{"id":"vidhyamitra:city-day:perth:2163-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2163-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2163-01-18","date_display":"January 18, 2163 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":2163,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2511096.770833,"kali_year":5264,"ahargana":1922631.2708,"sun":{"sidereal_longitude":271.0601,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":62.684,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.6239,"elapsed_within_tithi_degrees":7.6239},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":62.684,"elapsed_within_degrees":9.3506},"yoga":{"number":26,"name":"Indra","sum_longitude":333.7441},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2163,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2511096.770833,"ahargana":1922631.2708,"kali_year":5264,"ayanamsa_lahiri":26.1306,"grahas":{"sun":{"sidereal_longitude":271.55139499999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":64.07199500000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false,"latitude":-3.5897},"mars":{"sidereal_longitude":229.68489499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":253.333795,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":271.359095,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":228.62969499999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":224.374595,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":189.7429,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":9.7429,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":2163,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2511096.770833,"kali_year":5264,"ahargana":1922631.2708,"sun":{"sidereal_longitude":271.0601,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":62.684,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.6239,"elapsed_within_tithi_degrees":7.6239},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":62.684,"elapsed_within_degrees":9.3506},"yoga":{"number":26,"name":"Indra","sum_longitude":333.7441},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.59,"elongation":151.624},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.59,"opposition_distance":28.376}},"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":"05:28","sunsetLocal":"19:26","solarNoonLocal":"12:27","dayLengthHours":13.954069781034697,"dayLengthDisplay":"13 Hours 57 Mins 15 Secs","nightLengthDisplay":"10 Hours 02 Mins 45 Secs","moonriseLocal":"17:37","moonsetLocal":"03:37","rahuKala":{"name":"Rāhu Kāla","start":"15:56","end":"17:41","startHours":15.936971271620166,"endHours":17.681229994249506,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:58","end":"10:42","startHours":8.959936381102818,"endHours":10.704195103732156,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:27","end":"14:12","startHours":12.448453826361494,"endHours":14.19271254899083,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:12","startHours":8.727368551418907,"endHours":9.19250421078673,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:25","startHours":6.052838510053923,"endHours":6.424947037548182,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.983318166993671,"endHours":12.913589485729316,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:32","startHours":3.610876298372851,"endHours":4.541147617108498,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:19","end":"05:28","startHours":4.308579787424586,"endHours":5.471418935844144,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.774132123200609,"endHours":15.704403441936256,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.225488716878843,"endHours":19.62548871687884,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:00","startHours":19.425488716878842,"endHours":20.00690829108862,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.175488716878842,"endHours":20.925488716878842,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.98331816699367,"endHours":24.913589485729318,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:28","end":"07:13","startHours":5.471418935844144,"endHours":7.215677658473481,"quality":"inauspicious"},{"name":"Udveg","start":"07:13","end":"08:58","startHours":7.215677658473481,"endHours":8.959936381102818,"quality":"inauspicious"},{"name":"Chala","start":"08:58","end":"10:42","startHours":8.959936381102818,"endHours":10.704195103732156,"quality":"neutral"},{"name":"Labha","start":"10:42","end":"12:27","startHours":10.704195103732156,"endHours":12.448453826361494,"quality":"auspicious"},{"name":"Amṛta","start":"12:27","end":"14:12","startHours":12.448453826361494,"endHours":14.19271254899083,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:56","startHours":14.19271254899083,"endHours":15.936971271620166,"quality":"inauspicious"},{"name":"Śubha","start":"15:56","end":"17:41","startHours":15.936971271620166,"endHours":17.681229994249506,"quality":"auspicious"},{"name":"Roga","start":"17:41","end":"19:26","startHours":17.681229994249506,"endHours":19.425488716878842,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:26","end":"20:41","startHours":19.425488716878842,"endHours":20.681229994249506,"quality":"inauspicious"},{"name":"Śubha","start":"20:41","end":"21:56","startHours":20.681229994249506,"endHours":21.936971