{"id":"vidhyamitra:city-day:perth:2008-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2008-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2008-12-18","date_display":"December 18, 2008 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":2008,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2454818.770833,"kali_year":5110,"ahargana":1866353.2708,"sun":{"sidereal_longitude":242.1299,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":131.8347,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.7047,"elapsed_within_tithi_degrees":9.7047},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":131.8347,"elapsed_within_degrees":11.8347},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.9646},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":2008,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2454818.770833,"ahargana":1866353.2708,"kali_year":5110,"ayanamsa_lahiri":23.9782,"grahas":{"sun":{"sidereal_longitude":242.508328,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":135.43062799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false,"latitude":-1.5534},"mars":{"sidereal_longitude":238.98712799999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":254.74912799999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":272.295128,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":287.49542799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":147.405128,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":291.6222,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":111.6222,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":2008,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2454818.770833,"kali_year":5110,"ahargana":1866353.2708,"sun":{"sidereal_longitude":242.1299,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":131.8347,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.7047,"elapsed_within_tithi_degrees":9.7047},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":131.8347,"elapsed_within_degrees":11.8347},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.9646},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.553,"elongation":110.295},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.553,"opposition_distance":69.705}},"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":"05:07","sunsetLocal":"19:21","solarNoonLocal":"12:14","dayLengthHours":14.235132915502057,"dayLengthDisplay":"14 Hours 14 Mins 06 Secs","nightLengthDisplay":"9 Hours 45 Mins 54 Secs","moonriseLocal":"23:23","moonsetLocal":"10:48","rahuKala":{"name":"Rāhu Kāla","start":"14:01","end":"15:47","startHours":14.008896158635402,"endHours":15.788287773073158,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:07","end":"06:53","startHours":5.111938086446616,"endHours":6.8913297008843735,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:40","end":"10:27","startHours":8.67072131532213,"endHours":10.450112929759888,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:54","startHours":8.433469100063764,"endHours":8.907973530580499,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:42","end":"06:05","startHours":5.705068624592536,"endHours":6.084672169005924,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:42","startHours":11.75500011368091,"endHours":12.70400897471438,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:13","end":"04:10","startHours":3.2139203643796757,"endHours":4.162929225413146,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:56","end":"05:07","startHours":3.925677010154778,"endHours":5.111938086446616,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:33","startHours":14.602026696781323,"endHours":15.551035557814794,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:09","end":"19:33","startHours":19.147071001948675,"endHours":19.547071001948673,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:21","end":"19:56","startHours":19.347071001948674,"endHours":19.94020154009459,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:06","end":"20:51","startHours":19.097071001948674,"endHours":20.847071001948674,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:42","startHours":23.75500011368091,"endHours":24.70400897471438,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:07","end":"06:53","startHours":5.111938086446616,"endHours":6.8913297008843735,"quality":"auspicious"},{"name":"Roga","start":"06:53","end":"08:40","startHours":6.8913297008843735,"endHours":8.67072131532213,"quality":"inauspicious"},{"name":"Udveg","start":"08:40","end":"10:27","startHours":8.67072131532213,"endHours":10.450112929759888,"quality":"inauspicious"},{"name":"Chala","start":"10:27","end":"12:14","startHours":10.450112929759888,"endHours":12.229504544197646,"quality":"neutral"},{"name":"Labha","start":"12:14","end":"14:01","startHours":12.229504544197646,"endHours":14.008896158635402,"quality":"auspicious"},{"name":"Amṛta","start":"14:01","end":"15:47","startHours":14.008896158635402,"endHours":15.788287773073158,"quality":"auspicious"},{"name":"Kāla","start":"15:47","end":"17:34","startHours":15.788287773073158,"endHours":17.567679387510918,"quality":"inauspicious"},{"name":"Śubha","start":"17:34","end":"19:21","startHours":17.567679387510918,"endHours":19.347071001948674,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:21","end":"20:34","startHours":19.347071001948674,"endHours":20.567679387510918,"quality":"auspicious"},{"name":"Kāla","start":"20:34