{"id":"vidhyamitra:city-day:perth:2017-09-24:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2017-09-24","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-09-24","date_display":"September 24, 2017 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":2017,"month":9,"day":24,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458020.770833,"kali_year":5119,"ahargana":1869555.2708,"sun":{"sidereal_longitude":156.309,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":203.7385,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":47.4296,"elapsed_within_tithi_degrees":11.4296},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.7385,"elapsed_within_degrees":3.7385},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":0.0475},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":2017,"month":9,"day":24,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458020.770833,"ahargana":1869555.2708,"kali_year":5119,"ayanamsa_lahiri":24.1007,"grahas":{"sun":{"sidereal_longitude":157.09348799999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":202.18768799999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false,"latitude":4.4536},"mars":{"sidereal_longitude":137.45948800000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":144.82748800000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":182.11348799999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":130.55478800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":237.62728800000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":121.9648,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":301.9648,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2017,"month":9,"day":24,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458020.770833,"kali_year":5119,"ahargana":1869555.2708,"sun":{"sidereal_longitude":156.309,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":203.7385,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":47.4296,"elapsed_within_tithi_degrees":11.4296},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.7385,"elapsed_within_degrees":3.7385},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":0.0475},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.454,"elongation":47.43},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.454,"opposition_distance":132.57}},"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":"06:03","sunsetLocal":"18:13","solarNoonLocal":"12:08","dayLengthHours":12.17040561589474,"dayLengthDisplay":"12 Hours 10 Mins 13 Secs","nightLengthDisplay":"11 Hours 49 Mins 47 Secs","moonriseLocal":"08:22","moonsetLocal":"21:54","rahuKala":{"name":"Rāhu Kāla","start":"16:42","end":"18:13","startHours":16.693316932730887,"endHours":18.21461763471773,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:08","end":"13:39","startHours":12.129414826770358,"endHours":13.6507155287572,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:10","end":"16:42","startHours":15.172016230744045,"endHours":16.693316932730887,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:17","startHours":8.883973329198428,"endHours":9.28965351639492,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:33","end":"06:53","startHours":6.551312252818603,"endHours":6.875856402575796,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:32","startHours":11.723734639573868,"endHours":12.53509501396685,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:25","end":"05:14","startHours":4.4214912700370235,"endHours":5.2328516444300055,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:02","end":"06:03","startHours":5.03001155083176,"endHours":6.044212018822988,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:58","startHours":14.157815762752815,"endHours":14.969176137145798,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.01461763471773,"endHours":18.41461763471773,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:43","startHours":18.21461763471773,"endHours":18.721717868713345,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.96461763471773,"endHours":19.71461763471773,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:32","startHours":23.723734639573866,"endHours":24.53509501396685,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:03","end":"07:34","startHours":6.044212018822988,"endHours":7.565512720809831,"quality":"inauspicious"},{"name":"Chala","start":"07:34","end":"09:05","startHours":7.565512720809831,"endHours":9.086813422796673,"quality":"neutral"},{"name":"Labha","start":"09:05","end":"10:36","startHours":9.086813422796673,"endHours":10.608114124783516,"quality":"auspicious"},{"name":"Amṛta","start":"10:36","end":"12:08","startHours":10.608114124783516,"endHours":12.129414826770358,"quality":"auspicious"},{"name":"Kāla","start":"12:08","end":"13:39","startHours":12.129414826770358,"endHours":13.6507155287572,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:10","startHours":13.6507155287572,"endHours":15.172016230744045,"quality":"auspicious"},{"name":"Roga","start":"15:10","end":"16:42","startHours":15.172016230744045,"endHours":16.693316932730887,"quality":"inauspicious"},{"name":"Udveg","start":"16:42","end":"18:13","startHours":16.693316932730887,"endHours":18.21461763471773,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:13","end":"19:42","startHours":18.21461763471773,"endHours":19.693316932730887,"quality":"auspicious"},{"name":"Roga","start":"19:42","end":"21:10","startHours":19.693316932730887,"endHours":21.172016230744045,"quality":"inauspicious"},{"name":"Udveg","start":"21:10","end":"22:39","startHours":21.172016230744045,"endHours":22.650715528757203,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:08","startHours":22.650715528757203,"endHours":24.129414826770358,"quality":"neutral"},{"name":"Labha","start":"00:08","end":"01:36","startHours":24.129414826770358,"endHours":25.60811412478352,"quality":"auspicious"},{"name":"Amṛta","start":"01:36","end":"03:05","startHours":25.60811412478352,"endHours":27.086813422796673,"quality":"auspicious"},{"name":"Kāla","start":"03:05","end":"04:34","startHours":27.086813422796673,"endHours":28.56551272080983,"quality":"inauspicious"},{"name":"Śubha","start":"04:34","end":"06:03","startHours":28.56551272080983,"endHours":30.04421201882299,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:03","end":"07:03","startHours":6.044212018822988,"endHours":7.044212018822988,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:03","end":"08:03","startHours":7.044212018822988,"endHours":8.04421201882299,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:03","end":"09:03","startHours":8.04421201882299,"endHours":9.04421201882299,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:03","end":"10:03","startHours":9.04421201882299,"endHours":10.04421201882299,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:03","end":"11:03","startHours":10.04421201882299,"endHours":11.04421201882299,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:03","end":"12:03","startHours":11.04421201882299,"endHours":12.04421201882299,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:03","end":"13:03","startHours":12.04421201882299,"endHours":13.04421201882299,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:03","end":"14:03","startHours":13.04421201882299,"endHours":14.04421201882299,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:03","end":"15:03","startHours":14.04421201882299,"endHours":15.04421201882299,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:03","end":"16:03","startHours":15.04421201882299,"endHours":16.04421201882299,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:03","end":"17:03","startHours":16.04421201882299,"endHours":17.04421201882299,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:03","end":"18:03","startHours":17.04421201882299,"endHours":18.04421201882299,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:03","end":"19:03","startHours":18.04421201882299,"endHours":19.04421201882299,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:03","end":"20:03","startHours":19.04421201882299,"endHours":20.04421201882299,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:03","end":"21:03","startHours":20.04421201882299,"endHours":21.04421201882299,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:03","end":"22:03","startHours":21.04421201882299,"endHours":22.04421201882299,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:03","end":"23:03","startHours":22.04421201882299,"endHours":23.04421201882299,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:03","end":"00:03","startHours":23.04421201882299,"endHours":24.04421201882299,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:03","end":"01:03","startHours":24.04421201882299,"endHours":25.04421201882299,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:03","end":"02:03","startHours":25.04421201882299,"endHours":26.04421201882299,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:03","end":"03:03","startHours":26.04421201882299,"endHours":27.04421201882299,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:03","end":"04:03","startHours":27.04421201882299,"endHours":28.04421201882299,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:03","end":"05:03","startHours":28.04421201882299,"endHours":29.04421201882299,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:03","end":"06:03","startHours":29.04421201882299,"endHours":30.04421201882299,"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"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-0.474938383564356,"eotMinutes":8.793110393778392,"ayanamsa":24.1007}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Caturthī · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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 24, 2017 CE · Perth, Australia · Vidhyamitra","description":"September 24, 2017 CE for Perth, Australia: Śukla Caturthī, sūryodaya 06:03, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2017-09-24","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2017-09-24","sa":"https://sa.vidhyamitra.com/city/perth/2017-09-24","hi":"https://hi.vidhyamitra.com/city/perth/2017-09-24","x-default":"https://vidhyamitra.com/city/perth/2017-09-24"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T12:37:01.439Z","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":"2026-05-15T12:37:01.439Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T12:37:01.439Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}