{"id":"vidhyamitra:city-day:perth:1986-10-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1986-10-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-10-01","date_display":"October 1, 1986 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":1986,"month":10,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446704.770833,"kali_year":5088,"ahargana":1858239.2708,"sun":{"sidereal_longitude":163.1934,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":128.5413,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":325.3479,"elapsed_within_tithi_degrees":1.3479},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":128.5413,"elapsed_within_degrees":8.5413},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.7347},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1986,"month":10,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446704.770833,"ahargana":1858239.2708,"kali_year":5088,"ayanamsa_lahiri":23.6679,"grahas":{"sun":{"sidereal_longitude":163.90684299999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"moon":{"sidereal_longitude":129.641143,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false,"latitude":3.5925},"mars":{"sidereal_longitude":272.293043,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":182.091143,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":322.45494299999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":203.271343,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":221.365543,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":1.541,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":181.541,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","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":1986,"month":10,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446704.770833,"kali_year":5088,"ahargana":1858239.2708,"sun":{"sidereal_longitude":163.1934,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":128.5413,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":325.3479,"elapsed_within_tithi_degrees":1.3479},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":128.5413,"elapsed_within_degrees":8.5413},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.7347},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.593,"elongation":34.652},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.593,"opposition_distance":145.348}},"eclipse_window_40days":[{"offset_days":3,"type":"solar","occurs":true,"moon_latitude":1.033,"elongation":1.957}]},"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":"05:54","sunsetLocal":"18:17","solarNoonLocal":"12:05","dayLengthHours":12.381371059837448,"dayLengthDisplay":"12 Hours 22 Mins 53 Secs","nightLengthDisplay":"11 Hours 37 Mins 07 Secs","moonriseLocal":"04:12","moonsetLocal":"15:25","rahuKala":{"name":"Rāhu Kāla","start":"12:05","end":"13:38","startHours":12.089837263556927,"endHours":13.637508646036608,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:27","end":"09:00","startHours":7.446823116117883,"endHours":8.994494498597565,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:33","end":"12:05","startHours":10.542165881077246,"endHours":12.089837263556927,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:47","end":"09:12","startHours":8.78813831426694,"endHours":9.200850682928188,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:25","end":"06:45","startHours":6.415042194464762,"endHours":6.74521208939376,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:41","end":"12:30","startHours":11.677124894895679,"endHours":12.502549632218175,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:04","startHours":4.248302258993208,"endHours":5.073726996315705,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:52","end":"05:54","startHours":4.867370811985081,"endHours":5.8991517336382016,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:59","startHours":14.153399106863166,"endHours":14.978823844185662,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:05","end":"18:29","startHours":18.08052279347565,"endHours":18.48052279347565,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:17","end":"18:48","startHours":18.28052279347565,"endHours":18.796413254302212,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:02","end":"19:47","startHours":18.03052279347565,"endHours":19.78052279347565,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:41","end":"00:30","startHours":23.677124894895677,"endHours":24.502549632218177,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:54","end":"07:27","startHours":5.8991517336382016,"endHours":7.446823116117883,"quality":"auspicious"},{"name":"Amṛta","start":"07:27","end":"09:00","startHours":7.446823116117883,"endHours":8.994494498597565,"quality":"auspicious"},{"name":"Kāla","start":"09:00","end":"10:33","startHours":8.994494498597565,"endHours":10.542165881077246,"quality":"inauspicious"},{"name":"Śubha","start":"10:33","end":"12:05","startHours":10.542165881077246,"endHours":12.089837263556927,"quality":"auspicious"},{"name":"Roga","start":"12:05","end":"13:38","startHours":12.089837263556927,"endHours":13.637508646036608,"quality":"inauspicious"},{"name":"Udveg","start":"13:38","end":"15:11","startHours":13.637508646036608,"endHours":15.185180028516289,"quality":"inauspicious"},{"name":"Chala","start":"15:11","end":"16:44","startHours":15.185180028516289,"endHours":16.73285141099597,"quality":"neutral"},{"name":"Labha","start":"16:44","end":"18:17","startHours":16.73285141099597,"endHours":18.28052279347565,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