{"id":"vidhyamitra:city-day:perth:2015-05-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2015-05-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2015-05-20","date_display":"May 20, 2015 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":2015,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457162.770833,"kali_year":5117,"ahargana":1868697.2708,"sun":{"sidereal_longitude":34.5892,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":59.9469,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.3577,"elapsed_within_tithi_degrees":1.3577},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":59.9469,"elapsed_within_degrees":6.6136},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":94.5361},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2015,"month":5,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457162.770833,"ahargana":1868697.2708,"kali_year":5117,"ayanamsa_lahiri":24.0679,"grahas":{"sun":{"sidereal_longitude":34.67007000000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":58.65926999999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false,"latitude":-4.2918},"mars":{"sidereal_longitude":41.28226999999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":49.02217000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":110.26026999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":78.84557000000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":217.57686999999999,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":167.4258,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":347.4258,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":2015,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457162.770833,"kali_year":5117,"ahargana":1868697.2708,"sun":{"sidereal_longitude":34.5892,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":59.9469,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.3577,"elapsed_within_tithi_degrees":1.3577},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":59.9469,"elapsed_within_degrees":6.6136},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":94.5361},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.292,"elongation":25.358},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.292,"opposition_distance":154.642}},"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":"07:01","sunsetLocal":"17:25","solarNoonLocal":"12:13","dayLengthHours":10.405180099620695,"dayLengthDisplay":"10 Hours 24 Mins 19 Secs","nightLengthDisplay":"13 Hours 35 Mins 41 Secs","moonriseLocal":"08:48","moonsetLocal":"18:50","rahuKala":{"name":"Rāhu Kāla","start":"12:13","end":"13:31","startHours":12.215994783063579,"endHours":13.516642295516164,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:19","end":"09:37","startHours":8.314052245705817,"endHours":9.614699758158403,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:55","end":"12:13","startHours":10.91534727061099,"endHours":12.215994783063579,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:47","startHours":9.441280089831393,"endHours":9.788119426485416,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:27","end":"07:43","startHours":7.446953904070759,"endHours":7.724425373393978,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.869155446409556,"endHours":12.562834119717602,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:38","end":"06:19","startHours":5.626047386637137,"endHours":6.319726059945184,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:01","startHours":6.146306391618172,"endHours":7.01340473325323,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:57","end":"14:39","startHours":13.950191466333694,"endHours":14.64387013964174,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:13","end":"17:37","startHours":17.218584832873926,"endHours":17.618584832873925,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:25","end":"17:51","startHours":17.418584832873925,"endHours":17.852134003691454,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:10","end":"18:55","startHours":17.168584832873925,"endHours":18.918584832873925,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.869155446409554,"endHours":24.562834119717603,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:01","end":"08:19","startHours":7.01340473325323,"endHours":8.314052245705817,"quality":"auspicious"},{"name":"Amṛta","start":"08:19","end":"09:37","startHours":8.314052245705817,"endHours":9.614699758158403,"quality":"auspicious"},{"name":"Kāla","start":"09:37","end":"10:55","startHours":9.614699758158403,"endHours":10.91534727061099,"quality":"inauspicious"},{"name":"Śubha","start":"10:55","end":"12:13","startHours":10.91534727061099,"endHours":12.215994783063579,"quality":"auspicious"},{"name":"Roga","start":"12:13","end":"13:31","startHours":12.215994783063579,"endHours":13.516642295516164,"quality":"inauspicious"},{"name":"Udveg","start":"13:31","end":"14:49","startHours":13.516642295516164,"endHours":14.817289807968752,"quality":"inauspicious"},{"name":"Chala","start":"14:49","end":"16:07","startHours":14.817289807968752,"endHours":16.11793732042134,"quality":"neutral"},{"name":"Labha","start":"16:07","end":"17:25","startHours":16.11793732042134,"endHours":17.418584832873925,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:25","end":"19:07","startHours":17.418584832873925,"endHours":19.117937320421337,"quality":"inauspicious"},{"name":"Chala","start":"19:07","end":"20:49","startHours":19.117937320421337,"endHours":20.817289807968752,"quality":"neutral"},{"name":"Labha","start":"20:49","end":"22:31","startHours":20.817289807968752,"endHours":22.516642295516164,"quality":"auspicious"},{"name":"Amṛta","start":"22:31","end":"00:13","startHours":22.516642295516164,"endHours":24.21599478306358,"quality":"auspicious"},{"name":"Kāla","start":"00:13","end":"01:55","startHours":24.21599478306358,"endHours":25.91534727061099,"quality":"inauspicious"},{"name":"Śubha","start":"01:55","end":"03:37","startHours":25.91534727061099,"endHours":27.6146997581584,"quality":"auspicious"},{"name":"Roga","start":"03:37","end":"05:19","startHours":27.6146997581584,"endHours":29.314052245705817,"quality":"inauspicious"},{"name":"Udveg","start":"05:19","end":"07:01","startHours":29.314052245705817,"endHours":31.013404733253232,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.01340473325323,"endHours":8.01340473325323,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.01340473325323,"endHours":9.01340473325323,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.01340473325323,"endHours":10.01340473325323,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.01340473325323,"endHours":11.01340473325323,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.01340473325323,"endHours":12.01340473325323,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.01340473325323,"endHours":13.01340473325323,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.01340473325323,"endHours":14.01340473325323,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.01340473325323,"endHours":15.01340473325323,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.01340473325323,"endHours":16.013404733253232,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.013404733253232,"endHours":17.013404733253232,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.013404733253232,"endHours":18.013404733253232,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.013404733253232,"endHours":19.013404733253232,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.013404733253232,"endHours":20.013404733253232,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.013404733253232,"endHours":21.013404733253232,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.013404733253232,"endHours":22.013404733253232,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.013404733253232,"endHours":23.013404733253232,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.013404733253232,"endHours":24.013404733253232,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.013404733253232,"endHours":25.013404733253232,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.013404733253232,"endHours":26.013404733253232,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.013404733253232,"endHours":27.013404733253232,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.013404733253232,"endHours":28.013404733253232,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.013404733253232,"endHours":29.013404733253232,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.013404733253232,"endHours":30.013404733253232,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.013404733253232,"endHours":31.013404733253232,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.875830579987255,"eotMinutes":3.5983130161851964,"ayanamsa":24.0679}},"calendars":{"vikram_samvat":2072,"vikram_samvatsara":"Kīlaka","saka_samvat":1937,"saka_samvatsara":"Manmatha","bengali_samvat":1422,"malayalam_era":1191,"nanakshahi_year":546,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Jyeṣṭha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Tṛtīyā · Vikram 2072 Kīlaka · Śaka 1937 Manmatha"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 May 20, 2015 CE · Perth, Australia · Vidhyamitra","description":"May 20, 2015 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 07:01, sūryāsta 17:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2015-05-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2015-05-20","sa":"https://sa.vidhyamitra.com/city/perth/2015-05-20","hi":"https://hi.vidhyamitra.com/city/perth/2015-05-20","x-default":"https://vidhyamitra.com/city/perth/2015-05-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T11:27:12.774Z","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":"2026-05-31T11:27:12.774Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T11:27:12.774Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}