{"id":"vidhyamitra:city-day:perth:1920-01-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1920-01-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-01-09","date_display":"January 9, 1920 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":1920,"month":1,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422332.770833,"kali_year":5021,"ahargana":1833867.2708,"sun":{"sidereal_longitude":264.7707,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":126.5855,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":221.8148,"elapsed_within_tithi_degrees":5.8148},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":126.5855,"elapsed_within_degrees":6.5855},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":31.3562},"karana":{"half_tithi_index":36,"name":"Bava"},"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":1920,"month":1,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422332.770833,"ahargana":1833867.2708,"kali_year":5021,"ayanamsa_lahiri":22.7357,"grahas":{"sun":{"sidereal_longitude":264.745632,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":127.43093199999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false,"latitude":-4.4906},"mars":{"sidereal_longitude":178.698532,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":249.51573199999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":113.87193200000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":223.83683199999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":139.126932,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":212.8868,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":32.8868,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":1920,"month":1,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422332.770833,"kali_year":5021,"ahargana":1833867.2708,"sun":{"sidereal_longitude":264.7707,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":126.5855,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":221.8148,"elapsed_within_tithi_degrees":5.8148},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":126.5855,"elapsed_within_degrees":6.5855},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":31.3562},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.491,"elongation":138.185},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.491,"opposition_distance":41.815}},"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":"05:20","sunsetLocal":"19:27","solarNoonLocal":"12:24","dayLengthHours":14.122150572939905,"dayLengthDisplay":"14 Hours 07 Mins 20 Secs","nightLengthDisplay":"9 Hours 52 Mins 40 Secs","moonriseLocal":"21:41","moonsetLocal":"08:48","rahuKala":{"name":"Rāhu Kāla","start":"10:38","end":"12:24","startHours":10.62910268368882,"endHours":12.394371505306307,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:55","end":"17:41","startHours":15.924909148541285,"endHours":17.69017797015877,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:06","end":"08:52","startHours":7.098565040453844,"endHours":8.863833862071331,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:06","startHours":8.628464685855667,"endHours":9.099203038286996,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:55","end":"06:18","startHours":5.921719159375518,"endHours":6.298309841320582,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:52","startHours":11.923633152874979,"endHours":12.865109857737638,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:27","end":"04:24","startHours":3.450342809111034,"endHours":4.391819513973695,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:09","end":"05:20","startHours":4.15645033775803,"endHours":5.333296218836355,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:45","end":"15:41","startHours":14.748063267462957,"endHours":15.689539972325617,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.25544679177626,"endHours":19.65544679177626,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:03","startHours":19.45544679177626,"endHours":20.043869732315425,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.20544679177626,"endHours":20.95544679177626,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:52","startHours":23.92363315287498,"endHours":24.86510985773764,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:20","end":"07:06","startHours":5.333296218836355,"endHours":7.098565040453844,"quality":"neutral"},{"name":"Labha","start":"07:06","end":"08:52","startHours":7.098565040453844,"endHours":8.863833862071331,"quality":"auspicious"},{"name":"Amṛta","start":"08:52","end":"10:38","startHours":8.863833862071331,"endHours":10.62910268368882,"quality":"auspicious"},{"name":"Kāla","start":"10:38","end":"12:24","startHours":10.62910268368882,"endHours":12.394371505306307,"quality":"inauspicious"},{"name":"Śubha","start":"12:24","end":"14:10","startHours":12.394371505306307,"endHours":14.159640326923796,"quality":"auspicious"},{"name":"Roga","start":"14:10","end":"15:55","startHours":14.159640326923796,"endHours":15.924909148541285,"quality":"inauspicious"},{"name":"Udveg","start":"15:55","end":"17:41","startHours":15.924909148541285,"endHours":17.69017797015877,"quality":"inauspicious"},{"name":"Chala","start":"17:41","end":"19:27","startHours":17.69017797015877,"endHours":19.45544679177626,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:27","end":"20:41","startHours":19.45544679177626,"endHours