{"id":"vidhyamitra:city-day:perth:1883-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1883-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1883-05-13","date_display":"May 13, 1883 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":1883,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2408943.770833,"kali_year":4985,"ahargana":1820478.2708,"sun":{"sidereal_longitude":29.951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":107.3291,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":77.3781,"elapsed_within_tithi_degrees":5.3781},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1,"moon_longitude":107.3291,"elapsed_within_degrees":0.6624},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.2802},"karana":{"half_tithi_index":12,"name":"Gara"},"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":1883,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2408943.770833,"ahargana":1820478.2708,"kali_year":4985,"ayanamsa_lahiri":22.2237,"grahas":{"sun":{"sidereal_longitude":29.691591000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":109.19319100000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false,"latitude":-4.483},"mars":{"sidereal_longitude":356.475491,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":53.17909099999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":70.649091,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":357.369491,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":37.096091,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":202.3005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":22.3005,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1883,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2408943.770833,"kali_year":4985,"ahargana":1820478.2708,"sun":{"sidereal_longitude":29.951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":107.3291,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":77.3781,"elapsed_within_tithi_degrees":5.3781},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1,"moon_longitude":107.3291,"elapsed_within_degrees":0.6624},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.2802},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.483,"elongation":77.378},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.483,"opposition_distance":102.622}},"eclipse_window_40days":[{"offset_days":-6,"type":"solar","occurs":true,"moon_latitude":-0.321,"elongation":2.519},{"offset_days":9,"type":"lunar","occurs":true,"moon_latitude":1.233,"opposition_distance":0.814}]},"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":"06:56","sunsetLocal":"17:30","solarNoonLocal":"12:13","dayLengthHours":10.558801683382647,"dayLengthDisplay":"10 Hours 33 Mins 32 Secs","nightLengthDisplay":"13 Hours 26 Mins 28 Secs","moonriseLocal":"12:13","moonsetLocal":"22:49","rahuKala":{"name":"Rāhu Kāla","start":"16:10","end":"17:30","startHours":16.17295998554255,"endHours":17.492810195965383,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.533259564696891,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:51","end":"16:10","startHours":14.853109775119721,"endHours":16.17295998554255,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.39772890537202,"endHours":9.749688961484775,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:22","end":"07:39","startHours":7.373958582723679,"endHours":7.655526627613883,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.861449298161304,"endHours":12.565369410386815,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:14","startHours":5.526168288131716,"endHours":6.230088400357226,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:03","end":"06:56","startHours":6.054108372300848,"endHours":6.934008512582736,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:41","startHours":13.973209634837833,"endHours":14.677129747063342,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:18","end":"17:42","startHours":17.292810195965384,"endHours":17.692810195965382,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:30","end":"17:56","startHours":17.492810195965383,"endHours":17.932760266106328,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:15","end":"19:00","startHours":17.242810195965383,"endHours":18.992810195965383,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.861449298161304,"endHours":24.565369410386815,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:56","end":"08:15","startHours":6.934008512582736,"endHours":8.253858723005568,"quality":"inauspicious"},{"name":"Chala","start":"08:15","end":"09:34","startHours":8.253858723005568,"endHours":9.573708933428398,"quality":"neutral"},{"name":"Labha","start":"09:34","end":"10:54","startHours":9.573708933428398,"endHours":10.893559143851228,"quality":"auspicious"},{"name":"Amṛta","start":"10:54","end":"12:13","startHours":10.893559143851228,"endHours":12.21340935427406,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.533259564696891,"quality":"inauspicious"},{"name":"Śubha","start":"13:32","end":"14:51","startHours":13.533259564696891,"endHours":14.853109775119721,"quality":"auspicious"},{"name":"Roga","start":"14:51","end":"16:10","startHours":14.853109775119721,"endHours":16.17295998554255,"quality":"inauspicious"},{"name":"Udveg","start":"16:10","end":"17:30","startHours":16.17295998554255,"endHours":17.492810195965383,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:30","end":"19:10","startHours":17.492810195965383,"endHours":19.17295998554255,"quality":"auspicious"},{"name":"Roga","