271620166,"quality":"auspicious"},{"name":"Roga","start":"21:56","end":"23:12","startHours":21.936971271620166,"endHours":23.19271254899083,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:27","startHours":23.19271254899083,"endHours":24.448453826361494,"quality":"inauspicious"},{"name":"Chala","start":"00:27","end":"01:42","startHours":24.448453826361494,"endHours":25.704195103732157,"quality":"neutral"},{"name":"Labha","start":"01:42","end":"02:58","startHours":25.704195103732157,"endHours":26.95993638110282,"quality":"auspicious"},{"name":"Amṛta","start":"02:58","end":"04:13","startHours":26.95993638110282,"endHours":28.21567765847348,"quality":"auspicious"},{"name":"Kāla","start":"04:13","end":"05:28","startHours":28.21567765847348,"endHours":29.471418935844145,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:28","end":"06:28","startHours":5.471418935844144,"endHours":6.471418935844144,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:28","end":"07:28","startHours":6.471418935844144,"endHours":7.471418935844144,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:28","end":"08:28","startHours":7.471418935844144,"endHours":8.471418935844145,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:28","end":"09:28","startHours":8.471418935844145,"endHours":9.471418935844145,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:28","end":"10:28","startHours":9.471418935844145,"endHours":10.471418935844145,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:28","end":"11:28","startHours":10.471418935844145,"endHours":11.471418935844145,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:28","end":"12:28","startHours":11.471418935844145,"endHours":12.471418935844145,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:28","end":"13:28","startHours":12.471418935844145,"endHours":13.471418935844145,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:28","end":"14:28","startHours":13.471418935844145,"endHours":14.471418935844145,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:28","end":"15:28","startHours":14.471418935844145,"endHours":15.471418935844145,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:28","end":"16:28","startHours":15.471418935844145,"endHours":16.471418935844145,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:28","end":"17:28","startHours":16.471418935844145,"endHours":17.471418935844145,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:28","end":"18:28","startHours":17.471418935844145,"endHours":18.471418935844145,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:28","end":"19:28","startHours":18.471418935844145,"endHours":19.471418935844145,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:28","end":"20:28","startHours":19.471418935844145,"endHours":20.471418935844145,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:28","end":"21:28","startHours":20.471418935844145,"endHours":21.471418935844145,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:28","end":"22:28","startHours":21.471418935844145,"endHours":22.471418935844145,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:28","end":"23:28","startHours":22.471418935844145,"endHours":23.471418935844145,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:28","end":"00:28","startHours":23.471418935844145,"endHours":24.471418935844145,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:28","end":"01:28","startHours":24.471418935844145,"endHours":25.471418935844145,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:28","end":"02:28","startHours":25.471418935844145,"endHours":26.471418935844145,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:28","end":"03:28","startHours":26.471418935844145,"endHours":27.471418935844145,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:28","end":"04:28","startHours":27.471418935844145,"endHours":28.471418935844145,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:28","end":"05:28","startHours":28.471418935844145,"endHours":29.471418935844145,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.622417738611546,"eotMinutes":-10.349229581689698,"ayanamsa":26.1306}},"calendars":{"vikram_samvat":2220,"vikram_samvatsara":"Dhātṛ","saka_samvat":2085,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1570,"malayalam_era":1339,"nanakshahi_year":694,"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":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Trayodaśī · Vikram 2220 Dhātṛ · Śaka 2085 Rudhirodgāri"},"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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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, 2163 CE · Perth, Australia · Vidhyamitra","description":"January 18, 2163 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:28, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2163-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2163-01-18","sa":"https://sa.vidhyamitra.com/city/perth/2163-01-18","hi":"https://hi.vidhyamitra.com/city/perth/2163-01-18","x-default":"https://vidhyamitra.com/city/perth/2163-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T05:44:07.884Z","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":"2026-06-01T05:44:07.884Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T05:44:07.884Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}