{"id":"vidhyamitra:city-day:perth:2101-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2101-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2101-08-17","date_display":"August 17, 2101 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":2101,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488662.770833,"kali_year":5203,"ahargana":1900197.2708,"sun":{"sidereal_longitude":117.922,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":30.1844,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":272.2624,"elapsed_within_tithi_degrees":8.2624},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.1844,"elapsed_within_degrees":3.5177},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.1063},"karana":{"half_tithi_index":45,"name":"Kaulava"},"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":2101,"month":8,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488662.770833,"ahargana":1900197.2708,"kali_year":5203,"ayanamsa_lahiri":25.2726,"grahas":{"sun":{"sidereal_longitude":118.78243900000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":31.525639000000012,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":4.4978},"mars":{"sidereal_longitude":32.79683899999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":142.72803899999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":199.361939,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":158.32463900000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":186.888639,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":298.4042,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":118.4042,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":2101,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488662.770833,"kali_year":5203,"ahargana":1900197.2708,"sun":{"sidereal_longitude":117.922,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":30.1844,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":272.2624,"elapsed_within_tithi_degrees":8.2624},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.1844,"elapsed_within_degrees":3.5177},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.1063},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.498,"elongation":87.738},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.498,"opposition_distance":92.262}},"eclipse_window_40days":[{"offset_days":-8,"type":"lunar","occurs":true,"moon_latitude":-0.866,"opposition_distance":2.572},{"offset_days":8,"type":"solar","occurs":true,"moon_latitude":-0.767,"elongation":2.226}]},"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":"06:51","sunsetLocal":"17:50","solarNoonLocal":"12:20","dayLengthHours":10.987663828135503,"dayLengthDisplay":"10 Hours 59 Mins 16 Secs","nightLengthDisplay":"13 Hours 00 Mins 44 Secs","moonriseLocal":"01:19","moonsetLocal":"11:43","rahuKala":{"name":"Rāhu Kāla","start":"12:20","end":"13:43","startHours":12.3385263592353,"endHours":13.711984337752236,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:13","end":"09:35","startHours":8.218152423684485,"endHours":9.591610402201422,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:58","end":"12:20","startHours":10.96506838071836,"endHours":12.3385263592353,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:46","startHours":9.408482671732497,"endHours":9.774738132670347,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:18","end":"07:36","startHours":7.30251377133986,"endHours":7.59551814009014,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:42","startHours":11.972270898297449,"endHours":12.70478182017315,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:07","startHours":5.3796726014161464,"endHours":6.112183523291847,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:56","end":"06:51","startHours":5.929055792822922,"endHours":6.844694445167547,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.169803663924549,"endHours":14.90231458580025,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:38","end":"18:02","startHours":17.63235827330305,"endHours":18.03235827330305,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:50","end":"18:17","startHours":17.83235827330305,"endHours":18.290177599475363,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:35","end":"19:20","startHours":17.58235827330305,"endHours":19.33235827330305,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:42","startHours":23.97227089829745,"endHours":24.70478182017315,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:51","end":"08:13","startHours":6.844694445167547,"endHours":8.218152423684485,"quality":"auspicious"},{"name":"Amṛta","start":"08:13","end":"09:35","startHours":8.218152423684485,"endHours":9.591610402201422,"quality":"auspicious"},{"name":"Kāla","start":"09:35","end":"10:58","startHours":9.591610402201422,"endHours":10.96506838071836,"quality":"inauspicious"},{"name":"Śubha","start":"10:58","end":"12:20","startHours":10.96506838071836,"endHours":12.3385263592353,"quality":"auspicious"},{"name":"Roga","start":"12:20","end":"13:43","startHours":12.3385263592353,"endHours":13.711984337752236,"quality":"inauspicious"},{"name":"Udveg","start":"13:43","end":"15:05","startHours":13.711984337752236,"endHours":15.085442316269173,"quality":"inauspicious"},{"name":"Chala","start":"15:05","end":"16:28","startHours":15.085442316269173,"endHours":16.458900294786112,"quality":"neutral"},{"name":"Labha","start":"16:28","end":"17:50","startHours":16.458900294786112,"endHours":17.83235827330305,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