{"id":"vidhyamitra:city-day:perth:2143-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2143-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2143-05-13","date_display":"May 13, 2143 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":2143,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2503906.770833,"kali_year":5245,"ahargana":1915441.2708,"sun":{"sidereal_longitude":25.8471,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":3.3876,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":337.5405,"elapsed_within_tithi_degrees":1.5405},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":3.3876,"elapsed_within_degrees":3.3876},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":29.2346},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2143,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2503906.770833,"ahargana":1915441.2708,"kali_year":5245,"ayanamsa_lahiri":25.8556,"grahas":{"sun":{"sidereal_longitude":26.174306,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":4.574206000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false,"latitude":2.0634},"mars":{"sidereal_longitude":45.44770599999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":0.5364059999999995,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":40.792006000000015,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":69.17480599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":335.802906,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":210.7037,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":30.7037,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"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":2143,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2503906.770833,"kali_year":5245,"ahargana":1915441.2708,"sun":{"sidereal_longitude":25.8471,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":3.3876,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":337.5405,"elapsed_within_tithi_degrees":1.5405},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":3.3876,"elapsed_within_degrees":3.3876},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":29.2346},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.063,"elongation":22.459},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.063,"opposition_distance":157.541}},"eclipse_window_40days":[{"offset_days":2,"type":"solar","occurs":true,"moon_latitude":0.102,"elongation":1.536}]},"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":"17:29","solarNoonLocal":"12:13","dayLengthHours":10.556049536243114,"dayLengthDisplay":"10 Hours 33 Mins 22 Secs","nightLengthDisplay":"13 Hours 26 Mins 38 Secs","moonriseLocal":"05:13","moonsetLocal":"16:20","rahuKala":{"name":"Rāhu Kāla","start":"08:15","end":"09:34","startHours":8.254890778182892,"endHours":9.574396970213282,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:54","end":"12:13","startHours":10.89390316224367,"endHours":12.21340935427406,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:32","end":"14:51","startHours":13.53291554630445,"endHours":14.852421738334838,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.398462811275897,"endHours":9.750331129150666,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:23","end":"07:39","startHours":7.375219983495967,"endHours":7.656714637795783,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.86154103639929,"endHours":12.565277672148829,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:14","startHours":5.527911314653421,"endHours":6.231647950402962,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:03","end":"06:56","startHours":6.055713791465577,"endHours":6.935384586152503,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:41","startHours":13.972750943647913,"endHours":14.676487579397454,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:17","end":"17:41","startHours":17.291434122395618,"endHours":17.691434122395616,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:29","end":"17:56","startHours":17.491434122395617,"endHours":17.93126951973908,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:14","end":"18:59","startHours":17.241434122395617,"endHours":18.991434122395617,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.861541036399288,"endHours":24.56527767214883,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:56","end":"08:15","startHours":6.935384586152503,"endHours":8.254890778182892,"quality":"auspicious"},{"name":"Kāla","start":"08:15","end":"09:34","startHours":8.254890778182892,"endHours":9.574396970213282,"quality":"inauspicious"},{"name":"Śubha","start":"09:34","end":"10:54","startHours":9.574396970213282,"endHours":10.89390316224367,"quality":"auspicious"},{"name":"Roga","start":"10:54","end":"12:13","startHours":10.89390316224367,"endHours":12.21340935427406,"quality":"inauspicious"},{"name":"Udveg","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.53291554630445,"quality":"inauspicious"},{"name":"Chala","start":"13:32","end":"14:51","startHours":13.53291554630445,"endHours":14.852421738334838,"quality":"neutral"},{"name":"Labha","start":"14:51","end":"16:10","startHours":14.852421738334838,"endHours":16.17192793036523,"quality":"auspicious"},{"name":"Amṛta","start":"16:10","end":"17:29","startHours":16.17192793036523,"endHours":17.491434122395617,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:29","end":"19:10","startHours":17.491434122395617,"endHours":19.17192793036523,"quality":"neutral"},{"name":"Labha","start":"19:10","end":"20:51","startHours":19.17192793036523,"endHours":20.85242173833484,"quality":"auspicious"},{"name":"Amṛta","start":"20:51","end":"22:32","startHours":20.85242173833484,"endHours":22.53291554630445,"quality":"auspicious"},{"name":"Kāla","start":"22:32","end":"00:13","startHours":22.53291554630445,"endHours":24.21340935427406,"quality":"inauspicious"},{"name":"Śubha","start":"00:13","end":"01:54","startHours":24.21340935427406,"endHours":25.89390316224367,"quality":"auspicious"},{"name":"Roga","start":"01:54","end":"03:34","startHours":25.89390316224367,"endHours":27.574396970213282,"quality":"inauspicious"},{"name":"Udveg","start":"03:34","end":"05:15","startHours":27.574396970213282,"endHours":29.25489077818289,"quality":"inauspicious"},{"name":"Chala","start":"05:15","end":"06:56","startHours":29.25489077818289,"endHours":30.9353845861525,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:56","end":"07:56","startHours":6.935384586152503,"endHours":7.935384586152503,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:56","end":"08:56","startHours":7.935384586152503,"endHours":8.935384586152503,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:56","end":"09:56","startHours":8.935384586152503,"endHours":9.935384586152503,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:56","end":"10:56","startHours":9.935384586152503,"endHours":10.935384586152503,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:56","end":"11:56","startHours":10.935384586152503,"endHours":11.935384586152503,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:56","end":"12:56","startHours":11.935384586152503,"endHours":12.935384586152503,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:56","end":"13:56","startHours":12.935384586152503,"endHours":13.935384586152503,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:56","end":"14:56","startHours":13.935384586152503,"endHours":14.935384586152503,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:56","end":"15:56","startHours":14.935384586152503,"endHours":15.935384586152503,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:56","end":"16:56","startHours":15.935384586152503,"endHours":16.9353845861525,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:56","end":"17:56","startHours":16.9353845861525,"endHours":17.9353845861525,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:56","end":"18:56","startHours":17.9353845861525,"endHours":18.9353845861525,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:56","end":"19:56","startHours":18.9353845861525,"endHours":19.9353845861525,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:56","end":"20:56","startHours":19.9353845861525,"endHours":20.9353845861525,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:56","end":"21:56","startHours":20.9353845861525,"endHours":21.9353845861525,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:56","end":"22:56","startHours":21.9353845861525,"endHours":22.9353845861525,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:56","end":"23:56","startHours":22.9353845861525,"endHours":23.9353845861525,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:56","end":"00:56","startHours":23.9353845861525,"endHours":24.9353845861525,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:56","end":"01:56","startHours":24.9353845861525,"endHours":25.9353845861525,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:56","end":"02:56","startHours":25.9353845861525,"endHours":26.9353845861525,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:56","end":"03:56","startHours":26.9353845861525,"endHours":27.9353845861525,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:56","end":"04:56","startHours":27.9353845861525,"endHours":28.9353845861525,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:56","end":"05:56","startHours":28.9353845861525,"endHours":29.9353845861525,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:56","end":"06:56","startHours":29.9353845861525,"endHours":30.9353845861525,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.27301267076571,"eotMinutes":3.7534387435564067,"ayanamsa":25.8556}},"calendars":{"vikram_samvat":2200,"vikram_samvatsara":"Nala","saka_samvat":2065,"saka_samvatsara":"Śobhana","bengali_samvat":1550,"malayalam_era":1319,"nanakshahi_year":674,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","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 Kṛṣṇa Caturdaśī · Vikram 2200 Nala · Śaka 2065 Śobhana"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 13, 2143 CE · Perth, Australia · Vidhyamitra","description":"May 13, 2143 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 06:56, sūryāsta 17:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2143-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2143-05-13","sa":"https://sa.vidhyamitra.com/city/perth/2143-05-13","hi":"https://hi.vidhyamitra.com/city/perth/2143-05-13","x-default":"https://vidhyamitra.com/city/perth/2143-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:31:52.474Z","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":"2026-06-01T08:31:52.474Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:31:52.474Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}