{"id":"vidhyamitra:city-day:perth:1863-08-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1863-08-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1863-08-18","date_display":"August 18, 1863 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":1863,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2401735.770833,"kali_year":4965,"ahargana":1813270.2708,"sun":{"sidereal_longitude":122.3076,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":163.7399,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.4323,"elapsed_within_tithi_degrees":5.4323},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":163.7399,"elapsed_within_degrees":3.7399},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0475},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1863,"month":8,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2401735.770833,"ahargana":1813270.2708,"kali_year":4965,"ayanamsa_lahiri":21.948,"grahas":{"sun":{"sidereal_longitude":122.61338899999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":161.75798899999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false,"latitude":-3.9147},"mars":{"sidereal_longitude":139.54188899999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":138.55208900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":183.06018900000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":166.02738899999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":162.31388900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":224.215,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":44.215,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":1863,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2401735.770833,"kali_year":4965,"ahargana":1813270.2708,"sun":{"sidereal_longitude":122.3076,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":163.7399,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.4323,"elapsed_within_tithi_degrees":5.4323},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":163.7399,"elapsed_within_degrees":3.7399},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0475},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.915,"elongation":41.432},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.915,"opposition_distance":138.568}},"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":"06:50","sunsetLocal":"17:50","solarNoonLocal":"12:20","dayLengthHours":11.002476269007998,"dayLengthDisplay":"11 Hours 00 Mins 09 Secs","nightLengthDisplay":"12 Hours 59 Mins 51 Secs","moonriseLocal":"08:50","moonsetLocal":"21:03","rahuKala":{"name":"Rāhu Kāla","start":"15:05","end":"16:28","startHours":15.085386695933838,"endHours":16.460696229559836,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:35","end":"10:58","startHours":9.58414856142984,"endHours":10.95945809505584,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:20","end":"13:43","startHours":12.334767628681838,"endHours":13.71007716230784,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:46","startHours":9.400773956946374,"endHours":9.767523165913307,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:18","end":"07:35","startHours":7.291966005386507,"endHours":7.585365372560053,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.968018419714905,"endHours":12.701516837648771,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:22","end":"06:06","startHours":5.366532658310107,"endHours":6.100031076243974,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:55","end":"06:50","startHours":5.916656471760508,"endHours":6.83352949417784,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.168513673516506,"endHours":14.902012091450372,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:38","end":"18:02","startHours":17.63600576318584,"endHours":18.036005763185837,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:50","end":"18:18","startHours":17.836005763185838,"endHours":18.294442274394505,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:35","end":"19:20","startHours":17.586005763185838,"endHours":19.336005763185838,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.968018419714905,"endHours":24.70151683764877,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:50","end":"08:13","startHours":6.83352949417784,"endHours":8.20883902780384,"quality":"inauspicious"},{"name":"Udveg","start":"08:13","end":"09:35","startHours":8.20883902780384,"endHours":9.58414856142984,"quality":"inauspicious"},{"name":"Chala","start":"09:35","end":"10:58","startHours":9.58414856142984,"endHours":10.95945809505584,"quality":"neutral"},{"name":"Labha","start":"10:58","end":"12:20","startHours":10.95945809505584,"endHours":12.334767628681838,"quality":"auspicious"},{"name":"Amṛta","start":"12:20","end":"13:43","startHours":12.334767628681838,"endHours":13.71007716230784,"quality":"auspicious"},{"name":"Kāla","start":"13:43","end":"15:05","startHours":13.71007716230784,"endHours":15.085386695933838,"quality":"inauspicious"},{"name":"Śubha","start":"15:05","end":"16:28","startHours":15.085386695933838,"endHours":16.460696229559836,"quality":"auspicious"},{"name":"Roga","start":"16:28","end":"17:50","startHours":16.460696229559836,"endHours":17.836005763185838,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:50","end":"19:28","startHours":17.836005763185838,"endHours":19.46069622955984,"quality":"inauspicious"},{"name":"Śubha","start":"19:28","end":"21:05","startHours":19.46069622955984,"endHours":21.08538669593384,"quality":"auspicious"},{"name":"Roga","start":"21:05","end":"22:43","startHours":21.08538669593384,"endHours":22.71007716230784,"quality":"inauspicious"},{"name":"Udveg","start":"22:43","end":"00:20","startHours":22.71007716230784,"endHours":24.33476762868184,"quality":"inauspicious"},{"name":"Chala","start":"00:20","end":"01:58","startHours":24.33476762868184,"endHours":25.95945809505584,"quality":"neutral"},{"name":"Labha","start":"01:58","end":"03:35","startHours":25.95945809505584,"endHours":27.584148561429842,"quality":"auspicious"},{"name":"Amṛta","start":"03:35","end":"05:13","startHours":27.584148561429842,"endHours":29.20883902780384,"quality":"auspicious"},{"name":"Kāla","start":"05:13","end":"06:50","startHours":29.20883902780384,"endHours":30.83352949417784,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.83352949417784,"endHours":7.83352949417784,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.83352949417784,"endHours":8.83352949417784,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.83352949417784,"endHours":9.83352949417784,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.83352949417784,"endHours":10.83352949417784,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.83352949417784,"endHours":11.83352949417784,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.83352949417784,"endHours":12.83352949417784,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.83352949417784,"endHours":13.83352949417784,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.83352949417784,"endHours":14.83352949417784,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.83352949417784,"endHours":15.83352949417784,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.83352949417784,"endHours":16.83352949417784,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.83352949417784,"endHours":17.83352949417784,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.83352949417784,"endHours":18.83352949417784,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.83352949417784,"endHours":19.83352949417784,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.83352949417784,"endHours":20.83352949417784,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.83352949417784,"endHours":21.83352949417784,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.83352949417784,"endHours":22.83352949417784,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.83352949417784,"endHours":23.83352949417784,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.83352949417784,"endHours":24.83352949417784,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.83352949417784,"endHours":25.83352949417784,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.83352949417784,"endHours":26.83352949417784,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.83352949417784,"endHours":27.83352949417784,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.83352949417784,"endHours":28.83352949417784,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.83352949417784,"endHours":29.83352949417784,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.83352949417784,"endHours":30.83352949417784,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.333420481598603,"eotMinutes":-3.5280577209103767,"ayanamsa":21.948}},"calendars":{"vikram_samvat":1920,"vikram_samvatsara":"Dhātṛ","saka_samvat":1785,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1270,"malayalam_era":1039,"nanakshahi_year":394,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Caturthī · Vikram 1920 Dhātṛ · Śaka 1785 Rudhirodgāri"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"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":"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 August 18, 1863 CE · Perth, Australia · Vidhyamitra","description":"August 18, 1863 CE for Perth, Australia: Śukla Caturthī, sūryodaya 06:50, sūryāsta 17:50.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1863-08-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1863-08-18","sa":"https://sa.vidhyamitra.com/city/perth/1863-08-18","hi":"https://hi.vidhyamitra.com/city/perth/1863-08-18","x-default":"https://vidhyamitra.com/city/perth/1863-08-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T16:15:41.144Z","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":"2026-06-01T16:15:41.144Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T16:15:41.144Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}