{"id":"vidhyamitra:city-day:perth:2144-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2144-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2144-12-17","date_display":"December 17, 2144 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":2144,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2504490.770833,"kali_year":5246,"ahargana":1916025.2708,"sun":{"sidereal_longitude":238.8551,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":140.003,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.1478,"elapsed_within_tithi_degrees":9.1478},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.003,"elapsed_within_degrees":6.6696},"yoga":{"number":2,"name":"Prīti","sum_longitude":18.8581},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2144,"month":12,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2504490.770833,"ahargana":1916025.2708,"kali_year":5246,"ayanamsa_lahiri":25.878,"grahas":{"sun":{"sidereal_longitude":239.583393,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":138.292393,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false,"latitude":-2.8762},"mars":{"sidereal_longitude":319.765493,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":224.30379300000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":100.69749300000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":true},"venus":{"sidereal_longitude":284.36719300000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":345.224293,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":179.7606,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":359.7606,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":2144,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2504490.770833,"kali_year":5246,"ahargana":1916025.2708,"sun":{"sidereal_longitude":238.8551,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":140.003,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.1478,"elapsed_within_tithi_degrees":9.1478},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.003,"elapsed_within_degrees":6.6696},"yoga":{"number":2,"name":"Prīti","sum_longitude":18.8581},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.876,"elongation":98.852},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.876,"opposition_distance":81.148}},"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":14.231883811818205,"dayLengthDisplay":"14 Hours 13 Mins 55 Secs","nightLengthDisplay":"9 Hours 46 Mins 05 Secs","moonriseLocal":"23:41","moonsetLocal":"11:15","rahuKala":{"name":"Rāhu Kāla","start":"14:00","end":"15:47","startHours":14.000729328525468,"endHours":15.779714805002744,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:06","end":"06:53","startHours":5.10580194613909,"endHours":6.884787422616366,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:40","end":"10:27","startHours":8.663772899093642,"endHours":10.442758375570918,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:54","startHours":8.426574835563338,"endHours":8.900970962623944,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:42","end":"06:05","startHours":5.698797104964849,"endHours":6.0783140066133345,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:42","startHours":11.747347724987586,"endHours":12.696139979108798,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:12","end":"04:09","startHours":3.208217437896663,"endHours":4.157009692017876,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:55","end":"05:06","startHours":3.9198116284875733,"endHours":5.10580194613909,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:33","startHours":14.593724487351228,"endHours":15.542516741472442,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.137685757957296,"endHours":19.537685757957295,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:56","startHours":19.337685757957296,"endHours":19.930680916783054,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.087685757957296,"endHours":20.837685757957296,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:42","startHours":23.747347724987584,"endHours":24.6961399791088,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:06","end":"06:53","startHours":5.10580194613909,"endHours":6.884787422616366,"quality":"auspicious"},{"name":"Roga","start":"06:53","end":"08:40","startHours":6.884787422616366,"endHours":8.663772899093642,"quality":"inauspicious"},{"name":"Udveg","start":"08:40","end":"10:27","startHours":8.663772899093642,"endHours":10.442758375570918,"quality":"inauspicious"},{"name":"Chala","start":"10:27","end":"12:13","startHours":10.442758375570918,"endHours":12.221743852048192,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"14:00","startHours":12.221743852048192,"endHours":14.000729328525468,"quality":"auspicious"},{"name":"Amṛta","start":"14:00","end":"15:47","startHours":14.000729328525468,"endHours":15.779714805002744,"quality":"auspicious"},{"name":"Kāla","start":"15:47","end":"17:34","startHours":15.779714805002744,"endHours":17.55870028148002,"quality":"inauspicious"},{"name":"Śubha","start":"17:34","end":"19:20","startHours":17.55870028148002,"endHours":19.337685757957296,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:20","end":"20:34","startHours":19.337685757957296,"endHours":20.55870028148002,"quality":"auspicious"},{"name":"Kāla","start":"20:34","end":"21:47","startHours":20.55870028148002,"endHours":21.779