{"id":"vidhyamitra:city-day:perth:1912-01-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1912-01-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1912-01-04","date_display":"January 4, 1912 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":1912,"month":1,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419405.770833,"kali_year":5013,"ahargana":1830940.2708,"sun":{"sidereal_longitude":259.7031,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":72.4742,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":172.7711,"elapsed_within_tithi_degrees":4.7711},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.4742,"elapsed_within_degrees":5.8076},"yoga":{"number":25,"name":"Brahma","sum_longitude":332.1773},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1912,"month":1,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2419405.770833,"ahargana":1830940.2708,"kali_year":5013,"ayanamsa_lahiri":22.6238,"grahas":{"sun":{"sidereal_longitude":259.70206499999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":72.25106499999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":4.0609},"mars":{"sidereal_longitude":33.16706499999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":242.75636499999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":223.99406499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":217.71326499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":21.797964999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":7.9733,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":187.9733,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":1912,"month":1,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419405.770833,"kali_year":5013,"ahargana":1830940.2708,"sun":{"sidereal_longitude":259.7031,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":72.4742,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":172.7711,"elapsed_within_tithi_degrees":4.7711},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.4742,"elapsed_within_degrees":5.8076},"yoga":{"number":25,"name":"Brahma","sum_longitude":332.1773},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.061,"elongation":172.771},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.061,"opposition_distance":7.229}},"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":"05:16","sunsetLocal":"19:27","solarNoonLocal":"12:22","dayLengthHours":14.180736326691367,"dayLengthDisplay":"14 Hours 10 Mins 51 Secs","nightLengthDisplay":"9 Hours 49 Mins 09 Secs","moonriseLocal":"18:51","moonsetLocal":"04:52","rahuKala":{"name":"Rāhu Kāla","start":"14:08","end":"15:54","startHours":14.13229048859219,"endHours":15.90488252942861,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:16","end":"07:03","startHours":5.269330284410085,"endHours":7.041922325246506,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:49","end":"10:35","startHours":8.814514366082927,"endHours":10.587106406919347,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:03","startHours":8.578168760638071,"endHours":9.050859971527782,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:52","end":"06:14","startHours":5.8601942980222255,"endHours":6.238347266733995,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:50","startHours":11.887007236866056,"endHours":12.83238965864548,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:23","end":"04:19","startHours":3.378565440851236,"endHours":4.323947862630661,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:05","end":"05:16","startHours":4.087602257185805,"endHours":5.269330284410085,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:40","startHours":14.723154502204329,"endHours":15.668536923983753,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.250066611101452,"endHours":19.65006661110145,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.45006661110145,"endHours":20.040930624713592,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.20006661110145,"endHours":20.95006661110145,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:50","startHours":23.887007236866054,"endHours":24.832389658645482,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:16","end":"07:03","startHours":5.269330284410085,"endHours":7.041922325246506,"quality":"auspicious"},{"name":"Roga","start":"07:03","end":"08:49","startHours":7.041922325246506,"endHours":8.814514366082927,"quality":"inauspicious"},{"name":"Udveg","start":"08:49","end":"10:35","startHours":8.814514366082927,"endHours":10.587106406919347,"quality":"inauspicious"},{"name":"Chala","start":"10:35","end":"12:22","startHours":10.587106406919347,"endHours":12.359698447755768,"quality":"neutral"},{"name":"Labha","start":"12:22","end":"14:08","startHours":12.359698447755768,"endHours":14.13229048859219,"quality":"auspicious"},{"name":"Amṛta","start":"14:08","end":"15:54","startHours":14.13229048859219,"endHours":15.90488252942861,"quality":"auspicious"},{"name":"Kāla","start":"15:54","end":"17:41","startHours":15.90488252942861,"endHours":17.67747457026503,"quality":"inauspicious"},{"name":"Śubha","start":"17:41","end":"19:27","startHours":17.67747457026503,"endHours":19.45006661110145,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:27","end":"20:41","startHours":19.45006661110145,"endHours":20.67747457026503,"quality":"auspicious"},{"name":"Kāla","start":"20:41","end":"21:54","startHours":20.67747457026503,"endHours":21.904882529428612,"quality":"inauspicious"},{"name":"Śubha","start":"21:54","