{"id":"vidhyamitra:city-day:perth:2177-10-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2177-10-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2177-10-19","date_display":"October 19, 2177 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":2177,"month":10,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516484.770833,"kali_year":5279,"ahargana":1928019.2708,"sun":{"sidereal_longitude":178.5898,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":144.8953,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":326.3055,"elapsed_within_tithi_degrees":2.3055},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":144.8953,"elapsed_within_degrees":11.5619},"yoga":{"number":25,"name":"Brahma","sum_longitude":323.485},"karana":{"half_tithi_index":54,"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":2177,"month":10,"day":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2516484.770833,"ahargana":1928019.2708,"kali_year":5279,"ayanamsa_lahiri":26.3367,"grahas":{"sun":{"sidereal_longitude":179.75163399999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":144.674034,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":-3.9208},"mars":{"sidereal_longitude":163.27023400000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":202.146434,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":7.316034000000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"venus":{"sidereal_longitude":169.19643399999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":39.090134000000035,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":264.2608,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":84.2608,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":2177,"month":10,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516484.770833,"kali_year":5279,"ahargana":1928019.2708,"sun":{"sidereal_longitude":178.5898,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":144.8953,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":326.3055,"elapsed_within_tithi_degrees":2.3055},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":144.8953,"elapsed_within_degrees":11.5619},"yoga":{"number":25,"name":"Brahma","sum_longitude":323.485},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.921,"elongation":33.694},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.921,"opposition_distance":146.306}},"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":"05:32","sunsetLocal":"18:30","solarNoonLocal":"12:01","dayLengthHours":12.98202323236572,"dayLengthDisplay":"12 Hours 58 Mins 55 Secs","nightLengthDisplay":"11 Hours 01 Mins 05 Secs","moonriseLocal":"03:47","moonsetLocal":"15:35","rahuKala":{"name":"Rāhu Kāla","start":"16:53","end":"18:30","startHours":16.88502179594283,"endHours":18.507774699988545,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:01","end":"13:38","startHours":12.016763083805685,"endHours":13.6395159878514,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:16","end":"16:53","startHours":15.262268891897115,"endHours":16.88502179594283,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:59","startHours":8.554890221841493,"endHours":8.987624329587018,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:25","startHours":6.066669102304731,"endHours":6.41285638850115,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.58402897606016,"endHours":12.44949719155121,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:48","end":"04:40","startHours":3.7948150366407303,"endHours":4.660283252131778,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:27","end":"05:32","startHours":4.443916198259016,"endHours":5.525751467622826,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:03","startHours":14.180433622533304,"endHours":15.045901838024351,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.307774699988546,"endHours":18.707774699988544,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:03","startHours":18.507774699988545,"endHours":19.04869233467045,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.257774699988545,"endHours":20.007774699988545,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.58402897606016,"endHours":24.44949719155121,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:32","end":"07:09","startHours":5.525751467622826,"endHours":7.148504371668541,"quality":"inauspicious"},{"name":"Chala","start":"07:09","end":"08:46","startHours":7.148504371668541,"endHours":8.771257275714255,"quality":"neutral"},{"name":"Labha","start":"08:46","end":"10:24","startHours":8.771257275714255,"endHours":10.39401017975997,"quality":"auspicious"},{"name":"Amṛta","start":"10:24","end":"12:01","startHours":10.39401017975997,"endHours":12.016763083805685,"quality":"auspicious"},{"name":"Kāla","start":"12:01","end":"13:38","startHours":12.016763083805685,"endHours":13.6395159878514,"quality":"inauspicious"},{"name":"Śubha","start":"13:38","end":"15:16","startHours":13.6395159878514,"endHours":15.262268891897115,"quality":"auspicious"},{"name":"Roga","start":"15:16","end":"16:53","startHours":15.262268891897115,"endHours":16.88502179594283,"quality":"inauspicious"},{"name":"Udveg","start":"16:53","end":"18:30","startHours":16.88502179594283,"endHours":18.507774699988545,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:30","end":"19:53","startHours":18.507774699988545,"endHours":19.88502179594283,"quality":"auspicious"},{"name":"Roga","start":"19:53","end":"21:16","startHours":19.88502179594283,"endHours":21.262268891897115,"quality":"inauspicious"},{"name":"Udveg","start":"21:16","end":"22:38","startHours":21.262268891897115,"endHours":