{"id":"vidhyamitra:city-day:perth:1982-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1982-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1982-10-20","date_display":"October 20, 1982 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":1982,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445262.770833,"kali_year":5084,"ahargana":1856797.2708,"sun":{"sidereal_longitude":182.0302,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":220.1228,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.0926,"elapsed_within_tithi_degrees":2.0926},"nakshatra":{"number":17,"name":"Anurādhā","pada":3,"moon_longitude":220.1228,"elapsed_within_degrees":6.7895},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.1531},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1982,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445262.770833,"ahargana":1856797.2708,"kali_year":5084,"ayanamsa_lahiri":23.6127,"grahas":{"sun":{"sidereal_longitude":182.712538,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":218.408638,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":2.7577},"mars":{"sidereal_longitude":237.87313799999993,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":165.15923799999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":202.597038,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":179.13993800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":181.356538,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":77.9451,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":257.9451,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":1982,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445262.770833,"kali_year":5084,"ahargana":1856797.2708,"sun":{"sidereal_longitude":182.0302,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":220.1228,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.0926,"elapsed_within_tithi_degrees":2.0926},"nakshatra":{"number":17,"name":"Anurādhā","pada":3,"moon_longitude":220.1228,"elapsed_within_degrees":6.7895},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.1531},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.758,"elongation":38.093},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.758,"opposition_distance":141.907}},"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":"05:31","sunsetLocal":"18:31","solarNoonLocal":"12:01","dayLengthHours":12.989489064270309,"dayLengthDisplay":"12 Hours 59 Mins 22 Secs","nightLengthDisplay":"11 Hours 00 Mins 38 Secs","moonriseLocal":"07:26","moonsetLocal":"21:21","rahuKala":{"name":"Rāhu Kāla","start":"12:01","end":"13:38","startHours":12.014352145929479,"endHours":13.638038278963268,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:09","end":"08:46","startHours":7.143293746828113,"endHours":8.766979879861902,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:23","end":"12:01","startHours":10.39066601289569,"endHours":12.014352145929479,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:59","startHours":8.550488395457396,"endHours":8.983471364266407,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:24","startHours":6.060836324805587,"endHours":6.407222699852795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.581369177120468,"endHours":12.44733511473849,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:47","end":"04:39","startHours":3.787675738558283,"endHours":4.653641676176304,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:26","end":"05:31","startHours":4.437150191771799,"endHours":5.519607613794324,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:03","startHours":14.17926698997453,"endHours":15.045232927592549,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.309096678064634,"endHours":18.709096678064633,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:03","startHours":18.509096678064633,"endHours":19.050325389075898,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.259096678064633,"endHours":20.009096678064633,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.581369177120468,"endHours":24.44733511473849,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:31","end":"07:09","startHours":5.519607613794324,"endHours":7.143293746828113,"quality":"auspicious"},{"name":"Amṛta","start":"07:09","end":"08:46","startHours":7.143293746828113,"endHours":8.766979879861902,"quality":"auspicious"},{"name":"Kāla","start":"08:46","end":"10:23","startHours":8.766979879861902,"endHours":10.39066601289569,"quality":"inauspicious"},{"name":"Śubha","start":"10:23","end":"12:01","startHours":10.39066601289569,"endHours":12.014352145929479,"quality":"auspicious"},{"name":"Roga","start":"12:01","end":"13:38","startHours":12.014352145929479,"endHours":13.638038278963268,"quality":"inauspicious"},{"name":"Udveg","start":"13:38","end":"15:16","startHours":13.638038278963268,"endHours":15.261724411997056,"quality":"inauspicious"},{"name":"Chala","start":"15:16","end":"16:53","startHours":15.261724411997056,"endHours":16.885410545030844,"quality":"neutral"},{"name":"Labha","start":"16:53","end":"18:31","startHours":16.885410545030844,"endHours":18.509096678064633,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:31","end":"19:53","startHours":18.509096678064633,"endHours":19.885410545030844,"quality":"inauspicious"},{"name":"Chala","start":"19:53","end":"21:16","startHours":19.885410545030844,"endHours":21.261724411997058,"quality":"neutral"},{"name":"Labha","start":"21:16","end":"22:38","startHours":21.261724411997058,"endHours":22.63803827896327,"quality":"auspicious"},{"name":"Amṛta","start":"22:38","end":"00:01","startHours":22.63803827896327,"endHours":24.01435214592948,"quality":"auspicious"},{"name":"Kāla","start":"00:01","end":"01:23","startHours":24.01435214592948,"endHours":25.39066601289569,"quality":"inauspicious"},{"name":"Śubha","start":"01:23","end":"02:46","startHours":25.39066601289569,"endHours":26.7669798798619,"quality":"auspicious"},{"name":"Roga","start":"02:46","end":"04:09","startHours":26.7669798798619,"endHours":28.143293746828114,"quality":"inauspicious"},{"name":"Udveg","start":"04:09","end":"05:31","startHours":28.143293746828114,"endHours":29.519607613794324,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.519607613794324,"endHours":6.519607613794324,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.519607613794324,"endHours":7.519607613794324,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.519607613794324,"endHours":8.519607613794324,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.519607613794324,"endHours":9.519607613794324,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.519607613794324,"endHours":10.519607613794324,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.519607613794324,"endHours":11.519607613794324,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.519607613794324,"endHours":12.519607613794324,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.519607613794324,"endHours":13.519607613794324,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.519607613794324,"endHours":14.519607613794324,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.519607613794324,"endHours":15.519607613794324,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.519607613794324,"endHours":16.519607613794324,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.519607613794324,"endHours":17.519607613794324,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.519607613794324,"endHours":18.519607613794324,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.519607613794324,"endHours":19.519607613794324,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.519607613794324,"endHours":20.519607613794324,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.519607613794324,"endHours":21.519607613794324,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.519607613794324,"endHours":22.519607613794324,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.519607613794324,"endHours":23.519607613794324,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.519607613794324,"endHours":24.519607613794324,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.519607613794324,"endHours":25.519607613794324,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.519607613794324,"endHours":26.519607613794324,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.519607613794324,"endHours":27.519607613794324,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.519607613794324,"endHours":28.519607613794324,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.519607613794324,"endHours":29.519607613794324,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"North-East","rahuVasa":"South-West","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.159024400675856,"eotMinutes":15.696871244231174,"ayanamsa":23.6127}},"calendars":{"vikram_samvat":2039,"vikram_samvatsara":"Yuva","saka_samvat":1904,"saka_samvatsara":"Dundubhi","bengali_samvat":1389,"malayalam_era":1158,"nanakshahi_year":513,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Caturthī · Vikram 2039 Yuva · Śaka 1904 Dundubhi"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5},{"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":"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 20, 1982 CE · Perth, Australia · Vidhyamitra","description":"October 20, 1982 CE for Perth, Australia: Śukla Caturthī, sūryodaya 05:31, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1982-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1982-10-20","sa":"https://sa.vidhyamitra.com/city/perth/1982-10-20","hi":"https://hi.vidhyamitra.com/city/perth/1982-10-20","x-default":"https://vidhyamitra.com/city/perth/1982-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T21:56:45.387Z","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":"2026-05-18T21:56:45.387Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T21:56:45.387Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}