{"id":"vidhyamitra:city-day:sydney:1981-12-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sydney/1981-12-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-01","date_display":"December 1, 1981 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":1981,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444939.770833,"kali_year":5083,"ahargana":1856474.2708,"sun":{"sidereal_longitude":224.7032,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.5975,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.8943,"elapsed_within_tithi_degrees":3.8943},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.5975,"elapsed_within_degrees":9.9308},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3007},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1981,"month":12,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444939.770833,"ahargana":1856474.2708,"kali_year":5083,"ayanamsa_lahiri":23.6004,"grahas":{"sun":{"sidereal_longitude":225.160079,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":273.3644790000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false,"latitude":-0.1207},"mars":{"sidereal_longitude":149.26097900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":220.010179,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":187.56957899999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":270.78167899999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":175.25177899999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":95.0592,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":275.0592,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1981,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444939.770833,"kali_year":5083,"ahargana":1856474.2708,"sun":{"sidereal_longitude":224.7032,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.5975,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.8943,"elapsed_within_tithi_degrees":3.8943},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.5975,"elapsed_within_degrees":9.9308},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3007},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.121,"elongation":51.894},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.121,"opposition_distance":128.106}},"eclipse_window_40days":[]},"city":{"slug":"sydney","name":"Sydney, Australia","lat":-33.8688,"lon":151.2093,"tz_offset_hours":10,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"sydney","name":"Sydney, Australia","lat":-33.8688,"lon":151.2093,"tz_offset_hours":10,"country":"AU","tier":"diaspora"},"sunriseLocal":"04:38","sunsetLocal":"18:52","solarNoonLocal":"11:45","dayLengthHours":14.221875935639723,"dayLengthDisplay":"14 Hours 13 Mins 19 Secs","nightLengthDisplay":"9 Hours 46 Mins 41 Secs","moonriseLocal":"07:56","moonsetLocal":"22:00","rahuKala":{"name":"Rāhu Kāla","start":"15:18","end":"17:05","startHours":15.30599814056992,"endHours":17.083732632524885,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:12","end":"09:58","startHours":8.19506017275006,"endHours":9.972794664705024,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:45","end":"13:32","startHours":11.75052915665999,"endHours":13.528263648614956,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"07:57","end":"08:26","startHours":7.958028907156064,"endHours":8.432091438344054,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:14","end":"05:37","startHours":5.232169352825117,"endHours":5.61141937777551,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:17","end":"12:13","startHours":11.276466625471999,"endHours":12.224591687847981,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:45","end":"03:41","startHours":2.743341064088166,"endHours":3.6914661264641473,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:27","end":"04:38","startHours":3.454434860870152,"endHours":4.639591188840129,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"15:04","startHours":14.120841812599943,"endHours":15.068966874975924,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:40","end":"19:04","startHours":18.661467124479852,"endHours":19.06146712447985,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:52","end":"19:27","startHours":18.86146712447985,"endHours":19.45404528846484,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:37","end":"20:22","startHours":18.61146712447985,"endHours":20.36146712447985,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:17","end":"00:13","startHours":23.276466625472,"endHours":24.22459168784798,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"04:38","end":"06:25","startHours":4.639591188840129,"endHours":6.417325680795094,"quality":"inauspicious"},{"name":"Udveg","start":"06:25","end":"08:12","startHours":6.417325680795094,"endHours":8.19506017275006,"quality":"inauspicious"},{"name":"Chala","start":"08:12","end":"09:58","startHours":8.19506017275006,"endHours":9.972794664705024,"quality":"neutral"},{"name":"Labha","start":"09:58","end":"11:45","startHours":9.972794664705024,"endHours":11.75052915665999,"quality":"auspicious"},{"name":"Amṛta","start":"11:45","end":"13:32","startHours":11.75052915665999,"endHours":13.528263648614956,"quality":"auspicious"},{"name":"Kāla","start":"13:32","end":"15:18","startHours":13.528263648614956,"endHours":15.30599814056992,"quality":"inauspicious"},{"name":"Śubha","start":"15:18","end":"17:05","startHours":15.30599814056992,"endHours":17.083732632524885,"quality":"auspicious"},{"name":"