{"id":"vidhyamitra:city-day:perth:2180-12-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2180-12-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2180-12-04","date_display":"December 4, 2180 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":2180,"month":12,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517626.770833,"kali_year":5282,"ahargana":1929161.2708,"sun":{"sidereal_longitude":225.2215,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":67.202,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":201.9805,"elapsed_within_tithi_degrees":9.9805},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.202,"elapsed_within_degrees":0.5353},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.4235},"karana":{"half_tithi_index":33,"name":"Gara"},"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":2180,"month":12,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517626.770833,"ahargana":1929161.2708,"kali_year":5282,"ayanamsa_lahiri":26.3804,"grahas":{"sun":{"sidereal_longitude":226.14800100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":65.637201,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false,"latitude":-3.0931},"mars":{"sidereal_longitude":57.556700999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":238.828801,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":113.76730099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":208.514001,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":81.28180099999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":203.7521,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":23.7521,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":2180,"month":12,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517626.770833,"kali_year":5282,"ahargana":1929161.2708,"sun":{"sidereal_longitude":225.2215,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":67.202,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":201.9805,"elapsed_within_tithi_degrees":9.9805},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.202,"elapsed_within_degrees":0.5353},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.4235},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.093,"elongation":158.02},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.093,"opposition_distance":21.98}},"eclipse_window_40days":[{"offset_days":-2,"type":"lunar","occurs":true,"moon_latitude":-1.399,"opposition_distance":1.186}]},"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":"05:04","sunsetLocal":"19:11","solarNoonLocal":"12:08","dayLengthHours":14.12227881137921,"dayLengthDisplay":"14 Hours 07 Mins 20 Secs","nightLengthDisplay":"9 Hours 52 Mins 40 Secs","moonriseLocal":"20:25","moonsetLocal":"06:26","rahuKala":{"name":"Rāhu Kāla","start":"06:50","end":"08:36","startHours":6.830765036831075,"endHours":8.596049888253475,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:22","end":"12:08","startHours":10.361334739675877,"endHours":12.12661959109828,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:54","end":"15:39","startHours":13.89190444252068,"endHours":15.65718929394308,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:50","startHours":8.360678574730489,"endHours":8.831421201776463,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:39","end":"06:02","startHours":5.65390846921614,"endHours":6.030502570852919,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:36","startHours":11.655876964052306,"endHours":12.597362218144253,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:07","startHours":3.1825096772247785,"endHours":4.123994931316726,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:53","end":"05:04","startHours":3.8886236177937388,"endHours":5.065480185408673,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:25","startHours":14.480332726328147,"endHours":15.421817980420094,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:59","end":"19:23","startHours":18.987758996787885,"endHours":19.387758996787884,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:11","end":"19:47","startHours":19.187758996787885,"endHours":19.77618728059535,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:56","end":"20:41","startHours":18.937758996787885,"endHours":20.687758996787885,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:36","startHours":23.655876964052307,"endHours":24.59736221814425,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:04","end":"06:50","startHours":5.065480185408673,"endHours":6.830765036831075,"quality":"auspicious"},{"name":"Kāla","start":"06:50","end":"08:36","startHours":6.830765036831075,"endHours":8.596049888253475,"quality":"inauspicious"},{"name":"Śubha","start":"08:36","end":"10:22","startHours":8.596049888253475,"endHours":10.361334739675877,"quality":"auspicious"},{"name":"Roga","start":"10:22","end":"12:08","startHours":10.361334739675877,"endHours":12.12661959109828,"quality":"inauspicious"},{"name":"Udveg","start":"12:08","end":"13:54","startHours":12.12661959109828,"endHours":13.89190444252068,"quality":"inauspicious"},{"name":"Chala","start":"13:54","end":"15:39","startHours":13.89190444252068,"endHours":15.65718929394308,"quality":"neutral"},{"name":"Labha","start":"15:39","end":"17:25","startHours":15.65718929394308,"endHours":17.422474145365484,"quality":"auspicious"},{"name":"Amṛta","start":"17:25","end":"19:11","startHours":17.422474145365484,"endHours":19.187758996787885,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:11","end