{"id":"vidhyamitra:city-day:perth:2183-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2183-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2183-12-17","date_display":"December 17, 2183 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":2183,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2518734.770833,"kali_year":5285,"ahargana":1930269.2708,"sun":{"sidereal_longitude":237.7355,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":262.0847,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":24.3492,"elapsed_within_tithi_degrees":0.3492},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3,"moon_longitude":262.0847,"elapsed_within_degrees":8.7514},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":139.8202},"karana":{"half_tithi_index":4,"name":"Taitila"},"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":2183,"month":12,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2518734.770833,"ahargana":1930269.2708,"kali_year":5285,"ayanamsa_lahiri":26.4228,"grahas":{"sun":{"sidereal_longitude":238.56616699999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":263.475767,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false,"latitude":4.0073},"mars":{"sidereal_longitude":244.070067,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":217.94226700000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":196.11706700000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":205.934667,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":123.94086700000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":145.0449,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":325.0449,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":2183,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2518734.770833,"kali_year":5285,"ahargana":1930269.2708,"sun":{"sidereal_longitude":237.7355,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":262.0847,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":24.3492,"elapsed_within_tithi_degrees":0.3492},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3,"moon_longitude":262.0847,"elapsed_within_degrees":8.7514},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":139.8202},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.007,"elongation":24.349},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.007,"opposition_distance":155.651}},"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":"05:06","sunsetLocal":"19:20","solarNoonLocal":"12:13","dayLengthHours":14.230109744389294,"dayLengthDisplay":"14 Hours 13 Mins 48 Secs","nightLengthDisplay":"9 Hours 46 Mins 12 Secs","moonriseLocal":"06:52","moonsetLocal":"20:54","rahuKala":{"name":"Rāhu Kāla","start":"12:13","end":"14:00","startHours":12.221743852048192,"endHours":14.000507570096854,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:53","end":"08:40","startHours":6.885452697902208,"endHours":8.66421641595087,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:27","end":"12:13","startHours":10.44298013399953,"endHours":12.221743852048192,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:54","startHours":8.427047920211049,"endHours":8.901384911690691,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:42","end":"06:05","startHours":5.6996102192031,"endHours":6.079079812386815,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:42","startHours":11.74740686056855,"endHours":12.696080843527835,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:13","end":"04:09","startHours":3.2093410139349734,"endHours":4.158014996894259,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:55","end":"05:06","startHours":3.920846501154438,"endHours":5.106688979853546,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:33","startHours":14.59342880944641,"endHours":15.542102792405696,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.13679872424284,"endHours":19.53679872424284,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:56","startHours":19.33679872424284,"endHours":19.929719963592394,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.08679872424284,"endHours":20.83679872424284,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:42","startHours":23.74740686056855,"endHours":24.696080843527835,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:06","end":"06:53","startHours":5.106688979853546,"endHours":6.885452697902208,"quality":"auspicious"},{"name":"Amṛta","start":"06:53","end":"08:40","startHours":6.885452697902208,"endHours":8.66421641595087,"quality":"auspicious"},{"name":"Kāla","start":"08:40","end":"10:27","startHours":8.66421641595087,"endHours":10.44298013399953,"quality":"inauspicious"},{"name":"Śubha","start":"10:27","end":"12:13","startHours":10.44298013399953,"endHours":12.221743852048192,"quality":"auspicious"},{"name":"Roga","start":"12:13","end":"14:00","startHours":12.221743852048192,"endHours":14.000507570096854,"quality":"inauspicious"},{"name":"Udveg","start":"14:00","end":"15:47","startHours":14.000507570096854,"endHours":15.779271288145516,"quality":"inauspicious"},{"name":"Chala","start":"15:47","end":"17:33","startHours":15.779271288145516,"endHours":17.558035006194178,"quality":"neutral"},{"name":"Labha","start":"17:33","end":"19:20","startHours":17.558035006194178,"endHours":19.33679872424284,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:20","end":"20:33","startHours":