{"id":"vidhyamitra:city-day:perth:1923-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1923-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1923-07-13","date_display":"July 13, 1923 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":1923,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423613.770833,"kali_year":5025,"ahargana":1835148.2708,"sun":{"sidereal_longitude":86.6116,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":73.8116,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.2001,"elapsed_within_tithi_degrees":11.2001},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.8116,"elapsed_within_degrees":7.145},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":160.4232},"karana":{"half_tithi_index":57,"name":"Śakuni"},"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":1923,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2423613.770833,"ahargana":1835148.2708,"kali_year":5025,"ayanamsa_lahiri":22.7847,"grahas":{"sun":{"sidereal_longitude":86.84538900000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":74.90448900000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":-4.2595},"mars":{"sidereal_longitude":96.370789,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":77.02368899999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":197.72358899999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":71.78118899999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":171.41168900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":145.0133,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":325.0133,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"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":1923,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423613.770833,"kali_year":5025,"ahargana":1835148.2708,"sun":{"sidereal_longitude":86.6116,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":73.8116,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.2001,"elapsed_within_tithi_degrees":11.2001},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.8116,"elapsed_within_degrees":7.145},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":160.4232},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.26,"elongation":12.8},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.26,"opposition_distance":167.2}},"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":"07:16","sunsetLocal":"17:28","solarNoonLocal":"12:22","dayLengthHours":10.199515626042235,"dayLengthDisplay":"10 Hours 11 Mins 58 Secs","nightLengthDisplay":"13 Hours 48 Mins 02 Secs","moonriseLocal":"06:33","moonsetLocal":"16:35","rahuKala":{"name":"Rāhu Kāla","start":"11:05","end":"12:22","startHours":11.090384360847398,"endHours":12.365323814102677,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:55","end":"16:11","startHours":14.915202720613236,"endHours":16.190142173868516,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:32","end":"09:49","startHours":8.540505454336838,"endHours":9.815444907592118,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"09:59","startHours":9.645452980491413,"endHours":9.985436834692822,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:41","end":"07:58","startHours":7.69054581883332,"endHours":7.962532902194446,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:42","startHours":12.025339959901268,"endHours":12.705307668304085,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:54","end":"06:35","startHours":5.9056305842759285,"endHours":6.5855982926787435,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:25","end":"07:16","startHours":6.41560636557804,"endHours":7.2655660010815595,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:45","startHours":14.065243085109715,"endHours":14.74521079351253,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.265081627123795,"endHours":17.665081627123794,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:53","startHours":17.465081627123794,"endHours":17.890061444875553,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.215081627123794,"endHours":18.965081627123794,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:42","startHours":24.02533995990127,"endHours":24.705307668304084,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:16","end":"08:32","startHours":7.2655660010815595,"endHours":8.540505454336838,"quality":"neutral"},{"name":"Labha","start":"08:32","end":"09:49","startHours":8.540505454336838,"endHours":9.815444907592118,"quality":"auspicious"},{"name":"Amṛta","start":"09:49","end":"11:05","startHours":9.815444907592118,"endHours":11.090384360847398,"quality":"auspicious"},{"name":"Kāla","start":"11:05","end":"12:22","startHours":11.090384360847398,"endHours":12.365323814102677,"quality":"inauspicious"},{"name":"Śubha","start":"12:22","end":"13:38","startHours":12.365323814102677,"endHours":13.640263267357955,"quality":"auspicious"},{"name":"Roga","start":"13:38","end":"14:55","startHours":13.640263267357955,"endHours":14.915202720613236,"quality":"inauspicious"},{"name":"Udveg","start":"14:55","end":"16:11","startHours":14.915202720613236,"endHours":16.190142173868516,"quality":"inauspicious"},{"name":"Chala","start":"16:11","end":"17:28","startHours":16.190142173868516,"endHours":17.465081627123794,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:28","end":"19:11","startHours":17.465081627123794,"endHours":19.190142173868516,"quality":"inauspicious