{"id":"vidhyamitra:city-day:perth:2025-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2025-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-05-15","date_display":"May 15, 2025 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":2025,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460810.770833,"kali_year":5127,"ahargana":1872345.2708,"sun":{"sidereal_longitude":30.197,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":238.4425,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":208.2455,"elapsed_within_tithi_degrees":4.2455},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.4425,"elapsed_within_degrees":11.7758},"yoga":{"number":21,"name":"Siddha","sum_longitude":268.6395},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"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":2025,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460810.770833,"ahargana":1872345.2708,"kali_year":5127,"ayanamsa_lahiri":24.2074,"grahas":{"sun":{"sidereal_longitude":30.272490000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":236.12149,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false,"latitude":-4.4777},"mars":{"sidereal_longitude":107.70479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":13.221690000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":60.009990000000016,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":345.31239,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":335.05728999999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":334.1372,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":154.1372,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"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":2025,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460810.770833,"kali_year":5127,"ahargana":1872345.2708,"sun":{"sidereal_longitude":30.197,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":238.4425,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":208.2455,"elapsed_within_tithi_degrees":4.2455},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.4425,"elapsed_within_degrees":11.7758},"yoga":{"number":21,"name":"Siddha","sum_longitude":268.6395},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.478,"elongation":151.754},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.478,"opposition_distance":28.246}},"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":"06:58","sunsetLocal":"17:28","solarNoonLocal":"12:13","dayLengthHours":10.498564399929478,"dayLengthDisplay":"10 Hours 29 Mins 55 Secs","nightLengthDisplay":"13 Hours 30 Mins 05 Secs","moonriseLocal":"18:51","moonsetLocal":"09:01","rahuKala":{"name":"Rāhu Kāla","start":"13:32","end":"14:50","startHours":13.52568386772575,"endHours":14.838004417716935,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:58","end":"08:17","startHours":6.964081117769826,"endHours":8.27640166776101,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:35","end":"10:54","startHours":9.588722217752196,"endHours":10.90104276774338,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:46","startHours":9.413746144420038,"endHours":9.763698291084353,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:24","end":"07:41","startHours":7.401521301100221,"endHours":7.681483018431674,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.863411171070249,"endHours":12.563315464398881,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:34","end":"06:16","startHours":5.564272531112563,"endHours":6.264176824441194,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"06:58","startHours":6.089200751109036,"endHours":6.964081117769826,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:40","startHours":13.963124051056145,"endHours":14.663028344384777,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.262645517699305,"endHours":17.662645517699303,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:54","startHours":17.462645517699304,"endHours":17.9000857010297,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.212645517699304,"endHours":18.962645517699304,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.86341117107025,"endHours":24.56331546439888,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:58","end":"08:17","startHours":6.964081117769826,"endHours":8.27640166776101,"quality":"auspicious"},{"name":"Roga","start":"08:17","end":"09:35","startHours":8.27640166776101,"endHours":9.588722217752196,"quality":"inauspicious"},{"name":"Udveg","start":"09:35","end":"10:54","startHours":9.588722217752196,"endHours":10.90104276774338,"quality":"inauspicious"},{"name":"Chala","start":"10:54","end":"12:13","startHours":10.90104276774338,"endHours":12.213363317734565,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:32","startHours":12.213363317734565,"endHours":13.52568386772575,"quality":"auspicious"},{"name":"Amṛta","start":"13:32","end":"14:50","startHours":13.52568386772575,"endHours":14.838004417716935,"quality":"auspicious"},{"name":"Kāla","start":"14:50","end":"16:09","startHours":14.838004417716935,"endHours":16.15032496770812,"quality":"inauspicious"},{"name":"Śubha","start":"16:09","end":"17:28","startHours":16.15032496770812,"endHours":17.462645517699304,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:28","end":"19:09","startHours":17.462645517699304,"endHours":19.15032496770812,"quality":"auspicious"},{"name":"Kāla","start":"19:09","end":"20:50","startHours":19.15032496770812,"endHours":20.838004417716935,"quality":"inauspicious"},{"name":"Śubha","start":"20:50","end":"22:32","startHours":20.838004417716935,"endHours":22.52568386772575,"quality":"auspicious"},{"name":"Roga","start":"22:32","end":"00:13","startHours":22.52568386772575,"endHours":24.213363317734565,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:54","startHours":24.213363317734565,"endHours":25.90104276774338,"quality":"inauspicious"},{"name":"Chala","start":"01:54","end":"03:35","startHours":25.90104276774338,"endHours":27.588722217752196,"quality":"neutral"},{"name":"Labha","start":"03:35","end":"05:17","startHours":27.588722217752196,"endHours":29.27640166776101,"quality":"auspicious"},{"name":"Amṛta","start":"05:17","end":"06:58","startHours":29.27640166776101,"endHours":30.964081117769826,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:58","end":"07:58","startHours":6.964081117769826,"endHours":7.964081117769826,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:58","end":"08:58","startHours":7.964081117769826,"endHours":8.964081117769826,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:58","end":"09:58","startHours":8.964081117769826,"endHours":9.964081117769826,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:58","end":"10:58","startHours":9.964081117769826,"endHours":10.964081117769826,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:58","end":"11:58","startHours":10.964081117769826,"endHours":11.964081117769826,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:58","end":"12:58","startHours":11.964081117769826,"endHours":12.964081117769826,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:58","end":"13:58","startHours":12.964081117769826,"endHours":13.964081117769826,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:58","end":"14:58","startHours":13.964081117769826,"endHours":14.964081117769826,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:58","end":"15:58","startHours":14.964081117769826,"endHours":15.964081117769826,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:58","end":"16:58","startHours":15.964081117769826,"endHours":16.964081117769826,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:58","end":"17:58","startHours":16.964081117769826,"endHours":17.964081117769826,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:58","end":"18:58","startHours":17.964081117769826,"endHours":18.964081117769826,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:58","end":"19:58","startHours":18.964081117769826,"endHours":19.964081117769826,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:58","end":"20:58","startHours":19.964081117769826,"endHours":20.964081117769826,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:58","end":"21:58","startHours":20.964081117769826,"endHours":21.964081117769826,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:58","end":"22:58","startHours":21.964081117769826,"endHours":22.964081117769826,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:58","end":"23:58","startHours":22.964081117769826,"endHours":23.964081117769826,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:58","end":"00:58","startHours":23.964081117769826,"endHours":24.964081117769826,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:58","end":"01:58","startHours":24.964081117769826,"endHours":25.964081117769826,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:58","end":"02:58","startHours":25.964081117769826,"endHours":26.964081117769826,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:58","end":"03:58","startHours":26.964081117769826,"endHours":27.964081117769826,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:58","end":"04:58","startHours":27.964081117769826,"endHours":28.964081117769826,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:58","end":"05:58","startHours":28.964081117769826,"endHours":29.964081117769826,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:58","end":"06:58","startHours":29.964081117769826,"endHours":30.964081117769826,"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":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North-East","rahuVasa":"North-West","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":18.887989111668915,"eotMinutes":3.7562009359260493,"ayanamsa":24.2074}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Tṛtīyā · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","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 15, 2025 CE · Perth, Australia · Vidhyamitra","description":"May 15, 2025 CE for Perth, Australia: Kṛṣṇa Tṛtīyā, sūryodaya 06:58, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2025-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2025-05-15","sa":"https://sa.vidhyamitra.com/city/perth/2025-05-15","hi":"https://hi.vidhyamitra.com/city/perth/2025-05-15","x-default":"https://vidhyamitra.com/city/perth/2025-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T12:02:35.797Z","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":"2026-05-14T12:02:35.797Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T12:02:35.797Z","pillar_versions":{"BOB-History":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}