{"id":"vidhyamitra:city-day:perth:1978-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1978-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-01-18","date_display":"January 18, 1978 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":1978,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443526.770833,"kali_year":5079,"ahargana":1855061.2708,"sun":{"sidereal_longitude":274.0061,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":22.8486,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":108.8425,"elapsed_within_tithi_degrees":0.8425},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":22.8486,"elapsed_within_degrees":9.5152},"yoga":{"number":23,"name":"Śubha","sum_longitude":296.8547},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1978,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443526.770833,"ahargana":1855061.2708,"kali_year":5079,"ayanamsa_lahiri":23.5463,"grahas":{"sun":{"sidereal_longitude":274.0416660000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":25.384266000000025,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":-2.444},"mars":{"sidereal_longitude":99.98506600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":251.70386600000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":64.03686600000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":273.353566,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":125.72306600000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":169.9267,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":349.9267,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":1978,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443526.770833,"kali_year":5079,"ahargana":1855061.2708,"sun":{"sidereal_longitude":274.0061,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":22.8486,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":108.8425,"elapsed_within_tithi_degrees":0.8425},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":22.8486,"elapsed_within_degrees":9.5152},"yoga":{"number":23,"name":"Śubha","sum_longitude":296.8547},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.444,"elongation":108.842},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.444,"opposition_distance":71.158}},"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":13.955906463257834,"dayLengthDisplay":"13 Hours 57 Mins 21 Secs","nightLengthDisplay":"10 Hours 02 Mins 39 Secs","moonriseLocal":"14:35","moonsetLocal":"01:10","rahuKala":{"name":"Rāhu Kāla","start":"12:27","end":"14:12","startHours":12.448453826361494,"endHours":14.192942134268723,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:13","end":"08:58","startHours":7.214988902639805,"endHours":8.959477210547034,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:42","end":"12:27","startHours":10.703965518454265,"endHours":12.448453826361494,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:12","startHours":8.726878769492737,"endHours":9.192075651601332,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:25","startHours":6.051996697368319,"endHours":6.424154203055195,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.983256944252899,"endHours":12.913650708470088,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:32","startHours":3.6097130662981973,"endHours":4.540106830515387,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:28","startHours":4.3075083894610895,"endHours":5.4705005947325755,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.774438236904466,"endHours":15.704832001121655,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.22640705799041,"endHours":19.62640705799041,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:00","startHours":19.42640705799041,"endHours":20.007903160626153,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.17640705799041,"endHours":20.92640705799041,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.9832569442529,"endHours":24.913650708470087,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:28","end":"07:13","startHours":5.4705005947325755,"endHours":7.214988902639805,"quality":"auspicious"},{"name":"Amṛta","start":"07:13","end":"08:58","startHours":7.214988902639805,"endHours":8.959477210547034,"quality":"auspicious"},{"name":"Kāla","start":"08:58","end":"10:42","startHours":8.959477210547034,"endHours":10.703965518454265,"quality":"inauspicious"},{"name":"Śubha","start":"10:42","end":"12:27","startHours":10.703965518454265,"endHours":12.448453826361494,"quality":"auspicious"},{"name":"Roga","start":"12:27","end":"14:12","startHours":12.448453826361494,"endHours":14.192942134268723,"quality":"inauspicious"},{"name":"Udveg","start":"14:12","end":"15:56","startHours":14.192942134268723,"endHours":15.937430442175952,"quality":"inauspicious"},{"name":"Chala","start":"15:56","end":"17:41","startHours":15.937430442175952,"endHours":17.68191875008318,"quality":"neutral"},{"name":"Labha","start":"17:41","end":"19:26","startHours":17.68191875008318,"endHours":19.42640705799041,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:26","end":"20:41","startHours":19.42640705799041,"endHours":20.68191875008318,"quality":"inauspicious"},{"name":"Chala","start":"20:41","end":"21:56","startHours":20.68191875008318,"endHours":21.937430442175952,"quality":"neutral"},{"name":"Labha","start":"21:56","end":"23:12","startHours":21.937430442175952,"endHours":23.192942134268723,"quality":"auspicious"},{"name":"Amṛta","start":"23:12","end":"00:27","startHours":23.192942134268723,"endHours":24.448453826361494,"quality":"auspicious"},{"name":"Kāla","start":"00:27","end":"01:42","startHours":24.448453826361494,"endHours":25.703965518454265,"quality":"inauspicious"},{"name":"Śubha","start":"01:42","end":"02:58","startHours":25.703965518454265,"endHours":26.959477210547035,"quality":"auspicious"},{"name":"Roga","start":"02:58","end":"04:13","startHours":26.959477210547035,"endHours":28.214988902639803,"quality":"inauspicious"},{"name":"Udveg","start":"04:13","end":"05:28","startHours":28.214988902639803,"endHours":29.470500594732577,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:28","end":"06:28","startHours":5.4705005947325755,"endHours":6.4705005947325755,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:28","end":"07:28","startHours":6.4705005947325755,"endHours":7.4705005947325755,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:28","end":"08:28","startHours":7.4705005947325755,"endHours":8.470500594732576,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:28","end":"09:28","startHours":8.470500594732576,"endHours":9.470500594732576,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:28","end":"10:28","startHours":9.470500594732576,"endHours":10.470500594732576,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:28","end":"11:28","startHours":10.470500594732576,"endHours":11.470500594732576,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:28","end":"12:28","startHours":11.470500594732576,"endHours":12.470500594732576,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:28","end":"13:28","startHours":12.470500594732576,"endHours":13.470500594732576,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:28","end":"14:28","startHours":13.470500594732576,"endHours":14.470500594732576,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:28","end":"15:28","startHours":14.470500594732576,"endHours":15.470500594732576,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:28","end":"16:28","startHours":15.470500594732576,"endHours":16.470500594732577,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:28","end":"17:28","startHours":16.470500594732577,"endHours":17.470500594732577,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:28","end":"18:28","startHours":17.470500594732577,"endHours":18.470500594732577,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:28","end":"19:28","startHours":18.470500594732577,"endHours":19.470500594732577,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:28","end":"20:28","startHours":19.470500594732577,"endHours":20.470500594732577,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:28","end":"21:28","startHours":20.470500594732577,"endHours":21.470500594732577,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:28","end":"22:28","startHours":21.470500594732577,"endHours":22.470500594732577,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:28","end":"23:28","startHours":22.470500594732577,"endHours":23.470500594732577,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:28","end":"00:28","startHours":23.470500594732577,"endHours":24.470500594732577,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:28","end":"01:28","startHours":24.470500594732577,"endHours":25.470500594732577,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:28","end":"02:28","startHours":25.470500594732577,"endHours":26.470500594732577,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:28","end":"03:28","startHours":26.470500594732577,"endHours":27.470500594732577,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:28","end":"04:28","startHours":27.470500594732577,"endHours":28.470500594732577,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:28","end":"05:28","startHours":28.470500594732577,"endHours":29.470500594732577,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Padma","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":-20.640953271408268,"eotMinutes":-10.349229581689698,"ayanamsa":23.5463}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Daśamī · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"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":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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, 1978 CE · Perth, Australia · Vidhyamitra","description":"January 18, 1978 CE for Perth, Australia: Śukla Daśamī, sūryodaya 05:28, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1978-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1978-01-18","sa":"https://sa.vidhyamitra.com/city/perth/1978-01-18","hi":"https://hi.vidhyamitra.com/city/perth/1978-01-18","x-default":"https://vidhyamitra.com/city/perth/1978-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T06:57:37.883Z","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":"2026-05-19T06:57:37.883Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T06:57:37.883Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}