{"id":"vidhyamitra:city-day:perth:1920-10-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1920-10-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-10-28","date_display":"October 28, 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":10,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422625.770833,"kali_year":5022,"ahargana":1834160.2708,"sun":{"sidereal_longitude":191.0679,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":15.5486,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":184.4807,"elapsed_within_tithi_degrees":4.4807},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":15.5486,"elapsed_within_degrees":2.2153},"yoga":{"number":16,"name":"Siddhi","sum_longitude":206.6165},"karana":{"half_tithi_index":30,"name":"Bālava"},"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":10,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422625.770833,"ahargana":1834160.2708,"kali_year":5022,"ayanamsa_lahiri":22.7469,"grahas":{"sun":{"sidereal_longitude":191.573038,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":17.45953800000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":0.1423},"mars":{"sidereal_longitude":255.306738,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":216.66713800000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":140.244638,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":223.077138,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":148.483138,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":197.3623,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":17.3623,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":10,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422625.770833,"kali_year":5022,"ahargana":1834160.2708,"sun":{"sidereal_longitude":191.0679,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":15.5486,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":184.4807,"elapsed_within_tithi_degrees":4.4807},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":15.5486,"elapsed_within_degrees":2.2153},"yoga":{"number":16,"name":"Siddhi","sum_longitude":206.6165},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.142,"elongation":175.519},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.142,"opposition_distance":4.481}},"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":"18:37","solarNoonLocal":"12:00","dayLengthHours":13.236039450956866,"dayLengthDisplay":"13 Hours 14 Mins 10 Secs","nightLengthDisplay":"10 Hours 45 Mins 50 Secs","moonriseLocal":"18:59","moonsetLocal":"05:48","rahuKala":{"name":"Rāhu Kāla","start":"13:39","end":"15:19","startHours":13.657078335711418,"endHours":15.311583267081026,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:23","end":"07:02","startHours":5.3845536788633765,"endHours":7.039058610232985,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:42","end":"10:21","startHours":8.693563541602593,"endHours":10.348068472972201,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:28","end":"08:55","startHours":8.472962884086645,"endHours":8.914164199118542,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:56","end":"06:17","startHours":5.936055322653246,"endHours":6.289016374678763,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:27","startHours":11.561372089309915,"endHours":12.443774719373705,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:30","startHours":3.6197484187357944,"endHours":4.502151048799585,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:17","end":"05:23","startHours":4.281550391283638,"endHours":5.3845536788633765,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:05","startHours":14.208579979501287,"endHours":15.090982609565078,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:25","end":"18:49","startHours":18.420593129820244,"endHours":18.820593129820242,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:37","end":"19:10","startHours":18.620593129820243,"endHours":19.172094773610112,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:22","end":"20:07","startHours":18.370593129820243,"endHours":20.120593129820243,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:27","startHours":23.561372089309913,"endHours":24.443774719373707,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:23","end":"07:02","startHours":5.3845536788633765,"endHours":7.039058610232985,"quality":"auspicious"},{"name":"Roga","start":"07:02","end":"08:42","startHours":7.039058610232985,"endHours":8.693563541602593,"quality":"inauspicious"},{"name":"Udveg","start":"08:42","end":"10:21","startHours":8.693563541602593,"endHours":10.348068472972201,"quality":"inauspicious"},{"name":"Chala","start":"10:21","end":"12:00","startHours":10.348068472972201,"endHours":12.00257340434181,"quality":"neutral"},{"name":"Labha","start":"12:00","end":"13:39","startHours":12.00257340434181,"endHours":13.657078335711418,"quality":"auspicious"},{"name":"Amṛta","start":"13:39","end":"15:19","startHours":13.657078335711418,"endHours":15.311583267081026,"quality":"auspicious"},{"name":"Kāla","start":"15:19","end":"16:58","startHours":15.311583267081026,"endHours":16.966088198450635,"quality":"inauspicious"},{"name":"Śubha","start":"16:58","end":"18:37","startHours":16.966088198450635,"endHours":18.620593129820243,