{"id":"vidhyamitra:city-day:perth:2106-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2106-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2106-05-13","date_display":"May 13, 2106 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":2106,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490392.770833,"kali_year":5208,"ahargana":1901927.2708,"sun":{"sidereal_longitude":26.3984,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":147.874,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":121.4756,"elapsed_within_tithi_degrees":1.4756},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.874,"elapsed_within_degrees":1.2073},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":174.2724},"karana":{"half_tithi_index":20,"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":2106,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2490392.770833,"ahargana":1901927.2708,"kali_year":5208,"ayanamsa_lahiri":25.3388,"grahas":{"sun":{"sidereal_longitude":26.64204000000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":149.72134,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":-3.8508},"mars":{"sidereal_longitude":124.37454000000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":41.05074000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":2.6918400000000133,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":60.694740000000024,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":249.27404,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":206.7405,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":26.7405,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2106,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490392.770833,"kali_year":5208,"ahargana":1901927.2708,"sun":{"sidereal_longitude":26.3984,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":147.874,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":121.4756,"elapsed_within_tithi_degrees":1.4756},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":147.874,"elapsed_within_degrees":1.2073},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":174.2724},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.851,"elongation":121.476},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.851,"opposition_distance":58.524}},"eclipse_window_40days":[{"offset_days":-9,"type":"solar","occurs":true,"moon_latitude":0.56,"elongation":2.334},{"offset_days":5,"type":"lunar","occurs":true,"moon_latitude":0.568,"opposition_distance":2.546},{"offset_days":20,"type":"solar","occurs":true,"moon_latitude":-1.402,"elongation":1.669}]},"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":10.557227042970077,"dayLengthDisplay":"10 Hours 33 Mins 26 Secs","nightLengthDisplay":"13 Hours 26 Mins 34 Secs","moonriseLocal":"14:27","moonsetLocal":"02:23","rahuKala":{"name":"Rāhu Kāla","start":"13:32","end":"14:51","startHours":13.533062734645318,"endHours":14.852716115016577,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:56","end":"08:15","startHours":6.93479583278902,"endHours":8.25444921316028,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:34","end":"10:54","startHours":9.574102593531538,"endHours":10.893755973902799,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.398148809482038,"endHours":9.750056377581041,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:22","end":"07:39","startHours":7.374680292912774,"endHours":7.656206347391976,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.861501786175056,"endHours":12.565316922373063,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:14","startHours":5.52716556039301,"endHours":6.230980696591015,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:03","end":"06:56","startHours":6.055026912541514,"endHours":6.93479583278902,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:41","startHours":13.97294719476907,"endHours":14.676762330967074,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:18","end":"17:42","startHours":17.2920228757591,"endHours":17.692022875759097,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:30","end":"17:56","startHours":17.492022875759098,"endHours":17.93190733588285,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:15","end":"19:00","startHours":17.242022875759098,"endHours":18.992022875759098,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.861501786175058,"endHours":24.56531692237306,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:56","end":"08:15","startHours":6.93479583278902,"endHours":8.25444921316028,"quality":"auspicious"},{"name":"Roga","start":"08:15","end":"09:34","startHours":8.25444921316028,"endHours":9.574102593531538,"quality":"inauspicious"},{"name":"Udveg","start":"09:34","end":"10:54","startHours":9.574102593531538,"endHours":10.893755973902799,"quality":"inauspicious"},{"name":"Chala","start":"10:54","end":"12:13","startHours":10.893755973902799,"endHours":12.21340935427406,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.533062734645318,"quality":"auspicious"},{"name":"Amṛta","start":"13:32","end":"14:51","startHours":13.533062734645318,"endHours":14.852716115016577,"quality":"auspicious"},{"name":"Kāla","start":"14:51","end":"16:10","startHours":14.852716115016577,"endHours":16.172369495387837,"quality":"inauspicious"},{"name":"Śubha","start":"16:10","end":"17:30","startHours":16.172369495387837,"endHours":17.492022875759098,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:30","end":"19:10","startHours":17.492022875759098,"endHours":19.172369495387837,"quality":"auspicious"},{"name":"Kāla","start":"19:10","end":"20:51","startHours":19.172369495387837,"endHours":20.852716