{"id":"vidhyamitra:city-day:perth:2011-12-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2011-12-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-12-12","date_display":"December 12, 2011 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":2011,"month":12,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455907.770833,"kali_year":5113,"ahargana":1867442.2708,"sun":{"sidereal_longitude":235.1785,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":72.2268,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.0483,"elapsed_within_tithi_degrees":5.0483},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.2268,"elapsed_within_degrees":5.5601},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.4052},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2011,"month":12,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455907.770833,"ahargana":1867442.2708,"kali_year":5113,"ayanamsa_lahiri":24.0199,"grahas":{"sun":{"sidereal_longitude":235.62282000000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":72.03881999999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-1.412},"mars":{"sidereal_longitude":139.61231999999995,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":219.94651999999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":6.530419999999992,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":265.0448200000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":182.47461999999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":233.9217,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":53.9217,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":2011,"month":12,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455907.770833,"kali_year":5113,"ahargana":1867442.2708,"sun":{"sidereal_longitude":235.1785,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":72.2268,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.0483,"elapsed_within_tithi_degrees":5.0483},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.2268,"elapsed_within_degrees":5.5601},"yoga":{"number":24,"name":"Śukla","sum_longitude":307.4052},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.412,"elongation":162.952},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.412,"opposition_distance":17.048}},"eclipse_window_40days":[{"offset_days":-17,"type":"solar","occurs":true,"moon_latitude":-1.467,"elongation":2.03}]},"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":14.198013318908764,"dayLengthDisplay":"14 Hours 11 Mins 53 Secs","nightLengthDisplay":"9 Hours 48 Mins 07 Secs","moonriseLocal":"20:16","moonsetLocal":"06:17","rahuKala":{"name":"Rāhu Kāla","start":"06:52","end":"08:38","startHours":6.859353521057328,"endHours":8.634105185920923,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:25","end":"12:11","startHours":10.40885685078452,"endHours":12.183608515648114,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:58","end":"15:44","startHours":13.958360180511711,"endHours":15.733111845375305,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:24","end":"08:52","startHours":8.397471630605779,"endHours":8.870738741236071,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:41","end":"06:03","startHours":5.676185744481598,"endHours":6.054799432985832,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:39","startHours":11.710341405017822,"endHours":12.656875626278406,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.1915334136725644,"endHours":4.138067634933149,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:05","startHours":3.9014340796180025,"endHours":5.084601856193733,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:30","startHours":14.549944068799576,"endHours":15.49647829006016,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:05","end":"19:29","startHours":19.082615175102497,"endHours":19.482615175102495,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:17","end":"19:52","startHours":19.282615175102496,"endHours":19.87419906339036,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:02","end":"20:47","startHours":19.032615175102496,"endHours":20.782615175102496,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:39","startHours":23.71034140501782,"endHours":24.656875626278406,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:05","end":"06:52","startHours":5.084601856193733,"endHours":6.859353521057328,"quality":"auspicious"},{"name":"Kāla","start":"06:52","end":"08:38","startHours":6.859353521057328,"endHours":8.634105185920923,"quality":"inauspicious"},{"name":"Śubha","start":"08:38","end":"10:25","startHours":8.634105185920923,"endHours":10.40885685078452,"quality":"auspicious"},{"name":"Roga","start":"10:25","end":"12:11","startHours":10.40885685078452,"endHours":12.183608515648114,"quality":"inauspicious"},{"name":"Udveg","start":"12:11","end":"13:58","startHours":12.183608515648114,"endHours":13.958360180511711,"quality":"inauspicious"},{"name":"Chala","start":"13:58","end":"15:44","startHours":13.958360180511711,"endHours":15.733111845375305,"quality":"neutral"},{"name":"Labha","start":"15:44","end":"17:30","startHours":15.733111845375305,"endHours":17.507863510238902,"quality":"auspicious"},{"name":"Amṛta","start":"17:30","end":"19:17","startHours":17.507863510238902,"endHours":19.282615175102496,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