{"id":"vidhyamitra:city-day:perth:2013-09-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2013-09-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2013-09-06","date_display":"September 6, 2013 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":2013,"month":9,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456541.770833,"kali_year":5115,"ahargana":1868076.2708,"sun":{"sidereal_longitude":138.842,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":145.1399,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.2979,"elapsed_within_tithi_degrees":6.2979},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.1399,"elapsed_within_degrees":11.8066},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.9819},"karana":{"half_tithi_index":1,"name":"Bava"},"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":2013,"month":9,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456541.770833,"ahargana":1868076.2708,"kali_year":5115,"ayanamsa_lahiri":24.0441,"grahas":{"sun":{"sidereal_longitude":139.57849700000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":146.11989699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":-3.6935},"mars":{"sidereal_longitude":101.497097,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":150.16209700000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":80.25779699999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"venus":{"sidereal_longitude":179.73069699999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":193.26479700000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":200.3294,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":20.3294,"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":2013,"month":9,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456541.770833,"kali_year":5115,"ahargana":1868076.2708,"sun":{"sidereal_longitude":138.842,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":145.1399,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.2979,"elapsed_within_tithi_degrees":6.2979},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.1399,"elapsed_within_degrees":11.8066},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.9819},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.693,"elongation":6.298},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.693,"opposition_distance":173.702}},"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":"06:27","sunsetLocal":"18:02","solarNoonLocal":"12:14","dayLengthHours":11.593823230712509,"dayLengthDisplay":"11 Hours 35 Mins 38 Secs","nightLengthDisplay":"12 Hours 24 Mins 22 Secs","moonriseLocal":"06:48","moonsetLocal":"18:34","rahuKala":{"name":"Rāhu Kāla","start":"10:47","end":"12:14","startHours":10.79005530091026,"endHours":12.239283204749324,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:08","end":"16:35","startHours":15.137739012427453,"endHours":16.586966916266515,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:53","end":"09:20","startHours":7.891599493232134,"endHours":9.340827397071198,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:09","end":"09:32","startHours":9.147597009892655,"endHours":9.53405778424974,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:56","end":"07:14","startHours":6.9254475573394245,"endHours":7.234616176825091,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:38","startHours":11.85282243039224,"endHours":12.625743979106407,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:54","end":"05:40","startHours":4.896528491964736,"endHours":5.669450040678902,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:29","end":"06:27","startHours":5.476219653500361,"endHours":6.44237158939307,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:57","startHours":14.171587076534742,"endHours":14.94450862524891,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.83619482010558,"endHours":18.236194820105577,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:31","startHours":18.036194820105578,"endHours":18.519270788051934,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.786194820105578,"endHours":19.536194820105578,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:38","startHours":23.85282243039224,"endHours":24.625743979106407,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:27","end":"07:53","startHours":6.44237158939307,"endHours":7.891599493232134,"quality":"neutral"},{"name":"Labha","start":"07:53","end":"09:20","startHours":7.891599493232134,"endHours":9.340827397071198,"quality":"auspicious"},{"name":"Amṛta","start":"09:20","end":"10:47","startHours":9.340827397071198,"endHours":10.79005530091026,"quality":"auspicious"},{"name":"Kāla","start":"10:47","end":"12:14","startHours":10.79005530091026,"endHours":12.239283204749324,"quality":"inauspicious"},{"name":"Śubha","start":"12:14","end":"13:41","startHours":12.239283204749324,"endHours":13.688511108588388,"quality":"auspicious"},{"name":"Roga","start":"13:41","end":"15:08","startHours":13.688511108588388,"endHours":15.137739012427453,"quality":"inauspicious"},{"name":"Udveg","start":"15:08","end":"16:35","startHours":15.137739012427453,"endHours":16.586966916266515,"quality":"inauspicious"},{"name":"Chala","start":"16:35","end":"18:02","startHours":16.586966916266515,"endHours":18.036194820105578,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:02","end":"19:35","startHours":18.036194820105578,"endHours":19.586966916266515,"quality":"inauspicious"},{"name":"Udveg","start":"19:35","end":"21:08","startHours":19.586966916266515,"endHours":21.137739012427453,"quality":"inauspicious"},{"name":"Chala","start":"21:08","end":"22:41","startHours":21.137739012427453,"endHours":22.688511108588386,"quality":"neutral"},{"name":"Labha","start":"22:41","end":"00:14","startHours":22.688511108588386,"endHours":24.239283204749324,"quality":"auspicious"},{"name":"Amṛta","start":"00:14","end":"01:47","startHours":24.239283204749324,"endHours":25.79005530091026,"quality":"auspicious"},{"name":"Kāla","start":"01:47","end":"03:20","startHours":25.79005530091026,"endHours":27.340827397071195,"quality":"inauspicious"},{"name":"Śubha","start":"03:20","end":"04:53","startHours":27.340827397071195,"endHours":28.891599493232132,"quality":"auspicious"},{"name":"Roga","start":"04:53","end":"06:27","startHours":28.891599493232132,"endHours":30.44237158939307,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:27","end":"07:27","startHours":6.44237158939307,"endHours":7.44237158939307,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:27","end":"08:27","startHours":7.44237158939307,"endHours":8.442371589393069,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:27","end":"09:27","startHours":8.442371589393069,"endHours":9.442371589393069,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:27","end":"10:27","startHours":9.442371589393069,"endHours":10.442371589393069,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:27","end":"11:27","startHours":10.442371589393069,"endHours":11.442371589393069,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:27","end":"12:27","startHours":11.442371589393069,"endHours":12.442371589393069,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:27","end":"13:27","startHours":12.442371589393069,"endHours":13.442371589393069,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:27","end":"14:27","startHours":13.442371589393069,"endHours":14.442371589393069,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:27","end":"15:27","startHours":14.442371589393069,"endHours":15.442371589393069,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:27","end":"16:27","startHours":15.442371589393069,"endHours":16.44237158939307,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:27","end":"17:27","startHours":16.44237158939307,"endHours":17.44237158939307,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:27","end":"18:27","startHours":17.44237158939307,"endHours":18.44237158939307,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:27","end":"19:27","startHours":18.44237158939307,"endHours":19.44237158939307,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:27","end":"20:27","startHours":19.44237158939307,"endHours":20.44237158939307,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:27","end":"21:27","startHours":20.44237158939307,"endHours":21.44237158939307,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:27","end":"22:27","startHours":21.44237158939307,"endHours":22.44237158939307,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:27","end":"23:27","startHours":22.44237158939307,"endHours":23.44237158939307,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:27","end":"00:27","startHours":23.44237158939307,"endHours":24.44237158939307,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:27","end":"01:27","startHours":24.44237158939307,"endHours":25.44237158939307,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:27","end":"02:27","startHours":25.44237158939307,"endHours":26.44237158939307,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:27","end":"03:27","startHours":26.44237158939307,"endHours":27.44237158939307,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:27","end":"04:27","startHours":27.44237158939307,"endHours":28.44237158939307,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:27","end":"05:27","startHours":28.44237158939307,"endHours":29.44237158939307,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:27","end":"06:27","startHours":29.44237158939307,"endHours":30.44237158939307,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","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":"West (Paścim)","chandraVasa":"West","rahuVasa":"South-East","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":6.4390305990222405,"eotMinutes":2.2010077150405363,"ayanamsa":24.0441}},"calendars":{"vikram_samvat":2070,"vikram_samvatsara":"Parābhava","saka_samvat":1935,"saka_samvatsara":"Vijaya","bengali_samvat":1420,"malayalam_era":1189,"nanakshahi_year":544,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pratipada · Vikram 2070 Parābhava · Śaka 1935 Vijaya"},"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":"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":[]},"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 6, 2013 CE · Perth, Australia · Vidhyamitra","description":"September 6, 2013 CE for Perth, Australia: Śukla Pratipada, sūryodaya 06:27, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2013-09-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2013-09-06","sa":"https://sa.vidhyamitra.com/city/perth/2013-09-06","hi":"https://hi.vidhyamitra.com/city/perth/2013-09-06","x-default":"https://vidhyamitra.com/city/perth/2013-09-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T14:39:10.210Z","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":"2026-05-15T14:39:10.210Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T14:39:10.210Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}