{"id":"vidhyamitra:city-day:perth:1923-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1923-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1923-01-30","date_display":"January 30, 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":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423449.770833,"kali_year":5024,"ahargana":1834984.2708,"sun":{"sidereal_longitude":286.5368,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":72.4796,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.9428,"elapsed_within_tithi_degrees":1.9428},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.4796,"elapsed_within_degrees":5.8129},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.0164},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2423449.770833,"ahargana":1834984.2708,"kali_year":5024,"ayanamsa_lahiri":22.7785,"grahas":{"sun":{"sidereal_longitude":286.35215500000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":72.57865500000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-4.4472},"mars":{"sidereal_longitude":344.601155,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":285.39295500000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":205.62705500000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":240.646255,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":177.63685499999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":153.7028,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":333.7028,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1923,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2423449.770833,"kali_year":5024,"ahargana":1834984.2708,"sun":{"sidereal_longitude":286.5368,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":72.4796,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":145.9428,"elapsed_within_tithi_degrees":1.9428},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.4796,"elapsed_within_degrees":5.8129},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.0164},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.447,"elongation":145.943},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.447,"opposition_distance":34.057}},"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":"05:39","sunsetLocal":"19:21","solarNoonLocal":"12:30","dayLengthHours":13.696870114163424,"dayLengthDisplay":"13 Hours 41 Mins 49 Secs","nightLengthDisplay":"10 Hours 18 Mins 11 Secs","moonriseLocal":"17:14","moonsetLocal":"03:16","rahuKala":{"name":"Rāhu Kāla","start":"15:55","end":"17:38","startHours":15.922803294803597,"endHours":17.634912059074026,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:04","end":"10:47","startHours":9.074368237721885,"endHours":10.786477001992314,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:30","end":"14:13","startHours":12.498585766262742,"endHours":14.210694530533171,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:18","startHours":8.846087069152496,"endHours":9.302649406291277,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:13","end":"06:35","startHours":6.2208536306045055,"endHours":6.58610350031553,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:57","startHours":12.042023429123962,"endHours":12.955148103401523,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:49","end":"04:44","startHours":3.8239013606259062,"endHours":4.737026034903468,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:31","end":"05:39","startHours":4.5087448663340775,"endHours":5.6501507091810295,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.781397451956646,"endHours":15.694522126234208,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:09","end":"19:33","startHours":19.147020823344455,"endHours":19.547020823344454,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:21","end":"19:55","startHours":19.347020823344454,"endHours":19.91772374476793,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:06","end":"20:51","startHours":19.097020823344454,"endHours":20.847020823344454,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:57","startHours":24.04202342912396,"endHours":24.955148103401523,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:39","end":"07:22","startHours":5.6501507091810295,"endHours":7.3622594734514575,"quality":"inauspicious"},{"name":"Udveg","start":"07:22","end":"09:04","startHours":7.3622594734514575,"endHours":9.074368237721885,"quality":"inauspicious"},{"name":"Chala","start":"09:04","end":"10:47","startHours":9.074368237721885,"endHours":10.786477001992314,"quality":"neutral"},{"name":"Labha","start":"10:47","end":"12:30","startHours":10.786477001992314,"endHours":12.498585766262742,"quality":"auspicious"},{"name":"Amṛta","start":"12:30","end":"14:13","startHours":12.498585766262742,"endHours":14.210694530533171,"quality":"auspicious"},{"name":"Kāla","start":"14:13","end":"15:55","startHours":14.210694530533171,"endHours":15.922803294803597,"quality":"inauspicious"},{"name":"Śubha","start":"15:55","end":"17:38","startHours":15.922803294803597,"endHours":17.634912059074026,"quality":"auspicious"},{"name":"Roga","start":"17:38","end":"19:21","startHours":17.634912059074026,"endHours":19.347020823344454,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:21","end":"20:38","startHours":19.347020823344454,"endHours":20.634