:50","end":"19:28","startHours":17.83235827330305,"endHours":19.458900294786112,"quality":"inauspicious"},{"name":"Chala","start":"19:28","end":"21:05","startHours":19.458900294786112,"endHours":21.085442316269173,"quality":"neutral"},{"name":"Labha","start":"21:05","end":"22:43","startHours":21.085442316269173,"endHours":22.711984337752238,"quality":"auspicious"},{"name":"Amṛta","start":"22:43","end":"00:20","startHours":22.711984337752238,"endHours":24.3385263592353,"quality":"auspicious"},{"name":"Kāla","start":"00:20","end":"01:58","startHours":24.3385263592353,"endHours":25.96506838071836,"quality":"inauspicious"},{"name":"Śubha","start":"01:58","end":"03:35","startHours":25.96506838071836,"endHours":27.591610402201425,"quality":"auspicious"},{"name":"Roga","start":"03:35","end":"05:13","startHours":27.591610402201425,"endHours":29.218152423684487,"quality":"inauspicious"},{"name":"Udveg","start":"05:13","end":"06:51","startHours":29.218152423684487,"endHours":30.844694445167548,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:51","end":"07:51","startHours":6.844694445167547,"endHours":7.844694445167547,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:51","end":"08:51","startHours":7.844694445167547,"endHours":8.844694445167548,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:51","end":"09:51","startHours":8.844694445167548,"endHours":9.844694445167548,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:51","end":"10:51","startHours":9.844694445167548,"endHours":10.844694445167548,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:51","end":"11:51","startHours":10.844694445167548,"endHours":11.844694445167548,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:51","end":"12:51","startHours":11.844694445167548,"endHours":12.844694445167548,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:51","end":"13:51","startHours":12.844694445167548,"endHours":13.844694445167548,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:51","end":"14:51","startHours":13.844694445167548,"endHours":14.844694445167548,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:51","end":"15:51","startHours":14.844694445167548,"endHours":15.844694445167548,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:51","end":"16:51","startHours":15.844694445167548,"endHours":16.844694445167548,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:51","end":"17:51","startHours":16.844694445167548,"endHours":17.844694445167548,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:51","end":"18:51","startHours":17.844694445167548,"endHours":18.844694445167548,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:51","end":"19:51","startHours":18.844694445167548,"endHours":19.844694445167548,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:51","end":"20:51","startHours":19.844694445167548,"endHours":20.844694445167548,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:51","end":"21:51","startHours":20.844694445167548,"endHours":21.844694445167548,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:51","end":"22:51","startHours":21.844694445167548,"endHours":22.844694445167548,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:51","end":"23:51","startHours":22.844694445167548,"endHours":23.844694445167548,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:51","end":"00:51","startHours":23.844694445167548,"endHours":24.844694445167548,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:51","end":"01:51","startHours":24.844694445167548,"endHours":25.844694445167548,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:51","end":"02:51","startHours":25.844694445167548,"endHours":26.844694445167548,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:51","end":"03:51","startHours":26.844694445167548,"endHours":27.844694445167548,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:51","end":"04:51","startHours":27.844694445167548,"endHours":28.844694445167548,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:51","end":"05:51","startHours":28.844694445167548,"endHours":29.844694445167548,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:51","end":"06:51","startHours":29.844694445167548,"endHours":30.844694445167548,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.501573571463995,"eotMinutes":-3.7535815541179196,"ayanamsa":25.2726}},"calendars":{"vikram_samvat":2158,"vikram_samvatsara":"Bhāva","saka_samvat":2023,"saka_samvatsara":"Durmati","bengali_samvat":1508,"malayalam_era":1277,"nanakshahi_year":632,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Aṣṭamī · Vikram 2158 Bhāva · Śaka 2023 Durmati"},"festivals":[],"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":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5},{"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 August 17, 2101 CE · Perth, Australia · Vidhyamitra","description":"August 17, 2101 CE for Perth, Australia: Kṛṣṇa Aṣṭamī, sūryodaya 06:51, sūryāsta 17:50.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2101-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2101-08-17","sa":"https://sa.vidhyamitra.com/city/perth/2101-08-17","hi":"https://hi.vidhyamitra.com/city/perth/2101-08-17","x-default":"https://vidhyamitra.com/city/perth/2101-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T00:51:16.531Z","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":"2026-06-01T00:51:16.531Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T00:51:16.531Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}