{"id":"vidhyamitra:city-day:perth:2029-01-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2029-01-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2029-01-20","date_display":"January 20, 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":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462156.770833,"kali_year":5130,"ahargana":1873691.2708,"sun":{"sidereal_longitude":275.8564,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":338.4815,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":62.6251,"elapsed_within_tithi_degrees":2.6251},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":338.4815,"elapsed_within_degrees":5.1482},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.3379},"karana":{"half_tithi_index":10,"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":2029,"month":1,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462156.770833,"ahargana":1873691.2708,"kali_year":5130,"ayanamsa_lahiri":24.2589,"grahas":{"sun":{"sidereal_longitude":275.996363,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":335.861563,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":4.3596},"mars":{"sidereal_longitude":165.66806299999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":267.12276299999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":182.39626299999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":260.29276300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":10.327162999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":262.8196,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":82.8196,"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":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462156.770833,"kali_year":5130,"ahargana":1873691.2708,"sun":{"sidereal_longitude":275.8564,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":338.4815,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":62.6251,"elapsed_within_tithi_degrees":2.6251},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":338.4815,"elapsed_within_degrees":5.1482},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.3379},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.36,"elongation":62.625},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.36,"opposition_distance":117.375}},"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":"05:30","sunsetLocal":"19:25","solarNoonLocal":"12:28","dayLengthHours":13.901923049704656,"dayLengthDisplay":"13 Hours 54 Mins 07 Secs","nightLengthDisplay":"10 Hours 05 Mins 53 Secs","moonriseLocal":"10:24","moonsetLocal":"22:30","rahuKala":{"name":"Rāhu Kāla","start":"08:59","end":"10:43","startHours":8.983224293194324,"endHours":10.720964674407405,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:12","end":"15:56","startHours":14.19644543683357,"endHours":15.934185818046652,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:30","end":"07:15","startHours":5.50774353076816,"endHours":7.245483911981242,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:45","end":"09:13","startHours":8.751525575699247,"endHours":9.214923010689402,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:05","end":"06:27","startHours":6.086990324505853,"endHours":6.457708272497977,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:00","end":"12:55","startHours":11.995307620630333,"endHours":12.922102490610643,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:39","end":"04:35","startHours":3.6541537908075385,"endHours":4.58094866078785,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:21","end":"05:30","startHours":4.349249943292771,"endHours":5.50774353076816,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.775692230571265,"endHours":15.702487100551576,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.209666580472817,"endHours":19.609666580472815,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"19:59","startHours":19.409666580472816,"endHours":19.98891337421051,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.159666580472816,"endHours":20.909666580472816,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:00","end":"00:55","startHours":23.99530762063033,"endHours":24.922102490610644,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:30","end":"07:15","startHours":5.50774353076816,"endHours":7.245483911981242,"quality":"inauspicious"},{"name":"Śubha","start":"07:15","end":"08:59","startHours":7.245483911981242,"endHours":8.983224293194324,"quality":"auspicious"},{"name":"Roga","start":"08:59","end":"10:43","startHours":8.983224293194324,"endHours":10.720964674407405,"quality":"inauspicious"},{"name":"Udveg","start":"10:43","end":"12:28","startHours":10.720964674407405,"endHours":12.458705055620488,"quality":"inauspicious"},{"name":"Chala","start":"12:28","end":"14:12","startHours":12.458705055620488,"endHours":14.19644543683357,"quality":"neutral"},{"name":"Labha","start":"14:12","end":"15:56","startHours":14.19644543683357,"endHours":15.934185818046652,"quality":"auspicious"},{"name":"Amṛta","start":"15:56","end":"17:40","startHours":15.934185818046652,"endHours":17.671926199259733,"quality":"auspicious"},{"name":"Kāla","start":"17:40","end":"19:25","startHours":17.671926199259733,"endHours":19.409666580472816,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