{"id":"vidhyamitra:city-day:perth:2018-12-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2018-12-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-12-12","date_display":"December 12, 2018 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":2018,"month":12,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458464.770833,"kali_year":5120,"ahargana":1869999.2708,"sun":{"sidereal_longitude":235.3719,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":291.244,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.8722,"elapsed_within_tithi_degrees":7.8722},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":291.244,"elapsed_within_degrees":11.244},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":166.6159},"karana":{"half_tithi_index":9,"name":"Bālava"},"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":2018,"month":12,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458464.770833,"ahargana":1869999.2708,"kali_year":5120,"ayanamsa_lahiri":24.1177,"grahas":{"sun":{"sidereal_longitude":235.83112400000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":288.3642239999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false,"latitude":-0.9963},"mars":{"sidereal_longitude":322.247924,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":214.779224,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":223.288324,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":191.61412399999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":254.82852400000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":98.4396,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.4396,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2018,"month":12,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458464.770833,"kali_year":5120,"ahargana":1869999.2708,"sun":{"sidereal_longitude":235.3719,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":291.244,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.8722,"elapsed_within_tithi_degrees":7.8722},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":291.244,"elapsed_within_degrees":11.244},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":166.6159},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.996,"elongation":55.872},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.996,"opposition_distance":124.128}},"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":"19:17","solarNoonLocal":"12:11","dayLengthHours":14.200439677655503,"dayLengthDisplay":"14 Hours 12 Mins 02 Secs","nightLengthDisplay":"9 Hours 47 Mins 58 Secs","moonriseLocal":"08:54","moonsetLocal":"22:28","rahuKala":{"name":"Rāhu Kāla","start":"12:11","end":"13:58","startHours":12.183608515648114,"endHours":13.958663475355053,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:52","end":"08:38","startHours":6.8584436365273005,"endHours":8.633498596234238,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:25","end":"12:11","startHours":10.408553555941175,"endHours":12.183608515648114,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:24","end":"08:52","startHours":8.396824601606646,"endHours":8.87017259086183,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:41","end":"06:03","startHours":5.675073663389342,"endHours":6.053752054793488,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:39","startHours":11.710260526392931,"endHours":12.656956504903297,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.189996719799629,"endHours":4.136692698309996,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:05","startHours":3.900018703682404,"endHours":5.083388676820363,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:30","startHours":14.550348461924031,"endHours":15.497044440434397,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:05","end":"19:29","startHours":19.083828354475866,"endHours":19.483828354475865,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:17","end":"19:53","startHours":19.283828354475865,"endHours":19.875513341044844,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:02","end":"20:47","startHours":19.033828354475865,"endHours":20.783828354475865,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:39","startHours":23.71026052639293,"endHours":24.6569565049033,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:05","end":"06:52","startHours":5.083388676820363,"endHours":6.8584436365273005,"quality":"auspicious"},{"name":"Amṛta","start":"06:52","end":"08:38","startHours":6.8584436365273005,"endHours":8.633498596234238,"quality":"auspicious"},{"name":"Kāla","start":"08:38","end":"10:25","startHours":8.633498596234238,"endHours":10.408553555941175,"quality":"inauspicious"},{"name":"Śubha","start":"10:25","end":"12:11","startHours":10.408553555941175,"endHours":12.183608515648114,"quality":"auspicious"},{"name":"Roga","start":"12:11","end":"13:58","startHours":12.183608515648114,"endHours":13.958663475355053,"quality":"inauspicious"},{"name":"Udveg","start":"13:58","end":"15:44","startHours":13.958663475355053,"endHours":15.73371843506199,"quality":"inauspicious"},{"name":"Chala","start":"15:44","end":"17:31","startHours":15.73371843506199,"endHours":17.508773394768927,"quality":"neutral"},{"name":"Labha","start":"17:31","end":"19:17","startHours":17.508773394768927,"endHours":19.283828354475865,