{"id":"vidhyamitra:city-day:perth:2001-10-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2001-10-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-10-15","date_display":"October 15, 2001 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":2001,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452197.770833,"kali_year":5103,"ahargana":1863732.2708,"sun":{"sidereal_longitude":177.1406,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":154.6497,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":337.5091,"elapsed_within_tithi_degrees":1.5091},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.6497,"elapsed_within_degrees":7.983},"yoga":{"number":25,"name":"Brahma","sum_longitude":331.7903},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"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":2001,"month":10,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2452197.770833,"ahargana":1863732.2708,"kali_year":5103,"ayanamsa_lahiri":23.878,"grahas":{"sun":{"sidereal_longitude":177.87916999999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":153.30687,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":4.4766},"mars":{"sidereal_longitude":267.61527,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":175.92457000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":81.15746999999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"venus":{"sidereal_longitude":155.57756999999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":50.71836999999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":70.4954,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":250.4954,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"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":2001,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2452197.770833,"kali_year":5103,"ahargana":1863732.2708,"sun":{"sidereal_longitude":177.1406,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":154.6497,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":337.5091,"elapsed_within_tithi_degrees":1.5091},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":154.6497,"elapsed_within_degrees":7.983},"yoga":{"number":25,"name":"Brahma","sum_longitude":331.7903},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.477,"elongation":22.491},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.477,"opposition_distance":157.509}},"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":"05:36","sunsetLocal":"18:27","solarNoonLocal":"12:02","dayLengthHours":12.844238048060316,"dayLengthDisplay":"12 Hours 50 Mins 39 Secs","nightLengthDisplay":"11 Hours 09 Mins 21 Secs","moonriseLocal":"04:23","moonsetLocal":"16:23","rahuKala":{"name":"Rāhu Kāla","start":"07:13","end":"08:49","startHours":7.211763559122248,"endHours":8.817293315129788,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:25","end":"12:02","startHours":10.422823071137326,"endHours":12.028352827144868,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:14","startHours":13.633882583152406,"endHours":15.239412339159944,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:02","startHours":8.60322268099545,"endHours":9.031363949264128,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:08","end":"06:29","startHours":6.141410388450556,"endHours":6.483923403065497,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.60021155887619,"endHours":12.456494095413543,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:54","end":"04:45","startHours":3.893668730040001,"endHours":4.749951266577355,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:36","startHours":4.535880632443016,"endHours":5.606233803114709,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:02","startHours":14.169059168488253,"endHours":15.025341705025609,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.250471851175025,"endHours":18.650471851175023,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:59","startHours":18.450471851175024,"endHours":18.98564843651087,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.200471851175024,"endHours":19.950471851175024,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.600211558876186,"endHours":24.456494095413543,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:36","end":"07:13","startHours":5.606233803114709,"endHours":7.211763559122248,"quality":"auspicious"},{"name":"Kāla","start":"07:13","end":"08:49","startHours":7.211763559122248,"endHours":8.817293315129788,"quality":"inauspicious"},{"name":"Śubha","start":"08:49","end":"10:25","startHours":8.817293315129788,"endHours":10.422823071137326,"quality":"auspicious"},{"name":"Roga","start":"10:25","end":"12:02","startHours":10.422823071137326,"endHours":12.028352827144868,"quality":"inauspicious"},{"name":"Udveg","start":"12:02","end":"13:38","startHours":12.028352827144868,"endHours":13.633882583152406,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:14","startHours":13.633882583152406,"endHours":15.239412339159944,"quality":"neutral"},{"name":"Labha","start":"15:14","end":"16:51","startHours":15.239412339159944,"endHours":16.844942095167486,"quality":"auspicious"},{"name":"Amṛta","start":"16:51","end":"18:27","startHours":16.844942095167486,"endHours":18.450471851175024,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:27","end":"19:51","startHours":18.450471851175024,"endHours":19.844942095167486,"quality":"neutral"},{"name":"Labha","start":"19:51","end":"21:14","startHours":19.844942095167486,"endHours":21.239412339159944,"quality":"auspicious"},{"name":"Amṛta","start":"21:14","end":"22:38","startHours":21.239412339159944,"endHours":22.633882583152406,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:02","startHours":22.633882583152406,"endHours":24.028352827144865,"quality":"inauspicious"},{"name":"Śubha","start":"00:02","end":"01:25","startHours":24.028352827144865,"endHours":25.422823071137326,"quality":"auspicious"},{"name":"Roga","start":"01:25","end":"02:49","startHours":25.422823071137326,"endHours":26.81729331512979,"quality":"inauspicious"},{"name":"Udveg","start":"02:49","end":"04:13","startHours":26.81729331512979,"endHours":28.211763559122247,"quality":"inauspicious"},{"name":"Chala","start":"04:13","end":"05:36","startHours":28.211763559122247,"endHours":29.60623380311471,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:36","end":"06:36","startHours":5.606233803114709,"endHours":6.606233803114709,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:36","end":"07:36","startHours":6.606233803114709,"endHours":7.606233803114709,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:36","end":"08:36","startHours":7.606233803114709,"endHours":8.606233803114709,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:36","end":"09:36","startHours":8.606233803114709,"endHours":9.606233803114709,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:36","end":"10:36","startHours":9.606233803114709,"endHours":10.606233803114709,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:36","end":"11:36","startHours":10.606233803114709,"endHours":11.606233803114709,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:36","end":"12:36","startHours":11.606233803114709,"endHours":12.606233803114709,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:36","end":"13:36","startHours":12.606233803114709,"endHours":13.606233803114709,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:36","end":"14:36","startHours":13.606233803114709,"endHours":14.606233803114709,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:36","end":"15:36","startHours":14.606233803114709,"endHours":15.606233803114709,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:36","end":"16:36","startHours":15.606233803114709,"endHours":16.60623380311471,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:36","end":"17:36","startHours":16.60623380311471,"endHours":17.60623380311471,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:36","end":"18:36","startHours":17.60623380311471,"endHours":18.60623380311471,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:36","end":"19:36","startHours":18.60623380311471,"endHours":19.60623380311471,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:36","end":"20:36","startHours":19.60623380311471,"endHours":20.60623380311471,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:36","end":"21:36","startHours":20.60623380311471,"endHours":21.60623380311471,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:36","end":"22:36","startHours":21.60623380311471,"endHours":22.60623380311471,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:36","end":"23:36","startHours":22.60623380311471,"endHours":23.60623380311471,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:36","end":"00:36","startHours":23.60623380311471,"endHours":24.60623380311471,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:36","end":"01:36","startHours":24.60623380311471,"endHours":25.60623380311471,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:36","end":"02:36","startHours":25.60623380311471,"endHours":26.60623380311471,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:36","end":"03:36","startHours":26.60623380311471,"endHours":27.60623380311471,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:36","end":"04:36","startHours":27.60623380311471,"endHours":28.60623380311471,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:36","end":"05:36","startHours":28.60623380311471,"endHours":29.60623380311471,"planetary_lord":"Venus"}],"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":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","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":-8.477959683241146,"eotMinutes":14.85683037130801,"ayanamsa":23.878}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Caturdaśī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"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":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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 October 15, 2001 CE · Perth, Australia · Vidhyamitra","description":"October 15, 2001 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 05:36, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2001-10-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2001-10-15","sa":"https://sa.vidhyamitra.com/city/perth/2001-10-15","hi":"https://hi.vidhyamitra.com/city/perth/2001-10-15","x-default":"https://vidhyamitra.com/city/perth/2001-10-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T05:14:36.020Z","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":"2026-05-17T05:14:36.020Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T05:14:36.020Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}