{"id":"vidhyamitra:city-day:perth:1979-12-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1979-12-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-12-06","date_display":"December 6, 1979 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":1979,"month":12,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444213.770833,"kali_year":5081,"ahargana":1855748.2708,"sun":{"sidereal_longitude":229.3211,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.151,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":209.83,"elapsed_within_tithi_degrees":5.83},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.151,"elapsed_within_degrees":12.4844},"yoga":{"number":24,"name":"Śukla","sum_longitude":308.4721},"karana":{"half_tithi_index":34,"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":1979,"month":12,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444213.770833,"ahargana":1855748.2708,"kali_year":5081,"ayanamsa_lahiri":23.5726,"grahas":{"sun":{"sidereal_longitude":229.73701700000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":77.848817,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false,"latitude":-3.6565},"mars":{"sidereal_longitude":133.398617,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":209.43481700000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":135.76351699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":255.99001700000008,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":152.33611700000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":133.5261,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":313.5261,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"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":1979,"month":12,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444213.770833,"kali_year":5081,"ahargana":1855748.2708,"sun":{"sidereal_longitude":229.3211,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":79.151,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":209.83,"elapsed_within_tithi_degrees":5.83},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.151,"elapsed_within_degrees":12.4844},"yoga":{"number":24,"name":"Śukla","sum_longitude":308.4721},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.657,"elongation":150.17},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.657,"opposition_distance":29.83}},"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":"05:04","sunsetLocal":"19:12","solarNoonLocal":"12:08","dayLengthHours":14.132358821486322,"dayLengthDisplay":"14 Hours 07 Mins 56 Secs","nightLengthDisplay":"9 Hours 52 Mins 04 Secs","moonriseLocal":"20:59","moonsetLocal":"07:03","rahuKala":{"name":"Rāhu Kāla","start":"13:54","end":"15:40","startHours":13.906796861439929,"endHours":15.67334171412572,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:04","end":"06:50","startHours":5.074072598010977,"endHours":6.840617450696767,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:36","end":"10:22","startHours":8.607162303382557,"endHours":10.373707156068349,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:51","startHours":8.371622989691119,"endHours":8.842701617073995,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:40","end":"06:02","startHours":5.662920882239574,"endHours":6.039783784145875,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:40","end":"12:37","startHours":11.669173381371262,"endHours":12.611330636137016,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:11","end":"04:08","startHours":3.189758088479467,"endHours":4.131915343245222,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:54","end":"05:04","startHours":3.8963760295537835,"endHours":5.074072598010977,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:26","startHours":14.495645145668526,"endHours":15.43780240043428,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:00","end":"19:24","startHours":19.0064314194973,"endHours":19.4064314194973,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:12","end":"19:48","startHours":19.2064314194973,"endHours":19.795279703725896,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:57","end":"20:42","startHours":18.9564314194973,"endHours":20.7064314194973,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:40","end":"00:37","startHours":23.669173381371262,"endHours":24.611330636137016,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:04","end":"06:50","startHours":5.074072598010977,"endHours":6.840617450696767,"quality":"auspicious"},{"name":"Roga","start":"06:50","end":"08:36","startHours":6.840617450696767,"endHours":8.607162303382557,"quality":"inauspicious"},{"name":"Udveg","start":"08:36","end":"10:22","startHours":8.607162303382557,"endHours":10.373707156068349,"quality":"inauspicious"},{"name":"Chala","start":"10:22","end":"12:08","startHours":10.373707156068349,"endHours":12.140252008754139,"quality":"neutral"},{"name":"Labha","start":"12:08","end":"13:54","startHours":12.140252008754139,"endHours":13.906796861439929,"quality":"auspicious"},{"name":"Amṛta","start":"13:54","end":"15:40","startHours":13.906796861439929,"endHours":15.67334171412572,"quality":"auspicious"},{"name":"Kāla","start":"15:40","end":"17:26","startHours":15.67334171412572,"endHours":17.43988656681151,"quality":"inauspicious"},{"name":"Śubha","start":"17:26","end":"19:12","startHours":17.43988656681151,"endHours":19.2064314194973,