{"id":"vidhyamitra:city-day:perth:2129-09-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2129-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2129-09-18","date_display":"September 18, 2129 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":2129,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2498921.770833,"kali_year":5231,"ahargana":1910456.2708,"sun":{"sidereal_longitude":148.5242,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":200.4552,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.931,"elapsed_within_tithi_degrees":3.931},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":200.4552,"elapsed_within_degrees":0.4552},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":348.9793},"karana":{"half_tithi_index":8,"name":"Bava"},"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":2129,"month":9,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2498921.770833,"ahargana":1910456.2708,"kali_year":5231,"ayanamsa_lahiri":25.665,"grahas":{"sun":{"sidereal_longitude":149.569069,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":198.78956900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false,"latitude":4.4868},"mars":{"sidereal_longitude":293.9587690000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":132.749869,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":349.315269,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":127.96096899999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":174.173769,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":114.833,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":294.833,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2129,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2498921.770833,"kali_year":5231,"ahargana":1910456.2708,"sun":{"sidereal_longitude":148.5242,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":200.4552,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.931,"elapsed_within_tithi_degrees":3.931},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":200.4552,"elapsed_within_degrees":0.4552},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":348.9793},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.487,"elongation":51.931},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.487,"opposition_distance":128.069}},"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":"06:11","sunsetLocal":"18:09","solarNoonLocal":"12:10","dayLengthHours":11.973432014373904,"dayLengthDisplay":"11 Hours 58 Mins 24 Secs","nightLengthDisplay":"12 Hours 01 Mins 36 Secs","moonriseLocal":"08:42","moonsetLocal":"22:11","rahuKala":{"name":"Rāhu Kāla","start":"16:39","end":"18:09","startHours":16.655836635828976,"endHours":18.15251563762571,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:10","end":"13:40","startHours":12.165799630438759,"endHours":13.662478632235498,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:10","end":"16:39","startHours":15.159157634032235,"endHours":16.655836635828976,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:22","startHours":8.972884426605718,"endHours":9.371998827084848,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:41","end":"07:00","startHours":6.6779766238507206,"endHours":6.997268144234025,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:34","startHours":11.766685229959629,"endHours":12.564914030917889,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:35","end":"05:23","startHours":4.582626021335288,"endHours":5.380854822293547,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:11","end":"06:11","startHours":5.181297622053982,"endHours":6.179083623251808,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:58","startHours":14.16137163283441,"endHours":14.95960043379267,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:57","end":"18:21","startHours":17.952515637625712,"endHours":18.35251563762571,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:09","end":"18:39","startHours":18.15251563762571,"endHours":18.651408638224623,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:54","end":"19:39","startHours":17.90251563762571,"endHours":19.65251563762571,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:34","startHours":23.766685229959627,"endHours":24.56491403091789,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:11","end":"07:41","startHours":6.179083623251808,"endHours":7.675762625048546,"quality":"inauspicious"},{"name":"Chala","start":"07:41","end":"09:10","startHours":7.675762625048546,"endHours":9.172441626845284,"quality":"neutral"},{"name":"Labha","start":"09:10","end":"10:40","startHours":9.172441626845284,"endHours":10.669120628642021,"quality":"auspicious"},{"name":"Amṛta","start":"10:40","end":"12:10","startHours":10.669120628642021,"endHours":12.165799630438759,"quality":"auspicious"},{"name":"Kāla","start":"12:10","end":"13:40","startHours":12.165799630438759,"endHours":13.662478632235498,"quality":"inauspicious"},{"name":"Śubha","start":"13:40","end":"15:10","startHours":13.662478632235498,"endHours":15.159157634032235,"quality":"auspicious"},{"name":"Roga","start":"15:10","end":"16:39","startHours":15.159157634032235,"endHours":16.655836635828976,"quality":"inauspicious"},{"name":"Udveg","start":"16:39","end":"18:09","startHours":16.655836635828976,"endHours":18.15251563762571,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:09","end":"19:39","startHours":18.15251563762571,"endHours":19.655836635828972,"quality":"auspicious"},{"name":"Roga","start":"19:39