714805002744,"quality":"inauspicious"},{"name":"Śubha","start":"21:47","end":"23:00","startHours":21.779714805002744,"endHours":23.00072932852547,"quality":"auspicious"},{"name":"Roga","start":"23:00","end":"00:13","startHours":23.00072932852547,"endHours":24.221743852048192,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:27","startHours":24.221743852048192,"endHours":25.442758375570918,"quality":"inauspicious"},{"name":"Chala","start":"01:27","end":"02:40","startHours":25.442758375570918,"endHours":26.663772899093644,"quality":"neutral"},{"name":"Labha","start":"02:40","end":"03:53","startHours":26.663772899093644,"endHours":27.884787422616366,"quality":"auspicious"},{"name":"Amṛta","start":"03:53","end":"05:06","startHours":27.884787422616366,"endHours":29.10580194613909,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:06","end":"06:06","startHours":5.10580194613909,"endHours":6.10580194613909,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:06","end":"07:06","startHours":6.10580194613909,"endHours":7.10580194613909,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:06","end":"08:06","startHours":7.10580194613909,"endHours":8.10580194613909,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:06","end":"09:06","startHours":8.10580194613909,"endHours":9.10580194613909,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:06","end":"10:06","startHours":9.10580194613909,"endHours":10.10580194613909,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:06","end":"11:06","startHours":10.10580194613909,"endHours":11.10580194613909,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:06","end":"12:06","startHours":11.10580194613909,"endHours":12.10580194613909,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:06","end":"13:06","startHours":12.10580194613909,"endHours":13.10580194613909,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:06","end":"14:06","startHours":13.10580194613909,"endHours":14.10580194613909,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:06","end":"15:06","startHours":14.10580194613909,"endHours":15.10580194613909,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:06","end":"16:06","startHours":15.10580194613909,"endHours":16.10580194613909,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:06","end":"17:06","startHours":16.10580194613909,"endHours":17.10580194613909,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:06","end":"18:06","startHours":17.10580194613909,"endHours":18.10580194613909,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:06","end":"19:06","startHours":18.10580194613909,"endHours":19.10580194613909,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:06","end":"20:06","startHours":19.10580194613909,"endHours":20.10580194613909,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:06","end":"21:06","startHours":20.10580194613909,"endHours":21.10580194613909,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:06","end":"22:06","startHours":21.10580194613909,"endHours":22.10580194613909,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:06","end":"23:06","startHours":22.10580194613909,"endHours":23.10580194613909,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:06","end":"00:06","startHours":23.10580194613909,"endHours":24.10580194613909,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:06","end":"01:06","startHours":24.10580194613909,"endHours":25.10580194613909,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:06","end":"02:06","startHours":25.10580194613909,"endHours":26.10580194613909,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:06","end":"03:06","startHours":26.10580194613909,"endHours":27.10580194613909,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:06","end":"04:06","startHours":27.10580194613909,"endHours":28.10580194613909,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:06","end":"05:06","startHours":28.10580194613909,"endHours":29.10580194613909,"planetary_lord":"Moon"}],"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","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Sushira","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":-23.358638647892008,"eotMinutes":3.253368877108411,"ayanamsa":25.878}},"calendars":{"vikram_samvat":2201,"vikram_samvatsara":"Piṅgala","saka_samvat":2066,"saka_samvatsara":"Krodhi","bengali_samvat":1551,"malayalam_era":1320,"nanakshahi_year":675,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","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":"Pauṣa Kṛṣṇa Saptamī · Vikram 2201 Piṅgala · Śaka 2066 Krodhi"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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, 2144 CE · Perth, Australia · Vidhyamitra","description":"December 17, 2144 CE for Perth, Australia: Kṛṣṇa Saptamī, sūryodaya 05:06, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2144-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2144-12-17","sa":"https://sa.vidhyamitra.com/city/perth/2144-12-17","hi":"https://hi.vidhyamitra.com/city/perth/2144-12-17","x-default":"https://vidhyamitra.com/city/perth/2144-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T10:26:03.684Z","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":"2026-06-02T10:26:03.684Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T10:26:03.684Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}