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:12","end":"20:26","startHours":19.2064314194973,"endHours":20.43988656681151,"quality":"auspicious"},{"name":"Kāla","start":"20:26","end":"21:40","startHours":20.43988656681151,"endHours":21.67334171412572,"quality":"inauspicious"},{"name":"Śubha","start":"21:40","end":"22:54","startHours":21.67334171412572,"endHours":22.90679686143993,"quality":"auspicious"},{"name":"Roga","start":"22:54","end":"00:08","startHours":22.90679686143993,"endHours":24.14025200875414,"quality":"inauspicious"},{"name":"Udveg","start":"00:08","end":"01:22","startHours":24.14025200875414,"endHours":25.37370715606835,"quality":"inauspicious"},{"name":"Chala","start":"01:22","end":"02:36","startHours":25.37370715606835,"endHours":26.60716230338256,"quality":"neutral"},{"name":"Labha","start":"02:36","end":"03:50","startHours":26.60716230338256,"endHours":27.84061745069677,"quality":"auspicious"},{"name":"Amṛta","start":"03:50","end":"05:04","startHours":27.84061745069677,"endHours":29.07407259801098,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:04","end":"06:04","startHours":5.074072598010977,"endHours":6.074072598010977,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:04","end":"07:04","startHours":6.074072598010977,"endHours":7.074072598010977,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:04","end":"08:04","startHours":7.074072598010977,"endHours":8.074072598010977,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:04","end":"09:04","startHours":8.074072598010977,"endHours":9.074072598010977,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:04","end":"10:04","startHours":9.074072598010977,"endHours":10.074072598010977,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:04","end":"11:04","startHours":10.074072598010977,"endHours":11.074072598010977,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:04","end":"12:04","startHours":11.074072598010977,"endHours":12.074072598010977,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:04","end":"13:04","startHours":12.074072598010977,"endHours":13.074072598010977,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:04","end":"14:04","startHours":13.074072598010977,"endHours":14.074072598010977,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:04","end":"15:04","startHours":14.074072598010977,"endHours":15.074072598010977,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:04","end":"16:04","startHours":15.074072598010977,"endHours":16.07407259801098,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:04","end":"17:04","startHours":16.07407259801098,"endHours":17.07407259801098,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:04","end":"18:04","startHours":17.07407259801098,"endHours":18.07407259801098,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:04","end":"19:04","startHours":18.07407259801098,"endHours":19.07407259801098,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:04","end":"20:04","startHours":19.07407259801098,"endHours":20.07407259801098,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:04","end":"21:04","startHours":20.07407259801098,"endHours":21.07407259801098,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:04","end":"22:04","startHours":21.07407259801098,"endHours":22.07407259801098,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:04","end":"23:04","startHours":22.07407259801098,"endHours":23.07407259801098,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:04","end":"00:04","startHours":23.07407259801098,"endHours":24.07407259801098,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:04","end":"01:04","startHours":24.07407259801098,"endHours":25.07407259801098,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:04","end":"02:04","startHours":25.07407259801098,"endHours":26.07407259801098,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:04","end":"03:04","startHours":26.07407259801098,"endHours":27.07407259801098,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:04","end":"04:04","startHours":27.07407259801098,"endHours":28.07407259801098,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:04","end":"05:04","startHours":28.07407259801098,"endHours":29.07407259801098,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Mausala","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":-22.39416859724687,"eotMinutes":8.142879474751563,"ayanamsa":23.5726}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"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":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Tṛtīyā · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"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 December 6, 1979 CE · Perth, Australia · Vidhyamitra","description":"December 6, 1979 CE for Perth, Australia: Kṛṣṇa Tṛtīyā, sūryodaya 05:04, sūryāsta 19:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1979-12-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1979-12-06","sa":"https://sa.vidhyamitra.com/city/perth/1979-12-06","hi":"https://hi.vidhyamitra.com/city/perth/1979-12-06","x-default":"https://vidhyamitra.com/city/perth/1979-12-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T12:58:30.247Z","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":"2026-06-01T12:58:30.247Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T12:58:30.247Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}