{"id":"vidhyamitra:city-day:perth:1941-10-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1941-10-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1941-10-13","date_display":"October 13, 1941 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":1941,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2430280.770833,"kali_year":5043,"ahargana":1841815.2708,"sun":{"sidereal_longitude":175.6773,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":83.6798,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":268.0025,"elapsed_within_tithi_degrees":4.0025},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":83.6798,"elapsed_within_degrees":3.6798},"yoga":{"number":20,"name":"Śiva","sum_longitude":259.3571},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1941,"month":10,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2430280.770833,"ahargana":1841815.2708,"kali_year":5043,"ayanamsa_lahiri":23.0397,"grahas":{"sun":{"sidereal_longitude":176.27336000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":80.62786,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":-4.1742},"mars":{"sidereal_longitude":353.81896,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":199.85186,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":59.00116000000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":220.37576,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":34.99616000000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":151.7635,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":331.7635,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1941,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2430280.770833,"kali_year":5043,"ahargana":1841815.2708,"sun":{"sidereal_longitude":175.6773,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":83.6798,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":268.0025,"elapsed_within_tithi_degrees":4.0025},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":83.6798,"elapsed_within_degrees":3.6798},"yoga":{"number":20,"name":"Śiva","sum_longitude":259.3571},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.174,"elongation":91.998},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.174,"opposition_distance":88.002}},"eclipse_window_40days":[{"offset_days":-8,"type":"lunar","occurs":true,"moon_latitude":-1.044,"opposition_distance":2.147}]},"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":"05:39","sunsetLocal":"18:25","solarNoonLocal":"12:02","dayLengthHours":12.765542084681833,"dayLengthDisplay":"12 Hours 45 Mins 56 Secs","nightLengthDisplay":"11 Hours 14 Mins 04 Secs","moonriseLocal":"00:37","moonsetLocal":"10:42","rahuKala":{"name":"Rāhu Kāla","start":"07:15","end":"08:51","startHours":7.248181231443056,"endHours":8.843873992028286,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:26","end":"12:02","startHours":10.439566752613514,"endHours":12.035259513198742,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:14","startHours":13.630952273783972,"endHours":15.226645034369202,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:03","startHours":8.631114957283588,"endHours":9.056633026772982,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:11","end":"06:31","startHours":6.1843860577195695,"endHours":6.524800513311085,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:28","startHours":11.609741443709348,"endHours":12.460777582688136,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:57","end":"04:48","startHours":3.950416192900249,"endHours":4.801452331879037,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:35","end":"05:39","startHours":4.58869329713434,"endHours":5.6524884708578265,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:01","startHours":14.162849860645714,"endHours":15.013885999624502,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.21803055553966,"endHours":18.618030555539658,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:57","startHours":18.41803055553966,"endHours":18.9499281424014,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.16803055553966,"endHours":19.91803055553966,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:28","startHours":23.609741443709346,"endHours":24.460777582688138,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:39","end":"07:15","startHours":5.6524884708578265,"endHours":7.248181231443056,"quality":"auspicious"},{"name":"Kāla","start":"07:15","end":"08:51","startHours":7.248181231443056,"endHours":8.843873992028286,"quality":"inauspicious"},{"name":"Śubha","start":"08:51","end":"10:26","startHours":8.843873992028286,"endHours":10.439566752613514,"quality":"auspicious"},{"name":"Roga","start":"10:26","end":"12:02","startHours":10.439566752613514,"endHours":12.035259513198742,"quality":"inauspicious"},{"name":"Udveg","start":"12:02","end":"13:38","startHours":12.035259513198742,"endHours":13.630952273783972,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:14","startHours":13.630952273783972,"endHours":15.226645034369202,"quality":"neutral"},{"name":"Labha","start":"15:14","end":"16:49","startHours":15.226645034369202,"endHours":16.82233779495443,"quality":"auspicious"},{"name":"Amṛta","start":"16:49","end":"18:25","startHours":16.82233779495443,"endHours":18.41803055553966,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:25","end":"19:49","startHours":18.41803055553966,"endHours