{"id":"vidhyamitra:city-day:perth:2020-09-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2020-09-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2020-09-01","date_display":"September 1, 2020 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":2020,"month":9,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459093.770833,"kali_year":5122,"ahargana":1870628.2708,"sun":{"sidereal_longitude":134.1974,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":301.6432,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":167.4458,"elapsed_within_tithi_degrees":11.4458},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.6432,"elapsed_within_degrees":8.3099},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.8406},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"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":2020,"month":9,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459093.770833,"ahargana":1870628.2708,"kali_year":5122,"ayanamsa_lahiri":24.1417,"grahas":{"sun":{"sidereal_longitude":134.93479200000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":301.393992,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false,"latitude":-3.7527},"mars":{"sidereal_longitude":3.043892000000028,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":147.56739200000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":263.493692,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":89.86379199999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":271.81239200000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":65.1121,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":245.1121,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"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":2020,"month":9,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459093.770833,"kali_year":5122,"ahargana":1870628.2708,"sun":{"sidereal_longitude":134.1974,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":301.6432,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":167.4458,"elapsed_within_tithi_degrees":11.4458},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":301.6432,"elapsed_within_degrees":8.3099},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":75.8406},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.753,"elongation":167.446},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.753,"opposition_distance":12.554}},"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":"06:33","sunsetLocal":"18:00","solarNoonLocal":"12:16","dayLengthHours":11.448080831627717,"dayLengthDisplay":"11 Hours 26 Mins 53 Secs","nightLengthDisplay":"12 Hours 33 Mins 07 Secs","moonriseLocal":"16:46","moonsetLocal":"05:58","rahuKala":{"name":"Rāhu Kāla","start":"15:08","end":"16:34","startHours":15.130053244389039,"endHours":16.561063348342504,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:24","end":"10:50","startHours":9.406012828575182,"endHours":10.837022932528647,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:16","end":"13:42","startHours":12.268033036482112,"endHours":13.699043140435577,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:36","startHours":9.215211481381388,"endHours":9.596814175768978,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:01","end":"07:20","startHours":7.020995988652741,"endHours":7.3262781441628135,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:39","startHours":11.88643034209452,"endHours":12.6496357308697,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:01","end":"05:47","startHours":5.017581843117891,"endHours":5.780787231893072,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:35","end":"06:33","startHours":5.589985884699277,"endHours":6.543992620668253,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"14:56","startHours":14.176046508420065,"endHours":14.939251897195247,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.79207345229597,"endHours":18.19207345229597,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:28","startHours":17.99207345229597,"endHours":18.469076820280456,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.74207345229597,"endHours":19.49207345229597,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:39","startHours":23.886430342094517,"endHours":24.6496357308697,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:33","end":"07:59","startHours":6.543992620668253,"endHours":7.975002724621717,"quality":"inauspicious"},{"name":"Udveg","start":"07:59","end":"09:24","startHours":7.975002724621717,"endHours":9.406012828575182,"quality":"inauspicious"},{"name":"Chala","start":"09:24","end":"10:50","startHours":9.406012828575182,"endHours":10.837022932528647,"quality":"neutral"},{"name":"Labha","start":"10:50","end":"12:16","startHours":10.837022932528647,"endHours":12.268033036482112,"quality":"auspicious"},{"name":"Amṛta","start":"12:16","end":"13:42","startHours":12.268033036482112,"endHours":13.699043140435577,"quality":"auspicious"},{"name":"Kāla","start":"13:42","end":"15:08","startHours":13.699043140435577,"endHours":15.130053244389039,"quality":"inauspicious"},{"name":"Śubha","start":"15:08","end":"16:34","startHours":15.130053244389039,"endHours":16.561063348342504,"quality":"auspicious"},{"name":"Roga","start":"16:34","end":"18:00","startHours":16.561063348342504,"endHours":17.99207345229597,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:00","end":"19:34","startHours":17.99207345229597,"endHours":19.561063348342504,"quality":"inauspicious"},{"name":"Śubha","start":"19:34","end":"21:08","startHours":19.561063348342504,"endHours":21.13005324438904,"quality":"auspicious"},{"name":"Roga","start":"21:08","end":"22:42","startHours":21.13005324438904,"endHours":22.699043140435577,"quality":"inauspicious"},{"name":"Udveg","start":"22:42","end":"00:16","startHours":22.699043140435577,"endHours":24.26803303648211,"quality":"inauspicious"},{"name":"Chala","start":"00:16","end":"01:50","startHours":24.26803303648211,"endHours":25.837022932528647,"quality":"neutral"},{"name":"Labha","start":"01:50","end":"03:24","startHours":25.837022932528647,"endHours":27.406012828575182,"quality":"auspicious"},{"name":"Amṛta","start":"03:24","end":"04:59","startHours":27.406012828575182,"endHours":28.975002724621717,"quality":"auspicious"},{"name":"Kāla","start":"04:59","end":"06:33","startHours":28.975002724621717,"endHours":30.543992620668252,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:33","end":"07:33","startHours":6.543992620668253,"endHours":7.543992620668253,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:33","end":"08:33","startHours":7.543992620668253,"endHours":8.543992620668252,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:33","end":"09:33","startHours":8.543992620668252,"endHours":9.543992620668252,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:33","end":"10:33","startHours":9.543992620668252,"endHours":10.543992620668252,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:33","end":"11:33","startHours":10.543992620668252,"endHours":11.543992620668252,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:33","end":"12:33","startHours":11.543992620668252,"endHours":12.543992620668252,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:33","end":"13:33","startHours":12.543992620668252,"endHours":13.543992620668252,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:33","end":"14:33","startHours":13.543992620668252,"endHours":14.543992620668252,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:33","end":"15:33","startHours":14.543992620668252,"endHours":15.543992620668252,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:33","end":"16:33","startHours":15.543992620668252,"endHours":16.543992620668252,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:33","end":"17:33","startHours":16.543992620668252,"endHours":17.543992620668252,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:33","end":"18:33","startHours":17.543992620668252,"endHours":18.543992620668252,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:33","end":"19:33","startHours":18.543992620668252,"endHours":19.543992620668252,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:33","end":"20:33","startHours":19.543992620668252,"endHours":20.543992620668252,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:33","end":"21:33","startHours":20.543992620668252,"endHours":21.543992620668252,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:33","end":"22:33","startHours":21.543992620668252,"endHours":22.543992620668252,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:33","end":"23:33","startHours":22.543992620668252,"endHours":23.543992620668252,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:33","end":"00:33","startHours":23.543992620668252,"endHours":24.543992620668252,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:33","end":"01:33","startHours":24.543992620668252,"endHours":25.543992620668252,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:33","end":"02:33","startHours":25.543992620668252,"endHours":26.543992620668252,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:33","end":"03:33","startHours":26.543992620668252,"endHours":27.543992620668252,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:33","end":"04:33","startHours":27.543992620668252,"endHours":28.543992620668252,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:33","end":"05:33","startHours":28.543992620668252,"endHours":29.543992620668252,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:33","end":"06:33","startHours":29.543992620668252,"endHours":30.543992620668252,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":8.16583540689102,"eotMinutes":0.47601781107335894,"ayanamsa":24.1417}},"calendars":{"vikram_samvat":2077,"vikram_samvatsara":"Pramādī","saka_samvat":1942,"saka_samvatsara":"Śārvarī","bengali_samvat":1427,"malayalam_era":1196,"nanakshahi_year":551,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Caturdaśī · Vikram 2077 Pramādī · Śaka 1942 Śārvarī"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"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":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga September 1, 2020 CE · Perth, Australia · Vidhyamitra","description":"September 1, 2020 CE for Perth, Australia: Śukla Caturdaśī, sūryodaya 06:33, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2020-09-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2020-09-01","sa":"https://sa.vidhyamitra.com/city/perth/2020-09-01","hi":"https://hi.vidhyamitra.com/city/perth/2020-09-01","x-default":"https://vidhyamitra.com/city/perth/2020-09-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T05:53:57.152Z","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":"2026-05-15T05:53:57.152Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T05:53:57.152Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}