{"id":"vidhyamitra:city-day:perth:2029-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2029-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2029-01-18","date_display":"January 18, 2029 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":2029,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462154.770833,"kali_year":5130,"ahargana":1873689.2708,"sun":{"sidereal_longitude":273.8044,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":314.4838,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.6794,"elapsed_within_tithi_degrees":4.6794},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.4838,"elapsed_within_degrees":7.8171},"yoga":{"number":18,"name":"Varīyān","sum_longitude":228.2882},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":2029,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462154.770833,"ahargana":1873689.2708,"kali_year":5130,"ayanamsa_lahiri":24.2588,"grahas":{"sun":{"sidereal_longitude":273.96043899999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":311.8663389999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":3.5232},"mars":{"sidereal_longitude":165.14073899999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":269.549039,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":182.25843899999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":257.784539,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":10.276339000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":262.9256,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":82.9256,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":2029,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462154.770833,"kali_year":5130,"ahargana":1873689.2708,"sun":{"sidereal_longitude":273.8044,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":314.4838,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.6794,"elapsed_within_tithi_degrees":4.6794},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.4838,"elapsed_within_degrees":7.8171},"yoga":{"number":18,"name":"Varīyān","sum_longitude":228.2882},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.523,"elongation":40.679},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.523,"opposition_distance":139.321}},"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":"05:29","sunsetLocal":"19:25","solarNoonLocal":"12:27","dayLengthHours":13.943481122680339,"dayLengthDisplay":"13 Hours 56 Mins 37 Secs","nightLengthDisplay":"10 Hours 03 Mins 23 Secs","moonriseLocal":"08:32","moonsetLocal":"21:25","rahuKala":{"name":"Rāhu Kāla","start":"14:11","end":"15:56","startHours":14.191388966696536,"endHours":15.934324107031578,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:29","end":"07:13","startHours":5.476713265021324,"endHours":7.2196484053563665,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:58","end":"10:42","startHours":8.962583545691409,"endHours":10.705518686026451,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:12","startHours":8.730192193646737,"endHours":9.194974897736081,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:26","startHours":6.057691645133005,"endHours":6.429517808404481,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.983671122272149,"endHours":12.913236530450838,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:33","startHours":3.6175824486639456,"endHours":4.547147856842635,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:19","end":"05:29","startHours":4.314756504797963,"endHours":5.476713265021324,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.772367346808217,"endHours":15.701932754986906,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.220194387701664,"endHours":19.620194387701662,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"20:00","startHours":19.420194387701663,"endHours":20.001172767813344,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.170194387701663,"endHours":20.920194387701663,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.98367112227215,"endHours":24.91323653045084,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:29","end":"07:13","startHours":5.476713265021324,"endHours":7.2196484053563665,"quality":"auspicious"},{"name":"Roga","start":"07:13","end":"08:58","startHours":7.2196484053563665,"endHours":8.962583545691409,"quality":"inauspicious"},{"name":"Udveg","start":"08:58","end":"10:42","startHours":8.962583545691409,"endHours":10.705518686026451,"quality":"inauspicious"},{"name":"Chala","start":"10:42","end":"12:27","startHours":10.705518686026451,"endHours":12.448453826361494,"quality":"neutral"},{"name":"Labha","start":"12:27","end":"14:11","startHours":12.448453826361494,"endHours":14.191388966696536,"quality":"auspicious"},{"name":"Amṛta","start":"14:11","end":"15:56","startHours":14.191388966696536,"endHours":15.934324107031578,"quality":"auspicious"},{"name":"Kāla","start":"15:56","end":"17:41","startHours":15.934324107031578,"endHours":17.67725924736662,"quality":"inauspicious"},{"name":"Śubha","start":"17:41","end":"19:25","startHours":17.67725924736662,"endHours":19.420194387701663,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:25","end":"20:41","startHours":19.420194387701663,"endHours":20.67725924736662,"quality":"auspicious"},{"name":"Kāla","start":"20:41","end":"21:56","startHours":20.67725