{"id":"vidhyamitra:city-day:perth:2102-12-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2102-12-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2102-12-11","date_display":"December 11, 2102 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":2102,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2489143.770833,"kali_year":5204,"ahargana":1900678.2708,"sun":{"sidereal_longitude":232.569,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":241.1317,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.5627,"elapsed_within_tithi_degrees":8.5627},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.1317,"elapsed_within_degrees":1.1317},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.7007},"karana":{"half_tithi_index":1,"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":2102,"month":12,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2489143.770833,"ahargana":1900678.2708,"kali_year":5204,"ayanamsa_lahiri":25.291,"grahas":{"sun":{"sidereal_longitude":233.25046099999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":243.78426100000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false,"latitude":-2.3687},"mars":{"sidereal_longitude":226.078261,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":251.173861,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":245.89386100000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"venus":{"sidereal_longitude":249.82766100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":209.57046100000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":272.9185,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":92.9185,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"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":2102,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2489143.770833,"kali_year":5204,"ahargana":1900678.2708,"sun":{"sidereal_longitude":232.569,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":241.1317,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.5627,"elapsed_within_tithi_degrees":8.5627},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.1317,"elapsed_within_degrees":1.1317},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.7007},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.369,"elongation":8.563},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.369,"opposition_distance":171.437}},"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":"05:05","sunsetLocal":"19:16","solarNoonLocal":"12:11","dayLengthHours":14.188703416707716,"dayLengthDisplay":"14 Hours 11 Mins 19 Secs","nightLengthDisplay":"9 Hours 48 Mins 41 Secs","moonriseLocal":"05:47","moonsetLocal":"19:59","rahuKala":{"name":"Rāhu Kāla","start":"06:51","end":"08:38","startHours":6.855401507325726,"endHours":8.62898943441419,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:24","end":"12:11","startHours":10.402577361502654,"endHours":12.176165288591118,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:57","end":"15:43","startHours":13.949753215679584,"endHours":15.723341142768048,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:24","end":"08:52","startHours":8.392511044135729,"endHours":8.865467824692653,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:40","end":"06:03","startHours":5.673009555933416,"endHours":6.051374980378955,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:39","startHours":11.703208508034194,"endHours":12.649122069148042,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.1899864580095656,"endHours":4.135900019123413,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:05","startHours":3.8994216288449515,"endHours":5.081813580237261,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:29","startHours":14.540949191375738,"endHours":15.486862752489586,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:04","end":"19:28","startHours":19.070516996944978,"endHours":19.470516996944976,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:16","end":"19:52","startHours":19.270516996944977,"endHours":19.861712972641133,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:01","end":"20:46","startHours":19.020516996944977,"endHours":20.770516996944977,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:39","startHours":23.703208508034194,"endHours":24.649122069148042,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:05","end":"06:51","startHours":5.081813580237261,"endHours":6.855401507325726,"quality":"auspicious"},{"name":"Kāla","start":"06:51","end":"08:38","startHours":6.855401507325726,"endHours":8.62898943441419,"quality":"inauspicious"},{"name":"Śubha","start":"08:38","end":"10:24","startHours":8.62898943441419,"endHours":10.402577361502654,"quality":"auspicious"},{"name":"Roga","start":"10:24","end":"12:11","startHours":10.402577361502654,"endHours":12.176165288591118,"quality":"inauspicious"},{"name":"Udveg","start":"12:11","end":"13:57","startHours":12.176165288591118,"endHours":13.949753215679584,"quality":"inauspicious"},{"name":"Chala","start":"13:57","end":"15:43","startHours":13.949753215679584,"endHours":15.723341142768048,"quality":"neutral"},{"name":"Labha","start":"15:43","end":"17:30","startHours":15.723341142768048,"endHours":17.496929069856513,"quality":"auspicious"},{"name":"Amṛta","start":"17:30","end":"19:16","startHours":17.496929069856513,"endHours":19.270516996944977,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