","end":"21:10","startHours":19.655836635828972,"endHours":21.159157634032237,"quality":"inauspicious"},{"name":"Udveg","start":"21:10","end":"22:40","startHours":21.159157634032237,"endHours":22.662478632235498,"quality":"inauspicious"},{"name":"Chala","start":"22:40","end":"00:10","startHours":22.662478632235498,"endHours":24.16579963043876,"quality":"neutral"},{"name":"Labha","start":"00:10","end":"01:40","startHours":24.16579963043876,"endHours":25.66912062864202,"quality":"auspicious"},{"name":"Amṛta","start":"01:40","end":"03:10","startHours":25.66912062864202,"endHours":27.172441626845284,"quality":"auspicious"},{"name":"Kāla","start":"03:10","end":"04:41","startHours":27.172441626845284,"endHours":28.675762625048545,"quality":"inauspicious"},{"name":"Śubha","start":"04:41","end":"06:11","startHours":28.675762625048545,"endHours":30.179083623251806,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:11","end":"07:11","startHours":6.179083623251808,"endHours":7.179083623251808,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:11","end":"08:11","startHours":7.179083623251808,"endHours":8.179083623251808,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:11","end":"09:11","startHours":8.179083623251808,"endHours":9.179083623251808,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:11","end":"10:11","startHours":9.179083623251808,"endHours":10.179083623251808,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:11","end":"11:11","startHours":10.179083623251808,"endHours":11.179083623251808,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:11","end":"12:11","startHours":11.179083623251808,"endHours":12.179083623251808,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:11","end":"13:11","startHours":12.179083623251808,"endHours":13.179083623251808,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:11","end":"14:11","startHours":13.179083623251808,"endHours":14.179083623251808,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:11","end":"15:11","startHours":14.179083623251808,"endHours":15.179083623251808,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:11","end":"16:11","startHours":15.179083623251808,"endHours":16.179083623251806,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:11","end":"17:11","startHours":16.179083623251806,"endHours":17.179083623251806,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:11","end":"18:11","startHours":17.179083623251806,"endHours":18.179083623251806,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:11","end":"19:11","startHours":18.179083623251806,"endHours":19.179083623251806,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:11","end":"20:11","startHours":19.179083623251806,"endHours":20.179083623251806,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:11","end":"21:11","startHours":20.179083623251806,"endHours":21.179083623251806,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:11","end":"22:11","startHours":21.179083623251806,"endHours":22.179083623251806,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:11","end":"23:11","startHours":22.179083623251806,"endHours":23.179083623251806,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:11","end":"00:11","startHours":23.179083623251806,"endHours":24.179083623251806,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:11","end":"01:11","startHours":24.179083623251806,"endHours":25.179083623251806,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:11","end":"02:11","startHours":25.179083623251806,"endHours":26.179083623251806,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:11","end":"03:11","startHours":26.179083623251806,"endHours":27.179083623251806,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:11","end":"04:11","startHours":27.179083623251806,"endHours":28.179083623251806,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:11","end":"05:11","startHours":28.179083623251806,"endHours":29.179083623251806,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:11","end":"06:11","startHours":29.179083623251806,"endHours":30.179083623251806,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","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":1.8937250556750789,"eotMinutes":6.610022173674397,"ayanamsa":25.665}},"calendars":{"vikram_samvat":2186,"vikram_samvatsara":"Śubhakṛt","saka_samvat":2051,"saka_samvatsara":"Virodhi","bengali_samvat":1536,"malayalam_era":1305,"nanakshahi_year":660,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","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":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pañcamī · Vikram 2186 Śubhakṛt · Śaka 2051 Virodhi"},"festivals":[],"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":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 September 18, 2129 CE · Perth, Australia · Vidhyamitra","description":"September 18, 2129 CE for Perth, Australia: Śukla Pañcamī, sūryodaya 06:11, sūryāsta 18:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2129-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2129-09-18","sa":"https://sa.vidhyamitra.com/city/perth/2129-09-18","hi":"https://hi.vidhyamitra.com/city/perth/2129-09-18","x-default":"https://vidhyamitra.com/city/perth/2129-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T10:48:16.986Z","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":"2026-05-31T10:48:16.986Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T10:48:16.986Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}