{"id":"vidhyamitra:city-day:perth:2117-09-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2117-09-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2117-09-13","date_display":"September 13, 2117 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":2117,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2494533.770833,"kali_year":5219,"ahargana":1906068.2708,"sun":{"sidereal_longitude":143.7697,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":348.5259,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":204.7562,"elapsed_within_tithi_degrees":0.7562},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.5259,"elapsed_within_degrees":1.8592},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.2956},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"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":2117,"month":9,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2494533.770833,"ahargana":1906068.2708,"kali_year":5219,"ayanamsa_lahiri":25.4972,"grahas":{"sun":{"sidereal_longitude":144.773823,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":346.549923,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":0.0938},"mars":{"sidereal_longitude":159.92472299999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":140.500223,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":343.960623,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":188.72482300000001,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":25.200623000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":347.3304,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":167.3304,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":2117,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2494533.770833,"kali_year":5219,"ahargana":1906068.2708,"sun":{"sidereal_longitude":143.7697,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":348.5259,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":204.7562,"elapsed_within_tithi_degrees":0.7562},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.5259,"elapsed_within_degrees":1.8592},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.2956},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.094,"elongation":155.244},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.094,"opposition_distance":24.756}},"eclipse_window_40days":[{"offset_days":13,"type":"solar","occurs":true,"moon_latitude":0.843,"elongation":0.591}]},"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":"06:17","sunsetLocal":"18:06","solarNoonLocal":"12:12","dayLengthHours":11.810213627861767,"dayLengthDisplay":"11 Hours 48 Mins 37 Secs","nightLengthDisplay":"12 Hours 11 Mins 23 Secs","moonriseLocal":"19:48","moonsetLocal":"07:30","rahuKala":{"name":"Rāhu Kāla","start":"07:46","end":"09:15","startHours":7.76790537405407,"endHours":9.244182077536792,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:43","end":"12:12","startHours":10.720458781019513,"endHours":12.196735484502234,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:40","end":"15:09","startHours":13.673012187984956,"endHours":15.149288891467673,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:26","startHours":9.047345183739095,"endHours":9.441018971334488,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:47","end":"07:06","startHours":6.78372090506559,"endHours":7.098659935141904,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:35","startHours":11.80306169690684,"endHours":12.590409272097626,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:43","end":"05:30","startHours":4.716933520189781,"endHours":5.504281095380565,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:18","end":"06:17","startHours":5.307444201582869,"endHours":6.29162867057135,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:57","startHours":14.165104422479194,"endHours":14.952451997669979,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.901842298433117,"endHours":18.301842298433115,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:36","startHours":18.101842298433116,"endHours":18.593934532927356,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.851842298433116,"endHours":19.601842298433116,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:35","startHours":23.80306169690684,"endHours":24.590409272097627,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:17","end":"07:46","startHours":6.29162867057135,"endHours":7.76790537405407,"quality":"auspicious"},{"name":"Kāla","start":"07:46","end":"09:15","startHours":7.76790537405407,"endHours":9.244182077536792,"quality":"inauspicious"},{"name":"Śubha","start":"09:15","end":"10:43","startHours":9.244182077536792,"endHours":10.720458781019513,"quality":"auspicious"},{"name":"Roga","start":"10:43","end":"12:12","startHours":10.720458781019513,"endHours":12.196735484502234,"quality":"inauspicious"},{"name":"Udveg","start":"12:12","end":"13:40","startHours":12.196735484502234,"endHours":13.673012187984956,"quality":"inauspicious"},{"name":"Chala","start":"13:40","end":"15:09","startHours":13.673012187984956,"endHours":15.149288891467673,"quality":"neutral"},{"name":"Labha","start":"15:09","end":"16:38","startHours":15.149288891467673,"endHours":16.625565594950395,"quality":"auspicious"},{"name":"Amṛta","start":"16:38","end":"18:06","startHours":16.625565594950395,"endHours":18.101842298433116,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:06","end":"