{"id":"vidhyamitra:city-day:perth:2011-12-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2011-12-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-12-23","date_display":"December 23, 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":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455918.770833,"kali_year":5113,"ahargana":1867453.2708,"sun":{"sidereal_longitude":246.4678,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":225.4385,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":338.9706,"elapsed_within_tithi_degrees":2.9706},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":225.4385,"elapsed_within_degrees":12.1051},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.9063},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455918.770833,"ahargana":1867453.2708,"kali_year":5113,"ayanamsa_lahiri":24.0203,"grahas":{"sun":{"sidereal_longitude":246.81600000000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"moon":{"sidereal_longitude":223.8578,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false,"latitude":-0.6179},"mars":{"sidereal_longitude":143.41409999999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":224.76390000000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":6.206000000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":278.6263,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":183.38189999999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":233.3389,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":53.3389,"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":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455918.770833,"kali_year":5113,"ahargana":1867453.2708,"sun":{"sidereal_longitude":246.4678,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":225.4385,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":338.9706,"elapsed_within_tithi_degrees":2.9706},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":225.4385,"elapsed_within_degrees":12.1051},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.9063},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.618,"elongation":21.029},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.618,"opposition_distance":158.971}},"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":"05:09","sunsetLocal":"19:23","solarNoonLocal":"12:16","dayLengthHours":14.239723636565266,"dayLengthDisplay":"14 Hours 14 Mins 23 Secs","nightLengthDisplay":"9 Hours 45 Mins 37 Secs","moonriseLocal":"03:44","moonsetLocal":"17:45","rahuKala":{"name":"Rāhu Kāla","start":"10:29","end":"12:16","startHours":10.48860968390089,"endHours":12.268575138471547,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:50","end":"17:37","startHours":15.828506047612864,"endHours":17.608471502183523,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:56","end":"08:43","startHours":6.928678774759573,"endHours":8.70864422933023,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:28","end":"08:57","startHours":8.471315502054143,"endHours":8.945972956606319,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:45","end":"06:07","startHours":5.7420351383791335,"endHours":6.121761102020874,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:45","startHours":11.793917683919371,"endHours":12.743232593023723,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:15","end":"04:12","startHours":3.250083501980212,"endHours":4.199398411084563,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:58","end":"05:09","startHours":3.9620696838084757,"endHours":5.148713320188914,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:35","startHours":14.641862411232424,"endHours":15.591177320336774,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:11","end":"19:35","startHours":19.18843695675418,"endHours":19.58843695675418,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:23","end":"19:59","startHours":19.38843695675418,"endHours":19.9817587749444,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:08","end":"20:53","startHours":19.13843695675418,"endHours":20.88843695675418,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:45","startHours":23.79391768391937,"endHours":24.743232593023723,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:09","end":"06:56","startHours":5.148713320188914,"endHours":6.928678774759573,"quality":"neutral"},{"name":"Labha","start":"06:56","end":"08:43","startHours":6.928678774759573,"endHours":8.70864422933023,"quality":"auspicious"},{"name":"Amṛta","start":"08:43","end":"10:29","startHours":8.70864422933023,"endHours":10.48860968390089,"quality":"auspicious"},{"name":"Kāla","start":"10:29","end":"12:16","startHours":10.48860968390089,"endHours":12.268575138471547,"quality":"inauspicious"},{"name":"Śubha","start":"12:16","end":"14:03","startHours":12.268575138471547,"endHours":14.048540593042205,"quality":"auspicious"},{"name":"Roga","start":"14:03","end":"15:50","startHours":14.048540593042205,"endHours":15.828506047612864,"quality":"inauspicious"},{"name":"Udveg","start":"15:50","end":"17:37","startHours":15.828506047612864,"endHours":17.608471502183523,"quality":"inauspicious"},{"name":"Chala","start":"17:37","end":"19:23","startHours":17.608471502183523,"endHours":19.38843695675418,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:23","end":"20:37","startHours":19.38843695675418,"endHours":20