{"id":"vidhyamitra:city-day:perth:2159-01-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2159-01-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2159-01-04","date_display":"January 4, 2159 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":2159,"month":1,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509621.770833,"kali_year":5260,"ahargana":1921156.2708,"sun":{"sidereal_longitude":256.7084,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":73.7667,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.0583,"elapsed_within_tithi_degrees":9.0583},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.7667,"elapsed_within_degrees":7.1},"yoga":{"number":25,"name":"Brahma","sum_longitude":330.475},"karana":{"half_tithi_index":29,"name":"Bava"},"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":2159,"month":1,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2509621.770833,"ahargana":1921156.2708,"kali_year":5260,"ayanamsa_lahiri":26.0742,"grahas":{"sun":{"sidereal_longitude":257.312951,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":73.653551,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":1.0974},"mars":{"sidereal_longitude":190.71885099999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":261.57625099999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":165.431651,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":282.731951,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":179.99145099999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":267.8955,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":87.8955,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"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":2159,"month":1,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509621.770833,"kali_year":5260,"ahargana":1921156.2708,"sun":{"sidereal_longitude":256.7084,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":73.7667,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":177.0583,"elapsed_within_tithi_degrees":9.0583},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.7667,"elapsed_within_degrees":7.1},"yoga":{"number":25,"name":"Brahma","sum_longitude":330.475},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.097,"elongation":177.058},"lunar":{"type":"lunar","occurs":true,"moon_latitude":1.097,"opposition_distance":2.942}},"eclipse_window_40days":[{"offset_days":0,"type":"lunar","occurs":true,"moon_latitude":1.097,"opposition_distance":2.942}]},"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":14.170234824266203,"dayLengthDisplay":"14 Hours 10 Mins 13 Secs","nightLengthDisplay":"9 Hours 49 Mins 47 Secs","moonriseLocal":"19:05","moonsetLocal":"05:08","rahuKala":{"name":"Rāhu Kāla","start":"14:08","end":"15:54","startHours":14.130977800789044,"endHours":15.902257153822319,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:16","end":"07:03","startHours":5.274581035622667,"endHours":7.045860388655942,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:49","end":"10:35","startHours":8.817139741689218,"endHours":10.588419094722493,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:03","startHours":8.58096916128478,"endHours":9.053310322093655,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:52","end":"06:15","startHours":5.8650074866337585,"endHours":6.242880415280857,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:50","startHours":11.887357286946894,"endHours":12.832039608564642,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:23","end":"04:20","startHours":3.385216392387173,"endHours":4.32989871400492,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:06","end":"05:16","startHours":4.093728133600484,"endHours":5.274581035622667,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:40","startHours":14.721404251800134,"endHours":15.66608657341788,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24481585988887,"endHours":19.64481585988887,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44481585988887,"endHours":20.03524231089996,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19481585988887,"endHours":20.94481585988887,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:50","startHours":23.887357286946894,"endHours":24.832039608564642,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:16","end":"07:03","startHours":5.274581035622667,"endHours":7.045860388655942,"quality":"auspicious"},{"name":"Roga","start":"07:03","end":"08:49","startHours":7.045860388655942,"endHours":8.817139741689218,"quality":"inauspicious"},{"name":"Udveg","start":"08:49","end":"10:35","startHours":8.817139741689218,"endHours":10.588419094722493,"quality":"inauspicious"},{"name":"Chala","start":"10:35","end":"12:22","startHours":10.588419094722493,"endHours":12.359698447755768,"quality":"neutral"},{"name":"Labha","start":"12:22","end":"14:08","startHours":12.359698447755768,"endHours":14.130977800789044,"quality":"auspicious"},{"name":"Amṛta","start":"14:08","end":"15:54","startHours":14.130977800789044,"endHours":15.902257153822319,"quality":"auspicious"},{"name":"Kāla","start":"15:54","end":"17:40","startHours":15.902257153822319,"endHours":17.673536506855594,"quality":"inauspicious"},{"name":"Śubha","start":"17:40","end":"19:27","startHours":17.673536506855594,"endHours":19.44481585988887,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:27","end":"20:40","startHours":19.44481585988887,"endHours":20.673536506855594,"quality":"auspicious