{"id":"vidhyamitra:city-day:perth:2024-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2024-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2024-01-18","date_display":"January 18, 2024 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":2024,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460327.770833,"kali_year":5125,"ahargana":1871862.2708,"sun":{"sidereal_longitude":273.0796,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":358.8276,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":85.748,"elapsed_within_tithi_degrees":1.748},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.8276,"elapsed_within_degrees":12.1609},"yoga":{"number":21,"name":"Siddha","sum_longitude":271.9072},"karana":{"half_tithi_index":14,"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":2024,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460327.770833,"ahargana":1871862.2708,"kali_year":5125,"ayanamsa_lahiri":24.1889,"grahas":{"sun":{"sidereal_longitude":273.22984399999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":1.6490440000000035,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":-0.0707},"mars":{"sidereal_longitude":255.577544,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":249.934844,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":11.962943999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":238.93464400000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":310.809844,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":359.7289,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":179.7289,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"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":2024,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460327.770833,"kali_year":5125,"ahargana":1871862.2708,"sun":{"sidereal_longitude":273.0796,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":358.8276,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":85.748,"elapsed_within_tithi_degrees":1.748},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.8276,"elapsed_within_degrees":12.1609},"yoga":{"number":21,"name":"Siddha","sum_longitude":271.9072},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.071,"elongation":85.748},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.071,"opposition_distance":94.252}},"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":13.95919939602311,"dayLengthDisplay":"13 Hours 57 Mins 33 Secs","nightLengthDisplay":"10 Hours 02 Mins 27 Secs","moonriseLocal":"12:43","moonsetLocal":"23:58","rahuKala":{"name":"Rāhu Kāla","start":"14:12","end":"15:56","startHours":14.193353750864382,"endHours":15.938253675367271,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:28","end":"07:13","startHours":5.46885412834994,"endHours":7.213754052852829,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:58","end":"10:42","startHours":8.958653977355716,"endHours":10.703553901858605,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:11","startHours":8.726000654088665,"endHours":9.19130730062277,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:25","startHours":6.050487436517569,"endHours":6.422732753744852,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.98314717982739,"endHours":12.913760472895598,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:36","end":"04:32","startHours":3.6076275422135256,"endHours":4.538240835281733,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:28","startHours":4.3055875120146805,"endHours":5.46885412834994,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.774987059032014,"endHours":15.705600352100221,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.22805352437305,"endHours":19.628053524373048,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:01","startHours":19.42805352437305,"endHours":20.009686832540677,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.17805352437305,"endHours":20.92805352437305,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.98314717982739,"endHours":24.913760472895596,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:28","end":"07:13","startHours":5.46885412834994,"endHours":7.213754052852829,"quality":"auspicious"},{"name":"Roga","start":"07:13","end":"08:58","startHours":7.213754052852829,"endHours":8.958653977355716,"quality":"inauspicious"},{"name":"Udveg","start":"08:58","end":"10:42","startHours":8.958653977355716,"endHours":10.703553901858605,"quality":"inauspicious"},{"name":"Chala","start":"10:42","end":"12:27","startHours":10.703553901858605,"endHours":12.448453826361494,"quality":"neutral"},{"name":"Labha","start":"12:27","end":"14:12","startHours":12.448453826361494,"endHours":14.193353750864382,"quality":"auspicious"},{"name":"Amṛta","start":"14:12","end":"15:56","startHours":14.193353750864382,"endHours":15.938253675367271,"quality":"auspicious"},{"name":"Kāla","start":"15:56","end":"17:41","startHours":15.938253675367271,"endHours":17.68315359987016,"quality":"inauspicious"},{"name":"Śubha","start":"17:41","end":"19:26","startHours":17.68315359987016,"endHours":19.42805352437305,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:26","end":"20:41","startHours":19.42805352437305,"endHours":20.68315359987016,"quality":"auspicious"},{"name":"Kāla","start":"20:41","end":"21:56","startHours":20.68315359987016,"endHours":21.93825367536727,"quality":"inauspicious"},{"name":"Śubha","start":"21:56","end":"23:12","startHours":21.93825367536727,"endHours":23.193353750864382,"quality":"auspicious"