{"id":"vidhyamitra:city-day:perth:1817-08-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1817-08-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1817-08-01","date_display":"August 1, 1817 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":1817,"month":8,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384917.770833,"kali_year":4919,"ahargana":1796452.2708,"sun":{"sidereal_longitude":106.944,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":333.3254,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":226.3814,"elapsed_within_tithi_degrees":10.3814},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":333.3254,"elapsed_within_degrees":13.3254},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.2693},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1817,"month":8,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2384917.770833,"ahargana":1796452.2708,"kali_year":4919,"ayanamsa_lahiri":21.3048,"grahas":{"sun":{"sidereal_longitude":107.05475999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":331.80916,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false,"latitude":-3.9719},"mars":{"sidereal_longitude":29.838360000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":108.44916,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":221.91406000000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":63.85286000000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":314.98506,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":35.3136,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":215.3136,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1817,"month":8,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384917.770833,"kali_year":4919,"ahargana":1796452.2708,"sun":{"sidereal_longitude":106.944,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":333.3254,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":226.3814,"elapsed_within_tithi_degrees":10.3814},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":333.3254,"elapsed_within_degrees":13.3254},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.2693},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.972,"elongation":133.619},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.972,"opposition_distance":46.381}},"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":"07:06","sunsetLocal":"17:40","solarNoonLocal":"12:23","dayLengthHours":10.565423693565577,"dayLengthDisplay":"10 Hours 33 Mins 56 Secs","nightLengthDisplay":"13 Hours 26 Mins 04 Secs","moonriseLocal":"21:12","moonsetLocal":"09:31","rahuKala":{"name":"Rāhu Kāla","start":"11:03","end":"12:23","startHours":11.055583202749474,"endHours":12.376261164445172,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:01","end":"16:20","startHours":15.017617087836566,"endHours":16.338295049532263,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:25","end":"09:44","startHours":8.41422727935808,"endHours":9.734905241053777,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:55","startHours":9.558814846161019,"endHours":9.910995635946538,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:32","end":"07:49","startHours":7.533775304894283,"endHours":7.815519936722698,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:44","startHours":12.024080374659652,"endHours":12.728441954230691,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:23","startHours":5.684826158520307,"endHours":6.389187738091345,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:13","end":"07:06","startHours":6.213097343198585,"endHours":7.093549317662384,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:08","end":"14:50","startHours":14.13716511337277,"endHours":14.841526692943809,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:28","end":"17:52","startHours":17.45897301122796,"endHours":17.85897301122796,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:40","end":"18:06","startHours":17.65897301122796,"endHours":18.09919899845986,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:25","end":"19:10","startHours":17.40897301122796,"endHours":19.15897301122796,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:44","startHours":24.024080374659654,"endHours":24.72844195423069,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:06","end":"08:25","startHours":7.093549317662384,"endHours":8.41422727935808,"quality":"neutral"},{"name":"Labha","start":"08:25","end":"09:44","startHours":8.41422727935808,"endHours":9.734905241053777,"quality":"auspicious"},{"name":"Amṛta","start":"09:44","end":"11:03","startHours":9.734905241053777,"endHours":11.055583202749474,"quality":"auspicious"},{"name":"Kāla","start":"11:03","end":"12:23","startHours":11.055583202749474,"endHours":12.376261164445172,"quality":"inauspicious"},{"name":"Śubha","start":"12:23","end":"13:42","startHours":12.376261164445172,"endHours":13.696939126140869,"quality":"auspicious"},{"name":"Roga","start":"13:42","end":"15:01","startHours":13.696939126140869,"endHours":15.017617087836566,"quality":"inauspicious"},{"name":"Udveg","start":"15:01","end":"16:20","startHours":15.017617087836566,"endHours":16.338295049532263,"quality":"inauspicious"},{"name":"Chala","start":"16:20","end":"17:40","startHours":16.338295049532263,"endHours":17.65897301122796,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:40","end":"19:20","startHours":17.65897301122796,"endHours":19.338295049532263,"quality":"inauspicious"},{"name":"Udveg","start":"19:20","end":"21:01","startHours":19.338295049532263,"endHours":21.017617087836566,"quality":"inauspicious"},{"name":"Chala","start":"21:01","end":"22:42","startHours":21.017617087836566,"endHours":22.69693912614087,"quality":"neutral"},{"name":"Labha","start":"22:42","end":"00:23","startHours":22.69693912614087,"endHours":24.37626116444517,"quality":"auspicious"},{"name":"Amṛta","start":"00:23","end":"02:03","startHours":24.37626116444517,"endHours":26.055583202749474,"quality":"auspicious"},{"name":"Kāla","start":"02:03","end":"03:44","startHours":26.055583202749474,"endHours":27.734905241053777,"quality":"inauspicious"},{"name":"Śubha","start":"03:44","end":"05:25","startHours":27.734905241053777,"endHours":29.41422727935808,"quality":"auspicious"},{"name":"Roga","start":"05:25","end":"07:06","startHours":29.41422727935808,"endHours":31.093549317662383,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.093549317662384,"endHours":8.093549317662383,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.093549317662383,"endHours":9.093549317662383,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.093549317662383,"endHours":10.093549317662383,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.093549317662383,"endHours":11.093549317662383,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.093549317662383,"endHours":12.093549317662383,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.093549317662383,"endHours":13.093549317662383,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.093549317662383,"endHours":14.093549317662383,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.093549317662383,"endHours":15.093549317662383,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.093549317662383,"endHours":16.093549317662383,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.093549317662383,"endHours":17.093549317662383,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.093549317662383,"endHours":18.093549317662383,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.093549317662383,"endHours":19.093549317662383,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.093549317662383,"endHours":20.093549317662383,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.093549317662383,"endHours":21.093549317662383,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.093549317662383,"endHours":22.093549317662383,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.093549317662383,"endHours":23.093549317662383,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.093549317662383,"endHours":24.093549317662383,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.093549317662383,"endHours":25.093549317662383,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.093549317662383,"endHours":26.093549317662383,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.093549317662383,"endHours":27.093549317662383,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.093549317662383,"endHours":28.093549317662383,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.093549317662383,"endHours":29.093549317662383,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.093549317662383,"endHours":30.093549317662383,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.093549317662383,"endHours":31.093549317662383,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.172240231525578,"eotMinutes":-6.017669866710306,"ayanamsa":21.3048}},"calendars":{"vikram_samvat":1874,"vikram_samvatsara":"Vikṛti","saka_samvat":1739,"saka_samvatsara":"Īśvara","bengali_samvat":1224,"malayalam_era":993,"nanakshahi_year":348,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa (Adhika) Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa (Adhika) Kṛṣṇa Caturthī · Vikram 1874 Vikṛti · Śaka 1739 Īśvara"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 1, 1817 CE · Perth, Australia · Vidhyamitra","description":"August 1, 1817 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 07:06, sūryāsta 17:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1817-08-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1817-08-01","sa":"https://sa.vidhyamitra.com/city/perth/1817-08-01","hi":"https://hi.vidhyamitra.com/city/perth/1817-08-01","x-default":"https://vidhyamitra.com/city/perth/1817-08-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-05T05:42:37.938Z","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":"2026-06-05T05:42:37.938Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-05T05:42:37.938Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}