:17","end":"19:44","startHours":18.28052279347565,"endHours":19.73285141099597,"quality":"inauspicious"},{"name":"Chala","start":"19:44","end":"21:11","startHours":19.73285141099597,"endHours":21.18518002851629,"quality":"neutral"},{"name":"Labha","start":"21:11","end":"22:38","startHours":21.18518002851629,"endHours":22.637508646036608,"quality":"auspicious"},{"name":"Amṛta","start":"22:38","end":"00:05","startHours":22.637508646036608,"endHours":24.089837263556927,"quality":"auspicious"},{"name":"Kāla","start":"00:05","end":"01:33","startHours":24.089837263556927,"endHours":25.542165881077246,"quality":"inauspicious"},{"name":"Śubha","start":"01:33","end":"03:00","startHours":25.542165881077246,"endHours":26.994494498597565,"quality":"auspicious"},{"name":"Roga","start":"03:00","end":"04:27","startHours":26.994494498597565,"endHours":28.446823116117884,"quality":"inauspicious"},{"name":"Udveg","start":"04:27","end":"05:54","startHours":28.446823116117884,"endHours":29.899151733638202,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:54","end":"06:54","startHours":5.8991517336382016,"endHours":6.8991517336382016,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:54","end":"07:54","startHours":6.8991517336382016,"endHours":7.8991517336382016,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:54","end":"08:54","startHours":7.8991517336382016,"endHours":8.899151733638202,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:54","end":"09:54","startHours":8.899151733638202,"endHours":9.899151733638202,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:54","end":"10:54","startHours":9.899151733638202,"endHours":10.899151733638202,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:54","end":"11:54","startHours":10.899151733638202,"endHours":11.899151733638202,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:54","end":"12:54","startHours":11.899151733638202,"endHours":12.899151733638202,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:54","end":"13:54","startHours":12.899151733638202,"endHours":13.899151733638202,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:54","end":"14:54","startHours":13.899151733638202,"endHours":14.899151733638202,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:54","end":"15:54","startHours":14.899151733638202,"endHours":15.899151733638202,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:54","end":"16:54","startHours":15.899151733638202,"endHours":16.899151733638202,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:54","end":"17:54","startHours":16.899151733638202,"endHours":17.899151733638202,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:54","end":"18:54","startHours":17.899151733638202,"endHours":18.899151733638202,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:54","end":"19:54","startHours":18.899151733638202,"endHours":19.899151733638202,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:54","end":"20:54","startHours":19.899151733638202,"endHours":20.899151733638202,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:54","end":"21:54","startHours":20.899151733638202,"endHours":21.899151733638202,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:54","end":"22:54","startHours":21.899151733638202,"endHours":22.899151733638202,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:54","end":"23:54","startHours":22.899151733638202,"endHours":23.899151733638202,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:54","end":"00:54","startHours":23.899151733638202,"endHours":24.899151733638202,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:54","end":"01:54","startHours":24.899151733638202,"endHours":25.899151733638202,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:54","end":"02:54","startHours":25.899151733638202,"endHours":26.899151733638202,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:54","end":"03:54","startHours":26.899151733638202,"endHours":27.899151733638202,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:54","end":"04:54","startHours":27.899151733638202,"endHours":28.899151733638202,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:54","end":"05:54","startHours":28.899151733638202,"endHours":29.899151733638202,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","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":"North (Uttara)","chandraVasa":"West","rahuVasa":"South-West","anandadiYoga":{"name":"Mausala","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":-3.0053307186670604,"eotMinutes":11.167764186584405,"ayanamsa":23.6679}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Trayodaśī · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"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":"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":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 1, 1986 CE · Perth, Australia · Vidhyamitra","description":"October 1, 1986 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 05:54, sūryāsta 18:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1986-10-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1986-10-01","sa":"https://sa.vidhyamitra.com/city/perth/1986-10-01","hi":"https://hi.vidhyamitra.com/city/perth/1986-10-01","x-default":"https://vidhyamitra.com/city/perth/1986-10-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T02:58:55.972Z","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":"2026-05-19T02:58:55.972Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T02:58:55.972Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}