{"id":"vidhyamitra:city-day:perth:2157-05-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2157-05-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2157-05-17","date_display":"May 17, 2157 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":2157,"month":5,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509024.770833,"kali_year":5259,"ahargana":1920559.2708,"sun":{"sidereal_longitude":30.0476,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":127.4923,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":97.4447,"elapsed_within_tithi_degrees":1.4447},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":127.4923,"elapsed_within_degrees":7.4923},"yoga":{"number":12,"name":"Dhruva","sum_longitude":157.5399},"karana":{"half_tithi_index":16,"name":"Bālava"},"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":2157,"month":5,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2509024.770833,"ahargana":1920559.2708,"kali_year":5259,"ayanamsa_lahiri":26.0514,"grahas":{"sun":{"sidereal_longitude":30.43446,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":129.47346,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false,"latitude":-0.6229},"mars":{"sidereal_longitude":186.33655999999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":19.701160000000016,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":98.31245999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"venus":{"sidereal_longitude":51.54915999999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":149.33956,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":299.5275,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":119.5275,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":2157,"month":5,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509024.770833,"kali_year":5259,"ahargana":1920559.2708,"sun":{"sidereal_longitude":30.0476,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":127.4923,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":97.4447,"elapsed_within_tithi_degrees":1.4447},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":127.4923,"elapsed_within_degrees":7.4923},"yoga":{"number":12,"name":"Dhruva","sum_longitude":157.5399},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.623,"elongation":97.445},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.623,"opposition_distance":82.555}},"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":"06:59","sunsetLocal":"17:26","solarNoonLocal":"12:13","dayLengthHours":10.453496228598226,"dayLengthDisplay":"10 Hours 27 Mins 13 Secs","nightLengthDisplay":"13 Hours 32 Mins 47 Secs","moonriseLocal":"13:10","moonsetLocal":"00:28","rahuKala":{"name":"Rāhu Kāla","start":"14:50","end":"16:08","startHours":14.827326063916004,"endHours":16.134013092490783,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:36","end":"10:54","startHours":9.600577949616891,"endHours":10.90726497819167,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:13","end":"13:31","startHours":12.213952006766448,"endHours":13.520639035341226,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:46","startHours":9.426353012473587,"endHours":9.774802886760195,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:25","end":"07:42","startHours":7.422766235325594,"endHours":7.70152613475488,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.86550213247984,"endHours":12.562401881053056,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:36","end":"06:17","startHours":5.5934043953209045,"endHours":6.29030414389412,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:07","end":"06:59","startHours":6.116079206750816,"endHours":6.987203892467335,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:57","end":"14:39","startHours":13.956201378199484,"endHours":14.653101126772698,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:14","end":"17:38","startHours":17.24070012106556,"endHours":17.64070012106556,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:26","end":"17:53","startHours":17.44070012106556,"endHours":17.87626246392382,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:11","end":"18:56","startHours":17.19070012106556,"endHours":18.94070012106556,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.86550213247984,"endHours":24.562401881053056,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:59","end":"08:18","startHours":6.987203892467335,"endHours":8.293890921042113,"quality":"inauspicious"},{"name":"Udveg","start":"08:18","end":"09:36","startHours":8.293890921042113,"endHours":9.600577949616891,"quality":"inauspicious"},{"name":"Chala","start":"09:36","end":"10:54","startHours":9.600577949616891,"endHours":10.90726497819167,"quality":"neutral"},{"name":"Labha","start":"10:54","end":"12:13","startHours":10.90726497819167,"endHours":12.213952006766448,"quality":"auspicious"},{"name":"Amṛta","start":"12:13","end":"13:31","startHours":12.213952006766448,"endHours":13.520639035341226,"quality":"auspicious"},{"name":"Kāla","start":"13:31","end":"14:50","startHours":13.520639035341226,"endHours":14.827326063916004,"quality":"inauspicious"},{"name":"Śubha","start":"14:50","end":"16:08","startHours":14.827326063916004,"endHours":16.134013092490783,"quality":"auspicious"},{"name":"Roga","start":"16:08","end":"17:26","startHours":16.134013092490783,"endHours":17.44070012106556,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:26","end":"19:08","startHours":17.44070012106556,"endHours":19.134013092490783,"quality":"inauspicious"},{"name":"Śubha","start":"19:08","end":"20:50","startHours":19.134013092490783,"endHours":20.827326063916004,"quality":"auspicious"},{"name":"Roga","start":"20:50","end":"22:31","startHours":20.827326063916004,"endHours":22.520639035341226,"quality":"inauspicious"},{"name":"Udveg","start":"22:31","end":"00:13","startHours":22.520639035341226,"endHours":24.213952006766448,"quality":"inauspicious"},{"name":