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:37","end":"19:58","startHours":18.620593129820243,"endHours":19.966088198450635,"quality":"auspicious"},{"name":"Kāla","start":"19:58","end":"21:19","startHours":19.966088198450635,"endHours":21.311583267081026,"quality":"inauspicious"},{"name":"Śubha","start":"21:19","end":"22:39","startHours":21.311583267081026,"endHours":22.657078335711418,"quality":"auspicious"},{"name":"Roga","start":"22:39","end":"00:00","startHours":22.657078335711418,"endHours":24.00257340434181,"quality":"inauspicious"},{"name":"Udveg","start":"00:00","end":"01:21","startHours":24.00257340434181,"endHours":25.3480684729722,"quality":"inauspicious"},{"name":"Chala","start":"01:21","end":"02:42","startHours":25.3480684729722,"endHours":26.693563541602593,"quality":"neutral"},{"name":"Labha","start":"02:42","end":"04:02","startHours":26.693563541602593,"endHours":28.039058610232985,"quality":"auspicious"},{"name":"Amṛta","start":"04:02","end":"05:23","startHours":28.039058610232985,"endHours":29.384553678863377,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:23","end":"06:23","startHours":5.3845536788633765,"endHours":6.3845536788633765,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:23","end":"07:23","startHours":6.3845536788633765,"endHours":7.3845536788633765,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:23","end":"08:23","startHours":7.3845536788633765,"endHours":8.384553678863377,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:23","end":"09:23","startHours":8.384553678863377,"endHours":9.384553678863377,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:23","end":"10:23","startHours":9.384553678863377,"endHours":10.384553678863377,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:23","end":"11:23","startHours":10.384553678863377,"endHours":11.384553678863377,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:23","end":"12:23","startHours":11.384553678863377,"endHours":12.384553678863377,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:23","end":"13:23","startHours":12.384553678863377,"endHours":13.384553678863377,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:23","end":"14:23","startHours":13.384553678863377,"endHours":14.384553678863377,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:23","end":"15:23","startHours":14.384553678863377,"endHours":15.384553678863377,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:23","end":"16:23","startHours":15.384553678863377,"endHours":16.384553678863377,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:23","end":"17:23","startHours":16.384553678863377,"endHours":17.384553678863377,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:23","end":"18:23","startHours":17.384553678863377,"endHours":18.384553678863377,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:23","end":"19:23","startHours":18.384553678863377,"endHours":19.384553678863377,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:23","end":"20:23","startHours":19.384553678863377,"endHours":20.384553678863377,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:23","end":"21:23","startHours":20.384553678863377,"endHours":21.384553678863377,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:23","end":"22:23","startHours":21.384553678863377,"endHours":22.384553678863377,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:23","end":"23:23","startHours":22.384553678863377,"endHours":23.384553678863377,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:23","end":"00:23","startHours":23.384553678863377,"endHours":24.384553678863377,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:23","end":"01:23","startHours":24.384553678863377,"endHours":25.384553678863377,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:23","end":"02:23","startHours":25.384553678863377,"endHours":26.384553678863377,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:23","end":"03:23","startHours":26.384553678863377,"endHours":27.384553678863377,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:23","end":"04:23","startHours":27.384553678863377,"endHours":28.384553678863377,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:23","end":"05:23","startHours":28.384553678863377,"endHours":29.384553678863377,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.958598575383782,"eotMinutes":16.40359573949132,"ayanamsa":22.7469}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Pratipada · 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":[]},"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 October 28, 1920 CE · Perth, Australia · Vidhyamitra","description":"October 28, 1920 CE for Perth, Australia: Kṛṣṇa Pratipada, sūryodaya 05:23, sūryāsta 18:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1920-10-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1920-10-28","sa":"https://sa.vidhyamitra.com/city/perth/1920-10-28","hi":"https://hi.vidhyamitra.com/city/perth/1920-10-28","x-default":"https://vidhyamitra.com/city/perth/1920-10-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T10:25:28.591Z","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":"2026-05-31T10:25:28.591Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T10:25:28.591Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}