{"id":"vidhyamitra:city-day:perth:2001-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2001-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-08-17","date_display":"August 17, 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":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452138.770833,"kali_year":5103,"ahargana":1863673.2708,"sun":{"sidereal_longitude":119.7153,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":91.6738,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.9584,"elapsed_within_tithi_degrees":7.9584},"nakshatra":{"number":7,"name":"Punarvasu","pada":4,"moon_longitude":91.6738,"elapsed_within_degrees":11.6738},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.3891},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"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":2001,"month":8,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2452138.770833,"ahargana":1863673.2708,"kali_year":5103,"ayanamsa_lahiri":23.8757,"grahas":{"sun":{"sidereal_longitude":120.34212400000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":90.88992400000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":1.3932},"mars":{"sidereal_longitude":236.308624,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":131.34162400000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":73.33232399999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":84.14032400000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":49.56662399999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":73.6215,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":253.6215,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2001,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452138.770833,"kali_year":5103,"ahargana":1863673.2708,"sun":{"sidereal_longitude":119.7153,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":91.6738,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.9584,"elapsed_within_tithi_degrees":7.9584},"nakshatra":{"number":7,"name":"Punarvasu","pada":4,"moon_longitude":91.6738,"elapsed_within_degrees":11.6738},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.3891},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.393,"elongation":28.042},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.393,"opposition_distance":151.958}},"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":"06:51","sunsetLocal":"17:50","solarNoonLocal":"12:20","dayLengthHours":10.992419252969668,"dayLengthDisplay":"10 Hours 59 Mins 33 Secs","nightLengthDisplay":"13 Hours 00 Mins 27 Secs","moonriseLocal":"05:15","moonsetLocal":"15:30","rahuKala":{"name":"Rāhu Kāla","start":"10:58","end":"12:20","startHours":10.964473952614092,"endHours":12.3385263592353,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:05","end":"16:28","startHours":15.086631172477716,"endHours":16.460683579098927,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:13","end":"09:35","startHours":8.216369139371675,"endHours":9.590421545992882,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:46","startHours":9.407214558443389,"endHours":9.773628533542377,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:18","end":"07:36","startHours":7.300334201624202,"endHours":7.5934653817033935,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.97211238413631,"endHours":12.704940334334289,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:07","startHours":5.37666083235451,"endHours":6.109488782552488,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:56","end":"06:51","startHours":5.926281795002994,"endHours":6.842316732750466,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.170596234730244,"endHours":14.903424184928221,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:38","end":"18:02","startHours":17.634735985720134,"endHours":18.034735985720133,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:50","end":"18:18","startHours":17.834735985720133,"endHours":18.29275345459387,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:35","end":"19:20","startHours":17.584735985720133,"endHours":19.334735985720133,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.97211238413631,"endHours":24.70494033433429,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:51","end":"08:13","startHours":6.842316732750466,"endHours":8.216369139371675,"quality":"neutral"},{"name":"Labha","start":"08:13","end":"09:35","startHours":8.216369139371675,"endHours":9.590421545992882,"quality":"auspicious"},{"name":"Amṛta","start":"09:35","end":"10:58","startHours":9.590421545992882,"endHours":10.964473952614092,"quality":"auspicious"},{"name":"Kāla","start":"10:58","end":"12:20","startHours":10.964473952614092,"endHours":12.3385263592353,"quality":"inauspicious"},{"name":"Śubha","start":"12:20","end":"13:43","startHours":12.3385263592353,"endHours":13.71257876585651,"quality":"auspicious"},{"name":"Roga","start":"13:43","end":"15:05","startHours":13.71257876585651,"endHours":15.086631172477716,"quality":"inauspicious"},{"name":"Udveg","start":"15:05","end":"16:28","startHours":15.086631172477716,"endHours":16.460683579098927,"quality":"inauspicious"},{"name":"Chala","start":"16:28","end":"17:50","startHours":16.460683579098927,"endHours":17.834735985720