115016577,"quality":"inauspicious"},{"name":"Śubha","start":"20:51","end":"22:32","startHours":20.852716115016577,"endHours":22.53306273464532,"quality":"auspicious"},{"name":"Roga","start":"22:32","end":"00:13","startHours":22.53306273464532,"endHours":24.21340935427406,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:54","startHours":24.21340935427406,"endHours":25.8937559739028,"quality":"inauspicious"},{"name":"Chala","start":"01:54","end":"03:34","startHours":25.8937559739028,"endHours":27.574102593531542,"quality":"neutral"},{"name":"Labha","start":"03:34","end":"05:15","startHours":27.574102593531542,"endHours":29.25444921316028,"quality":"auspicious"},{"name":"Amṛta","start":"05:15","end":"06:56","startHours":29.25444921316028,"endHours":30.93479583278902,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:56","end":"07:56","startHours":6.93479583278902,"endHours":7.93479583278902,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:56","end":"08:56","startHours":7.93479583278902,"endHours":8.934795832789021,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:56","end":"09:56","startHours":8.934795832789021,"endHours":9.934795832789021,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:56","end":"10:56","startHours":9.934795832789021,"endHours":10.934795832789021,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:56","end":"11:56","startHours":10.934795832789021,"endHours":11.934795832789021,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:56","end":"12:56","startHours":11.934795832789021,"endHours":12.934795832789021,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:56","end":"13:56","startHours":12.934795832789021,"endHours":13.934795832789021,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:56","end":"14:56","startHours":13.934795832789021,"endHours":14.934795832789021,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:56","end":"15:56","startHours":14.934795832789021,"endHours":15.934795832789021,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:56","end":"16:56","startHours":15.934795832789021,"endHours":16.93479583278902,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:56","end":"17:56","startHours":16.93479583278902,"endHours":17.93479583278902,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:56","end":"18:56","startHours":17.93479583278902,"endHours":18.93479583278902,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:56","end":"19:56","startHours":18.93479583278902,"endHours":19.93479583278902,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:56","end":"20:56","startHours":19.93479583278902,"endHours":20.93479583278902,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:56","end":"21:56","startHours":20.93479583278902,"endHours":21.93479583278902,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:56","end":"22:56","startHours":21.93479583278902,"endHours":22.93479583278902,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:56","end":"23:56","startHours":22.93479583278902,"endHours":23.93479583278902,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:56","end":"00:56","startHours":23.93479583278902,"endHours":24.93479583278902,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:56","end":"01:56","startHours":24.93479583278902,"endHours":25.93479583278902,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:56","end":"02:56","startHours":25.93479583278902,"endHours":26.93479583278902,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:56","end":"03:56","startHours":26.93479583278902,"endHours":27.93479583278902,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:56","end":"04:56","startHours":27.93479583278902,"endHours":28.93479583278902,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:56","end":"05:56","startHours":28.93479583278902,"endHours":29.93479583278902,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:56","end":"06:56","startHours":29.93479583278902,"endHours":30.93479583278902,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Dhātṛ","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":18.260361893280358,"eotMinutes":3.7534387435564067,"ayanamsa":25.3388}},"calendars":{"vikram_samvat":2163,"vikram_samvatsara":"Pramāthi","saka_samvat":2028,"saka_samvatsara":"Akṣaya","bengali_samvat":1513,"malayalam_era":1282,"nanakshahi_year":637,"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 Ekādaśī · Vikram 2163 Pramāthi · Śaka 2028 Akṣaya"},"festivals":[{"id":"mohini-ekadashi","name":"Mohinī Ekādaśī","name_sanskrit":"मोहिनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu (Mohinī form)","significance":"Mohinī-form of Viṣṇu deceived asuras during samudra-mathana for amṛta.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":3,"sources":["Bhāgavata 8.9"]},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"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":[]},"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, 2106 CE · Perth, Australia · Vidhyamitra","description":"May 13, 2106 CE for Perth, Australia: Śukla Ekādaśī, sūryodaya 06:56, sūryāsta 17:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2106-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2106-05-13","sa":"https://sa.vidhyamitra.com/city/perth/2106-05-13","hi":"https://hi.vidhyamitra.com/city/perth/2106-05-13","x-default":"https://vidhyamitra.com/city/perth/2106-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T11:52:31.526Z","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":"2026-06-01T11:52:31.526Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T11:52:31.526Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}