{"id":"vidhyamitra:city-day:perth:2025-05-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2025-05-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-05-04","date_display":"May 4, 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":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460799.770833,"kali_year":5127,"ahargana":1872334.2708,"sun":{"sidereal_longitude":19.6237,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":100.1053,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":80.4816,"elapsed_within_tithi_degrees":8.4816},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":100.1053,"elapsed_within_degrees":6.7719},"yoga":{"number":9,"name":"Śūla","sum_longitude":119.729},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460799.770833,"ahargana":1872334.2708,"kali_year":5127,"ayanamsa_lahiri":24.207,"grahas":{"sun":{"sidereal_longitude":19.637209999999982,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":103.19480999999996,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false,"latitude":3.6675},"mars":{"sidereal_longitude":102.39481,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":355.11201,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":57.71571,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":337.41291,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":334.03601000000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":334.72,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":154.72,"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":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460799.770833,"kali_year":5127,"ahargana":1872334.2708,"sun":{"sidereal_longitude":19.6237,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":100.1053,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":80.4816,"elapsed_within_tithi_degrees":8.4816},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":100.1053,"elapsed_within_degrees":6.7719},"yoga":{"number":9,"name":"Śūla","sum_longitude":119.729},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.667,"elongation":80.482},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.667,"opposition_distance":99.518}},"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":10.765288451028349,"dayLengthDisplay":"10 Hours 45 Mins 55 Secs","nightLengthDisplay":"13 Hours 14 Mins 05 Secs","moonriseLocal":"12:33","moonsetLocal":"23:03","rahuKala":{"name":"Rāhu Kāla","start":"16:16","end":"17:36","startHours":16.258642208834296,"endHours":17.60430326521284,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:34","startHours":12.221659039698668,"endHours":13.56732009607721,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:55","end":"16:16","startHours":14.912981152455755,"endHours":16.258642208834296,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:43","startHours":9.350915452757775,"endHours":9.709758401125386,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:17","end":"07:34","startHours":7.287568499644007,"endHours":7.5746428583380965,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:35","startHours":11.862816091331057,"endHours":12.58050198806628,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:24","end":"06:07","startHours":5.403643020714046,"endHours":6.1213289174492695,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:57","end":"06:50","startHours":5.941907443265464,"endHours":6.839014814184493,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:44","startHours":14.015873781536726,"endHours":14.733559678271948,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.404303265212842,"endHours":17.80430326521284,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:03","startHours":17.60430326521284,"endHours":18.052856950672357,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.35430326521284,"endHours":19.10430326521284,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:35","startHours":23.862816091331055,"endHours":24.58050198806628,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:50","end":"08:11","startHours":6.839014814184493,"endHours":8.184675870563037,"quality":"inauspicious"},{"name":"Chala","start":"08:11","end":"09:32","startHours":8.184675870563037,"endHours":9.53033692694158,"quality":"neutral"},{"name":"Labha","start":"09:32","end":"10:53","startHours":9.53033692694158,"endHours":10.875997983320124,"quality":"auspicious"},{"name":"Amṛta","start":"10:53","end":"12:13","startHours":10.875997983320124,"endHours":12.221659039698668,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:34","startHours":12.221659039698668,"endHours":13.56732009607721,"quality":"inauspicious"},{"name":"Śubha","start":"13:34","end":"14:55","startHours":13.56732009607721,"endHours":14.912981152455755,"quality":"auspicious"},{"name":"Roga","start":"14:55","end":"16:16","startHours":14.912981152455755,"endHours":16.258642208834296,"quality":"inauspicious"},{"name":"Udveg","start":"16:16","end":"17:36","startHours":16.258642208834296,"endHours":17.60430326521284,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:36","end":"19:16","startHours":17.60430326521284,"endHours":19.2586422088343,"quality":"auspicious"},{"name":"Roga","start":"19:16","end":"20:55","startHours":19.2586422088343,"endHours":20.912981152455753,"quality":"inauspicious"},{"name":"Udveg","start":"20:55","end":"22:34","startHours":20.912981152455753,"endHours":22.56732009607721,"quality":"inauspicious"},{"name":"Chala","start":"22:34","end":"00:13","startHours":22.56732009607721,"endHours":24.221659039698668,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:53","startHours":24.221659039698668,"endHours":25.875997983320126,"quality":"auspicious"},{"name":"Amṛta","start":"01:53","end":"03:32","startHours":25.875997983320126,"endHours":27.53033692694158,"quality":"auspicious"},{"name":"Kāla","start":"03:32","end":"05:11","startHours":27.53033692694158,"endHours":29.184675870563037,"quality":"inauspicious"},{"name":"Śubha","start":"05:11","end":"06:50","startHours":29.184675870563037,"endHours":30.839014814184495,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.839014814184493,"endHours":7.839014814184493,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.839014814184493,"endHours":8.839014814184493,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.839014814184493,"endHours":9.839014814184493,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.839014814184493,"endHours":10.839014814184493,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.839014814184493,"endHours":11.839014814184493,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.839014814184493,"endHours":12.839014814184493,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.839014814184493,"endHours":13.839014814184493,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.839014814184493,"endHours":14.839014814184493,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.839014814184493,"endHours":15.839014814184493,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.839014814184493,"endHours":16.839014814184495,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.839014814184495,"endHours":17.839014814184495,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.839014814184495,"endHours":18.839014814184495,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.839014814184495,"endHours":19.839014814184495,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.839014814184495,"endHours":20.839014814184495,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.839014814184495,"endHours":21.839014814184495,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.839014814184495,"endHours":22.839014814184495,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.839014814184495,"endHours":23.839014814184495,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.839014814184495,"endHours":24.839014814184495,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.839014814184495,"endHours":25.839014814184495,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.839014814184495,"endHours":26.839014814184495,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.839014814184495,"endHours":27.839014814184495,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.839014814184495,"endHours":28.839014814184495,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.839014814184495,"endHours":29.839014814184495,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.839014814184495,"endHours":30.839014814184495,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"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":15.992363248370733,"eotMinutes":3.258457618079846,"ayanamsa":24.207}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Saptamī · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"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":"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":"ganga-saptami","name":"Gaṅgā Saptamī","name_sanskrit":"गङ्गा सप्तमी","tradition":"Pan-Hindu","associated_deity":"Devī Gaṅgā","significance":"Gaṅgā Devī's descent to Brahma-loka before her earth-descent.","vrata":true,"detection":{"tithi_number":7,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":4}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 4, 2025 CE · Perth, Australia · Vidhyamitra","description":"May 4, 2025 CE for Perth, Australia: Śukla Saptamī, sūryodaya 06:50, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2025-05-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2025-05-04","sa":"https://sa.vidhyamitra.com/city/perth/2025-05-04","hi":"https://hi.vidhyamitra.com/city/perth/2025-05-04","x-default":"https://vidhyamitra.com/city/perth/2025-05-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T16:27:47.072Z","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":"2026-05-14T16:27:47.072Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T16:27:47.072Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}