{"id":"vidhyamitra:city-day:perth:1983-10-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1983-10-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-10-10","date_display":"October 10, 1983 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":1983,"month":10,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445617.770833,"kali_year":5085,"ahargana":1857152.2708,"sun":{"sidereal_longitude":171.8466,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":218.2544,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.4079,"elapsed_within_tithi_degrees":10.4079},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.2544,"elapsed_within_degrees":4.9211},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":30.101},"karana":{"half_tithi_index":7,"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":1983,"month":10,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445617.770833,"ahargana":1857152.2708,"kali_year":5085,"ayanamsa_lahiri":23.6263,"grahas":{"sun":{"sidereal_longitude":172.54897400000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"moon":{"sidereal_longitude":218.90087400000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":1.6025},"mars":{"sidereal_longitude":132.840374,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":158.31357400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":225.44757400000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":129.35317399999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":190.721274,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":59.1354,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":239.1354,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":1983,"month":10,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445617.770833,"kali_year":5085,"ahargana":1857152.2708,"sun":{"sidereal_longitude":171.8466,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":218.2544,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.4079,"elapsed_within_tithi_degrees":10.4079},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.2544,"elapsed_within_degrees":4.9211},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":30.101},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.602,"elongation":46.408},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.602,"opposition_distance":133.592}},"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":"05:43","sunsetLocal":"18:23","solarNoonLocal":"12:03","dayLengthHours":12.663707559607326,"dayLengthDisplay":"12 Hours 39 Mins 49 Secs","nightLengthDisplay":"11 Hours 20 Mins 11 Secs","moonriseLocal":"08:11","moonsetLocal":"22:06","rahuKala":{"name":"Rāhu Kāla","start":"07:18","end":"08:53","startHours":7.29801889728109,"endHours":8.880982342232006,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:28","end":"12:03","startHours":10.463945787182922,"endHours":12.046909232133839,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:13","startHours":13.629872677084753,"endHours":15.21283612203567,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:06","startHours":8.669920549571884,"endHours":9.092044134892127,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:15","end":"06:35","startHours":6.24270993398048,"endHours":6.580408802236676,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:28","startHours":11.624785646813594,"endHours":12.469032817454083,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:02","end":"04:52","startHours":4.0265611110491975,"endHours":4.870808281689686,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:40","end":"05:43","startHours":4.659746489029564,"endHours":5.715055452330175,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:00","startHours":14.157527158735059,"endHours":15.001774329375547,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:11","end":"18:35","startHours":18.1787630119375,"endHours":18.5787630119375,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:23","end":"18:54","startHours":18.3787630119375,"endHours":18.906417493587806,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:08","end":"19:53","startHours":18.1287630119375,"endHours":19.8787630119375,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:28","startHours":23.624785646813596,"endHours":24.46903281745408,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:43","end":"07:18","startHours":5.715055452330175,"endHours":7.29801889728109,"quality":"auspicious"},{"name":"Kāla","start":"07:18","end":"08:53","startHours":7.29801889728109,"endHours":8.880982342232006,"quality":"inauspicious"},{"name":"Śubha","start":"08:53","end":"10:28","startHours":8.880982342232006,"endHours":10.463945787182922,"quality":"auspicious"},{"name":"Roga","start":"10:28","end":"12:03","startHours":10.463945787182922,"endHours":12.046909232133839,"quality":"inauspicious"},{"name":"Udveg","start":"12:03","end":"13:38","startHours":12.046909232133839,"endHours":13.629872677084753,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:13","startHours":13.629872677084753,"endHours":15.21283612203567,"quality":"neutral"},{"name":"Labha","start":"15:13","end":"16:48","startHours":15.21283612203567,"endHours":16.795799566986584,"quality":"auspicious"},{"name":"Amṛta","start":"16:48","end":"18:23","startHours":16.795799566986584,"endHours":18.3787630119375,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:23","end