{"id":"vidhyamitra:city-day:perth:2011-12-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2011-12-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-12-25","date_display":"December 25, 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":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455920.770833,"kali_year":5113,"ahargana":1867455.2708,"sun":{"sidereal_longitude":248.5229,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":253.8498,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":5.3269,"elapsed_within_tithi_degrees":5.3269},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":253.8498,"elapsed_within_degrees":0.5165},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":142.3727},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":2011,"month":12,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455920.770833,"ahargana":1867455.2708,"kali_year":5113,"ayanamsa_lahiri":24.0204,"grahas":{"sun":{"sidereal_longitude":248.85332399999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"moon":{"sidereal_longitude":252.62462400000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":1.5831},"mars":{"sidereal_longitude":144.02032399999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":226.88492399999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":6.1920240000000035,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":281.08972399999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":183.53032400000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":233.2329,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":53.2329,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2011,"month":12,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455920.770833,"kali_year":5113,"ahargana":1867455.2708,"sun":{"sidereal_longitude":248.5229,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":253.8498,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":5.3269,"elapsed_within_tithi_degrees":5.3269},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":253.8498,"elapsed_within_degrees":0.5165},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":142.3727},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.583,"elongation":5.327},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.583,"opposition_distance":174.673}},"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":"05:10","sunsetLocal":"19:24","solarNoonLocal":"12:17","dayLengthHours":14.236742838139744,"dayLengthDisplay":"14 Hours 14 Mins 12 Secs","nightLengthDisplay":"9 Hours 45 Mins 48 Secs","moonriseLocal":"05:27","moonsetLocal":"19:37","rahuKala":{"name":"Rāhu Kāla","start":"17:37","end":"19:24","startHours":17.622969513336894,"endHours":19.402562368104363,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:17","end":"14:04","startHours":12.284190949034492,"endHours":14.063783803801961,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:51","end":"17:37","startHours":15.843376658569426,"endHours":17.622969513336894,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:29","end":"08:58","startHours":8.487726192197226,"endHours":8.962284286801886,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:46","end":"06:08","startHours":5.759017148220442,"endHours":6.1386636239041685,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:46","startHours":11.809632854429832,"endHours":12.758749043639149,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:16","end":"04:13","startHours":3.267587151545987,"endHours":4.216703340755304,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:59","end":"05:10","startHours":3.979424293452974,"endHours":5.16581952996462,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:36","startHours":14.656981422057783,"endHours":15.6060976112671,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:12","end":"19:36","startHours":19.202562368104363,"endHours":19.602562368104362,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:24","end":"20:00","startHours":19.402562368104363,"endHours":19.995759986360184,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:09","end":"20:54","startHours":19.152562368104363,"endHours":20.902562368104363,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:46","startHours":23.809632854429832,"endHours":24.758749043639146,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:10","end":"06:57","startHours":5.16581952996462,"endHours":6.945412384732087,"quality":"inauspicious"},{"name":"Chala","start":"06:57","end":"08:44","startHours":6.945412384732087,"endHours":8.725005239499556,"quality":"neutral"},{"name":"Labha","start":"08:44","end":"10:30","startHours":8.725005239499556,"endHours":10.504598094267024,"quality":"auspicious"},{"name":"Amṛta","start":"10:30","end":"12:17","startHours":10.504598094267024,"endHours":12.284190949034492,"quality":"auspicious"},{"name":"Kāla","start":"12:17","end":"14:04","startHours":12.284190949034492,"endHours":14.063783803801961,"quality":"inauspicious"},{"name":"Śubha","start":"14:04","end":"15:51","startHours":14.063783803801961,"endHours":15.843376658569426,"quality":"auspicious"},{"name":"Roga","start":"15:51","end":"17:37","startHours":15.843376658569426,"endHours":17.622969513336894,"quality":"inauspicious"},{"name":"Udveg","start":"17:37","end":"19:24","startHours":17.622969513336894,"endHours":19.402562368104363,