:16","end":"20:30","startHours":19.270516996944977,"endHours":20.496929069856513,"quality":"neutral"},{"name":"Labha","start":"20:30","end":"21:43","startHours":20.496929069856513,"endHours":21.72334114276805,"quality":"auspicious"},{"name":"Amṛta","start":"21:43","end":"22:57","startHours":21.72334114276805,"endHours":22.949753215679586,"quality":"auspicious"},{"name":"Kāla","start":"22:57","end":"00:11","startHours":22.949753215679586,"endHours":24.17616528859112,"quality":"inauspicious"},{"name":"Śubha","start":"00:11","end":"01:24","startHours":24.17616528859112,"endHours":25.402577361502654,"quality":"auspicious"},{"name":"Roga","start":"01:24","end":"02:38","startHours":25.402577361502654,"endHours":26.62898943441419,"quality":"inauspicious"},{"name":"Udveg","start":"02:38","end":"03:51","startHours":26.62898943441419,"endHours":27.855401507325723,"quality":"inauspicious"},{"name":"Chala","start":"03:51","end":"05:05","startHours":27.855401507325723,"endHours":29.08181358023726,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:05","end":"06:05","startHours":5.081813580237261,"endHours":6.081813580237261,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:05","end":"07:05","startHours":6.081813580237261,"endHours":7.081813580237261,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:05","end":"08:05","startHours":7.081813580237261,"endHours":8.081813580237261,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:05","end":"09:05","startHours":8.081813580237261,"endHours":9.081813580237261,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:05","end":"10:05","startHours":9.081813580237261,"endHours":10.081813580237261,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:05","end":"11:05","startHours":10.081813580237261,"endHours":11.081813580237261,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:05","end":"12:05","startHours":11.081813580237261,"endHours":12.081813580237261,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:05","end":"13:05","startHours":12.081813580237261,"endHours":13.081813580237261,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:05","end":"14:05","startHours":13.081813580237261,"endHours":14.081813580237261,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:05","end":"15:05","startHours":14.081813580237261,"endHours":15.081813580237261,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:05","end":"16:05","startHours":15.081813580237261,"endHours":16.08181358023726,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:05","end":"17:05","startHours":16.08181358023726,"endHours":17.08181358023726,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:05","end":"18:05","startHours":17.08181358023726,"endHours":18.08181358023726,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:05","end":"19:05","startHours":18.08181358023726,"endHours":19.08181358023726,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:05","end":"20:05","startHours":19.08181358023726,"endHours":20.08181358023726,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:05","end":"21:05","startHours":20.08181358023726,"endHours":21.08181358023726,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:05","end":"22:05","startHours":21.08181358023726,"endHours":22.08181358023726,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:05","end":"23:05","startHours":22.08181358023726,"endHours":23.08181358023726,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:05","end":"00:05","startHours":23.08181358023726,"endHours":24.08181358023726,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:05","end":"01:05","startHours":24.08181358023726,"endHours":25.08181358023726,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:05","end":"02:05","startHours":25.08181358023726,"endHours":26.08181358023726,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:05","end":"03:05","startHours":26.08181358023726,"endHours":27.08181358023726,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:05","end":"04:05","startHours":27.08181358023726,"endHours":28.08181358023726,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:05","end":"05:05","startHours":28.08181358023726,"endHours":29.08181358023726,"planetary_lord":"Venus"}],"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.942375366808044,"eotMinutes":5.988082684532823,"ayanamsa":25.291}},"calendars":{"vikram_samvat":2159,"vikram_samvatsara":"Yuva","saka_samvat":2024,"saka_samvatsara":"Dundubhi","bengali_samvat":1509,"malayalam_era":1278,"nanakshahi_year":633,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pratipada · Vikram 2159 Yuva · Śaka 2024 Dundubhi"},"festivals":[],"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 11, 2102 CE · Perth, Australia · Vidhyamitra","description":"December 11, 2102 CE for Perth, Australia: Śukla Pratipada, sūryodaya 05:05, sūryāsta 19:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2102-12-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2102-12-11","sa":"https://sa.vidhyamitra.com/city/perth/2102-12-11","hi":"https://hi.vidhyamitra.com/city/perth/2102-12-11","x-default":"https://vidhyamitra.com/city/perth/2102-12-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T05:47:15.027Z","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":"2026-06-01T05:47:15.027Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T05:47:15.027Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}