{"id":"vidhyamitra:city-day:perth:1920-01-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1920-01-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-01-15","date_display":"January 15, 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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422338.770833,"kali_year":5021,"ahargana":1833873.2708,"sun":{"sidereal_longitude":270.9346,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":201.0161,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":290.0815,"elapsed_within_tithi_degrees":2.0815},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":201.0161,"elapsed_within_degrees":1.0161},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.9507},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422338.770833,"ahargana":1833873.2708,"kali_year":5021,"ayanamsa_lahiri":22.736,"grahas":{"sun":{"sidereal_longitude":270.85890300000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":203.16180299999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false,"latitude":-0.9003},"mars":{"sidereal_longitude":181.42130299999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":258.5570029999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":113.21210300000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":230.97070299999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":138.920703,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":212.5689,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":32.5689,"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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422338.770833,"kali_year":5021,"ahargana":1833873.2708,"sun":{"sidereal_longitude":270.9346,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":201.0161,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":290.0815,"elapsed_within_tithi_degrees":2.0815},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":201.0161,"elapsed_within_degrees":1.0161},"yoga":{"number":9,"name":"Śūla","sum_longitude":111.9507},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.9,"elongation":69.919},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.9,"opposition_distance":110.081}},"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":"05:25","sunsetLocal":"19:27","solarNoonLocal":"12:26","dayLengthHours":14.029183246140436,"dayLengthDisplay":"14 Hours 01 Mins 45 Secs","nightLengthDisplay":"9 Hours 58 Mins 15 Secs","moonriseLocal":"01:09","moonsetLocal":"14:41","rahuKala":{"name":"Rāhu Kāla","start":"14:11","end":"15:56","startHours":14.18544706320311,"endHours":15.939094968970664,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:25","end":"07:10","startHours":5.417207534365337,"endHours":7.1708554401328914,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:55","end":"10:41","startHours":8.924503345900446,"endHours":10.678151251668002,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:41","end":"09:09","startHours":8.690683625131438,"endHours":9.158323066669453,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:00","end":"06:23","startHours":6.001756836287855,"endHours":6.375868389518267,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:54","startHours":11.964159715897539,"endHours":12.89943859897357,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:29","startHours":3.546649768213279,"endHours":4.481928651289309,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:15","end":"05:25","startHours":4.248108930520301,"endHours":5.417207534365337,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.769996365125627,"endHours":15.705275248201655,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.246390780505774,"endHours":19.646390780505772,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.446390780505773,"endHours":20.03094008242829,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.196390780505773,"endHours":20.946390780505773,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:54","startHours":23.96415971589754,"endHours":24.89943859897357,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:25","end":"07:10","startHours":5.417207534365337,"endHours":7.1708554401328914,"quality":"auspicious"},{"name":"Roga","start":"07:10","end":"08:55","startHours":7.1708554401328914,"endHours":8.924503345900446,"quality":"inauspicious"},{"name":"Udveg","start":"08:55","end":"10:41","startHours":8.924503345900446,"endHours":10.678151251668002,"quality":"inauspicious"},{"name":"Chala","start":"10:41","end":"12:26","startHours":10.678151251668002,"endHours":12.431799157435556,"quality":"neutral"},{"name":"Labha","start":"12:26","end":"14:11","startHours":12.431799157435556,"endHours":14.18544706320311,"quality":"auspicious"},{"name":"Amṛta","start":"14:11","end":"15:56","startHours":14.18544706320311,"endHours":15.939094968970664,"quality":"auspicious"},{"name":"Kāla","start":"15:56","end":"17:42","startHours":15.939094968970664,"endHours":17.69274287473822,"quality":"inauspicious"},{"name":"Śubha","start":"17:42","end":"19:27","startHours":17.69274287473822,"endHours":19.446390780505773,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:27","end":"20:42","startHours":19.446390780505773,"endHours":20.69274287473822,"quality":"auspicious"},{"name":"Kāla","start":"20:42","end":"21:56","startHours":20.69274287473822,"endHours":21.939094968970664,"quality":"inauspicious"},{"name":"Śubha","start":"21:56","end":"23:11","startHours":21.939094968970664,"endHours":23.18544706320311,"quality":"auspicious"},{"name":"Roga","start":"23:11","end":"00:26","startHours":23.18544706320311,"endHours":24.431799157435556,"quality":"inauspicious"},{"name":"Udveg","start":"00:26","end":"01:41","startHours":24.431799157435556,"endHours":25.678151251668,"quality":"inauspicious"},{"name":"Chala","start":"01:41","end":"02:55","startHours":25.678151251668,"endHours":26.924503345900447,"quality":"neutral"},{"name":"Labha","start":"02:55","end":"04:10","startHours":26.924503345900447,"endHours":28.17085544013289,"quality":"auspicious"},{"name":"Amṛta","start":"04:10","end":"05:25","startHours":28.17085544013289,"endHours":29.41720753436534,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.417207534365337,"endHours":6.417207534365337,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.417207534365337,"endHours":7.417207534365337,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.417207534365337,"endHours":8.417207534365337,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.417207534365337,"endHours":9.417207534365337,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.417207534365337,"endHours":10.417207534365337,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.417207534365337,"endHours":11.417207534365337,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.417207534365337,"endHours":12.417207534365337,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.417207534365337,"endHours":13.417207534365337,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.417207534365337,"endHours":14.417207534365337,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.417207534365337,"endHours":15.417207534365337,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.417207534365337,"endHours":16.41720753436534,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.41720753436534,"endHours":17.41720753436534,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.41720753436534,"endHours":18.41720753436534,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.41720753436534,"endHours":19.41720753436534,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.41720753436534,"endHours":20.41720753436534,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.41720753436534,"endHours":21.41720753436534,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.41720753436534,"endHours":22.41720753436534,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.41720753436534,"endHours":23.41720753436534,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.41720753436534,"endHours":24.41720753436534,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.41720753436534,"endHours":25.41720753436534,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.41720753436534,"endHours":26.41720753436534,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.41720753436534,"endHours":27.41720753436534,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.41720753436534,"endHours":28.41720753436534,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.41720753436534,"endHours":29.41720753436534,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North","rahuVasa":"North-West","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.375668663057553,"eotMinutes":-9.349949446133257,"ayanamsa":22.736}},"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":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Daśamī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"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 15, 1920 CE · Perth, Australia · Vidhyamitra","description":"January 15, 1920 CE for Perth, Australia: Kṛṣṇa Daśamī, sūryodaya 05:25, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1920-01-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1920-01-15","sa":"https://sa.vidhyamitra.com/city/perth/1920-01-15","hi":"https://hi.vidhyamitra.com/city/perth/1920-01-15","x-default":"https://vidhyamitra.com/city/perth/1920-01-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:31:32.373Z","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":"2026-05-31T02:31:32.373Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:31:32.373Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}