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:24","end":"20:37","startHours":19.402562368104363,"endHours":20.622969513336894,"quality":"auspicious"},{"name":"Roga","start":"20:37","end":"21:51","startHours":20.622969513336894,"endHours":21.843376658569426,"quality":"inauspicious"},{"name":"Udveg","start":"21:51","end":"23:04","startHours":21.843376658569426,"endHours":23.063783803801957,"quality":"inauspicious"},{"name":"Chala","start":"23:04","end":"00:17","startHours":23.063783803801957,"endHours":24.28419094903449,"quality":"neutral"},{"name":"Labha","start":"00:17","end":"01:30","startHours":24.28419094903449,"endHours":25.504598094267024,"quality":"auspicious"},{"name":"Amṛta","start":"01:30","end":"02:44","startHours":25.504598094267024,"endHours":26.725005239499556,"quality":"auspicious"},{"name":"Kāla","start":"02:44","end":"03:57","startHours":26.725005239499556,"endHours":27.945412384732087,"quality":"inauspicious"},{"name":"Śubha","start":"03:57","end":"05:10","startHours":27.945412384732087,"endHours":29.16581952996462,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:10","end":"06:10","startHours":5.16581952996462,"endHours":6.16581952996462,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:10","end":"07:10","startHours":6.16581952996462,"endHours":7.16581952996462,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:10","end":"08:10","startHours":7.16581952996462,"endHours":8.165819529964619,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:10","end":"09:10","startHours":8.165819529964619,"endHours":9.165819529964619,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:10","end":"10:10","startHours":9.165819529964619,"endHours":10.165819529964619,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:10","end":"11:10","startHours":10.165819529964619,"endHours":11.165819529964619,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:10","end":"12:10","startHours":11.165819529964619,"endHours":12.165819529964619,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:10","end":"13:10","startHours":12.165819529964619,"endHours":13.165819529964619,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:10","end":"14:10","startHours":13.165819529964619,"endHours":14.165819529964619,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:10","end":"15:10","startHours":14.165819529964619,"endHours":15.165819529964619,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:10","end":"16:10","startHours":15.165819529964619,"endHours":16.16581952996462,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:10","end":"17:10","startHours":16.16581952996462,"endHours":17.16581952996462,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:10","end":"18:10","startHours":17.16581952996462,"endHours":18.16581952996462,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:10","end":"19:10","startHours":18.16581952996462,"endHours":19.16581952996462,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:10","end":"20:10","startHours":19.16581952996462,"endHours":20.16581952996462,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:10","end":"21:10","startHours":20.16581952996462,"endHours":21.16581952996462,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:10","end":"22:10","startHours":21.16581952996462,"endHours":22.16581952996462,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:10","end":"23:10","startHours":22.16581952996462,"endHours":23.16581952996462,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:10","end":"00:10","startHours":23.16581952996462,"endHours":24.16581952996462,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:10","end":"01:10","startHours":24.16581952996462,"endHours":25.16581952996462,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:10","end":"02:10","startHours":25.16581952996462,"endHours":26.16581952996462,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:10","end":"03:10","startHours":26.16581952996462,"endHours":27.16581952996462,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:10","end":"04:10","startHours":27.16581952996462,"endHours":28.16581952996462,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:10","end":"05:10","startHours":28.16581952996462,"endHours":29.16581952996462,"planetary_lord":"Jupiter"}],"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.405269464142933,"eotMinutes":-0.4934569420694592,"ayanamsa":24.0204}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Pratipada · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"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":[]},"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 25, 2011 CE · Perth, Australia · Vidhyamitra","description":"December 25, 2011 CE for Perth, Australia: Śukla Pratipada, sūryodaya 05:10, sūryāsta 19:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2011-12-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2011-12-25","sa":"https://sa.vidhyamitra.com/city/perth/2011-12-25","hi":"https://hi.vidhyamitra.com/city/perth/2011-12-25","x-default":"https://vidhyamitra.com/city/perth/2011-12-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T05:47:21.005Z","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":"2026-05-16T05:47:21.005Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T05:47:21.005Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}