Roga","start":"17:05","end":"18:52","startHours":17.083732632524885,"endHours":18.86146712447985,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:52","end":"20:05","startHours":18.86146712447985,"endHours":20.083732632524885,"quality":"inauspicious"},{"name":"Śubha","start":"20:05","end":"21:18","startHours":20.083732632524885,"endHours":21.30599814056992,"quality":"auspicious"},{"name":"Roga","start":"21:18","end":"22:32","startHours":21.30599814056992,"endHours":22.528263648614956,"quality":"inauspicious"},{"name":"Udveg","start":"22:32","end":"23:45","startHours":22.528263648614956,"endHours":23.75052915665999,"quality":"inauspicious"},{"name":"Chala","start":"23:45","end":"00:58","startHours":23.75052915665999,"endHours":24.972794664705024,"quality":"neutral"},{"name":"Labha","start":"00:58","end":"02:12","startHours":24.972794664705024,"endHours":26.19506017275006,"quality":"auspicious"},{"name":"Amṛta","start":"02:12","end":"03:25","startHours":26.19506017275006,"endHours":27.417325680795095,"quality":"auspicious"},{"name":"Kāla","start":"03:25","end":"04:38","startHours":27.417325680795095,"endHours":28.63959118884013,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"04:38","end":"05:38","startHours":4.639591188840129,"endHours":5.639591188840129,"planetary_lord":"Mars"},{"name":"Hora 2","start":"05:38","end":"06:38","startHours":5.639591188840129,"endHours":6.639591188840129,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"06:38","end":"07:38","startHours":6.639591188840129,"endHours":7.639591188840129,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"07:38","end":"08:38","startHours":7.639591188840129,"endHours":8.639591188840129,"planetary_lord":"Moon"},{"name":"Hora 5","start":"08:38","end":"09:38","startHours":8.639591188840129,"endHours":9.639591188840129,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"09:38","end":"10:38","startHours":9.639591188840129,"endHours":10.639591188840129,"planetary_lord":"Venus"},{"name":"Hora 7","start":"10:38","end":"11:38","startHours":10.639591188840129,"endHours":11.639591188840129,"planetary_lord":"Sun"},{"name":"Hora 8","start":"11:38","end":"12:38","startHours":11.639591188840129,"endHours":12.639591188840129,"planetary_lord":"Mars"},{"name":"Hora 9","start":"12:38","end":"13:38","startHours":12.639591188840129,"endHours":13.639591188840129,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"13:38","end":"14:38","startHours":13.639591188840129,"endHours":14.639591188840129,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"14:38","end":"15:38","startHours":14.639591188840129,"endHours":15.639591188840129,"planetary_lord":"Moon"},{"name":"Hora 12","start":"15:38","end":"16:38","startHours":15.639591188840129,"endHours":16.63959118884013,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"16:38","end":"17:38","startHours":16.63959118884013,"endHours":17.63959118884013,"planetary_lord":"Venus"},{"name":"Hora 14","start":"17:38","end":"18:38","startHours":17.63959118884013,"endHours":18.63959118884013,"planetary_lord":"Sun"},{"name":"Hora 15","start":"18:38","end":"19:38","startHours":18.63959118884013,"endHours":19.63959118884013,"planetary_lord":"Mars"},{"name":"Hora 16","start":"19:38","end":"20:38","startHours":19.63959118884013,"endHours":20.63959118884013,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"20:38","end":"21:38","startHours":20.63959118884013,"endHours":21.63959118884013,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"21:38","end":"22:38","startHours":21.63959118884013,"endHours":22.63959118884013,"planetary_lord":"Moon"},{"name":"Hora 19","start":"22:38","end":"23:38","startHours":22.63959118884013,"endHours":23.63959118884013,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"23:38","end":"00:38","startHours":23.63959118884013,"endHours":24.63959118884013,"planetary_lord":"Venus"},{"name":"Hora 21","start":"00:38","end":"01:38","startHours":24.63959118884013,"endHours":25.63959118884013,"planetary_lord":"Sun"},{"name":"Hora 22","start":"01:38","end":"02:38","startHours":25.63959118884013,"endHours":26.63959118884013,"planetary_lord":"Mars"},{"name":"Hora 23","start":"02:38","end":"03:38","startHours":26.63959118884013,"endHours":27.63959118884013,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"03:38","end":"04:38","startHours":27.63959118884013,"endHours":28.63959118884013,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.759790397531212,"eotMinutes":10.131050600400467,"ayanamsa":23.6004}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"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 Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"sydney"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 1, 1981 CE · Sydney, Australia · Vidhyamitra","description":"December 1, 1981 CE for Sydney, Australia: Śukla Pañcamī, sūryodaya 04:38, sūryāsta 18:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sydney/1981-12-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sydney/1981-12-01","sa":"https://sa.vidhyamitra.com/city/sydney/1981-12-01","hi":"https://hi.vidhyamitra.com/city/sydney/1981-12-01","x-default":"https://vidhyamitra.com/city/sydney/1981-12-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T22:08:40.297Z","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":"2026-06-02T22:08:40.297Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T22:08:40.297Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}