{"id":"vidhyamitra:city-day:perth:2172-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2172-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2172-08-17","date_display":"August 17, 2172 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":2172,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514595.770833,"kali_year":5274,"ahargana":1926130.2708,"sun":{"sidereal_longitude":117.5667,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":86.9311,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":329.3644,"elapsed_within_tithi_degrees":5.3644},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":86.9311,"elapsed_within_degrees":6.9311},"yoga":{"number":16,"name":"Siddhi","sum_longitude":204.4979},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2172,"month":8,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514595.770833,"ahargana":1926130.2708,"kali_year":5274,"ayanamsa_lahiri":26.2645,"grahas":{"sun":{"sidereal_longitude":118.59810700000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":88.83210700000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false,"latitude":4.4623},"mars":{"sidereal_longitude":196.85070700000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":126.33840699999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":193.34440700000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":75.64890700000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":331.9973070000001,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":4.3491,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":184.3491,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"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":2172,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514595.770833,"kali_year":5274,"ahargana":1926130.2708,"sun":{"sidereal_longitude":117.5667,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":86.9311,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":329.3644,"elapsed_within_tithi_degrees":5.3644},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":86.9311,"elapsed_within_degrees":6.9311},"yoga":{"number":16,"name":"Siddhi","sum_longitude":204.4979},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.462,"elongation":30.636},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.462,"opposition_distance":149.364}},"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":"06:50","sunsetLocal":"17:51","solarNoonLocal":"12:20","dayLengthHours":11.011316298665925,"dayLengthDisplay":"11 Hours 00 Mins 41 Secs","nightLengthDisplay":"12 Hours 59 Mins 19 Secs","moonriseLocal":"05:14","moonsetLocal":"15:29","rahuKala":{"name":"Rāhu Kāla","start":"08:13","end":"09:35","startHours":8.209282747235576,"endHours":9.585697284568818,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:58","end":"12:20","startHours":10.96211182190206,"endHours":12.3385263592353,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:43","end":"15:05","startHours":13.714940896568539,"endHours":15.09135543390178,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:46","startHours":9.40217534625772,"endHours":9.769219222879917,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:18","end":"07:35","startHours":7.291673055680084,"endHours":7.585308156977842,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.971482482613101,"endHours":12.705570235857497,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:22","end":"06:06","startHours":5.364692703413547,"endHours":6.098780456657941,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:55","end":"06:50","startHours":5.915258518346843,"endHours":6.832868209902337,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.173745742346288,"endHours":14.907833495590683,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:39","end":"18:03","startHours":17.644184508568262,"endHours":18.04418450856826,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:51","end":"18:18","startHours":17.84418450856826,"endHours":18.302989354346007,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:36","end":"19:21","startHours":17.59418450856826,"endHours":19.34418450856826,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.9714824826131,"endHours":24.705570235857497,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:50","end":"08:13","startHours":6.832868209902337,"endHours":8.209282747235576,"quality":"auspicious"},{"name":"Kāla","start":"08:13","end":"09:35","startHours":8.209282747235576,"endHours":9.585697284568818,"quality":"inauspicious"},{"name":"Śubha","start":"09:35","end":"10:58","startHours":9.585697284568818,"endHours":10.96211182190206,"quality":"auspicious"},{"name":"Roga","start":"10:58","end":"12:20","startHours":10.96211182190206,"endHours":12.3385263592353,"quality":"inauspicious"},{"name":"Udveg","start":"12:20","end":"13:43","startHours":12.3385263592353,"endHours":13.714940896568539,"quality":"inauspicious"},{"name":"Chala","start":"13:43","end":"15:05","startHours":13.714940896568539,"endHours":15.09135543390178,"quality":"neutral"},{"name":"Labha","start":"15:05","end":"16:28","startHours":15.09135543390178,"endHours":16.467769971235022,"quality":"auspicious"},{"name":"Amṛta","start":"16:28","end":"17:51","startHours":16.467769971235022,"endHours":17.84418450856826,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:51","end":"19:28","startHours":17.84418450856826,"endHours":19.467769971235022,"quality":"neutral"},{"name":"Labha","start":"19:28","end":"21:05","startHours":19.467769971235022,"endHours":21.091355433901782,"quality":"auspicious"},{"name":"Amṛta","start":"21:05","end":"22:43","startHours":21.091355433901782,"endHours":22.71494089656854,"quality":"auspicious"},{"name":"Kāla","start":"22:43","end":"00:20","startHours":22.71494089656854,"endHours":24.3385263592353,"quality":"inauspicious"},{"name":"Śubha","start":"00:20","end":"01:58","startHours":24.3385263592353,"endHours":25.96211182190206,"quality":"auspicious"},{"name":"Roga","start":"01:58","end":"03:35","startHours":25.96211182190206,"endHours":27.585697284568816,"quality":"inauspicious"},{"name":"Udveg","start":"03:35","end":"05:13","startHours":27.585697284568816,"endHours":29.209282747235576,"quality":"inauspicious"},{"name":"Chala","start":"05:13","end":"06:50","startHours":29.209282747235576,"endHours":30.832868209902337,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.832868209902337,"endHours":7.832868209902337,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.832868209902337,"endHours":8.832868209902337,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.832868209902337,"endHours":9.832868209902337,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.832868209902337,"endHours":10.832868209902337,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.832868209902337,"endHours":11.832868209902337,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.832868209902337,"endHours":12.832868209902337,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.832868209902337,"endHours":13.832868209902337,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.832868209902337,"endHours":14.832868209902337,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.832868209902337,"endHours":15.832868209902337,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.832868209902337,"endHours":16.832868209902337,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.832868209902337,"endHours":17.832868209902337,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.832868209902337,"endHours":18.832868209902337,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.832868209902337,"endHours":19.832868209902337,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.832868209902337,"endHours":20.832868209902337,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.832868209902337,"endHours":21.832868209902337,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.832868209902337,"endHours":22.832868209902337,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.832868209902337,"endHours":23.832868209902337,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.832868209902337,"endHours":24.832868209902337,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.832868209902337,"endHours":25.832868209902337,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.832868209902337,"endHours":26.832868209902337,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.832868209902337,"endHours":27.832868209902337,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.832868209902337,"endHours":28.832868209902337,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.832868209902337,"endHours":29.832868209902337,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.832868209902337,"endHours":30.832868209902337,"planetary_lord":"Venus"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.232941208813886,"eotMinutes":-3.7535815541179196,"ayanamsa":26.2645}},"calendars":{"vikram_samvat":2229,"vikram_samvatsara":"Pārthiva","saka_samvat":2094,"saka_samvatsara":"Aṅgirasa","bengali_samvat":1579,"malayalam_era":1348,"nanakshahi_year":703,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Trayodaśī · Vikram 2229 Pārthiva · Śaka 2094 Aṅgirasa"},"festivals":[{"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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, 2172 CE · Perth, Australia · Vidhyamitra","description":"August 17, 2172 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 06:50, sūryāsta 17:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2172-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2172-08-17","sa":"https://sa.vidhyamitra.com/city/perth/2172-08-17","hi":"https://hi.vidhyamitra.com/city/perth/2172-08-17","x-default":"https://vidhyamitra.com/city/perth/2172-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T00:55:34.073Z","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":"2026-05-31T00:55:34.073Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T00:55:34.073Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}