"14:54","end":"16:10","startHours":14.896040798767965,"endHours":16.16584052625474,"quality":"inauspicious"},{"name":"Chala","start":"16:10","end":"17:26","startHours":16.16584052625474,"endHours":17.435640253741518,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:26","end":"19:10","startHours":17.435640253741518,"endHours":19.16584052625474,"quality":"inauspicious"},{"name":"Udveg","start":"19:10","end":"20:54","startHours":19.16584052625474,"endHours":20.896040798767963,"quality":"inauspicious"},{"name":"Chala","start":"20:54","end":"22:38","startHours":20.896040798767963,"endHours":22.626241071281186,"quality":"neutral"},{"name":"Labha","start":"22:38","end":"00:21","startHours":22.626241071281186,"endHours":24.356441343794412,"quality":"auspicious"},{"name":"Amṛta","start":"00:21","end":"02:05","startHours":24.356441343794412,"endHours":26.086641616307634,"quality":"auspicious"},{"name":"Kāla","start":"02:05","end":"03:49","startHours":26.086641616307634,"endHours":27.816841888820857,"quality":"inauspicious"},{"name":"Śubha","start":"03:49","end":"05:33","startHours":27.816841888820857,"endHours":29.547042161334083,"quality":"auspicious"},{"name":"Roga","start":"05:33","end":"07:17","startHours":29.547042161334083,"endHours":31.277242433847306,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:17","end":"08:17","startHours":7.277242433847304,"endHours":8.277242433847304,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:17","end":"09:17","startHours":8.277242433847304,"endHours":9.277242433847304,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:17","end":"10:17","startHours":9.277242433847304,"endHours":10.277242433847304,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:17","end":"11:17","startHours":10.277242433847304,"endHours":11.277242433847304,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:17","end":"12:17","startHours":11.277242433847304,"endHours":12.277242433847304,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:17","end":"13:17","startHours":12.277242433847304,"endHours":13.277242433847304,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:17","end":"14:17","startHours":13.277242433847304,"endHours":14.277242433847304,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:17","end":"15:17","startHours":14.277242433847304,"endHours":15.277242433847304,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:17","end":"16:17","startHours":15.277242433847304,"endHours":16.277242433847306,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:17","end":"17:17","startHours":16.277242433847306,"endHours":17.277242433847306,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:17","end":"18:17","startHours":17.277242433847306,"endHours":18.277242433847306,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:17","end":"19:17","startHours":18.277242433847306,"endHours":19.277242433847306,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:17","end":"20:17","startHours":19.277242433847306,"endHours":20.277242433847306,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:17","end":"21:17","startHours":20.277242433847306,"endHours":21.277242433847306,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:17","end":"22:17","startHours":21.277242433847306,"endHours":22.277242433847306,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:17","end":"23:17","startHours":22.277242433847306,"endHours":23.277242433847306,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:17","end":"00:17","startHours":23.277242433847306,"endHours":24.277242433847306,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:17","end":"01:17","startHours":24.277242433847306,"endHours":25.277242433847306,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:17","end":"02:17","startHours":25.277242433847306,"endHours":26.277242433847306,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:17","end":"03:17","startHours":26.277242433847306,"endHours":27.277242433847306,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:17","end":"04:17","startHours":27.277242433847306,"endHours":28.277242433847306,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:17","end":"05:17","startHours":28.277242433847306,"endHours":29.277242433847306,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:17","end":"06:17","startHours":29.277242433847306,"endHours":30.277242433847306,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:17","end":"07:17","startHours":30.277242433847306,"endHours":31.277242433847306,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Siddhi","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":22.416781591683016,"eotMinutes":-4.828480627664775,"ayanamsa":22.7427}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha (Adhika) Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha (Adhika) Kṛṣṇa Aṣṭamī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 9, 1920 CE · Perth, Australia · Vidhyamitra","description":"July 9, 1920 CE for Perth, Australia: Kṛṣṇa Aṣṭamī, sūryodaya 07:17, sūryāsta 17:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1920-07-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1920-07-09","sa":"https://sa.vidhyamitra.com/city/perth/1920-07-09","hi":"https://hi.vidhyamitra.com/city/perth/1920-07-09","x-default":"https://vidhyamitra.com/city/perth/1920-07-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T23:38:41.641Z","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":"2026-05-31T23:38:41.641Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T23:38:41.641Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}