{"id":"vidhyamitra:city-day:perth:2017-05-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2017-05-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-05-04","date_display":"May 4, 2017 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":2017,"month":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457877.770833,"kali_year":5119,"ahargana":1869412.2708,"sun":{"sidereal_longitude":19.6912,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":118.3045,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.6133,"elapsed_within_tithi_degrees":2.6133},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":118.3045,"elapsed_within_degrees":11.6379},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.9958},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2017,"month":5,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457877.770833,"ahargana":1869412.2708,"kali_year":5119,"ayanamsa_lahiri":24.0952,"grahas":{"sun":{"sidereal_longitude":19.686552000000006,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":121.05535199999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false,"latitude":-0.876},"mars":{"sidereal_longitude":44.34205199999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":359.957152,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":170.62655199999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":true},"venus":{"sidereal_longitude":338.456252,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":242.91775200000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":129.5416,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":309.5416,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":2017,"month":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457877.770833,"kali_year":5119,"ahargana":1869412.2708,"sun":{"sidereal_longitude":19.6912,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":118.3045,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":98.6133,"elapsed_within_tithi_degrees":2.6133},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":118.3045,"elapsed_within_degrees":11.6379},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.9958},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.876,"elongation":98.613},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.876,"opposition_distance":81.387}},"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":"17:36","solarNoonLocal":"12:13","dayLengthHours":10.76697549562517,"dayLengthDisplay":"10 Hours 46 Mins 01 Secs","nightLengthDisplay":"13 Hours 13 Mins 59 Secs","moonriseLocal":"13:29","moonsetLocal":"00:28","rahuKala":{"name":"Rāhu Kāla","start":"13:34","end":"14:55","startHours":13.567530976651813,"endHours":14.91340291360496,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:50","end":"08:11","startHours":6.838171291886082,"endHours":8.18404322883923,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:32","end":"10:53","startHours":9.529915165792374,"endHours":10.875787102745521,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:43","startHours":9.350465574198623,"endHours":9.709364757386128,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:17","end":"07:34","startHours":7.286795270870464,"endHours":7.573914617420469,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:35","startHours":11.862759856511163,"endHours":12.580558222886173,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:24","end":"06:07","startHours":5.40257455913606,"endHours":6.120372925511071,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:56","end":"06:50","startHours":5.940923333917318,"endHours":6.838171291886082,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:44","startHours":14.016154955636196,"endHours":14.733953322011207,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.405146787511253,"endHours":17.80514678751125,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:03","startHours":17.605146787511252,"endHours":18.053770766495635,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.355146787511252,"endHours":19.105146787511252,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:35","startHours":23.86275985651116,"endHours":24.580558222886175,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:50","end":"08:11","startHours":6.838171291886082,"endHours":8.18404322883923,"quality":"auspicious"},{"name":"Roga","start":"08:11","end":"09:32","startHours":8.18404322883923,"endHours":9.529915165792374,"quality":"inauspicious"},{"name":"Udveg","start":"09:32","end":"10:53","startHours":9.529915165792374,"endHours":10.875787102745521,"quality":"inauspicious"},{"name":"Chala","start":"10:53","end":"12:13","startHours":10.875787102745521,"endHours":12.221659039698668,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:34","startHours":12.221659039698668,"endHours":13.567530976651813,"quality":"auspicious"},{"name":"Amṛta","start":"13:34","end":"14:55","startHours":13.567530976651813,"endHours":14.91340291360496,"quality":"auspicious"},{"name":"Kāla","start":"14:55","end":"16:16","startHours":14.91340291360496,"endHours":16.259274850558107,"quality":"inauspicious"},{"name":"Śubha","start":"16:16","end":"17:36","startHours":16.259274850558107,"endHours":17.605146787511252,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:36","end":"19:16","startHours":17.605146787511252,"endHours":19.259274850558107,"quality":"auspicious"},{"name":"Kāla","start":"19:16","end":"20:55","startHours":19.259274850558107,"endHours":20.91340291360496,"quality":"inauspicious"},{"name":"Śubha","start":"20:55","end":"22:34","startHours":20.91340291360496,"endHours":22.567530976651813,"quality":"auspicious"},{"name":"Roga","start":"22:34","end":"00:13","startHours":22.567530976651813,"endHours":24.221659039698668,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:53","startHours":24.221659039698668,"endHours":25.87578710274552,"quality":"inauspicious"},{"name":"Chala","start":"01:53","end":"03:32","startHours":25.87578710274552,"endHours":27.529915165792374,"quality":"neutral"},{"name":"Labha","start":"03:32","end":"05:11","startHours":27.529915165792374,"endHours":29.18404322883923,"quality":"auspicious"},{"name":"Amṛta","start":"05:11","end":"06:50","startHours":29.18404322883923,"endHours":30.838171291886084,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.838171291886082,"endHours":7.838171291886082,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.838171291886082,"endHours":8.838171291886082,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.838171291886082,"endHours":9.838171291886082,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.838171291886082,"endHours":10.838171291886082,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.838171291886082,"endHours":11.838171291886082,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.838171291886082,"endHours":12.838171291886082,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.838171291886082,"endHours":13.838171291886082,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.838171291886082,"endHours":14.838171291886082,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.838171291886082,"endHours":15.838171291886082,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.838171291886082,"endHours":16.838171291886084,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.838171291886084,"endHours":17.838171291886084,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.838171291886084,"endHours":18.838171291886084,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.838171291886084,"endHours":19.838171291886084,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.838171291886084,"endHours":20.838171291886084,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.838171291886084,"endHours":21.838171291886084,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.838171291886084,"endHours":22.838171291886084,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.838171291886084,"endHours":23.838171291886084,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.838171291886084,"endHours":24.838171291886084,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.838171291886084,"endHours":25.838171291886084,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.838171291886084,"endHours":26.838171291886084,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.838171291886084,"endHours":27.838171291886084,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.838171291886084,"endHours":28.838171291886084,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.838171291886084,"endHours":29.838171291886084,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.838171291886084,"endHours":30.838171291886084,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","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":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":15.973716668690889,"eotMinutes":3.258457618079846,"ayanamsa":24.0952}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Navamī · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"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":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"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}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 4, 2017 CE · Perth, Australia · Vidhyamitra","description":"May 4, 2017 CE for Perth, Australia: Śukla Navamī, sūryodaya 06:50, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2017-05-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2017-05-04","sa":"https://sa.vidhyamitra.com/city/perth/2017-05-04","hi":"https://hi.vidhyamitra.com/city/perth/2017-05-04","x-default":"https://vidhyamitra.com/city/perth/2017-05-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T06:58:04.619Z","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":"2026-05-15T06:58:04.619Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T06:58:04.619Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}