{"id":"vidhyamitra:city-day:perth:-3137-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/-3137-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3137-12-17","date_display":"December 17, 3138 BCE","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":-3137,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575618.770833,"kali_year":-35,"ahargana":-12846.7292,"sun":{"sidereal_longitude":299.8412,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":288.2792,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":348.438,"elapsed_within_tithi_degrees":0.438},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.2792,"elapsed_within_degrees":8.2792},"yoga":{"number":18,"name":"Varīyān","sum_longitude":228.1203},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"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":-3137,"month":12,"day":17,"hour":6,"minute":30,"calendar":"julian"},"julian_day":575618.770833,"ahargana":-12846.7292,"kali_year":-35,"ayanamsa_lahiri":-47.8942,"grahas":{"sun":{"sidereal_longitude":299.8412,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":288.2792,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false,"latitude":2.4096},"mars":{"sidereal_longitude":105.2121,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":307.1613,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":4.7786,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":298.6752,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":284.6426,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":140.6815,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":320.6815,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"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":-3137,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575618.770833,"kali_year":-35,"ahargana":-12846.7292,"sun":{"sidereal_longitude":299.8412,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":288.2792,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":348.438,"elapsed_within_tithi_degrees":0.438},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":288.2792,"elapsed_within_degrees":8.2792},"yoga":{"number":18,"name":"Varīyān","sum_longitude":228.1203},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.41,"elongation":11.562},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.41,"opposition_distance":168.438}},"eclipse_window_40days":[{"offset_days":1,"type":"solar","occurs":true,"moon_latitude":1.379,"elongation":1.905},{"offset_days":16,"type":"lunar","occurs":true,"moon_latitude":-0.42,"opposition_distance":1.553}]},"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":"05:10","sunsetLocal":"19:17","solarNoonLocal":"12:13","dayLengthHours":14.114504724051052,"dayLengthDisplay":"14 Hours 06 Mins 52 Secs","nightLengthDisplay":"9 Hours 53 Mins 08 Secs","moonriseLocal":"04:31","moonsetLocal":"18:23","rahuKala":{"name":"Rāhu Kāla","start":"12:13","end":"13:59","startHours":12.221743852048192,"endHours":13.986056942554573,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:56","end":"08:42","startHours":6.928804580529048,"endHours":8.69311767103543,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:27","end":"12:13","startHours":10.457430761541811,"endHours":12.221743852048192,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:27","end":"08:56","startHours":8.457875925634578,"endHours":8.928359416436281,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:45","end":"06:08","startHours":5.752595853524794,"endHours":6.128982646166156,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:42","startHours":11.75126036124649,"endHours":12.692227342849893,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:17","end":"04:13","startHours":3.28255752681586,"endHours":4.223524508419263,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:59","end":"05:10","startHours":3.9882827630184123,"endHours":5.164491490022667,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:34","end":"15:31","startHours":14.574161306056702,"endHours":15.515128287660106,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:05","end":"19:29","startHours":19.07899621407372,"endHours":19.478996214073717,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:17","end":"19:52","startHours":19.278996214073718,"endHours":19.867100577575844,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:02","end":"20:47","startHours":19.028996214073718,"endHours":20.778996214073718,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:42","startHours":23.75126036124649,"endHours":24.692227342849893,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:10","end":"06:56","startHours":5.164491490022667,"endHours":6.928804580529048,"quality":"auspicious"},{"name":"Amṛta","start":"06:56","end":"08:42","startHours":6.928804580529048,"endHours":8.69311767103543,"quality":"auspicious"},{"name":"Kāla","start":"08:42","end":"10:27","startHours":8.69311767103543,"endHours":10.457430761541811,"quality":"inauspicious"},{"name":"Śubha","start":"10:27","end":"12:13","startHours":10.457430761541811,"endHours":12.221743852048192,"quality":"auspicious"},{"name":"Roga","start":"12:13","end":"13:59","startHours":12.221743852048192,"endHours":13.986056942554573,"quality":"inauspicious"},{"name":"Udveg","start":"13:59","end":"15:45","startHours":13.986056942554573,"endHours":15.750370033060957,"quality":"inauspicious"},{"name":"Chala","start":"15:45","end":"17:31","startHours":15.750370033060957,"endHours":17.514683123567337,"quality":"neutral"},{"name":"Labha","start":"17:31","