{"id":"vidhyamitra:city-day:perth:2144-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2144-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2144-12-13","date_display":"December 13, 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":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2504486.770833,"kali_year":5246,"ahargana":1916021.2708,"sun":{"sidereal_longitude":234.7535,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":86.848,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":212.0945,"elapsed_within_tithi_degrees":8.0945},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":86.848,"elapsed_within_degrees":6.848},"yoga":{"number":25,"name":"Brahma","sum_longitude":321.6015},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2504486.770833,"ahargana":1916021.2708,"kali_year":5246,"ayanamsa_lahiri":25.8778,"grahas":{"sun":{"sidereal_longitude":235.516845,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":85.97184500000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false,"latitude":-4.4933},"mars":{"sidereal_longitude":317.049945,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":218.27754499999992,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":100.95404500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":true},"venus":{"sidereal_longitude":280.57414500000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":345.219045,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":179.9725,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":359.9725,"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":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2504486.770833,"kali_year":5246,"ahargana":1916021.2708,"sun":{"sidereal_longitude":234.7535,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":86.848,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":212.0945,"elapsed_within_tithi_degrees":8.0945},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":86.848,"elapsed_within_degrees":6.848},"yoga":{"number":25,"name":"Brahma","sum_longitude":321.6015},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.493,"elongation":147.906},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.493,"opposition_distance":32.094}},"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":"05:05","sunsetLocal":"19:18","solarNoonLocal":"12:11","dayLengthHours":14.210942686372567,"dayLengthDisplay":"14 Hours 12 Mins 39 Secs","nightLengthDisplay":"9 Hours 47 Mins 21 Secs","moonriseLocal":"21:08","moonsetLocal":"07:19","rahuKala":{"name":"Rāhu Kāla","start":"17:31","end":"19:18","startHours":17.520226003232743,"endHours":19.296593839029313,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:11","end":"13:58","startHours":12.191122495843029,"endHours":13.9674903316396,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:45","end":"17:31","startHours":15.743858167436171,"endHours":17.520226003232743,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:24","end":"08:53","startHours":8.401537779477012,"endHours":8.875235869022763,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:41","end":"06:03","startHours":5.677773764588936,"endHours":6.056732236225538,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:40","startHours":11.717424406297278,"endHours":12.664820585388783,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.1908587944737374,"endHours":4.138254973565242,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:05","startHours":3.9014059287923657,"endHours":5.085651152656746,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:34","end":"15:30","startHours":14.559612943571791,"endHours":15.507009122663295,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:06","end":"19:30","startHours":19.096593839029314,"endHours":19.496593839029313,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:18","end":"19:53","startHours":19.296593839029313,"endHours":19.888716450961503,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:03","end":"20:48","startHours":19.046593839029313,"endHours":20.796593839029313,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:40","startHours":23.71742440629728,"endHours":24.664820585388785,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:05","end":"06:52","startHours":5.085651152656746,"endHours":6.862018988453317,"quality":"inauspicious"},{"name":"Chala","start":"06:52","end":"08:38","startHours":6.862018988453317,"endHours":8.638386824249888,"quality":"neutral"},{"name":"Labha","start":"08:38","end":"10:25","startHours":8.638386824249888,"endHours":10.414754660046459,"quality":"auspicious"},{"name":"Amṛta","start":"10:25","end":"12:11","startHours":10.414754660046459,"endHours":12.191122495843029,"quality":"auspicious"},{"name":"Kāla","start":"12:11","end":"13:58","startHours":12.191122495843029,"endHours":13.9674903316396,"quality":"inauspicious"},{"name":"Śubha","start":"13:58","end":"15:45","startHours":13.9674903316396,"endHours":15.743858167436171,"quality":"auspicious"},{"name":"Roga","start":"15:45","end":"17:31","startHours":15.743858167436171,"endHours":17.520226003232743,"quality":"inauspicious"},{"name":"Udveg","start":"17:31","end":"19:18","startHours":17.520226003232743,"endHours":19.296593839029313,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:18","end":"20:31","startHours":19.296593839029313,"endHours":20.520226003232743,"quality":"auspicious"},{"name":"Roga","start":"20:31","end":"21:45","startHours":20.520226003232743,"endHours":21.743858167436173,"quality":"inauspicious"},{"name":"Udveg","start":"21:45","end":"22:58","startHours":21.743858167436173,"endHours":22.967490331639603,"quality":"inauspicious"},{"name":"Chala","start":"22:58","end":"00:11","startHours":22.967490331639603,"endHours":24.19112249584303,"quality":"neutral"},{"name":"Labha","start":"00:11","end":"01:25","startHours":24.19112249584303,"endHours":25.41475466004646,"quality":"auspicious"},{"name":"Amṛta","start":"01:25","end":"02:38","startHours":25.41475466004646,"endHours":26.63838682424989,"quality":"auspicious"},{"name":"Kāla","start":"02:38","end":"03:52","startHours":26.63838682424989,"endHours":27.862018988453315,"quality":"inauspicious"},{"name":"Śubha","start":"03:52","end":"05:05","startHours":27.862018988453315,"endHours":29.085651152656745,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:05","end":"06:05","startHours":5.085651152656746,"endHours":6.085651152656746,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:05","end":"07:05","startHours":6.085651152656746,"endHours":7.085651152656746,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:05","end":"08:05","startHours":7.085651152656746,"endHours":8.085651152656746,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:05","end":"09:05","startHours":8.085651152656746,"endHours":9.085651152656746,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:05","end":"10:05","startHours":9.085651152656746,"endHours":10.085651152656746,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:05","end":"11:05","startHours":10.085651152656746,"endHours":11.085651152656746,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:05","end":"12:05","startHours":11.085651152656746,"endHours":12.085651152656746,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:05","end":"13:05","startHours":12.085651152656746,"endHours":13.085651152656746,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:05","end":"14:05","startHours":13.085651152656746,"endHours":14.085651152656746,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:05","end":"15:05","startHours":14.085651152656746,"endHours":15.085651152656746,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:05","end":"16:05","startHours":15.085651152656746,"endHours":16.085651152656745,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:05","end":"17:05","startHours":16.085651152656745,"endHours":17.085651152656745,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:05","end":"18:05","startHours":17.085651152656745,"endHours":18.085651152656745,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:05","end":"19:05","startHours":18.085651152656745,"endHours":19.085651152656745,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:05","end":"20:05","startHours":19.085651152656745,"endHours":20.085651152656745,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:05","end":"21:05","startHours":20.085651152656745,"endHours":21.085651152656745,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:05","end":"22:05","startHours":21.085651152656745,"endHours":22.085651152656745,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:05","end":"23:05","startHours":22.085651152656745,"endHours":23.085651152656745,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:05","end":"00:05","startHours":23.085651152656745,"endHours":24.085651152656745,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:05","end":"01:05","startHours":24.085651152656745,"endHours":25.085651152656745,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:05","end":"02:05","startHours":25.085651152656745,"endHours":26.085651152656745,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:05","end":"03:05","startHours":26.085651152656745,"endHours":27.085651152656745,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:05","end":"04:05","startHours":27.085651152656745,"endHours":28.085651152656745,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:05","end":"05:05","startHours":28.085651152656745,"endHours":29.085651152656745,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","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":-23.15718403014206,"eotMinutes":5.090650249418121,"ayanamsa":25.8778}},"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 Tṛtīyā · Vikram 2201 Piṅgala · Śaka 2066 Krodhi"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"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 13, 2144 CE · Perth, Australia · Vidhyamitra","description":"December 13, 2144 CE for Perth, Australia: Kṛṣṇa Tṛtīyā, sūryodaya 05:05, sūryāsta 19:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2144-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2144-12-13","sa":"https://sa.vidhyamitra.com/city/perth/2144-12-13","hi":"https://hi.vidhyamitra.com/city/perth/2144-12-13","x-default":"https://vidhyamitra.com/city/perth/2144-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:18:13.475Z","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":"2026-06-01T08:18:13.475Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:18:13.475Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}