133,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:50","end":"19:28","startHours":17.834735985720133,"endHours":19.460683579098927,"quality":"inauspicious"},{"name":"Udveg","start":"19:28","end":"21:05","startHours":19.460683579098927,"endHours":21.086631172477716,"quality":"inauspicious"},{"name":"Chala","start":"21:05","end":"22:43","startHours":21.086631172477716,"endHours":22.712578765856506,"quality":"neutral"},{"name":"Labha","start":"22:43","end":"00:20","startHours":22.712578765856506,"endHours":24.3385263592353,"quality":"auspicious"},{"name":"Amṛta","start":"00:20","end":"01:58","startHours":24.3385263592353,"endHours":25.964473952614092,"quality":"auspicious"},{"name":"Kāla","start":"01:58","end":"03:35","startHours":25.964473952614092,"endHours":27.590421545992882,"quality":"inauspicious"},{"name":"Śubha","start":"03:35","end":"05:13","startHours":27.590421545992882,"endHours":29.216369139371672,"quality":"auspicious"},{"name":"Roga","start":"05:13","end":"06:51","startHours":29.216369139371672,"endHours":30.842316732750465,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:51","end":"07:51","startHours":6.842316732750466,"endHours":7.842316732750466,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:51","end":"08:51","startHours":7.842316732750466,"endHours":8.842316732750465,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:51","end":"09:51","startHours":8.842316732750465,"endHours":9.842316732750465,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:51","end":"10:51","startHours":9.842316732750465,"endHours":10.842316732750465,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:51","end":"11:51","startHours":10.842316732750465,"endHours":11.842316732750465,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:51","end":"12:51","startHours":11.842316732750465,"endHours":12.842316732750465,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:51","end":"13:51","startHours":12.842316732750465,"endHours":13.842316732750465,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:51","end":"14:51","startHours":13.842316732750465,"endHours":14.842316732750465,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:51","end":"15:51","startHours":14.842316732750465,"endHours":15.842316732750465,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:51","end":"16:51","startHours":15.842316732750465,"endHours":16.842316732750465,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:51","end":"17:51","startHours":16.842316732750465,"endHours":17.842316732750465,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:51","end":"18:51","startHours":17.842316732750465,"endHours":18.842316732750465,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:51","end":"19:51","startHours":18.842316732750465,"endHours":19.842316732750465,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:51","end":"20:51","startHours":19.842316732750465,"endHours":20.842316732750465,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:51","end":"21:51","startHours":20.842316732750465,"endHours":21.842316732750465,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:51","end":"22:51","startHours":21.842316732750465,"endHours":22.842316732750465,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:51","end":"23:51","startHours":22.842316732750465,"endHours":23.842316732750465,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:51","end":"00:51","startHours":23.842316732750465,"endHours":24.842316732750465,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:51","end":"01:51","startHours":24.842316732750465,"endHours":25.842316732750465,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:51","end":"02:51","startHours":25.842316732750465,"endHours":26.842316732750465,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:51","end":"03:51","startHours":26.842316732750465,"endHours":27.842316732750465,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:51","end":"04:51","startHours":27.842316732750465,"endHours":28.842316732750465,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:51","end":"05:51","startHours":28.842316732750465,"endHours":29.842316732750465,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:51","end":"06:51","startHours":29.842316732750465,"endHours":30.842316732750465,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.44761819856436,"eotMinutes":-3.7535815541179196,"ayanamsa":23.8757}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Trayodaśī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 August 17, 2001 CE · Perth, Australia · Vidhyamitra","description":"August 17, 2001 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 06:51, sūryāsta 17:50.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2001-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2001-08-17","sa":"https://sa.vidhyamitra.com/city/perth/2001-08-17","hi":"https://hi.vidhyamitra.com/city/perth/2001-08-17","x-default":"https://vidhyamitra.com/city/perth/2001-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T17:38:26.539Z","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":"2026-05-16T17:38:26.539Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T17:38:26.539Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}