{"id":"vidhyamitra:city-day:perth:1924-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1924-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1924-01-13","date_display":"January 13, 1924 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":1924,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423797.770833,"kali_year":5025,"ahargana":1835332.2708,"sun":{"sidereal_longitude":268.8446,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":347.9811,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":79.1364,"elapsed_within_tithi_degrees":7.1364},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":347.9811,"elapsed_within_degrees":1.3144},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.8257},"karana":{"half_tithi_index":13,"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":1924,"month":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2423797.770833,"ahargana":1835332.2708,"kali_year":5025,"ayanamsa_lahiri":22.7918,"grahas":{"sun":{"sidereal_longitude":268.79545899999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":348.792759,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":-2.4304},"mars":{"sidereal_longitude":213.90835900000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":270.148359,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":229.295259,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":300.21885899999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":189.06165899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":135.2641,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":315.2641,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"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":1924,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423797.770833,"kali_year":5025,"ahargana":1835332.2708,"sun":{"sidereal_longitude":268.8446,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":347.9811,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":79.1364,"elapsed_within_tithi_degrees":7.1364},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":347.9811,"elapsed_within_degrees":1.3144},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.8257},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.43,"elongation":79.136},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.43,"opposition_distance":100.864}},"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":"05:23","sunsetLocal":"19:27","solarNoonLocal":"12:25","dayLengthHours":14.062380652807828,"dayLengthDisplay":"14 Hours 03 Mins 45 Secs","nightLengthDisplay":"9 Hours 56 Mins 15 Secs","moonriseLocal":"11:54","moonsetLocal":"23:36","rahuKala":{"name":"Rāhu Kāla","start":"17:42","end":"19:27","startHours":17.693291602992495,"endHours":19.451089184593474,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:25","end":"14:11","startHours":12.419898858189558,"endHours":14.177696439790537,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:56","end":"17:42","startHours":15.935494021391516,"endHours":17.693291602992495,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:08","startHours":8.669930684107472,"endHours":9.138676705867733,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:58","end":"06:21","startHours":5.974641058985972,"endHours":6.349637876394181,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:53","startHours":11.9511528364293,"endHours":12.88864487994982,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:31","end":"04:27","startHours":3.5137244447446014,"endHours":4.451216488265123,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:13","end":"05:23","startHours":4.216843477384993,"endHours":5.388708531785645,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.763628966990865,"endHours":15.701121010511386,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.251089184593475,"endHours":19.651089184593474,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.451089184593474,"endHours":20.037021711793802,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.201089184593474,"endHours":20.951089184593474,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:53","startHours":23.9511528364293,"endHours":24.888644879949823,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:23","end":"07:09","startHours":5.388708531785645,"endHours":7.146506113386623,"quality":"inauspicious"},{"name":"Chala","start":"07:09","end":"08:54","startHours":7.146506113386623,"endHours":8.904303694987602,"quality":"neutral"},{"name":"Labha","start":"08:54","end":"10:40","startHours":8.904303694987602,"endHours":10.66210127658858,"quality":"auspicious"},{"name":"Amṛta","start":"10:40","end":"12:25","startHours":10.66210127658858,"endHours":12.419898858189558,"quality":"auspicious"},{"name":"Kāla","start":"12:25","end":"14:11","startHours":12.419898858189558,"endHours":14.177696439790537,"quality":"inauspicious"},{"name":"Śubha","start":"14:11","end":"15:56","startHours":14.177696439790537,"endHours":15.935494021391516,"quality":"auspicious"},{"name":"Roga","start":"15:56","end":"17:42","startHours":15.935494021391516,"endHours":17.693291602992495,"quality":"inauspicious"},{"name":"Udveg","start":"17:42","end":"19:27","startHours":17.693291602992495,"endHours":19.451089184593474,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:27","end":"20:42","startHours":19.451089184593474,"endHours":20.693291602992495,"quality":"auspicious"},{"name":"Roga","start":"20:42","end":"21:56","startHours":20.693291602992495,"endHours":21.935494021391516,"quality":"inauspicious"},{"name":"Udveg","start":"21:56","end":"23:11","startHours":21.935494021391516,"endHours":23.177696439790537,"quality":"inauspicious"},{"name":"Chala","start":"23:11","end":"00:25","startHours":23.177696439790537,"endHours":24.419898858189562,"quality":"neutral"},{"name":"Labha","start":"00:25","end":"01:40","startHours":24.419898858189562,"endHours":25.66210127658858,"quality":"auspicious"},{"name":"Amṛta","start":"01:40","end":"02:54","startHours":25.66210127658858,"endHours":26.904303694987604,"quality":"auspicious"},{"name":"Kāla","start":"02:54","end":"04:09","startHours":26.904303694987604,"endHours":28.146506113386625,"quality":"inauspicious"},{"name":"Śubha","start":"04:09","end":"05:23","startHours":28.146506113386625,"endHours":29.388708531785646,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:23","end":"06:23","startHours":5.388708531785645,"endHours":6.388708531785645,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:23","end":"07:23","startHours":6.388708531785645,"endHours":7.388708531785645,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:23","end":"08:23","startHours":7.388708531785645,"endHours":8.388708531785646,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:23","end":"09:23","startHours":8.388708531785646,"endHours":9.388708531785646,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:23","end":"10:23","startHours":9.388708531785646,"endHours":10.388708531785646,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:23","end":"11:23","startHours":10.388708531785646,"endHours":11.388708531785646,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:23","end":"12:23","startHours":11.388708531785646,"endHours":12.388708531785646,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:23","end":"13:23","startHours":12.388708531785646,"endHours":13.388708531785646,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:23","end":"14:23","startHours":13.388708531785646,"endHours":14.388708531785646,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:23","end":"15:23","startHours":14.388708531785646,"endHours":15.388708531785646,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:23","end":"16:23","startHours":15.388708531785646,"endHours":16.388708531785646,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:23","end":"17:23","startHours":16.388708531785646,"endHours":17.388708531785646,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:23","end":"18:23","startHours":17.388708531785646,"endHours":18.388708531785646,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:23","end":"19:23","startHours":18.388708531785646,"endHours":19.388708531785646,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:23","end":"20:23","startHours":19.388708531785646,"endHours":20.388708531785646,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:23","end":"21:23","startHours":20.388708531785646,"endHours":21.388708531785646,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:23","end":"22:23","startHours":21.388708531785646,"endHours":22.388708531785646,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:23","end":"23:23","startHours":22.388708531785646,"endHours":23.388708531785646,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:23","end":"00:23","startHours":23.388708531785646,"endHours":24.388708531785646,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:23","end":"01:23","startHours":24.388708531785646,"endHours":25.388708531785646,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:23","end":"02:23","startHours":25.388708531785646,"endHours":26.388708531785646,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:23","end":"03:23","startHours":26.388708531785646,"endHours":27.388708531785646,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:23","end":"04:23","startHours":27.388708531785646,"endHours":28.388708531785646,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:23","end":"05:23","startHours":28.388708531785646,"endHours":29.388708531785646,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"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":"North-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.70543177663606,"eotMinutes":-8.635931491373626,"ayanamsa":22.7918}},"calendars":{"vikram_samvat":1981,"vikram_samvatsara":"Īśvara","saka_samvat":1846,"saka_samvatsara":"Raktākṣī","bengali_samvat":1331,"malayalam_era":1100,"nanakshahi_year":455,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Saptamī · Vikram 1981 Īśvara · Śaka 1846 Raktākṣī"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi_eve_of_ingress":"Makara"},"precedence":4}],"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 January 13, 1924 CE · Perth, Australia · Vidhyamitra","description":"January 13, 1924 CE for Perth, Australia: Śukla Saptamī, sūryodaya 05:23, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1924-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1924-01-13","sa":"https://sa.vidhyamitra.com/city/perth/1924-01-13","hi":"https://hi.vidhyamitra.com/city/perth/1924-01-13","x-default":"https://vidhyamitra.com/city/perth/1924-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:25:05.980Z","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":"2026-06-01T19:25:05.980Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:25:05.980Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}