},{"name":"Roga","start":"23:12","end":"00:27","startHours":23.193353750864382,"endHours":24.448453826361494,"quality":"inauspicious"},{"name":"Udveg","start":"00:27","end":"01:42","startHours":24.448453826361494,"endHours":25.703553901858605,"quality":"inauspicious"},{"name":"Chala","start":"01:42","end":"02:58","startHours":25.703553901858605,"endHours":26.958653977355716,"quality":"neutral"},{"name":"Labha","start":"02:58","end":"04:13","startHours":26.958653977355716,"endHours":28.213754052852828,"quality":"auspicious"},{"name":"Amṛta","start":"04:13","end":"05:28","startHours":28.213754052852828,"endHours":29.46885412834994,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:28","end":"06:28","startHours":5.46885412834994,"endHours":6.46885412834994,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:28","end":"07:28","startHours":6.46885412834994,"endHours":7.46885412834994,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:28","end":"08:28","startHours":7.46885412834994,"endHours":8.468854128349939,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:28","end":"09:28","startHours":8.468854128349939,"endHours":9.468854128349939,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:28","end":"10:28","startHours":9.468854128349939,"endHours":10.468854128349939,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:28","end":"11:28","startHours":10.468854128349939,"endHours":11.468854128349939,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:28","end":"12:28","startHours":11.468854128349939,"endHours":12.468854128349939,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:28","end":"13:28","startHours":12.468854128349939,"endHours":13.468854128349939,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:28","end":"14:28","startHours":13.468854128349939,"endHours":14.468854128349939,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:28","end":"15:28","startHours":14.468854128349939,"endHours":15.468854128349939,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:28","end":"16:28","startHours":15.468854128349939,"endHours":16.46885412834994,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:28","end":"17:28","startHours":16.46885412834994,"endHours":17.46885412834994,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:28","end":"18:28","startHours":17.46885412834994,"endHours":18.46885412834994,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:28","end":"19:28","startHours":18.46885412834994,"endHours":19.46885412834994,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:28","end":"20:28","startHours":19.46885412834994,"endHours":20.46885412834994,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:28","end":"21:28","startHours":20.46885412834994,"endHours":21.46885412834994,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:28","end":"22:28","startHours":21.46885412834994,"endHours":22.46885412834994,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:28","end":"23:28","startHours":22.46885412834994,"endHours":23.46885412834994,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:28","end":"00:28","startHours":23.46885412834994,"endHours":24.46885412834994,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:28","end":"01:28","startHours":24.46885412834994,"endHours":25.46885412834994,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:28","end":"02:28","startHours":25.46885412834994,"endHours":26.46885412834994,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:28","end":"03:28","startHours":26.46885412834994,"endHours":27.46885412834994,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:28","end":"04:28","startHours":27.46885412834994,"endHours":28.46885412834994,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:28","end":"05:28","startHours":28.46885412834994,"endHours":29.46885412834994,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Lumba","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":-20.674170464743852,"eotMinutes":-10.349229581689698,"ayanamsa":24.1889}},"calendars":{"vikram_samvat":2081,"vikram_samvatsara":"Piṅgala","saka_samvat":1946,"saka_samvatsara":"Krodhi","bengali_samvat":1431,"malayalam_era":1200,"nanakshahi_year":555,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Aṣṭamī · Vikram 2081 Piṅgala · Śaka 1946 Krodhi"},"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":"bhishma-ashtami","name":"Bhīṣmāṣṭamī","name_sanskrit":"भीष्माष्टमी","tradition":"Pan-Hindu","associated_deity":"Bhīṣma Pitāmaha","significance":"Bhīṣma's mahaprasthāna anniversary (Māgha Śukla 8); Bhīṣma-tarpaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Mahābhārata, Anuśāsana Parva"]},{"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":"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":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 18, 2024 CE · Perth, Australia · Vidhyamitra","description":"January 18, 2024 CE for Perth, Australia: Śukla Aṣṭamī, sūryodaya 05:28, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2024-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2024-01-18","sa":"https://sa.vidhyamitra.com/city/perth/2024-01-18","hi":"https://hi.vidhyamitra.com/city/perth/2024-01-18","x-default":"https://vidhyamitra.com/city/perth/2024-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T23:33:03.951Z","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":"2026-05-14T23:33:03.951Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T23:33:03.951Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}