end":"19:17","startHours":17.514683123567337,"endHours":19.278996214073718,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:17","end":"20:31","startHours":19.278996214073718,"endHours":20.514683123567337,"quality":"inauspicious"},{"name":"Chala","start":"20:31","end":"21:45","startHours":20.514683123567337,"endHours":21.750370033060953,"quality":"neutral"},{"name":"Labha","start":"21:45","end":"22:59","startHours":21.750370033060953,"endHours":22.986056942554573,"quality":"auspicious"},{"name":"Amṛta","start":"22:59","end":"00:13","startHours":22.986056942554573,"endHours":24.221743852048192,"quality":"auspicious"},{"name":"Kāla","start":"00:13","end":"01:27","startHours":24.221743852048192,"endHours":25.45743076154181,"quality":"inauspicious"},{"name":"Śubha","start":"01:27","end":"02:42","startHours":25.45743076154181,"endHours":26.69311767103543,"quality":"auspicious"},{"name":"Roga","start":"02:42","end":"03:56","startHours":26.69311767103543,"endHours":27.928804580529047,"quality":"inauspicious"},{"name":"Udveg","start":"03:56","end":"05:10","startHours":27.928804580529047,"endHours":29.164491490022666,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:10","end":"06:10","startHours":5.164491490022667,"endHours":6.164491490022667,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:10","end":"07:10","startHours":6.164491490022667,"endHours":7.164491490022667,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:10","end":"08:10","startHours":7.164491490022667,"endHours":8.164491490022666,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:10","end":"09:10","startHours":8.164491490022666,"endHours":9.164491490022666,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:10","end":"10:10","startHours":9.164491490022666,"endHours":10.164491490022666,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:10","end":"11:10","startHours":10.164491490022666,"endHours":11.164491490022666,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:10","end":"12:10","startHours":11.164491490022666,"endHours":12.164491490022666,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:10","end":"13:10","startHours":12.164491490022666,"endHours":13.164491490022666,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:10","end":"14:10","startHours":13.164491490022666,"endHours":14.164491490022666,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:10","end":"15:10","startHours":14.164491490022666,"endHours":15.164491490022666,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:10","end":"16:10","startHours":15.164491490022666,"endHours":16.164491490022666,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:10","end":"17:10","startHours":16.164491490022666,"endHours":17.164491490022666,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:10","end":"18:10","startHours":17.164491490022666,"endHours":18.164491490022666,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:10","end":"19:10","startHours":18.164491490022666,"endHours":19.164491490022666,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:10","end":"20:10","startHours":19.164491490022666,"endHours":20.164491490022666,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:10","end":"21:10","startHours":20.164491490022666,"endHours":21.164491490022666,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:10","end":"22:10","startHours":21.164491490022666,"endHours":22.164491490022666,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:10","end":"23:10","startHours":22.164491490022666,"endHours":23.164491490022666,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:10","end":"00:10","startHours":23.164491490022666,"endHours":24.164491490022666,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:10","end":"01:10","startHours":24.164491490022666,"endHours":25.164491490022666,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:10","end":"02:10","startHours":25.164491490022666,"endHours":26.164491490022666,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:10","end":"03:10","startHours":26.164491490022666,"endHours":27.164491490022666,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:10","end":"04:10","startHours":27.164491490022666,"endHours":28.164491490022666,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:10","end":"05:10","startHours":28.164491490022666,"endHours":29.164491490022666,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.21927229942829,"eotMinutes":3.253368877108411,"ayanamsa":-47.8942}},"calendars":{"vikram_samvat":-3080,"saka_samvat":-3215,"bengali_samvat":-3730,"malayalam_era":-3961,"nanakshahi_year":-4606,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Amāvasyā · Vikram -3080 undefined · Śaka -3215 undefined"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":true,"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, 3138 BCE · Perth, Australia · Vidhyamitra","description":"December 17, 3138 BCE for Perth, Australia: Kṛṣṇa Amāvasyā, sūryodaya 05:10, sūryāsta 19:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/-3137-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/-3137-12-17","sa":"https://sa.vidhyamitra.com/city/perth/-3137-12-17","hi":"https://hi.vidhyamitra.com/city/perth/-3137-12-17","x-default":"https://vidhyamitra.com/city/perth/-3137-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T22:51:06.912Z","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":"2026-05-14T22:51:06.912Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T22:51:06.912Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}