{"id":"vidhyamitra:city-day:perth:2161-07-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2161-07-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2161-07-18","date_display":"July 18, 2161 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":2161,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2510547.770833,"kali_year":5263,"ahargana":1922082.2708,"sun":{"sidereal_longitude":88.8998,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":27.8468,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.947,"elapsed_within_tithi_degrees":10.947},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":27.8468,"elapsed_within_degrees":1.1801},"yoga":{"number":9,"name":"Śūla","sum_longitude":116.7466},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"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":2161,"month":7,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2510547.770833,"ahargana":1922082.2708,"kali_year":5263,"ayanamsa_lahiri":26.1096,"grahas":{"sun":{"sidereal_longitude":89.72347100000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":27.38987099999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false,"latitude":0.8566},"mars":{"sidereal_longitude":318.7772709999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":102.84547099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":218.24867100000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":54.59387099999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":197.99997099999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":218.8316,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":38.8316,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"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":2161,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2510547.770833,"kali_year":5263,"ahargana":1922082.2708,"sun":{"sidereal_longitude":88.8998,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":27.8468,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.947,"elapsed_within_tithi_degrees":10.947},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":27.8468,"elapsed_within_degrees":1.1801},"yoga":{"number":9,"name":"Śūla","sum_longitude":116.7466},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.857,"elongation":61.053},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.857,"opposition_distance":118.947}},"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":"07:13","sunsetLocal":"17:31","solarNoonLocal":"12:22","dayLengthHours":10.299498366743093,"dayLengthDisplay":"10 Hours 17 Mins 58 Secs","nightLengthDisplay":"13 Hours 42 Mins 02 Secs","moonriseLocal":"02:59","moonsetLocal":"13:27","rahuKala":{"name":"Rāhu Kāla","start":"09:48","end":"11:05","startHours":9.798690676989379,"endHours":11.086127972832266,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:40","end":"14:57","startHours":13.66100256451804,"endHours":14.948439860360924,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:13","end":"08:31","startHours":7.223816085303605,"endHours":8.511253381146492,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:58","startHours":9.627032370876993,"endHours":9.970348983101763,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:39","end":"07:56","startHours":7.652961850584568,"endHours":7.9276151403643835,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:43","startHours":12.03024865645038,"endHours":12.71688188089992,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:51","end":"06:32","startHours":5.850549636404526,"endHours":6.537182860854066,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:22","end":"07:13","startHours":6.365524554741681,"endHours":7.223816085303605,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:05","end":"14:47","startHours":14.090148329799,"endHours":14.77678155424854,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:19","end":"17:43","startHours":17.3233144520467,"endHours":17.723314452046697,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:31","end":"17:57","startHours":17.523314452046698,"endHours":17.95246021732766,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:16","end":"19:01","startHours":17.273314452046698,"endHours":19.023314452046698,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:43","startHours":24.030248656450382,"endHours":24.71688188089992,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:13","end":"08:31","startHours":7.223816085303605,"endHours":8.511253381146492,"quality":"inauspicious"},{"name":"Śubha","start":"08:31","end":"09:48","startHours":8.511253381146492,"endHours":9.798690676989379,"quality":"auspicious"},{"name":"Roga","start":"09:48","end":"11:05","startHours":9.798690676989379,"endHours":11.086127972832266,"quality":"inauspicious"},{"name":"Udveg","start":"11:05","end":"12:22","startHours":11.086127972832266,"endHours":12.37356526867515,"quality":"inauspicious"},{"name":"Chala","start":"12:22","end":"13:40","startHours":12.37356526867515,"endHours":13.66100256451804,"quality":"neutral"},{"name":"Labha","start":"13:40","end":"14:57","startHours":13.66100256451804,"endHours":14.948439860360924,"quality":"auspicious"},{"name":"Amṛta","start":"14:57","end":"16:14","startHours":14.948439860360924,"endHours":16.235877156203813,"quality":"auspicious"},{"name":"Kāla","start":"16:14","end":"17:31","startHours":16.235877156203813,"endHours":17.523314452046698,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:31","end":"19:14","startHours":17.523314452046698,"endHours":19.235877156203813,"quality":"auspicious"},{"name":"Amṛta","start":"19:14","end":"20:57","startHours":19.235877156203813,"endHours":20.948439860360924,"quality":"auspicious"},{"name":"Kāla","start":"20:57","end":"22:40","startHours":20.948439860360924,"endHours":22.66100256451804,"quality":"inauspicious"},{"name":"Śubha","start":"22:40","end":"00:22","startHours":22.66100256451804,"endHours":24.37356526867515,"quality":"auspicious"},{"name":"Roga","start":"00:22","end":"02:05","startHours":24.37356526867515,"endHours":26.086127972832266,"quality":"inauspicious"},{"name":"Udveg","start":"02:05","end":"03:48","startHours":26.086127972832266,"endHours":27.79869067698938,"quality":"inauspicious"},{"name":"Chala","start":"03:48","end":"05:31","startHours":27.79869067698938,"endHours":29.511253381146492,"quality":"neutral"},{"name":"Labha","start":"05:31","end":"07:13","startHours":29.511253381146492,"endHours":31.223816085303604,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.223816085303605,"endHours":8.223816085303605,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.223816085303605,"endHours":9.223816085303605,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.223816085303605,"endHours":10.223816085303605,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.223816085303605,"endHours":11.223816085303605,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.223816085303605,"endHours":12.223816085303605,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.223816085303605,"endHours":13.223816085303605,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.223816085303605,"endHours":14.223816085303605,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.223816085303605,"endHours":15.223816085303605,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.223816085303605,"endHours":16.223816085303604,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.223816085303604,"endHours":17.223816085303604,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.223816085303604,"endHours":18.223816085303604,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.223816085303604,"endHours":19.223816085303604,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.223816085303604,"endHours":20.223816085303604,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.223816085303604,"endHours":21.223816085303604,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.223816085303604,"endHours":22.223816085303604,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.223816085303604,"endHours":23.223816085303604,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.223816085303604,"endHours":24.223816085303604,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.223816085303604,"endHours":25.223816085303604,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.223816085303604,"endHours":26.223816085303604,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.223816085303604,"endHours":27.223816085303604,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.223816085303604,"endHours":28.223816085303604,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.223816085303604,"endHours":29.223816085303604,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.223816085303604,"endHours":30.223816085303604,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.223816085303604,"endHours":31.223816085303604,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","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":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":20.976562332881958,"eotMinutes":-5.85591612050904,"ayanamsa":26.1096}},"calendars":{"vikram_samvat":2218,"vikram_samvatsara":"Bhāva","saka_samvat":2083,"saka_samvatsara":"Durmati","bengali_samvat":1568,"malayalam_era":1337,"nanakshahi_year":692,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Daśamī · Vikram 2218 Bhāva · Śaka 2083 Durmati"},"festivals":[],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","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 July 18, 2161 CE · Perth, Australia · Vidhyamitra","description":"July 18, 2161 CE for Perth, Australia: Kṛṣṇa Daśamī, sūryodaya 07:13, sūryāsta 17:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2161-07-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2161-07-18","sa":"https://sa.vidhyamitra.com/city/perth/2161-07-18","hi":"https://hi.vidhyamitra.com/city/perth/2161-07-18","x-default":"https://vidhyamitra.com/city/perth/2161-07-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:43:38.675Z","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":"2026-05-31T19:43:38.675Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:43:38.675Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}