","end":"21:47","startHours":20.567679387510918,"endHours":21.788287773073158,"quality":"inauspicious"},{"name":"Śubha","start":"21:47","end":"23:01","startHours":21.788287773073158,"endHours":23.0088961586354,"quality":"auspicious"},{"name":"Roga","start":"23:01","end":"00:14","startHours":23.0088961586354,"endHours":24.229504544197646,"quality":"inauspicious"},{"name":"Udveg","start":"00:14","end":"01:27","startHours":24.229504544197646,"endHours":25.45011292975989,"quality":"inauspicious"},{"name":"Chala","start":"01:27","end":"02:40","startHours":25.45011292975989,"endHours":26.670721315322133,"quality":"neutral"},{"name":"Labha","start":"02:40","end":"03:53","startHours":26.670721315322133,"endHours":27.891329700884373,"quality":"auspicious"},{"name":"Amṛta","start":"03:53","end":"05:07","startHours":27.891329700884373,"endHours":29.111938086446617,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:07","end":"06:07","startHours":5.111938086446616,"endHours":6.111938086446616,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:07","end":"07:07","startHours":6.111938086446616,"endHours":7.111938086446616,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:07","end":"08:07","startHours":7.111938086446616,"endHours":8.111938086446617,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:07","end":"09:07","startHours":8.111938086446617,"endHours":9.111938086446617,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:07","end":"10:07","startHours":9.111938086446617,"endHours":10.111938086446617,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:07","end":"11:07","startHours":10.111938086446617,"endHours":11.111938086446617,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:07","end":"12:07","startHours":11.111938086446617,"endHours":12.111938086446617,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:07","end":"13:07","startHours":12.111938086446617,"endHours":13.111938086446617,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:07","end":"14:07","startHours":13.111938086446617,"endHours":14.111938086446617,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:07","end":"15:07","startHours":14.111938086446617,"endHours":15.111938086446617,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:07","end":"16:07","startHours":15.111938086446617,"endHours":16.111938086446617,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:07","end":"17:07","startHours":16.111938086446617,"endHours":17.111938086446617,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:07","end":"18:07","startHours":17.111938086446617,"endHours":18.111938086446617,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:07","end":"19:07","startHours":18.111938086446617,"endHours":19.111938086446617,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:07","end":"20:07","startHours":19.111938086446617,"endHours":20.111938086446617,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:07","end":"21:07","startHours":20.111938086446617,"endHours":21.111938086446617,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:07","end":"22:07","startHours":21.111938086446617,"endHours":22.111938086446617,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:07","end":"23:07","startHours":22.111938086446617,"endHours":23.111938086446617,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:07","end":"00:07","startHours":23.111938086446617,"endHours":24.111938086446617,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:07","end":"01:07","startHours":24.111938086446617,"endHours":25.111938086446617,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:07","end":"02:07","startHours":25.111938086446617,"endHours":26.111938086446617,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:07","end":"03:07","startHours":26.111938086446617,"endHours":27.111938086446617,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:07","end":"04:07","startHours":27.111938086446617,"endHours":28.111938086446617,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:07","end":"05:07","startHours":28.111938086446617,"endHours":29.111938086446617,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","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":"Cara","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.38982418347192,"eotMinutes":2.787727348141232,"ayanamsa":23.9782}},"calendars":{"vikram_samvat":2065,"vikram_samvatsara":"Plava","saka_samvat":1930,"saka_samvatsara":"Sarvadhāri","bengali_samvat":1415,"malayalam_era":1184,"nanakshahi_year":539,"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":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Ṣaṣṭhī · Vikram 2065 Plava · Śaka 1930 Sarvadhāri"},"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 18, 2008 CE · Perth, Australia · Vidhyamitra","description":"December 18, 2008 CE for Perth, Australia: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:07, sūryāsta 19:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2008-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2008-12-18","sa":"https://sa.vidhyamitra.com/city/perth/2008-12-18","hi":"https://hi.vidhyamitra.com/city/perth/2008-12-18","x-default":"https://vidhyamitra.com/city/perth/2008-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T04:56:17.059Z","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":"2026-06-01T04:56:17.059Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T04:56:17.059Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}