":19.82233779495443,"quality":"neutral"},{"name":"Labha","start":"19:49","end":"21:14","startHours":19.82233779495443,"endHours":21.2266450343692,"quality":"auspicious"},{"name":"Amṛta","start":"21:14","end":"22:38","startHours":21.2266450343692,"endHours":22.630952273783972,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:02","startHours":22.630952273783972,"endHours":24.035259513198742,"quality":"inauspicious"},{"name":"Śubha","start":"00:02","end":"01:26","startHours":24.035259513198742,"endHours":25.439566752613512,"quality":"auspicious"},{"name":"Roga","start":"01:26","end":"02:51","startHours":25.439566752613512,"endHours":26.843873992028286,"quality":"inauspicious"},{"name":"Udveg","start":"02:51","end":"04:15","startHours":26.843873992028286,"endHours":28.248181231443056,"quality":"inauspicious"},{"name":"Chala","start":"04:15","end":"05:39","startHours":28.248181231443056,"endHours":29.652488470857826,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:39","end":"06:39","startHours":5.6524884708578265,"endHours":6.6524884708578265,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:39","end":"07:39","startHours":6.6524884708578265,"endHours":7.6524884708578265,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:39","end":"08:39","startHours":7.6524884708578265,"endHours":8.652488470857826,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:39","end":"09:39","startHours":8.652488470857826,"endHours":9.652488470857826,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:39","end":"10:39","startHours":9.652488470857826,"endHours":10.652488470857826,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:39","end":"11:39","startHours":10.652488470857826,"endHours":11.652488470857826,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:39","end":"12:39","startHours":11.652488470857826,"endHours":12.652488470857826,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:39","end":"13:39","startHours":12.652488470857826,"endHours":13.652488470857826,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:39","end":"14:39","startHours":13.652488470857826,"endHours":14.652488470857826,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:39","end":"15:39","startHours":14.652488470857826,"endHours":15.652488470857826,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:39","end":"16:39","startHours":15.652488470857826,"endHours":16.652488470857826,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:39","end":"17:39","startHours":16.652488470857826,"endHours":17.652488470857826,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:39","end":"18:39","startHours":17.652488470857826,"endHours":18.652488470857826,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:39","end":"19:39","startHours":18.652488470857826,"endHours":19.652488470857826,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:39","end":"20:39","startHours":19.652488470857826,"endHours":20.652488470857826,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:39","end":"21:39","startHours":20.652488470857826,"endHours":21.652488470857826,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:39","end":"22:39","startHours":21.652488470857826,"endHours":22.652488470857826,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:39","end":"23:39","startHours":22.652488470857826,"endHours":23.652488470857826,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:39","end":"00:39","startHours":23.652488470857826,"endHours":24.652488470857826,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:39","end":"01:39","startHours":24.652488470857826,"endHours":25.652488470857826,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:39","end":"02:39","startHours":25.652488470857826,"endHours":26.652488470857826,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:39","end":"03:39","startHours":26.652488470857826,"endHours":27.652488470857826,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:39","end":"04:39","startHours":27.652488470857826,"endHours":28.652488470857826,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:39","end":"05:39","startHours":28.652488470857826,"endHours":29.652488470857826,"planetary_lord":"Venus"}],"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":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-7.558699805070131,"eotMinutes":14.442429208075392,"ayanamsa":23.0397}},"calendars":{"vikram_samvat":1998,"vikram_samvatsara":"Jaya","saka_samvat":1863,"saka_samvatsara":"Vṛṣa","bengali_samvat":1348,"malayalam_era":1117,"nanakshahi_year":472,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Aṣṭamī · Vikram 1998 Jaya · Śaka 1863 Vṛṣa"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 October 13, 1941 CE · Perth, Australia · Vidhyamitra","description":"October 13, 1941 CE for Perth, Australia: Kṛṣṇa Aṣṭamī, sūryodaya 05:39, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1941-10-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1941-10-13","sa":"https://sa.vidhyamitra.com/city/perth/1941-10-13","hi":"https://hi.vidhyamitra.com/city/perth/1941-10-13","x-default":"https://vidhyamitra.com/city/perth/1941-10-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:54:40.447Z","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":"2026-06-01T22:54:40.447Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:54:40.447Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}