{"id":"vidhyamitra:city-day:perth:2027-12-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2027-12-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2027-12-11","date_display":"December 11, 2027 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2027,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461750.770833,"kali_year":5129,"ahargana":1873285.2708,"sun":{"sidereal_longitude":234.0101,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":19.8259,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.8159,"elapsed_within_tithi_degrees":1.8159},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":19.8259,"elapsed_within_degrees":6.4926},"yoga":{"number":20,"name":"Śiva","sum_longitude":253.836},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2027,"month":12,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461750.770833,"ahargana":1873285.2708,"kali_year":5129,"ayanamsa_lahiri":24.2433,"grahas":{"sun":{"sidereal_longitude":234.502075,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":20.33997499999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false,"latitude":4.4793},"mars":{"sidereal_longitude":257.019275,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":233.58837500000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":151.46317499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":264.615375,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":356.946575,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":284.3315,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":104.3315,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2027,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461750.770833,"kali_year":5129,"ahargana":1873285.2708,"sun":{"sidereal_longitude":234.0101,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":19.8259,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.8159,"elapsed_within_tithi_degrees":1.8159},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":19.8259,"elapsed_within_degrees":6.4926},"yoga":{"number":20,"name":"Śiva","sum_longitude":253.836},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.479,"elongation":145.816},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.479,"opposition_distance":34.184}},"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":"19:16","solarNoonLocal":"12:11","dayLengthHours":14.190495565340749,"dayLengthDisplay":"14 Hours 11 Mins 26 Secs","nightLengthDisplay":"9 Hours 48 Mins 34 Secs","moonriseLocal":"16:33","moonsetLocal":"03:15","rahuKala":{"name":"Rāhu Kāla","start":"08:38","end":"10:24","startHours":8.62854139725593,"endHours":10.402353342923524,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:57","end":"15:43","startHours":13.94997723425871,"endHours":15.723789179926305,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:05","end":"06:51","startHours":5.080917505920743,"endHours":6.854729451588336,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:24","end":"08:52","startHours":8.392033137833584,"endHours":8.865049656678277,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:40","end":"06:03","startHours":5.672188154476608,"endHours":6.050601369552361,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:39","startHours":11.703148769746427,"endHours":12.64918180743581,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.1888514305419764,"endHours":4.13488446823136,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:05","startHours":3.898376208809014,"endHours":5.080917505920743,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:29","startHours":14.541247882814575,"endHours":15.48728092050396,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:04","end":"19:28","startHours":19.071413071261492,"endHours":19.47141307126149,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:16","end":"19:52","startHours":19.27141307126149,"endHours":19.862683719817355,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:01","end":"20:46","startHours":19.02141307126149,"endHours":20.77141307126149,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:39","startHours":23.703148769746427,"endHours":24.64918180743581,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:05","end":"06:51","startHours":5.080917505920743,"endHours":6.854729451588336,"quality":"inauspicious"},{"name":"Śubha","start":"06:51","end":"08:38","startHours":6.854729451588336,"endHours":8.62854139725593,"quality":"auspicious"},{"name":"Roga","start":"08:38","end":"10:24","startHours":8.62854139725593,"endHours":10.402353342923524,"quality":"inauspicious"},{"name":"Udveg","start":"10:24","end":"12:11","startHours":10.402353342923524,"endHours":12.176165288591118,"quality":"inauspicious"},{"name":"Chala","start":"12:11","end":"13:57","startHours":12.176165288591118,"endHours":13.94997723425871,"quality":"neutral"},{"name":"Labha","start":"13:57","end":"15:43","startHours":13.94997723425871,"endHours":15.723789179926305,"quality":"auspicious"},{"name":"Amṛta","start":"15:43","end":"17:30","startHours":15.723789179926305,"endHours":17.497601125593896,"quality":"auspicious"},{"name":"Kāla","start":"17:30","end":"19:16","startHours":17.497601125593896,"endHours":19.27141307126149,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:16","end":"20:30","startHours":19.27141307126149,"endHours":20.4976011255939,"quality":"auspicious"},{"name":"Amṛta","start":"20:30","end":"21:43","startHours":20.4976011255939,"endHours":21.723789179926303,"quality":"auspicious"},{"name":"Kāla","start":"21:43","end":"22:57","startHours":21.723789179926303,"endHours":22.94997723425871,"quality":"inauspicious"},{"name":"Śubha","start":"22:57","end":"00:11","startHours":22.94997723425871,"endHours":24.17616528859112,"quality":"auspicious"},{"name":"Roga","start":"00:11","end":"01:24","startHours":24.17616528859112,"endHours":25.402353342923526,"quality":"inauspicious"},{"name":"Udveg","start":"01:24","end":"02:38","startHours":25.402353342923526,"endHours":26.62854139725593,"quality":"inauspicious"},{"name":"Chala","start":"02:38","end":"03:51","startHours":26.62854139725593,"endHours":27.854729451588337,"quality":"neutral"},{"name":"Labha","start":"03:51","end":"05:05","startHours":27.854729451588337,"endHours":29.080917505920745,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:05","end":"06:05","startHours":5.080917505920743,"endHours":6.080917505920743,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:05","end":"07:05","startHours":6.080917505920743,"endHours":7.080917505920743,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:05","end":"08:05","startHours":7.080917505920743,"endHours":8.080917505920743,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:05","end":"09:05","startHours":8.080917505920743,"endHours":9.080917505920743,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:05","end":"10:05","startHours":9.080917505920743,"endHours":10.080917505920743,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:05","end":"11:05","startHours":10.080917505920743,"endHours":11.080917505920743,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:05","end":"12:05","startHours":11.080917505920743,"endHours":12.080917505920743,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:05","end":"13:05","startHours":12.080917505920743,"endHours":13.080917505920743,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:05","end":"14:05","startHours":13.080917505920743,"endHours":14.080917505920743,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:05","end":"15:05","startHours":14.080917505920743,"endHours":15.080917505920743,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:05","end":"16:05","startHours":15.080917505920743,"endHours":16.080917505920745,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:05","end":"17:05","startHours":16.080917505920745,"endHours":17.080917505920745,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:05","end":"18:05","startHours":17.080917505920745,"endHours":18.080917505920745,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:05","end":"19:05","startHours":18.080917505920745,"endHours":19.080917505920745,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:05","end":"20:05","startHours":19.080917505920745,"endHours":20.080917505920745,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:05","end":"21:05","startHours":20.080917505920745,"endHours":21.080917505920745,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:05","end":"22:05","startHours":21.080917505920745,"endHours":22.080917505920745,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:05","end":"23:05","startHours":22.080917505920745,"endHours":23.080917505920745,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:05","end":"00:05","startHours":23.080917505920745,"endHours":24.080917505920745,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:05","end":"01:05","startHours":24.080917505920745,"endHours":25.080917505920745,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:05","end":"02:05","startHours":25.080917505920745,"endHours":26.080917505920745,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:05","end":"03:05","startHours":26.080917505920745,"endHours":27.080917505920745,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:05","end":"04:05","startHours":27.080917505920745,"endHours":28.080917505920745,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:05","end":"05:05","startHours":28.080917505920745,"endHours":29.080917505920745,"planetary_lord":"Mercury"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.959718678681384,"eotMinutes":5.988082684532823,"ayanamsa":24.2433}},"calendars":{"vikram_samvat":2084,"vikram_samvatsara":"Raudra","saka_samvat":1949,"saka_samvatsara":"Plavaṅga","bengali_samvat":1434,"malayalam_era":1203,"nanakshahi_year":558,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Trayodaśī · Vikram 2084 Raudra · Śaka 1949 Plavaṅga"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Dedicated festival walk for Pradoṣa Vrata is not live yet; Śanivāra (Saturday) — 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 11, 2027 CE · Perth, Australia · Vidhyamitra","description":"December 11, 2027 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:05, sūryāsta 19:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2027-12-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2027-12-11","sa":"https://sa.vidhyamitra.com/city/perth/2027-12-11","hi":"https://hi.vidhyamitra.com/city/perth/2027-12-11","x-default":"https://vidhyamitra.com/city/perth/2027-12-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-11T09:03:24.428Z","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":"2026-09-11T09:03:24.428Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-11T09:03:24.428Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}