{"id":"vidhyamitra:city-day:perth:1931-01-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1931-01-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1931-01-19","date_display":"January 19, 1931 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":1931,"month":1,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426360.770833,"kali_year":5032,"ahargana":1837895.2708,"sun":{"sidereal_longitude":275.1979,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":279.7652,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":4.5673,"elapsed_within_tithi_degrees":4.5673},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.7652,"elapsed_within_degrees":13.0986},"yoga":{"number":15,"name":"Vajra","sum_longitude":194.9632},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":1931,"month":1,"day":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2426360.770833,"ahargana":1837895.2708,"kali_year":5032,"ayanamsa_lahiri":22.8898,"grahas":{"sun":{"sidereal_longitude":275.114233,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":277.997933,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false,"latitude":-4.4273},"mars":{"sidereal_longitude":108.42803300000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":254.24963300000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":81.61093299999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"venus":{"sidereal_longitude":229.96963300000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":263.308533,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":359.464,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":179.464,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":1931,"month":1,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426360.770833,"kali_year":5032,"ahargana":1837895.2708,"sun":{"sidereal_longitude":275.1979,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":279.7652,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":4.5673,"elapsed_within_tithi_degrees":4.5673},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":279.7652,"elapsed_within_degrees":13.0986},"yoga":{"number":15,"name":"Vajra","sum_longitude":194.9632},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.427,"elongation":4.567},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.427,"opposition_distance":175.433}},"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":"05:29","sunsetLocal":"19:26","solarNoonLocal":"12:27","dayLengthHours":13.947741929206028,"dayLengthDisplay":"13 Hours 56 Mins 52 Secs","nightLengthDisplay":"10 Hours 03 Mins 08 Secs","moonriseLocal":"05:43","moonsetLocal":"19:34","rahuKala":{"name":"Rāhu Kāla","start":"07:13","end":"08:58","startHours":7.22326434211141,"endHours":8.966732083262164,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:43","end":"12:27","startHours":10.710199824412918,"endHours":12.45366756556367,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:12","end":"15:56","startHours":14.197135306714426,"endHours":15.940603047865178,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:12","startHours":8.734269717775398,"endHours":9.19919444874893,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:04","end":"06:26","startHours":6.060952514677575,"endHours":6.432892299456402,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.988742834590138,"endHours":12.918592296537206,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:33","startHours":3.6200976770665196,"endHours":4.549947139013588,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:19","end":"05:29","startHours":4.317484773526822,"endHours":5.479796600960657,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.778291220431342,"endHours":15.70814068237841,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.227538530166687,"endHours":19.627538530166685,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:01","startHours":19.427538530166686,"endHours":20.008694443883602,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.177538530166686,"endHours":20.927538530166686,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.988742834590134,"endHours":24.918592296537206,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:29","end":"07:13","startHours":5.479796600960657,"endHours":7.22326434211141,"quality":"auspicious"},{"name":"Kāla","start":"07:13","end":"08:58","startHours":7.22326434211141,"endHours":8.966732083262164,"quality":"inauspicious"},{"name":"Śubha","start":"08:58","end":"10:43","startHours":8.966732083262164,"endHours":10.710199824412918,"quality":"auspicious"},{"name":"Roga","start":"10:43","end":"12:27","startHours":10.710199824412918,"endHours":12.45366756556367,"quality":"inauspicious"},{"name":"Udveg","start":"12:27","end":"14:12","startHours":12.45366756556367,"endHours":14.197135306714426,"quality":"inauspicious"},{"name":"Chala","start":"14:12","end":"15:56","startHours":14.197135306714426,"endHours":15.940603047865178,"quality":"neutral"},{"name":"Labha","start":"15:56","end":"17:41","startHours":15.940603047865178,"endHours":17.68407078901593,"quality":"auspicious"},{"name":"Amṛta","start":"17:41","end":"19:26","startHours":17.68407078901593,"endHours":19.427538530166686,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:26","end":"20:41","startHours":19.427538530166686,"endHours":20.684070789015934,"quality":"neutral"},{"name":"Labha","start":"20:41","end":"21:56","startHours":20.684070789015934,"endHours":21.940603047865178,"quality":"auspicious"},{"name":"Amṛta","start":"21:56","end":"23:12","startHours":21.940603047865178,"endHours":23.197135306714426,"quality":"auspicious"},{"name":"Kāla","start":"23:12","end":"00:27","startHours":23.197135306714426,"endHours":24.45366756556367,"quality":"inauspicious"},{"name":"Śubha","start":"00:27","end":"01:43","startHours":24.45366756556367,"endHours":25.710199824412918,"quality":"auspicious"},{"name":"Roga","start":"01:43","end":"02:58","startHours":25.710199824412918,"endHours":26.966732083262166,"quality":"inauspicious"},{"name":"Udveg","start":"02:58","end":"04:13","startHours":26.966732083262166,"endHours":28.223264342111413,"quality":"inauspicious"},{"name":"Chala","start":"04:13","end":"05:29","startHours":28.223264342111413,"endHours":29.479796600960658,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:29","end":"06:29","startHours":5.479796600960657,"endHours":6.479796600960657,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:29","end":"07:29","startHours":6.479796600960657,"endHours":7.479796600960657,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:29","end":"08:29","startHours":7.479796600960657,"endHours":8.479796600960658,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:29","end":"09:29","startHours":8.479796600960658,"endHours":9.479796600960658,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:29","end":"10:29","startHours":9.479796600960658,"endHours":10.479796600960658,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:29","end":"11:29","startHours":10.479796600960658,"endHours":11.479796600960658,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:29","end":"12:29","startHours":11.479796600960658,"endHours":12.479796600960658,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:29","end":"13:29","startHours":12.479796600960658,"endHours":13.479796600960658,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:29","end":"14:29","startHours":13.479796600960658,"endHours":14.479796600960658,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:29","end":"15:29","startHours":14.479796600960658,"endHours":15.479796600960658,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:29","end":"16:29","startHours":15.479796600960658,"endHours":16.479796600960658,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:29","end":"17:29","startHours":16.479796600960658,"endHours":17.479796600960658,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:29","end":"18:29","startHours":17.479796600960658,"endHours":18.479796600960658,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:29","end":"19:29","startHours":18.479796600960658,"endHours":19.479796600960658,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:29","end":"20:29","startHours":19.479796600960658,"endHours":20.479796600960658,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:29","end":"21:29","startHours":20.479796600960658,"endHours":21.479796600960658,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:29","end":"22:29","startHours":21.479796600960658,"endHours":22.479796600960658,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:29","end":"23:29","startHours":22.479796600960658,"endHours":23.479796600960658,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:29","end":"00:29","startHours":23.479796600960658,"endHours":24.479796600960658,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:29","end":"01:29","startHours":24.479796600960658,"endHours":25.479796600960658,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:29","end":"02:29","startHours":25.479796600960658,"endHours":26.479796600960658,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:29","end":"03:29","startHours":26.479796600960658,"endHours":27.479796600960658,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:29","end":"04:29","startHours":27.479796600960658,"endHours":28.479796600960658,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:29","end":"05:29","startHours":28.479796600960658,"endHours":29.479796600960658,"planetary_lord":"Venus"}],"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":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.558513316774874,"eotMinutes":-10.662053933820344,"ayanamsa":22.8898}},"calendars":{"vikram_samvat":1988,"vikram_samvatsara":"Tāraṇa","saka_samvat":1853,"saka_samvatsara":"Prajāpati","bengali_samvat":1338,"malayalam_era":1107,"nanakshahi_year":462,"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 Pratipada · Vikram 1988 Tāraṇa · Śaka 1853 Prajāpati"},"festivals":[{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"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":[]},"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 19, 1931 CE · Perth, Australia · Vidhyamitra","description":"January 19, 1931 CE for Perth, Australia: Śukla Pratipada, sūryodaya 05:29, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1931-01-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1931-01-19","sa":"https://sa.vidhyamitra.com/city/perth/1931-01-19","hi":"https://hi.vidhyamitra.com/city/perth/1931-01-19","x-default":"https://vidhyamitra.com/city/perth/1931-01-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T17:22:10.303Z","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":"2026-06-02T17:22:10.303Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T17:22:10.303Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}