start":"19:10","end":"20:51","startHours":19.17295998554255,"endHours":20.85310977511972,"quality":"inauspicious"},{"name":"Udveg","start":"20:51","end":"22:32","startHours":20.85310977511972,"endHours":22.53325956469689,"quality":"inauspicious"},{"name":"Chala","start":"22:32","end":"00:13","startHours":22.53325956469689,"endHours":24.21340935427406,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:54","startHours":24.21340935427406,"endHours":25.893559143851228,"quality":"auspicious"},{"name":"Amṛta","start":"01:54","end":"03:34","startHours":25.893559143851228,"endHours":27.5737089334284,"quality":"auspicious"},{"name":"Kāla","start":"03:34","end":"05:15","startHours":27.5737089334284,"endHours":29.253858723005568,"quality":"inauspicious"},{"name":"Śubha","start":"05:15","end":"06:56","startHours":29.253858723005568,"endHours":30.934008512582736,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:56","end":"07:56","startHours":6.934008512582736,"endHours":7.934008512582736,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:56","end":"08:56","startHours":7.934008512582736,"endHours":8.934008512582736,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:56","end":"09:56","startHours":8.934008512582736,"endHours":9.934008512582736,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:56","end":"10:56","startHours":9.934008512582736,"endHours":10.934008512582736,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:56","end":"11:56","startHours":10.934008512582736,"endHours":11.934008512582736,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:56","end":"12:56","startHours":11.934008512582736,"endHours":12.934008512582736,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:56","end":"13:56","startHours":12.934008512582736,"endHours":13.934008512582736,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:56","end":"14:56","startHours":13.934008512582736,"endHours":14.934008512582736,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:56","end":"15:56","startHours":14.934008512582736,"endHours":15.934008512582736,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:56","end":"16:56","startHours":15.934008512582736,"endHours":16.934008512582736,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:56","end":"17:56","startHours":16.934008512582736,"endHours":17.934008512582736,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:56","end":"18:56","startHours":17.934008512582736,"endHours":18.934008512582736,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:56","end":"19:56","startHours":18.934008512582736,"endHours":19.934008512582736,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:56","end":"20:56","startHours":19.934008512582736,"endHours":20.934008512582736,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:56","end":"21:56","startHours":20.934008512582736,"endHours":21.934008512582736,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:56","end":"22:56","startHours":21.934008512582736,"endHours":22.934008512582736,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:56","end":"23:56","startHours":22.934008512582736,"endHours":23.934008512582736,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:56","end":"00:56","startHours":23.934008512582736,"endHours":24.934008512582736,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:56","end":"01:56","startHours":24.934008512582736,"endHours":25.934008512582736,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:56","end":"02:56","startHours":25.934008512582736,"endHours":26.934008512582736,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:56","end":"03:56","startHours":26.934008512582736,"endHours":27.934008512582736,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:56","end":"04:56","startHours":27.934008512582736,"endHours":28.934008512582736,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:56","end":"05:56","startHours":28.934008512582736,"endHours":29.934008512582736,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:56","end":"06:56","startHours":29.934008512582736,"endHours":30.934008512582736,"planetary_lord":"Jupiter"}],"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","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.243441082589992,"eotMinutes":3.7534387435564067,"ayanamsa":22.2237}},"calendars":{"vikram_samvat":1940,"vikram_samvatsara":"Durmukhi","saka_samvat":1805,"saka_samvatsara":"Subhānu","bengali_samvat":1290,"malayalam_era":1059,"nanakshahi_year":414,"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":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Saptamī · Vikram 1940 Durmukhi · Śaka 1805 Subhānu"},"festivals":[{"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},{"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":"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 13, 1883 CE · Perth, Australia · Vidhyamitra","description":"May 13, 1883 CE for Perth, Australia: Śukla Saptamī, sūryodaya 06:56, sūryāsta 17:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1883-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1883-05-13","sa":"https://sa.vidhyamitra.com/city/perth/1883-05-13","hi":"https://hi.vidhyamitra.com/city/perth/1883-05-13","x-default":"https://vidhyamitra.com/city/perth/1883-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T23:12:07.009Z","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":"2026-06-01T23:12:07.009Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T23:12:07.009Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}