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:17","end":"20:31","startHours":19.283828354475865,"endHours":20.508773394768927,"quality":"inauspicious"},{"name":"Chala","start":"20:31","end":"21:44","startHours":20.508773394768927,"endHours":21.733718435061988,"quality":"neutral"},{"name":"Labha","start":"21:44","end":"22:58","startHours":21.733718435061988,"endHours":22.958663475355053,"quality":"auspicious"},{"name":"Amṛta","start":"22:58","end":"00:11","startHours":22.958663475355053,"endHours":24.183608515648114,"quality":"auspicious"},{"name":"Kāla","start":"00:11","end":"01:25","startHours":24.183608515648114,"endHours":25.408553555941175,"quality":"inauspicious"},{"name":"Śubha","start":"01:25","end":"02:38","startHours":25.408553555941175,"endHours":26.63349859623424,"quality":"auspicious"},{"name":"Roga","start":"02:38","end":"03:52","startHours":26.63349859623424,"endHours":27.8584436365273,"quality":"inauspicious"},{"name":"Udveg","start":"03:52","end":"05:05","startHours":27.8584436365273,"endHours":29.083388676820363,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:05","end":"06:05","startHours":5.083388676820363,"endHours":6.083388676820363,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:05","end":"07:05","startHours":6.083388676820363,"endHours":7.083388676820363,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:05","end":"08:05","startHours":7.083388676820363,"endHours":8.083388676820363,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:05","end":"09:05","startHours":8.083388676820363,"endHours":9.083388676820363,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:05","end":"10:05","startHours":9.083388676820363,"endHours":10.083388676820363,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:05","end":"11:05","startHours":10.083388676820363,"endHours":11.083388676820363,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:05","end":"12:05","startHours":11.083388676820363,"endHours":12.083388676820363,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:05","end":"13:05","startHours":12.083388676820363,"endHours":13.083388676820363,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:05","end":"14:05","startHours":13.083388676820363,"endHours":14.083388676820363,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:05","end":"15:05","startHours":14.083388676820363,"endHours":15.083388676820363,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:05","end":"16:05","startHours":15.083388676820363,"endHours":16.083388676820363,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:05","end":"17:05","startHours":16.083388676820363,"endHours":17.083388676820363,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:05","end":"18:05","startHours":17.083388676820363,"endHours":18.083388676820363,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:05","end":"19:05","startHours":18.083388676820363,"endHours":19.083388676820363,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:05","end":"20:05","startHours":19.083388676820363,"endHours":20.083388676820363,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:05","end":"21:05","startHours":20.083388676820363,"endHours":21.083388676820363,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:05","end":"22:05","startHours":21.083388676820363,"endHours":22.083388676820363,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:05","end":"23:05","startHours":22.083388676820363,"endHours":23.083388676820363,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:05","end":"00:05","startHours":23.083388676820363,"endHours":24.083388676820363,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:05","end":"01:05","startHours":24.083388676820363,"endHours":25.083388676820363,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:05","end":"02:05","startHours":25.083388676820363,"endHours":26.083388676820363,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:05","end":"03:05","startHours":26.083388676820363,"endHours":27.083388676820363,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:05","end":"04:05","startHours":27.083388676820363,"endHours":28.083388676820363,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:05","end":"05:05","startHours":28.083388676820363,"endHours":29.083388676820363,"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":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.0558466767538,"eotMinutes":5.541489061113115,"ayanamsa":24.1177}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pañcamī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"precedence":5}],"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 12, 2018 CE · Perth, Australia · Vidhyamitra","description":"December 12, 2018 CE for Perth, Australia: Śukla Pañcamī, sūryodaya 05:05, sūryāsta 19:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2018-12-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2018-12-12","sa":"https://sa.vidhyamitra.com/city/perth/2018-12-12","hi":"https://hi.vidhyamitra.com/city/perth/2018-12-12","x-default":"https://vidhyamitra.com/city/perth/2018-12-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T08:20:20.618Z","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":"2026-05-15T08:20:20.618Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T08:20:20.618Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}