":"19:48","startHours":18.3787630119375,"endHours":19.795799566986584,"quality":"neutral"},{"name":"Labha","start":"19:48","end":"21:13","startHours":19.795799566986584,"endHours":21.212836122035668,"quality":"auspicious"},{"name":"Amṛta","start":"21:13","end":"22:38","startHours":21.212836122035668,"endHours":22.629872677084755,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:03","startHours":22.629872677084755,"endHours":24.04690923213384,"quality":"inauspicious"},{"name":"Śubha","start":"00:03","end":"01:28","startHours":24.04690923213384,"endHours":25.463945787182922,"quality":"auspicious"},{"name":"Roga","start":"01:28","end":"02:53","startHours":25.463945787182922,"endHours":26.880982342232006,"quality":"inauspicious"},{"name":"Udveg","start":"02:53","end":"04:18","startHours":26.880982342232006,"endHours":28.29801889728109,"quality":"inauspicious"},{"name":"Chala","start":"04:18","end":"05:43","startHours":28.29801889728109,"endHours":29.715055452330176,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:43","end":"06:43","startHours":5.715055452330175,"endHours":6.715055452330175,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:43","end":"07:43","startHours":6.715055452330175,"endHours":7.715055452330175,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:43","end":"08:43","startHours":7.715055452330175,"endHours":8.715055452330175,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:43","end":"09:43","startHours":8.715055452330175,"endHours":9.715055452330175,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:43","end":"10:43","startHours":9.715055452330175,"endHours":10.715055452330175,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:43","end":"11:43","startHours":10.715055452330175,"endHours":11.715055452330175,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:43","end":"12:43","startHours":11.715055452330175,"endHours":12.715055452330175,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:43","end":"13:43","startHours":12.715055452330175,"endHours":13.715055452330175,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:43","end":"14:43","startHours":13.715055452330175,"endHours":14.715055452330175,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:43","end":"15:43","startHours":14.715055452330175,"endHours":15.715055452330175,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:43","end":"16:43","startHours":15.715055452330175,"endHours":16.715055452330176,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:43","end":"17:43","startHours":16.715055452330176,"endHours":17.715055452330176,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:43","end":"18:43","startHours":17.715055452330176,"endHours":18.715055452330176,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:43","end":"19:43","startHours":18.715055452330176,"endHours":19.715055452330176,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:43","end":"20:43","startHours":19.715055452330176,"endHours":20.715055452330176,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:43","end":"21:43","startHours":20.715055452330176,"endHours":21.715055452330176,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:43","end":"22:43","startHours":21.715055452330176,"endHours":22.715055452330176,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:43","end":"23:43","startHours":22.715055452330176,"endHours":23.715055452330176,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:43","end":"00:43","startHours":23.715055452330176,"endHours":24.715055452330176,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:43","end":"01:43","startHours":24.715055452330176,"endHours":25.715055452330176,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:43","end":"02:43","startHours":25.715055452330176,"endHours":26.715055452330176,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:43","end":"03:43","startHours":26.715055452330176,"endHours":27.715055452330176,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:43","end":"04:43","startHours":27.715055452330176,"endHours":28.715055452330176,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:43","end":"05:43","startHours":28.715055452330176,"endHours":29.715055452330176,"planetary_lord":"Venus"}],"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":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-6.361375456912371,"eotMinutes":13.743446071969673,"ayanamsa":23.6263}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Caturthī · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"festivals":[{"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":"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 10, 1983 CE · Perth, Australia · Vidhyamitra","description":"October 10, 1983 CE for Perth, Australia: Śukla Caturthī, sūryodaya 05:43, sūryāsta 18:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1983-10-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1983-10-10","sa":"https://sa.vidhyamitra.com/city/perth/1983-10-10","hi":"https://hi.vidhyamitra.com/city/perth/1983-10-10","x-default":"https://vidhyamitra.com/city/perth/1983-10-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T23:30:03.446Z","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":"2026-05-31T23:30:03.446Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T23:30:03.446Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}