":"20:25","startHours":19.187758996787885,"endHours":20.422474145365484,"quality":"neutral"},{"name":"Labha","start":"20:25","end":"21:39","startHours":20.422474145365484,"endHours":21.657189293943084,"quality":"auspicious"},{"name":"Amṛta","start":"21:39","end":"22:54","startHours":21.657189293943084,"endHours":22.89190444252068,"quality":"auspicious"},{"name":"Kāla","start":"22:54","end":"00:08","startHours":22.89190444252068,"endHours":24.12661959109828,"quality":"inauspicious"},{"name":"Śubha","start":"00:08","end":"01:22","startHours":24.12661959109828,"endHours":25.36133473967588,"quality":"auspicious"},{"name":"Roga","start":"01:22","end":"02:36","startHours":25.36133473967588,"endHours":26.596049888253475,"quality":"inauspicious"},{"name":"Udveg","start":"02:36","end":"03:50","startHours":26.596049888253475,"endHours":27.830765036831075,"quality":"inauspicious"},{"name":"Chala","start":"03:50","end":"05:04","startHours":27.830765036831075,"endHours":29.065480185408674,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:04","end":"06:04","startHours":5.065480185408673,"endHours":6.065480185408673,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:04","end":"07:04","startHours":6.065480185408673,"endHours":7.065480185408673,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:04","end":"08:04","startHours":7.065480185408673,"endHours":8.065480185408674,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:04","end":"09:04","startHours":8.065480185408674,"endHours":9.065480185408674,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:04","end":"10:04","startHours":9.065480185408674,"endHours":10.065480185408674,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:04","end":"11:04","startHours":10.065480185408674,"endHours":11.065480185408674,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:04","end":"12:04","startHours":11.065480185408674,"endHours":12.065480185408674,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:04","end":"13:04","startHours":12.065480185408674,"endHours":13.065480185408674,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:04","end":"14:04","startHours":13.065480185408674,"endHours":14.065480185408674,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:04","end":"15:04","startHours":14.065480185408674,"endHours":15.065480185408674,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:04","end":"16:04","startHours":15.065480185408674,"endHours":16.065480185408674,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:04","end":"17:04","startHours":16.065480185408674,"endHours":17.065480185408674,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:04","end":"18:04","startHours":17.065480185408674,"endHours":18.065480185408674,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:04","end":"19:04","startHours":18.065480185408674,"endHours":19.065480185408674,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:04","end":"20:04","startHours":19.065480185408674,"endHours":20.065480185408674,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:04","end":"21:04","startHours":20.065480185408674,"endHours":21.065480185408674,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:04","end":"22:04","startHours":21.065480185408674,"endHours":22.065480185408674,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:04","end":"23:04","startHours":22.065480185408674,"endHours":23.065480185408674,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:04","end":"00:04","startHours":23.065480185408674,"endHours":24.065480185408674,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:04","end":"01:04","startHours":24.065480185408674,"endHours":25.065480185408674,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:04","end":"02:04","startHours":25.065480185408674,"endHours":26.065480185408674,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:04","end":"03:04","startHours":26.065480185408674,"endHours":27.065480185408674,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:04","end":"04:04","startHours":27.065480185408674,"endHours":28.065480185408674,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:04","end":"05:04","startHours":28.065480185408674,"endHours":29.065480185408674,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","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":-22.295496023253904,"eotMinutes":8.960824534103129,"ayanamsa":26.3804}},"calendars":{"vikram_samvat":2237,"vikram_samvatsara":"Vijaya","saka_samvat":2102,"saka_samvatsara":"Vikrama","bengali_samvat":1587,"malayalam_era":1356,"nanakshahi_year":711,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","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 Kṛṣṇa Dvitīyā · Vikram 2237 Vijaya · Śaka 2102 Vikrama"},"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 4, 2180 CE · Perth, Australia · Vidhyamitra","description":"December 4, 2180 CE for Perth, Australia: Kṛṣṇa Dvitīyā, sūryodaya 05:04, sūryāsta 19:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2180-12-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2180-12-04","sa":"https://sa.vidhyamitra.com/city/perth/2180-12-04","hi":"https://hi.vidhyamitra.com/city/perth/2180-12-04","x-default":"https://vidhyamitra.com/city/perth/2180-12-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:13:00.681Z","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":"2026-06-01T08:13:00.681Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:13:00.681Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}