.608471502183523,"quality":"inauspicious"},{"name":"Udveg","start":"20:37","end":"21:50","startHours":20.608471502183523,"endHours":21.828506047612862,"quality":"inauspicious"},{"name":"Chala","start":"21:50","end":"23:03","startHours":21.828506047612862,"endHours":23.048540593042205,"quality":"neutral"},{"name":"Labha","start":"23:03","end":"00:16","startHours":23.048540593042205,"endHours":24.268575138471547,"quality":"auspicious"},{"name":"Amṛta","start":"00:16","end":"01:29","startHours":24.268575138471547,"endHours":25.48860968390089,"quality":"auspicious"},{"name":"Kāla","start":"01:29","end":"02:43","startHours":25.48860968390089,"endHours":26.708644229330233,"quality":"inauspicious"},{"name":"Śubha","start":"02:43","end":"03:56","startHours":26.708644229330233,"endHours":27.92867877475957,"quality":"auspicious"},{"name":"Roga","start":"03:56","end":"05:09","startHours":27.92867877475957,"endHours":29.148713320188914,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:09","end":"06:09","startHours":5.148713320188914,"endHours":6.148713320188914,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:09","end":"07:09","startHours":6.148713320188914,"endHours":7.148713320188914,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:09","end":"08:09","startHours":7.148713320188914,"endHours":8.148713320188914,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:09","end":"09:09","startHours":8.148713320188914,"endHours":9.148713320188914,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:09","end":"10:09","startHours":9.148713320188914,"endHours":10.148713320188914,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:09","end":"11:09","startHours":10.148713320188914,"endHours":11.148713320188914,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:09","end":"12:09","startHours":11.148713320188914,"endHours":12.148713320188914,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:09","end":"13:09","startHours":12.148713320188914,"endHours":13.148713320188914,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:09","end":"14:09","startHours":13.148713320188914,"endHours":14.148713320188914,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:09","end":"15:09","startHours":14.148713320188914,"endHours":15.148713320188914,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:09","end":"16:09","startHours":15.148713320188914,"endHours":16.148713320188914,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:09","end":"17:09","startHours":16.148713320188914,"endHours":17.148713320188914,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:09","end":"18:09","startHours":17.148713320188914,"endHours":18.148713320188914,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:09","end":"19:09","startHours":18.148713320188914,"endHours":19.148713320188914,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:09","end":"20:09","startHours":19.148713320188914,"endHours":20.148713320188914,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:09","end":"21:09","startHours":20.148713320188914,"endHours":21.148713320188914,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:09","end":"22:09","startHours":21.148713320188914,"endHours":22.148713320188914,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:09","end":"23:09","startHours":22.148713320188914,"endHours":23.148713320188914,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:09","end":"00:09","startHours":23.148713320188914,"endHours":24.148713320188914,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:09","end":"01:09","startHours":24.148713320188914,"endHours":25.148713320188914,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:09","end":"02:09","startHours":25.148713320188914,"endHours":26.148713320188914,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:09","end":"03:09","startHours":26.148713320188914,"endHours":27.148713320188914,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:09","end":"04:09","startHours":27.148713320188914,"endHours":28.148713320188914,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:09","end":"05:09","startHours":28.148713320188914,"endHours":29.148713320188914,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"South-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"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":-23.433854280535993,"eotMinutes":0.4434916917071845,"ayanamsa":24.0203}},"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 Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Caturdaśī · 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},{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 23, 2011 CE · Perth, Australia · Vidhyamitra","description":"December 23, 2011 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 05:09, sūryāsta 19:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2011-12-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2011-12-23","sa":"https://sa.vidhyamitra.com/city/perth/2011-12-23","hi":"https://hi.vidhyamitra.com/city/perth/2011-12-23","x-default":"https://vidhyamitra.com/city/perth/2011-12-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T16:28:39.050Z","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":"2026-05-16T16:28:39.050Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T16:28:39.050Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}