"},{"name":"Kāla","start":"20:40","end":"21:54","startHours":20.673536506855594,"endHours":21.90225715382232,"quality":"inauspicious"},{"name":"Śubha","start":"21:54","end":"23:08","startHours":21.90225715382232,"endHours":23.130977800789044,"quality":"auspicious"},{"name":"Roga","start":"23:08","end":"00:22","startHours":23.130977800789044,"endHours":24.35969844775577,"quality":"inauspicious"},{"name":"Udveg","start":"00:22","end":"01:35","startHours":24.35969844775577,"endHours":25.588419094722493,"quality":"inauspicious"},{"name":"Chala","start":"01:35","end":"02:49","startHours":25.588419094722493,"endHours":26.817139741689218,"quality":"neutral"},{"name":"Labha","start":"02:49","end":"04:03","startHours":26.817139741689218,"endHours":28.045860388655942,"quality":"auspicious"},{"name":"Amṛta","start":"04:03","end":"05:16","startHours":28.045860388655942,"endHours":29.274581035622667,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:16","end":"06:16","startHours":5.274581035622667,"endHours":6.274581035622667,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:16","end":"07:16","startHours":6.274581035622667,"endHours":7.274581035622667,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:16","end":"08:16","startHours":7.274581035622667,"endHours":8.274581035622667,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:16","end":"09:16","startHours":8.274581035622667,"endHours":9.274581035622667,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:16","end":"10:16","startHours":9.274581035622667,"endHours":10.274581035622667,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:16","end":"11:16","startHours":10.274581035622667,"endHours":11.274581035622667,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:16","end":"12:16","startHours":11.274581035622667,"endHours":12.274581035622667,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:16","end":"13:16","startHours":12.274581035622667,"endHours":13.274581035622667,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:16","end":"14:16","startHours":13.274581035622667,"endHours":14.274581035622667,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:16","end":"15:16","startHours":14.274581035622667,"endHours":15.274581035622667,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:16","end":"16:16","startHours":15.274581035622667,"endHours":16.274581035622667,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:16","end":"17:16","startHours":16.274581035622667,"endHours":17.274581035622667,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:16","end":"18:16","startHours":17.274581035622667,"endHours":18.274581035622667,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:16","end":"19:16","startHours":18.274581035622667,"endHours":19.274581035622667,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:16","end":"20:16","startHours":19.274581035622667,"endHours":20.274581035622667,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:16","end":"21:16","startHours":20.274581035622667,"endHours":21.274581035622667,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:16","end":"22:16","startHours":21.274581035622667,"endHours":22.274581035622667,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:16","end":"23:16","startHours":22.274581035622667,"endHours":23.274581035622667,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:16","end":"00:16","startHours":23.274581035622667,"endHours":24.274581035622667,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:16","end":"01:16","startHours":24.274581035622667,"endHours":25.274581035622667,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:16","end":"02:16","startHours":25.274581035622667,"endHours":26.274581035622667,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:16","end":"03:16","startHours":26.274581035622667,"endHours":27.274581035622667,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:16","end":"04:16","startHours":27.274581035622667,"endHours":28.274581035622667,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:16","end":"05:16","startHours":28.274581035622667,"endHours":29.274581035622667,"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"},"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":-22.763311463017782,"eotMinutes":-5.02390686534617,"ayanamsa":26.0742}},"calendars":{"vikram_samvat":2216,"vikram_samvatsara":"Aṅgirasa","saka_samvat":2081,"saka_samvatsara":"Siddhārthī","bengali_samvat":1566,"malayalam_era":1335,"nanakshahi_year":690,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Pūrṇimā · Vikram 2216 Aṅgirasa · Śaka 2081 Siddhārthī"},"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},{"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":"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, 2159 CE · Perth, Australia · Vidhyamitra","description":"January 4, 2159 CE for Perth, Australia: Śukla Pūrṇimā, sūryodaya 05:16, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2159-01-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2159-01-04","sa":"https://sa.vidhyamitra.com/city/perth/2159-01-04","hi":"https://hi.vidhyamitra.com/city/perth/2159-01-04","x-default":"https://vidhyamitra.com/city/perth/2159-01-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-27T06:39:07.157Z","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":"2026-05-27T06:39:07.157Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-27T06:39:07.157Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}