924736662,"endHours":21.93432410703158,"quality":"inauspicious"},{"name":"Śubha","start":"21:56","end":"23:11","startHours":21.93432410703158,"endHours":23.191388966696536,"quality":"auspicious"},{"name":"Roga","start":"23:11","end":"00:27","startHours":23.191388966696536,"endHours":24.448453826361494,"quality":"inauspicious"},{"name":"Udveg","start":"00:27","end":"01:42","startHours":24.448453826361494,"endHours":25.70551868602645,"quality":"inauspicious"},{"name":"Chala","start":"01:42","end":"02:58","startHours":25.70551868602645,"endHours":26.96258354569141,"quality":"neutral"},{"name":"Labha","start":"02:58","end":"04:13","startHours":26.96258354569141,"endHours":28.219648405356367,"quality":"auspicious"},{"name":"Amṛta","start":"04:13","end":"05:29","startHours":28.219648405356367,"endHours":29.476713265021324,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:29","end":"06:29","startHours":5.476713265021324,"endHours":6.476713265021324,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:29","end":"07:29","startHours":6.476713265021324,"endHours":7.476713265021324,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:29","end":"08:29","startHours":7.476713265021324,"endHours":8.476713265021324,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:29","end":"09:29","startHours":8.476713265021324,"endHours":9.476713265021324,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:29","end":"10:29","startHours":9.476713265021324,"endHours":10.476713265021324,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:29","end":"11:29","startHours":10.476713265021324,"endHours":11.476713265021324,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:29","end":"12:29","startHours":11.476713265021324,"endHours":12.476713265021324,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:29","end":"13:29","startHours":12.476713265021324,"endHours":13.476713265021324,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:29","end":"14:29","startHours":13.476713265021324,"endHours":14.476713265021324,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:29","end":"15:29","startHours":14.476713265021324,"endHours":15.476713265021324,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:29","end":"16:29","startHours":15.476713265021324,"endHours":16.476713265021324,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:29","end":"17:29","startHours":16.476713265021324,"endHours":17.476713265021324,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:29","end":"18:29","startHours":17.476713265021324,"endHours":18.476713265021324,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:29","end":"19:29","startHours":18.476713265021324,"endHours":19.476713265021324,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:29","end":"20:29","startHours":19.476713265021324,"endHours":20.476713265021324,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:29","end":"21:29","startHours":20.476713265021324,"endHours":21.476713265021324,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:29","end":"22:29","startHours":21.476713265021324,"endHours":22.476713265021324,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:29","end":"23:29","startHours":22.476713265021324,"endHours":23.476713265021324,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:29","end":"00:29","startHours":23.476713265021324,"endHours":24.476713265021324,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:29","end":"01:29","startHours":24.476713265021324,"endHours":25.476713265021324,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:29","end":"02:29","startHours":25.476713265021324,"endHours":26.476713265021324,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:29","end":"03:29","startHours":26.476713265021324,"endHours":27.476713265021324,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:29","end":"04:29","startHours":27.476713265021324,"endHours":28.476713265021324,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:29","end":"05:29","startHours":28.476713265021324,"endHours":29.476713265021324,"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","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.515444846304085,"eotMinutes":-10.349229581689698,"ayanamsa":24.2588}},"calendars":{"vikram_samvat":2086,"vikram_samvatsara":"Dundubhi","saka_samvat":1951,"saka_samvatsara":"Saumya","bengali_samvat":1436,"malayalam_era":1205,"nanakshahi_year":560,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 2086 Dundubhi · Śaka 1951 Saumya"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":[]},"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 18, 2029 CE · Perth, Australia · Vidhyamitra","description":"January 18, 2029 CE for Perth, Australia: Śukla Caturthī, sūryodaya 05:29, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2029-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2029-01-18","sa":"https://sa.vidhyamitra.com/city/perth/2029-01-18","hi":"https://hi.vidhyamitra.com/city/perth/2029-01-18","x-default":"https://vidhyamitra.com/city/perth/2029-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T03:28:06.555Z","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":"2026-05-15T03:28:06.555Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T03:28:06.555Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}