:17","end":"20:30","startHours":19.282615175102496,"endHours":20.5078635102389,"quality":"neutral"},{"name":"Labha","start":"20:30","end":"21:44","startHours":20.5078635102389,"endHours":21.733111845375305,"quality":"auspicious"},{"name":"Amṛta","start":"21:44","end":"22:58","startHours":21.733111845375305,"endHours":22.95836018051171,"quality":"auspicious"},{"name":"Kāla","start":"22:58","end":"00:11","startHours":22.95836018051171,"endHours":24.183608515648114,"quality":"inauspicious"},{"name":"Śubha","start":"00:11","end":"01:25","startHours":24.183608515648114,"endHours":25.408856850784517,"quality":"auspicious"},{"name":"Roga","start":"01:25","end":"02:38","startHours":25.408856850784517,"endHours":26.634105185920923,"quality":"inauspicious"},{"name":"Udveg","start":"02:38","end":"03:52","startHours":26.634105185920923,"endHours":27.85935352105733,"quality":"inauspicious"},{"name":"Chala","start":"03:52","end":"05:05","startHours":27.85935352105733,"endHours":29.084601856193732,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:05","end":"06:05","startHours":5.084601856193733,"endHours":6.084601856193733,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:05","end":"07:05","startHours":6.084601856193733,"endHours":7.084601856193733,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:05","end":"08:05","startHours":7.084601856193733,"endHours":8.084601856193732,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:05","end":"09:05","startHours":8.084601856193732,"endHours":9.084601856193732,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:05","end":"10:05","startHours":9.084601856193732,"endHours":10.084601856193732,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:05","end":"11:05","startHours":10.084601856193732,"endHours":11.084601856193732,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:05","end":"12:05","startHours":11.084601856193732,"endHours":12.084601856193732,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:05","end":"13:05","startHours":12.084601856193732,"endHours":13.084601856193732,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:05","end":"14:05","startHours":13.084601856193732,"endHours":14.084601856193732,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:05","end":"15:05","startHours":14.084601856193732,"endHours":15.084601856193732,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:05","end":"16:05","startHours":15.084601856193732,"endHours":16.084601856193732,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:05","end":"17:05","startHours":16.084601856193732,"endHours":17.084601856193732,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:05","end":"18:05","startHours":17.084601856193732,"endHours":18.084601856193732,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:05","end":"19:05","startHours":18.084601856193732,"endHours":19.084601856193732,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:05","end":"20:05","startHours":19.084601856193732,"endHours":20.084601856193732,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:05","end":"21:05","startHours":20.084601856193732,"endHours":21.084601856193732,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:05","end":"22:05","startHours":21.084601856193732,"endHours":22.084601856193732,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:05","end":"23:05","startHours":22.084601856193732,"endHours":23.084601856193732,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:05","end":"00:05","startHours":23.084601856193732,"endHours":24.084601856193732,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:05","end":"01:05","startHours":24.084601856193732,"endHours":25.084601856193732,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:05","end":"02:05","startHours":25.084601856193732,"endHours":26.084601856193732,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:05","end":"03:05","startHours":26.084601856193732,"endHours":27.084601856193732,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:05","end":"04:05","startHours":27.084601856193732,"endHours":28.084601856193732,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:05","end":"05:05","startHours":28.084601856193732,"endHours":29.084601856193732,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","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":-23.03240790817942,"eotMinutes":5.541489061113115,"ayanamsa":24.0199}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Dvitīyā · Vikram 2068 Krodhi · Śaka 1933 Khara"},"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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, 2011 CE · Perth, Australia · Vidhyamitra","description":"December 12, 2011 CE for Perth, Australia: Kṛṣṇa Dvitīyā, sūryodaya 05:05, sūryāsta 19:17.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2011-12-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2011-12-12","sa":"https://sa.vidhyamitra.com/city/perth/2011-12-12","hi":"https://hi.vidhyamitra.com/city/perth/2011-12-12","x-default":"https://vidhyamitra.com/city/perth/2011-12-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T00:17:43.821Z","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":"2026-05-16T00:17:43.821Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T00:17:43.821Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}