"},{"name":"Udveg","start":"19:11","end":"20:55","startHours":19.190142173868516,"endHours":20.915202720613237,"quality":"inauspicious"},{"name":"Chala","start":"20:55","end":"22:38","startHours":20.915202720613237,"endHours":22.640263267357955,"quality":"neutral"},{"name":"Labha","start":"22:38","end":"00:22","startHours":22.640263267357955,"endHours":24.365323814102677,"quality":"auspicious"},{"name":"Amṛta","start":"00:22","end":"02:05","startHours":24.365323814102677,"endHours":26.0903843608474,"quality":"auspicious"},{"name":"Kāla","start":"02:05","end":"03:49","startHours":26.0903843608474,"endHours":27.815444907592116,"quality":"inauspicious"},{"name":"Śubha","start":"03:49","end":"05:32","startHours":27.815444907592116,"endHours":29.540505454336838,"quality":"auspicious"},{"name":"Roga","start":"05:32","end":"07:16","startHours":29.540505454336838,"endHours":31.26556600108156,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:16","end":"08:16","startHours":7.2655660010815595,"endHours":8.26556600108156,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:16","end":"09:16","startHours":8.26556600108156,"endHours":9.26556600108156,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:16","end":"10:16","startHours":9.26556600108156,"endHours":10.26556600108156,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:16","end":"11:16","startHours":10.26556600108156,"endHours":11.26556600108156,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:16","end":"12:16","startHours":11.26556600108156,"endHours":12.26556600108156,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:16","end":"13:16","startHours":12.26556600108156,"endHours":13.26556600108156,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:16","end":"14:16","startHours":13.26556600108156,"endHours":14.26556600108156,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:16","end":"15:16","startHours":14.26556600108156,"endHours":15.26556600108156,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:16","end":"16:16","startHours":15.26556600108156,"endHours":16.26556600108156,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:16","end":"17:16","startHours":16.26556600108156,"endHours":17.26556600108156,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:16","end":"18:16","startHours":17.26556600108156,"endHours":18.26556600108156,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:16","end":"19:16","startHours":18.26556600108156,"endHours":19.26556600108156,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:16","end":"20:16","startHours":19.26556600108156,"endHours":20.26556600108156,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:16","end":"21:16","startHours":20.26556600108156,"endHours":21.26556600108156,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:16","end":"22:16","startHours":21.26556600108156,"endHours":22.26556600108156,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:16","end":"23:16","startHours":22.26556600108156,"endHours":23.26556600108156,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:16","end":"00:16","startHours":23.26556600108156,"endHours":24.26556600108156,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:16","end":"01:16","startHours":24.26556600108156,"endHours":25.26556600108156,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:16","end":"02:16","startHours":25.26556600108156,"endHours":26.26556600108156,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:16","end":"03:16","startHours":26.26556600108156,"endHours":27.26556600108156,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:16","end":"04:16","startHours":27.26556600108156,"endHours":28.26556600108156,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:16","end":"05:16","startHours":28.26556600108156,"endHours":29.26556600108156,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:16","end":"06:16","startHours":29.26556600108156,"endHours":30.26556600108156,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:16","end":"07:16","startHours":30.26556600108156,"endHours":31.26556600108156,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Cara","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":22.000625272477834,"eotMinutes":-5.361428846160681,"ayanamsa":22.7847}},"calendars":{"vikram_samvat":1980,"vikram_samvatsara":"Dhātṛ","saka_samvat":1845,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1330,"malayalam_era":1099,"nanakshahi_year":454,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Jyeṣṭha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Kṛṣṇa Caturdaśī · Vikram 1980 Dhātṛ · Śaka 1845 Rudhirodgāri"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"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 July 13, 1923 CE · Perth, Australia · Vidhyamitra","description":"July 13, 1923 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 07:16, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1923-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1923-07-13","sa":"https://sa.vidhyamitra.com/city/perth/1923-07-13","hi":"https://hi.vidhyamitra.com/city/perth/1923-07-13","x-default":"https://vidhyamitra.com/city/perth/1923-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T10:06:24.738Z","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":"2026-06-01T10:06:24.738Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T10:06:24.738Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}