end":"23:08","startHours":21.904882529428612,"endHours":23.13229048859219,"quality":"auspicious"},{"name":"Roga","start":"23:08","end":"00:22","startHours":23.13229048859219,"endHours":24.35969844775577,"quality":"inauspicious"},{"name":"Udveg","start":"00:22","end":"01:35","startHours":24.35969844775577,"endHours":25.587106406919347,"quality":"inauspicious"},{"name":"Chala","start":"01:35","end":"02:49","startHours":25.587106406919347,"endHours":26.814514366082925,"quality":"neutral"},{"name":"Labha","start":"02:49","end":"04:03","startHours":26.814514366082925,"endHours":28.041922325246507,"quality":"auspicious"},{"name":"Amṛta","start":"04:03","end":"05:16","startHours":28.041922325246507,"endHours":29.269330284410085,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:16","end":"06:16","startHours":5.269330284410085,"endHours":6.269330284410085,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:16","end":"07:16","startHours":6.269330284410085,"endHours":7.269330284410085,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:16","end":"08:16","startHours":7.269330284410085,"endHours":8.269330284410085,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:16","end":"09:16","startHours":8.269330284410085,"endHours":9.269330284410085,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:16","end":"10:16","startHours":9.269330284410085,"endHours":10.269330284410085,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:16","end":"11:16","startHours":10.269330284410085,"endHours":11.269330284410085,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:16","end":"12:16","startHours":11.269330284410085,"endHours":12.269330284410085,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:16","end":"13:16","startHours":12.269330284410085,"endHours":13.269330284410085,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:16","end":"14:16","startHours":13.269330284410085,"endHours":14.269330284410085,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:16","end":"15:16","startHours":14.269330284410085,"endHours":15.269330284410085,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:16","end":"16:16","startHours":15.269330284410085,"endHours":16.269330284410085,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:16","end":"17:16","startHours":16.269330284410085,"endHours":17.269330284410085,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:16","end":"18:16","startHours":17.269330284410085,"endHours":18.269330284410085,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:16","end":"19:16","startHours":18.269330284410085,"endHours":19.269330284410085,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:16","end":"20:16","startHours":19.269330284410085,"endHours":20.269330284410085,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:16","end":"21:16","startHours":20.269330284410085,"endHours":21.269330284410085,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:16","end":"22:16","startHours":21.269330284410085,"endHours":22.269330284410085,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:16","end":"23:16","startHours":22.269330284410085,"endHours":23.269330284410085,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:16","end":"00:16","startHours":23.269330284410085,"endHours":24.269330284410085,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:16","end":"01:16","startHours":24.269330284410085,"endHours":25.269330284410085,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:16","end":"02:16","startHours":25.269330284410085,"endHours":26.269330284410085,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:16","end":"03:16","startHours":26.269330284410085,"endHours":27.269330284410085,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:16","end":"04:16","startHours":27.269330284410085,"endHours":28.269330284410085,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:16","end":"05:16","startHours":28.269330284410085,"endHours":29.269330284410085,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.8652048743136,"eotMinutes":-5.02390686534617,"ayanamsa":22.6238}},"calendars":{"vikram_samvat":1969,"vikram_samvatsara":"Krodhana","saka_samvat":1834,"saka_samvatsara":"Paridhāvi","bengali_samvat":1319,"malayalam_era":1088,"nanakshahi_year":443,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Pūrṇimā · Vikram 1969 Krodhana · Śaka 1834 Paridhāvi"},"festivals":[{"id":"paush-purnima","name":"Pauṣa Pūrṇimā (Śākambharī Devī Jayantī)","name_sanskrit":"पौष पूर्णिमा","tradition":"Pan-Hindu","associated_deity":"Devī Śākambharī","significance":"Manifestation of Devī Śākambharī (vegetation-mother).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Pauṣa"},"precedence":3}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"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 January 4, 1912 CE · Perth, Australia · Vidhyamitra","description":"January 4, 1912 CE for Perth, Australia: Śukla Pūrṇimā, sūryodaya 05:16, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1912-01-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1912-01-04","sa":"https://sa.vidhyamitra.com/city/perth/1912-01-04","hi":"https://hi.vidhyamitra.com/city/perth/1912-01-04","x-default":"https://vidhyamitra.com/city/perth/1912-01-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T01:03:57.014Z","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":"2026-06-02T01:03:57.014Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T01:03:57.014Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}