19:38","startHours":18.101842298433116,"endHours":19.625565594950395,"quality":"neutral"},{"name":"Labha","start":"19:38","end":"21:09","startHours":19.625565594950395,"endHours":21.149288891467673,"quality":"auspicious"},{"name":"Amṛta","start":"21:09","end":"22:40","startHours":21.149288891467673,"endHours":22.673012187984952,"quality":"auspicious"},{"name":"Kāla","start":"22:40","end":"00:12","startHours":22.673012187984952,"endHours":24.196735484502234,"quality":"inauspicious"},{"name":"Śubha","start":"00:12","end":"01:43","startHours":24.196735484502234,"endHours":25.72045878101951,"quality":"auspicious"},{"name":"Roga","start":"01:43","end":"03:15","startHours":25.72045878101951,"endHours":27.24418207753679,"quality":"inauspicious"},{"name":"Udveg","start":"03:15","end":"04:46","startHours":27.24418207753679,"endHours":28.76790537405407,"quality":"inauspicious"},{"name":"Chala","start":"04:46","end":"06:17","startHours":28.76790537405407,"endHours":30.29162867057135,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:17","end":"07:17","startHours":6.29162867057135,"endHours":7.29162867057135,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:17","end":"08:17","startHours":7.29162867057135,"endHours":8.291628670571349,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:17","end":"09:17","startHours":8.291628670571349,"endHours":9.291628670571349,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:17","end":"10:17","startHours":9.291628670571349,"endHours":10.291628670571349,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:17","end":"11:17","startHours":10.291628670571349,"endHours":11.291628670571349,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:17","end":"12:17","startHours":11.291628670571349,"endHours":12.291628670571349,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:17","end":"13:17","startHours":12.291628670571349,"endHours":13.291628670571349,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:17","end":"14:17","startHours":13.291628670571349,"endHours":14.291628670571349,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:17","end":"15:17","startHours":14.291628670571349,"endHours":15.291628670571349,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:17","end":"16:17","startHours":15.291628670571349,"endHours":16.29162867057135,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:17","end":"17:17","startHours":16.29162867057135,"endHours":17.29162867057135,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:17","end":"18:17","startHours":17.29162867057135,"endHours":18.29162867057135,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:17","end":"19:17","startHours":18.29162867057135,"endHours":19.29162867057135,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:17","end":"20:17","startHours":19.29162867057135,"endHours":20.29162867057135,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:17","end":"21:17","startHours":20.29162867057135,"endHours":21.29162867057135,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:17","end":"22:17","startHours":21.29162867057135,"endHours":22.29162867057135,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:17","end":"23:17","startHours":22.29162867057135,"endHours":23.29162867057135,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:17","end":"00:17","startHours":23.29162867057135,"endHours":24.29162867057135,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:17","end":"01:17","startHours":24.29162867057135,"endHours":25.29162867057135,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:17","end":"02:17","startHours":25.29162867057135,"endHours":26.29162867057135,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:17","end":"03:17","startHours":26.29162867057135,"endHours":27.29162867057135,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:17","end":"04:17","startHours":27.29162867057135,"endHours":28.29162867057135,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:17","end":"05:17","startHours":28.29162867057135,"endHours":29.29162867057135,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:17","end":"06:17","startHours":29.29162867057135,"endHours":30.29162867057135,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":3.853867091259251,"eotMinutes":4.753870929866006,"ayanamsa":25.4972}},"calendars":{"vikram_samvat":2174,"vikram_samvatsara":"Vikṛti","saka_samvat":2039,"saka_samvatsara":"Īśvara","bengali_samvat":1524,"malayalam_era":1293,"nanakshahi_year":648,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Tṛtīyā · Vikram 2174 Vikṛti · Śaka 2039 Īśvara"},"festivals":[],"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":[]},"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 September 13, 2117 CE · Perth, Australia · Vidhyamitra","description":"September 13, 2117 CE for Perth, Australia: Kṛṣṇa Tṛtīyā, sūryodaya 06:17, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2117-09-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2117-09-13","sa":"https://sa.vidhyamitra.com/city/perth/2117-09-13","hi":"https://hi.vidhyamitra.com/city/perth/2117-09-13","x-default":"https://vidhyamitra.com/city/perth/2117-09-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T08:45:55.436Z","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":"2026-06-03T08:45:55.436Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T08:45:55.436Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}