22.6395159878514,"quality":"inauspicious"},{"name":"Chala","start":"22:38","end":"00:01","startHours":22.6395159878514,"endHours":24.016763083805685,"quality":"neutral"},{"name":"Labha","start":"00:01","end":"01:24","startHours":24.016763083805685,"endHours":25.39401017975997,"quality":"auspicious"},{"name":"Amṛta","start":"01:24","end":"02:46","startHours":25.39401017975997,"endHours":26.771257275714255,"quality":"auspicious"},{"name":"Kāla","start":"02:46","end":"04:09","startHours":26.771257275714255,"endHours":28.14850437166854,"quality":"inauspicious"},{"name":"Śubha","start":"04:09","end":"05:32","startHours":28.14850437166854,"endHours":29.525751467622825,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:32","end":"06:32","startHours":5.525751467622826,"endHours":6.525751467622826,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:32","end":"07:32","startHours":6.525751467622826,"endHours":7.525751467622826,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:32","end":"08:32","startHours":7.525751467622826,"endHours":8.525751467622825,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:32","end":"09:32","startHours":8.525751467622825,"endHours":9.525751467622825,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:32","end":"10:32","startHours":9.525751467622825,"endHours":10.525751467622825,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:32","end":"11:32","startHours":10.525751467622825,"endHours":11.525751467622825,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:32","end":"12:32","startHours":11.525751467622825,"endHours":12.525751467622825,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:32","end":"13:32","startHours":12.525751467622825,"endHours":13.525751467622825,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:32","end":"14:32","startHours":13.525751467622825,"endHours":14.525751467622825,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:32","end":"15:32","startHours":14.525751467622825,"endHours":15.525751467622825,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:32","end":"16:32","startHours":15.525751467622825,"endHours":16.525751467622825,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:32","end":"17:32","startHours":16.525751467622825,"endHours":17.525751467622825,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:32","end":"18:32","startHours":17.525751467622825,"endHours":18.525751467622825,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:32","end":"19:32","startHours":18.525751467622825,"endHours":19.525751467622825,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:32","end":"20:32","startHours":19.525751467622825,"endHours":20.525751467622825,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:32","end":"21:32","startHours":20.525751467622825,"endHours":21.525751467622825,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:32","end":"22:32","startHours":21.525751467622825,"endHours":22.525751467622825,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:32","end":"23:32","startHours":22.525751467622825,"endHours":23.525751467622825,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:32","end":"00:32","startHours":23.525751467622825,"endHours":24.525751467622825,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:32","end":"01:32","startHours":24.525751467622825,"endHours":25.525751467622825,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:32","end":"02:32","startHours":25.525751467622825,"endHours":26.525751467622825,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:32","end":"03:32","startHours":26.525751467622825,"endHours":27.525751467622825,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:32","end":"04:32","startHours":27.525751467622825,"endHours":28.525751467622825,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:32","end":"05:32","startHours":28.525751467622825,"endHours":29.525751467622825,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","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":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.073150738890408,"eotMinutes":15.552214971658897,"ayanamsa":26.3367}},"calendars":{"vikram_samvat":2234,"vikram_samvatsara":"Vikṛti","saka_samvat":2099,"saka_samvatsara":"Īśvara","bengali_samvat":1584,"malayalam_era":1353,"nanakshahi_year":708,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Trayodaśī · Vikram 2234 Vikṛti · Śaka 2099 Īśvara"},"festivals":[{"id":"dhanteras","name":"Dhanteras (Dhanvantari Jayantī)","name_sanskrit":"धनतेरस / धन्वन्तरि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Dhanvantari (Āyurveda-deva, avatāra of Viṣṇu)","significance":"Birth of Dhanvantari from samudra-mathana with amṛta-kalaśa. Day 1 of Diwali.","vrata":true,"detection":{"tithi_number":28,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2,"sources":["Bhāgavata 8.8.32-34"]},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 October 19, 2177 CE · Perth, Australia · Vidhyamitra","description":"October 19, 2177 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 05:32, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2177-10-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2177-10-19","sa":"https://sa.vidhyamitra.com/city/perth/2177-10-19","hi":"https://hi.vidhyamitra.com/city/perth/2177-10-19","x-default":"https://vidhyamitra.com/city/perth/2177-10-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T10:25:43.637Z","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":"2026-06-02T10:25:43.637Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T10:25:43.637Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}