"Chala","start":"00:13","end":"01:54","startHours":24.213952006766448,"endHours":25.90726497819167,"quality":"neutral"},{"name":"Labha","start":"01:54","end":"03:36","startHours":25.90726497819167,"endHours":27.60057794961689,"quality":"auspicious"},{"name":"Amṛta","start":"03:36","end":"05:18","startHours":27.60057794961689,"endHours":29.293890921042113,"quality":"auspicious"},{"name":"Kāla","start":"05:18","end":"06:59","startHours":29.293890921042113,"endHours":30.987203892467335,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:59","end":"07:59","startHours":6.987203892467335,"endHours":7.987203892467335,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:59","end":"08:59","startHours":7.987203892467335,"endHours":8.987203892467335,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:59","end":"09:59","startHours":8.987203892467335,"endHours":9.987203892467335,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:59","end":"10:59","startHours":9.987203892467335,"endHours":10.987203892467335,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:59","end":"11:59","startHours":10.987203892467335,"endHours":11.987203892467335,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:59","end":"12:59","startHours":11.987203892467335,"endHours":12.987203892467335,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:59","end":"13:59","startHours":12.987203892467335,"endHours":13.987203892467335,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:59","end":"14:59","startHours":13.987203892467335,"endHours":14.987203892467335,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:59","end":"15:59","startHours":14.987203892467335,"endHours":15.987203892467335,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:59","end":"16:59","startHours":15.987203892467335,"endHours":16.987203892467335,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:59","end":"17:59","startHours":16.987203892467335,"endHours":17.987203892467335,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:59","end":"18:59","startHours":17.987203892467335,"endHours":18.987203892467335,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:59","end":"19:59","startHours":18.987203892467335,"endHours":19.987203892467335,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:59","end":"20:59","startHours":19.987203892467335,"endHours":20.987203892467335,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:59","end":"21:59","startHours":20.987203892467335,"endHours":21.987203892467335,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:59","end":"22:59","startHours":21.987203892467335,"endHours":22.987203892467335,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:59","end":"23:59","startHours":22.987203892467335,"endHours":23.987203892467335,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:59","end":"00:59","startHours":23.987203892467335,"endHours":24.987203892467335,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:59","end":"01:59","startHours":24.987203892467335,"endHours":25.987203892467335,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:59","end":"02:59","startHours":25.987203892467335,"endHours":26.987203892467335,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:59","end":"03:59","startHours":26.987203892467335,"endHours":27.987203892467335,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:59","end":"04:59","startHours":27.987203892467335,"endHours":28.987203892467335,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:59","end":"05:59","startHours":28.987203892467335,"endHours":29.987203892467335,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:59","end":"06:59","startHours":29.987203892467335,"endHours":30.987203892467335,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","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":"North (Uttara)","chandraVasa":"West","rahuVasa":"North","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.36648101992756,"eotMinutes":3.7208795940131294,"ayanamsa":26.0514}},"calendars":{"vikram_samvat":2214,"vikram_samvatsara":"Pramoda","saka_samvat":2079,"saka_samvatsara":"Piṅgala","bengali_samvat":1564,"malayalam_era":1333,"nanakshahi_year":688,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Navamī · Vikram 2214 Pramoda · Śaka 2079 Piṅgala"},"festivals":[{"id":"sita-navami","name":"Sītā Navamī","name_sanskrit":"सीता नवमी","tradition":"Vaishnava","associated_deity":"Sītā Devī (Lakṣmī as Bhū-suta)","significance":"Devī Sītā's manifestation in Mithilā; rāmāvatāra-kalatra.","vrata":true,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":2,"sources":["Vālmīki Rāmāyaṇa, Bāla-Kāṇḍa 66"]},{"id":"madhva-jayanti","name":"Madhvācārya Jayantī","name_sanskrit":"मध्वाचार्य जयन्ती","tradition":"Vaishnava","associated_deity":"Madhvācārya (Dvaita)","significance":"Birth of Madhvācārya; Dvaita-pratiṣṭhāpaka. Vaiśākha Śukla 9.","vrata":false,"detection":{"tithi_number":9,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":4},{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi_ingress":"Vṛṣabha"},"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":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","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 May 17, 2157 CE · Perth, Australia · Vidhyamitra","description":"May 17, 2157 CE for Perth, Australia: Śukla Navamī, sūryodaya 06:59, sūryāsta 17:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2157-05-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2157-05-17","sa":"https://sa.vidhyamitra.com/city/perth/2157-05-17","hi":"https://hi.vidhyamitra.com/city/perth/2157-05-17","x-default":"https://vidhyamitra.com/city/perth/2157-05-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:59:48.206Z","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":"2026-05-31T14:59:48.206Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:59:48.206Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}