{"id":"vidhyamitra:city-day:perth:1850-08-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1850-08-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1850-08-18","date_display":"August 18, 1850 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":1850,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2396987.770833,"kali_year":4952,"ahargana":1808522.2708,"sun":{"sidereal_longitude":122.6561,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":247.6483,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":124.9922,"elapsed_within_tithi_degrees":4.9922},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":247.6483,"elapsed_within_degrees":7.6483},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.3044},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1850,"month":8,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2396987.770833,"ahargana":1808522.2708,"kali_year":4952,"ayanamsa_lahiri":21.7664,"grahas":{"sun":{"sidereal_longitude":122.93219799999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":250.289398,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":3.3499},"mars":{"sidereal_longitude":156.89119800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":141.273998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":155.266298,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":166.15919800000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":0.8191980000000285,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":115.7869,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":295.7869,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1850,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2396987.770833,"kali_year":4952,"ahargana":1808522.2708,"sun":{"sidereal_longitude":122.6561,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":247.6483,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":124.9922,"elapsed_within_tithi_degrees":4.9922},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":247.6483,"elapsed_within_degrees":7.6483},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.3044},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.35,"elongation":124.992},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.35,"opposition_distance":55.008}},"eclipse_window_40days":[{"offset_days":-10,"type":"solar","occurs":true,"moon_latitude":-0.079,"elongation":2.21},{"offset_days":5,"type":"lunar","occurs":true,"moon_latitude":-1.111,"opposition_distance":2.372}]},"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":11.006500422211182,"dayLengthDisplay":"11 Hours 00 Mins 23 Secs","nightLengthDisplay":"12 Hours 59 Mins 37 Secs","moonriseLocal":"13:44","moonsetLocal":"03:55","rahuKala":{"name":"Rāhu Kāla","start":"16:28","end":"17:50","startHours":16.46220528701103,"endHours":17.83801783978743,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:20","end":"13:43","startHours":12.334767628681838,"endHours":13.710580181458235,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:05","end":"16:28","startHours":15.086392734234632,"endHours":16.46220528701103,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:46","startHours":9.399700849425521,"endHours":9.76658419683256,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:17","end":"07:35","startHours":7.290121601835046,"endHours":7.583628279760678,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.967884281274799,"endHours":12.701650976088878,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:22","end":"06:06","startHours":5.363984027948089,"endHours":6.097750722762168,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:55","end":"06:50","startHours":5.914309049058648,"endHours":6.831517417576246,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.169184365717035,"endHours":14.902951060531114,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:38","end":"18:02","startHours":17.63801783978743,"endHours":18.03801783978743,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:50","end":"18:18","startHours":17.83801783978743,"endHours":18.29662202404623,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:35","end":"19:20","startHours":17.58801783978743,"endHours":19.33801783978743,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.9678842812748,"endHours":24.701650976088878,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:50","end":"08:12","startHours":6.831517417576246,"endHours":8.207329970352644,"quality":"inauspicious"},{"name":"Chala","start":"08:12","end":"09:35","startHours":8.207329970352644,"endHours":9.583142523129041,"quality":"neutral"},{"name":"Labha","start":"09:35","end":"10:58","startHours":9.583142523129041,"endHours":10.95895507590544,"quality":"auspicious"},{"name":"Amṛta","start":"10:58","end":"12:20","startHours":10.95895507590544,"endHours":12.334767628681838,"quality":"auspicious"},{"name":"Kāla","start":"12:20","end":"13:43","startHours":12.334767628681838,"endHours":13.710580181458235,"quality":"inauspicious"},{"name":"Śubha","start":"13:43","end":"15:05","startHours":13.710580181458235,"endHours":15.086392734234632,"quality":"auspicious"},{"name":"Roga","start":"15:05","end":"16:28","startHours":15.086392734234632,"endHours":16.46220528701103,"quality":"inauspicious"},{"name":"Udveg","start":"16:28","end":"17:50","startHours":16.46220528701103,"endHours":17.83801783978743,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:50","end":"19:28","startHours":17.83801783978743,"endHours":19.46220528701103,"quality":"auspicious"},{"name":"Roga","start":"19:28","end":"21:05","startHours":19.46220528701103,"endHours":21.086392734234636,"quality":"inauspicious"},{"name":"Udveg","start":"21:05","end":"22:43","startHours":21.086392734234636,"endHours":22.710580181458237,"quality":"inauspicious"},{"name":"Chala","start":"22:43","end":"00:20","startHours":22.710580181458237,"endHours":24.33476762868184,"quality":"neutral"},{"name":"Labha","start":"00:20","end":"01:58","startHours":24.33476762868184,"endHours":25.95895507590544,"quality":"auspicious"},{"name":"Amṛta","start":"01:58","end":"03:35","startHours":25.95895507590544,"endHours":27.58314252312904,"quality":"auspicious"},{"name":"Kāla","start":"03:35","end":"05:12","startHours":27.58314252312904,"endHours":29.207329970352646,"quality":"inauspicious"},{"name":"Śubha","start":"05:12","end":"06:50","startHours":29.207329970352646,"endHours":30.831517417576247,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.831517417576246,"endHours":7.831517417576246,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.831517417576246,"endHours":8.831517417576247,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.831517417576247,"endHours":9.831517417576247,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.831517417576247,"endHours":10.831517417576247,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.831517417576247,"endHours":11.831517417576247,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.831517417576247,"endHours":12.831517417576247,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.831517417576247,"endHours":13.831517417576247,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.831517417576247,"endHours":14.831517417576247,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.831517417576247,"endHours":15.831517417576247,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.831517417576247,"endHours":16.831517417576247,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.831517417576247,"endHours":17.831517417576247,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.831517417576247,"endHours":18.831517417576247,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.831517417576247,"endHours":19.831517417576247,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.831517417576247,"endHours":20.831517417576247,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.831517417576247,"endHours":21.831517417576247,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.831517417576247,"endHours":22.831517417576247,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.831517417576247,"endHours":23.831517417576247,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.831517417576247,"endHours":24.831517417576247,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.831517417576247,"endHours":25.831517417576247,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.831517417576247,"endHours":26.831517417576247,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.831517417576247,"endHours":27.831517417576247,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.831517417576247,"endHours":28.831517417576247,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.831517417576247,"endHours":29.831517417576247,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.831517417576247,"endHours":30.831517417576247,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.287691979557035,"eotMinutes":-3.5280577209103767,"ayanamsa":21.7664}},"calendars":{"vikram_samvat":1907,"vikram_samvatsara":"Rudhirodgāri","saka_samvat":1772,"saka_samvatsara":"Sādhāraṇa","bengali_samvat":1257,"malayalam_era":1026,"nanakshahi_year":381,"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 Ekādaśī · Vikram 1907 Rudhirodgāri · Śaka 1772 Sādhāraṇa"},"festivals":[{"id":"pavitropana-ekadashi","name":"Pavitropanā Ekādaśī (Putradā)","name_sanskrit":"पवित्रोपना एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Confers son; pavitra (sacred thread) ceremony for Viṣṇu.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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, 1850 CE · Perth, Australia · Vidhyamitra","description":"August 18, 1850 CE for Perth, Australia: Śukla Ekādaśī, sūryodaya 06:50, sūryāsta 17:50.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1850-08-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1850-08-18","sa":"https://sa.vidhyamitra.com/city/perth/1850-08-18","hi":"https://hi.vidhyamitra.com/city/perth/1850-08-18","x-default":"https://vidhyamitra.com/city/perth/1850-08-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T22:38:55.031Z","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":"2026-06-02T22:38:55.031Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T22:38:55.031Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}