912059074026,"quality":"inauspicious"},{"name":"Śubha","start":"20:38","end":"21:55","startHours":20.634912059074026,"endHours":21.9228032948036,"quality":"auspicious"},{"name":"Roga","start":"21:55","end":"23:13","startHours":21.9228032948036,"endHours":23.21069453053317,"quality":"inauspicious"},{"name":"Udveg","start":"23:13","end":"00:30","startHours":23.21069453053317,"endHours":24.498585766262742,"quality":"inauspicious"},{"name":"Chala","start":"00:30","end":"01:47","startHours":24.498585766262742,"endHours":25.786477001992314,"quality":"neutral"},{"name":"Labha","start":"01:47","end":"03:04","startHours":25.786477001992314,"endHours":27.074368237721885,"quality":"auspicious"},{"name":"Amṛta","start":"03:04","end":"04:22","startHours":27.074368237721885,"endHours":28.36225947345146,"quality":"auspicious"},{"name":"Kāla","start":"04:22","end":"05:39","startHours":28.36225947345146,"endHours":29.65015070918103,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:39","end":"06:39","startHours":5.6501507091810295,"endHours":6.6501507091810295,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:39","end":"07:39","startHours":6.6501507091810295,"endHours":7.6501507091810295,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:39","end":"08:39","startHours":7.6501507091810295,"endHours":8.65015070918103,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:39","end":"09:39","startHours":8.65015070918103,"endHours":9.65015070918103,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:39","end":"10:39","startHours":9.65015070918103,"endHours":10.65015070918103,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:39","end":"11:39","startHours":10.65015070918103,"endHours":11.65015070918103,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:39","end":"12:39","startHours":11.65015070918103,"endHours":12.65015070918103,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:39","end":"13:39","startHours":12.65015070918103,"endHours":13.65015070918103,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:39","end":"14:39","startHours":13.65015070918103,"endHours":14.65015070918103,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:39","end":"15:39","startHours":14.65015070918103,"endHours":15.65015070918103,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:39","end":"16:39","startHours":15.65015070918103,"endHours":16.65015070918103,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:39","end":"17:39","startHours":16.65015070918103,"endHours":17.65015070918103,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:39","end":"18:39","startHours":17.65015070918103,"endHours":18.65015070918103,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:39","end":"19:39","startHours":18.65015070918103,"endHours":19.65015070918103,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:39","end":"20:39","startHours":19.65015070918103,"endHours":20.65015070918103,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:39","end":"21:39","startHours":20.65015070918103,"endHours":21.65015070918103,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:39","end":"22:39","startHours":21.65015070918103,"endHours":22.65015070918103,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:39","end":"23:39","startHours":22.65015070918103,"endHours":23.65015070918103,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:39","end":"00:39","startHours":23.65015070918103,"endHours":24.65015070918103,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:39","end":"01:39","startHours":24.65015070918103,"endHours":25.65015070918103,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:39","end":"02:39","startHours":25.65015070918103,"endHours":26.65015070918103,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:39","end":"03:39","startHours":26.65015070918103,"endHours":27.65015070918103,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:39","end":"04:39","startHours":27.65015070918103,"endHours":28.65015070918103,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:39","end":"05:39","startHours":28.65015070918103,"endHours":29.65015070918103,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.97033827834795,"eotMinutes":-13.357145975764517,"ayanamsa":22.7785}},"calendars":{"vikram_samvat":1980,"vikram_samvatsara":"Dhātṛ","saka_samvat":1845,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1330,"malayalam_era":1099,"nanakshahi_year":454,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Trayodaśī · Vikram 1980 Dhātṛ · Śaka 1845 Rudhirodgāri"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 30, 1923 CE · Perth, Australia · Vidhyamitra","description":"January 30, 1923 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:39, sūryāsta 19:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1923-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1923-01-30","sa":"https://sa.vidhyamitra.com/city/perth/1923-01-30","hi":"https://hi.vidhyamitra.com/city/perth/1923-01-30","x-default":"https://vidhyamitra.com/city/perth/1923-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T01:04:14.560Z","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":"2026-06-02T01:04:14.560Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T01:04:14.560Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}