{"id":"vidhyamitra:city-day:perth:1900-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1900-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1900-12-17","date_display":"December 17, 1900 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":1900,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415370.770833,"kali_year":5002,"ahargana":1826905.2708,"sun":{"sidereal_longitude":242.0742,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":184.5157,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":302.4415,"elapsed_within_tithi_degrees":2.4415},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":184.5157,"elapsed_within_degrees":11.1824},"yoga":{"number":5,"name":"Śobhana","sum_longitude":66.5899},"karana":{"half_tithi_index":50,"name":"Bava"},"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":1900,"month":12,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2415370.770833,"ahargana":1826905.2708,"kali_year":5002,"ayanamsa_lahiri":22.4695,"grahas":{"sun":{"sidereal_longitude":242.198532,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":185.808632,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false,"latitude":-2.7221},"mars":{"sidereal_longitude":137.31703199999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":224.59593199999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":241.57923200000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"venus":{"sidereal_longitude":211.14243199999999,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":254.65653199999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":221.7671,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":41.7671,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":1900,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415370.770833,"kali_year":5002,"ahargana":1826905.2708,"sun":{"sidereal_longitude":242.0742,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":184.5157,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":302.4415,"elapsed_within_tithi_degrees":2.4415},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":184.5157,"elapsed_within_degrees":11.1824},"yoga":{"number":5,"name":"Śobhana","sum_longitude":66.5899},"karana":{"half_tithi_index":50,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.722,"elongation":57.558},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.722,"opposition_distance":122.442}},"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":"05:06","sunsetLocal":"19:20","solarNoonLocal":"12:13","dayLengthHours":14.228805219305867,"dayLengthDisplay":"14 Hours 13 Mins 44 Secs","nightLengthDisplay":"9 Hours 46 Mins 16 Secs","moonriseLocal":"01:57","moonsetLocal":"14:58","rahuKala":{"name":"Rāhu Kāla","start":"06:53","end":"08:40","startHours":6.885941894808493,"endHours":8.664542547221727,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:27","end":"12:13","startHours":10.44314319963496,"endHours":12.221743852048192,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:00","end":"15:47","startHours":14.000344504461426,"endHours":15.77894515687466,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:54","startHours":8.427395793566628,"endHours":8.901689300876825,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:42","end":"06:05","startHours":5.700208126533004,"endHours":6.0796429323811605,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:42","startHours":11.747450344737997,"endHours":12.696037359358387,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:13","end":"04:10","startHours":3.210167213154477,"endHours":4.158754227774868,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:55","end":"05:06","startHours":3.9216074741197704,"endHours":5.107341242395259,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:36","end":"15:33","startHours":14.59321138859917,"endHours":15.541798403219563,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.136146461701127,"endHours":19.536146461701126,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:56","startHours":19.336146461701126,"endHours":19.92901334583887,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.086146461701126,"endHours":20.836146461701126,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:42","startHours":23.747450344737995,"endHours":24.69603735935839,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:06","end":"06:53","startHours":5.107341242395259,"endHours":6.885941894808493,"quality":"auspicious"},{"name":"Kāla","start":"06:53","end":"08:40","startHours":6.885941894808493,"endHours":8.664542547221727,"quality":"inauspicious"},{"name":"Śubha","start":"08:40","end":"10:27","startHours":8.664542547221727,"endHours":10.44314319963496,"quality":"auspicious"},{"name":"Roga","start":"10:27","end":"12:13","startHours":10.44314319963496,"endHours":12.221743852048192,"quality":"inauspicious"},{"name":"Udveg","start":"12:13","end":"14:00","startHours":12.221743852048192,"endHours":14.000344504461426,"quality":"inauspicious"},{"name":"Chala","start":"14:00","end":"15:47","startHours":14.000344504461426,"endHours":15.77894515687466,"quality":"neutral"},{"name":"Labha","start":"15:47","end":"17:33","startHours":15.77894515687466,"endHours":17.557545809287895,"quality":"auspicious"},{"name":"Amṛta","start":"17:33","end":"19:20","startHours":17.557545809287895,"endHours":19.336146461701126,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:20","end":"20:33","startHours":19.336146461701126,"endHours":20.557545809287895,"quality":"neutral"},{"name":"Labha","start":"20:33","end":"21:47","startHours":20.557545809287895,"endHours":21.77894515687466,"quality":"auspicious"},{"name":"Amṛta","start":"21:47","end":"23:00","startHours":21.77894515687466,"endHours":23.000344504461427,"quality":"auspicious"},{"name":"Kāla","start":"23:00","end":"00:13","startHours":23.000344504461427,"endHours":24.221743852048192,"quality":"inauspicious"},{"name":"Śubha","start":"00:13","end":"01:27","startHours":24.221743852048192,"endHours":25.44314319963496,"quality":"auspicious"},{"name":"Roga","start":"01:27","end":"02:40","startHours":25.44314319963496,"endHours":26.66454254722173,"quality":"inauspicious"},{"name":"Udveg","start":"02:40","end":"03:53","startHours":26.66454254722173,"endHours":27.885941894808493,"quality":"inauspicious"},{"name":"Chala","start":"03:53","end":"05:06","startHours":27.885941894808493,"endHours":29.107341242395258,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:06","end":"06:06","startHours":5.107341242395259,"endHours":6.107341242395259,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:06","end":"07:06","startHours":6.107341242395259,"endHours":7.107341242395259,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:06","end":"08:06","startHours":7.107341242395259,"endHours":8.10734124239526,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:06","end":"09:06","startHours":8.10734124239526,"endHours":9.10734124239526,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:06","end":"10:06","startHours":9.10734124239526,"endHours":10.10734124239526,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:06","end":"11:06","startHours":10.10734124239526,"endHours":11.10734124239526,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:06","end":"12:06","startHours":11.10734124239526,"endHours":12.10734124239526,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:06","end":"13:06","startHours":12.10734124239526,"endHours":13.10734124239526,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:06","end":"14:06","startHours":13.10734124239526,"endHours":14.10734124239526,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:06","end":"15:06","startHours":14.10734124239526,"endHours":15.10734124239526,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:06","end":"16:06","startHours":15.10734124239526,"endHours":16.107341242395258,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:06","end":"17:06","startHours":16.107341242395258,"endHours":17.107341242395258,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:06","end":"18:06","startHours":17.107341242395258,"endHours":18.107341242395258,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:06","end":"19:06","startHours":18.107341242395258,"endHours":19.107341242395258,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:06","end":"20:06","startHours":19.107341242395258,"endHours":20.107341242395258,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:06","end":"21:06","startHours":20.107341242395258,"endHours":21.107341242395258,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:06","end":"22:06","startHours":21.107341242395258,"endHours":22.107341242395258,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:06","end":"23:06","startHours":22.107341242395258,"endHours":23.107341242395258,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:06","end":"00:06","startHours":23.107341242395258,"endHours":24.107341242395258,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:06","end":"01:06","startHours":24.107341242395258,"endHours":25.107341242395258,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:06","end":"02:06","startHours":25.107341242395258,"endHours":26.107341242395258,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:06","end":"03:06","startHours":26.107341242395258,"endHours":27.107341242395258,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:06","end":"04:06","startHours":27.107341242395258,"endHours":28.107341242395258,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:06","end":"05:06","startHours":28.107341242395258,"endHours":29.107341242395258,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"East (Pūrva)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.329072103427045,"eotMinutes":3.253368877108411,"ayanamsa":22.4695}},"calendars":{"vikram_samvat":1957,"vikram_samvatsara":"Pramādī","saka_samvat":1822,"saka_samvatsara":"Śārvarī","bengali_samvat":1307,"malayalam_era":1076,"nanakshahi_year":431,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Ekādaśī · Vikram 1957 Pramādī · Śaka 1822 Śārvarī"},"festivals":[{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"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 December 17, 1900 CE · Perth, Australia · Vidhyamitra","description":"December 17, 1900 CE for Perth, Australia: Kṛṣṇa Ekādaśī, sūryodaya 05:06, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1900-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1900-12-17","sa":"https://sa.vidhyamitra.com/city/perth/1900-12-17","hi":"https://hi.vidhyamitra.com/city/perth/1900-12-17","x-default":"https://vidhyamitra.com/city/perth/1900-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T10:08:46.418Z","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":"2026-06-01T10:08:46.418Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T10:08:46.418Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}