":20.69017797015877,"quality":"inauspicious"},{"name":"Udveg","start":"20:41","end":"21:55","startHours":20.69017797015877,"endHours":21.924909148541285,"quality":"inauspicious"},{"name":"Chala","start":"21:55","end":"23:10","startHours":21.924909148541285,"endHours":23.159640326923796,"quality":"neutral"},{"name":"Labha","start":"23:10","end":"00:24","startHours":23.159640326923796,"endHours":24.39437150530631,"quality":"auspicious"},{"name":"Amṛta","start":"00:24","end":"01:38","startHours":24.39437150530631,"endHours":25.62910268368882,"quality":"auspicious"},{"name":"Kāla","start":"01:38","end":"02:52","startHours":25.62910268368882,"endHours":26.86383386207133,"quality":"inauspicious"},{"name":"Śubha","start":"02:52","end":"04:06","startHours":26.86383386207133,"endHours":28.098565040453842,"quality":"auspicious"},{"name":"Roga","start":"04:06","end":"05:20","startHours":28.098565040453842,"endHours":29.333296218836356,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:20","end":"06:20","startHours":5.333296218836355,"endHours":6.333296218836355,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:20","end":"07:20","startHours":6.333296218836355,"endHours":7.333296218836355,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:20","end":"08:20","startHours":7.333296218836355,"endHours":8.333296218836356,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:20","end":"09:20","startHours":8.333296218836356,"endHours":9.333296218836356,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:20","end":"10:20","startHours":9.333296218836356,"endHours":10.333296218836356,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:20","end":"11:20","startHours":10.333296218836356,"endHours":11.333296218836356,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:20","end":"12:20","startHours":11.333296218836356,"endHours":12.333296218836356,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:20","end":"13:20","startHours":12.333296218836356,"endHours":13.333296218836356,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:20","end":"14:20","startHours":13.333296218836356,"endHours":14.333296218836356,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:20","end":"15:20","startHours":14.333296218836356,"endHours":15.333296218836356,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:20","end":"16:20","startHours":15.333296218836356,"endHours":16.333296218836356,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:20","end":"17:20","startHours":16.333296218836356,"endHours":17.333296218836356,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:20","end":"18:20","startHours":17.333296218836356,"endHours":18.333296218836356,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:20","end":"19:20","startHours":18.333296218836356,"endHours":19.333296218836356,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:20","end":"20:20","startHours":19.333296218836356,"endHours":20.333296218836356,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:20","end":"21:20","startHours":20.333296218836356,"endHours":21.333296218836356,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:20","end":"22:20","startHours":21.333296218836356,"endHours":22.333296218836356,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:20","end":"23:20","startHours":22.333296218836356,"endHours":23.333296218836356,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:20","end":"00:20","startHours":23.333296218836356,"endHours":24.333296218836356,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:20","end":"01:20","startHours":24.333296218836356,"endHours":25.333296218836356,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:20","end":"02:20","startHours":25.333296218836356,"endHours":26.333296218836356,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:20","end":"03:20","startHours":26.333296218836356,"endHours":27.333296218836356,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:20","end":"04:20","startHours":27.333296218836356,"endHours":28.333296218836356,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:20","end":"05:20","startHours":28.333296218836356,"endHours":29.333296218836356,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"South-East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"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":-22.294239538437935,"eotMinutes":-7.10429031837854,"ayanamsa":22.7357}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","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":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Caturthī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"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 January 9, 1920 CE · Perth, Australia · Vidhyamitra","description":"January 9, 1920 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 05:20, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1920-01-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1920-01-09","sa":"https://sa.vidhyamitra.com/city/perth/1920-01-09","hi":"https://hi.vidhyamitra.com/city/perth/1920-01-09","x-default":"https://vidhyamitra.com/city/perth/1920-01-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T04:53:45.476Z","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":"2026-06-01T04:53:45.476Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T04:53:45.476Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}