:25","end":"20:40","startHours":19.409666580472816,"endHours":20.671926199259733,"quality":"auspicious"},{"name":"Amṛta","start":"20:40","end":"21:56","startHours":20.671926199259733,"endHours":21.93418581804665,"quality":"auspicious"},{"name":"Kāla","start":"21:56","end":"23:12","startHours":21.93418581804665,"endHours":23.19644543683357,"quality":"inauspicious"},{"name":"Śubha","start":"23:12","end":"00:28","startHours":23.19644543683357,"endHours":24.458705055620488,"quality":"auspicious"},{"name":"Roga","start":"00:28","end":"01:43","startHours":24.458705055620488,"endHours":25.720964674407405,"quality":"inauspicious"},{"name":"Udveg","start":"01:43","end":"02:59","startHours":25.720964674407405,"endHours":26.983224293194326,"quality":"inauspicious"},{"name":"Chala","start":"02:59","end":"04:15","startHours":26.983224293194326,"endHours":28.245483911981243,"quality":"neutral"},{"name":"Labha","start":"04:15","end":"05:30","startHours":28.245483911981243,"endHours":29.50774353076816,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:30","end":"06:30","startHours":5.50774353076816,"endHours":6.50774353076816,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:30","end":"07:30","startHours":6.50774353076816,"endHours":7.50774353076816,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:30","end":"08:30","startHours":7.50774353076816,"endHours":8.50774353076816,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:30","end":"09:30","startHours":8.50774353076816,"endHours":9.50774353076816,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:30","end":"10:30","startHours":9.50774353076816,"endHours":10.50774353076816,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:30","end":"11:30","startHours":10.50774353076816,"endHours":11.50774353076816,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:30","end":"12:30","startHours":11.50774353076816,"endHours":12.50774353076816,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:30","end":"13:30","startHours":12.50774353076816,"endHours":13.50774353076816,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:30","end":"14:30","startHours":13.50774353076816,"endHours":14.50774353076816,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:30","end":"15:30","startHours":14.50774353076816,"endHours":15.50774353076816,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:30","end":"16:30","startHours":15.50774353076816,"endHours":16.50774353076816,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:30","end":"17:30","startHours":16.50774353076816,"endHours":17.50774353076816,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:30","end":"18:30","startHours":17.50774353076816,"endHours":18.50774353076816,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:30","end":"19:30","startHours":18.50774353076816,"endHours":19.50774353076816,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:30","end":"20:30","startHours":19.50774353076816,"endHours":20.50774353076816,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:30","end":"21:30","startHours":20.50774353076816,"endHours":21.50774353076816,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:30","end":"22:30","startHours":21.50774353076816,"endHours":22.50774353076816,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:30","end":"23:30","startHours":22.50774353076816,"endHours":23.50774353076816,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:30","end":"00:30","startHours":23.50774353076816,"endHours":24.50774353076816,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:30","end":"01:30","startHours":24.50774353076816,"endHours":25.50774353076816,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:30","end":"02:30","startHours":25.50774353076816,"endHours":26.50774353076816,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:30","end":"03:30","startHours":26.50774353076816,"endHours":27.50774353076816,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:30","end":"04:30","startHours":27.50774353076816,"endHours":28.50774353076816,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:30","end":"05:30","startHours":28.50774353076816,"endHours":29.50774353076816,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.093735465010294,"eotMinutes":-10.9643033372293,"ayanamsa":24.2589}},"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 Ṣaṣṭhī · 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}],"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":"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 January 20, 2029 CE · Perth, Australia · Vidhyamitra","description":"January 20, 2029 CE for Perth, Australia: Śukla Ṣaṣṭhī, sūryodaya 05:30, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2029-01-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2029-01-20","sa":"https://sa.vidhyamitra.com/city/perth/2029-01-20","hi":"https://hi.vidhyamitra.com/city/perth/2029-01-20","x-default":"https://vidhyamitra.com/city/perth/2029-01-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T04:38:20.729Z","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":"2026-05-15T04:38:20.729Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T04:38:20.729Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}