19.33679872424284,"endHours":20.558035006194178,"quality":"inauspicious"},{"name":"Chala","start":"20:33","end":"21:47","startHours":20.558035006194178,"endHours":21.779271288145516,"quality":"neutral"},{"name":"Labha","start":"21:47","end":"23:00","startHours":21.779271288145516,"endHours":23.000507570096854,"quality":"auspicious"},{"name":"Amṛta","start":"23:00","end":"00:13","startHours":23.000507570096854,"endHours":24.221743852048192,"quality":"auspicious"},{"name":"Kāla","start":"00:13","end":"01:27","startHours":24.221743852048192,"endHours":25.44298013399953,"quality":"inauspicious"},{"name":"Śubha","start":"01:27","end":"02:40","startHours":25.44298013399953,"endHours":26.664216415950868,"quality":"auspicious"},{"name":"Roga","start":"02:40","end":"03:53","startHours":26.664216415950868,"endHours":27.88545269790221,"quality":"inauspicious"},{"name":"Udveg","start":"03:53","end":"05:06","startHours":27.88545269790221,"endHours":29.106688979853544,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:06","end":"06:06","startHours":5.106688979853546,"endHours":6.106688979853546,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:06","end":"07:06","startHours":6.106688979853546,"endHours":7.106688979853546,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:06","end":"08:06","startHours":7.106688979853546,"endHours":8.106688979853546,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:06","end":"09:06","startHours":8.106688979853546,"endHours":9.106688979853546,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:06","end":"10:06","startHours":9.106688979853546,"endHours":10.106688979853546,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:06","end":"11:06","startHours":10.106688979853546,"endHours":11.106688979853546,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:06","end":"12:06","startHours":11.106688979853546,"endHours":12.106688979853546,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:06","end":"13:06","startHours":12.106688979853546,"endHours":13.106688979853546,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:06","end":"14:06","startHours":13.106688979853546,"endHours":14.106688979853546,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:06","end":"15:06","startHours":14.106688979853546,"endHours":15.106688979853546,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:06","end":"16:06","startHours":15.106688979853546,"endHours":16.106688979853544,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:06","end":"17:06","startHours":16.106688979853544,"endHours":17.106688979853544,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:06","end":"18:06","startHours":17.106688979853544,"endHours":18.106688979853544,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:06","end":"19:06","startHours":18.106688979853544,"endHours":19.106688979853544,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:06","end":"20:06","startHours":19.106688979853544,"endHours":20.106688979853544,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:06","end":"21:06","startHours":20.106688979853544,"endHours":21.106688979853544,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:06","end":"22:06","startHours":21.106688979853544,"endHours":22.106688979853544,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:06","end":"23:06","startHours":22.106688979853544,"endHours":23.106688979853544,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:06","end":"00:06","startHours":23.106688979853544,"endHours":24.106688979853544,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:06","end":"01:06","startHours":24.106688979853544,"endHours":25.106688979853544,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:06","end":"02:06","startHours":25.106688979853544,"endHours":26.106688979853544,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:06","end":"03:06","startHours":26.106688979853544,"endHours":27.106688979853544,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:06","end":"04:06","startHours":27.106688979853544,"endHours":28.106688979853544,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:06","end":"05:06","startHours":28.106688979853544,"endHours":29.106688979853544,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.34160274453591,"eotMinutes":3.253368877108411,"ayanamsa":26.4228}},"calendars":{"vikram_samvat":2240,"vikram_samvatsara":"Durmukhi","saka_samvat":2105,"saka_samvatsara":"Subhānu","bengali_samvat":1590,"malayalam_era":1359,"nanakshahi_year":714,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Tṛtīyā · Vikram 2240 Durmukhi · Śaka 2105 Subhānu"},"festivals":[],"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 December 17, 2183 CE · Perth, Australia · Vidhyamitra","description":"December 17, 2183 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 05:06, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2183-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2183-12-17","sa":"https://sa.vidhyamitra.com/city/perth/2183-12-17","hi":"https://hi.vidhyamitra.com/city/perth/2183-12-17","x-default":"https://vidhyamitra.com/city/perth/2183-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T13:23:19.531Z","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":"2026-05-31T13:23:19.531Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T13:23:19.531Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}