{"id":"vidhyamitra:city-day:sydney:1981-01-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sydney/1981-01-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-07","date_display":"January 7, 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":1,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444611.770833,"kali_year":5082,"ahargana":1856146.2708,"sun":{"sidereal_longitude":262.937,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":271.0319,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.0949,"elapsed_within_tithi_degrees":8.0949},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.0319,"elapsed_within_degrees":4.3652},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":173.9688},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444611.770833,"ahargana":1856146.2708,"kali_year":5082,"ayanamsa_lahiri":23.5878,"grahas":{"sun":{"sidereal_longitude":263.070211,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":271.92131100000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":1.6409},"mars":{"sidereal_longitude":282.313711,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":267.39741100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.350011,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":241.37661100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.83481099999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.4382,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.4382,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":1,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444611.770833,"kali_year":5082,"ahargana":1856146.2708,"sun":{"sidereal_longitude":262.937,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":271.0319,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.0949,"elapsed_within_tithi_degrees":8.0949},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.0319,"elapsed_within_degrees":4.3652},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":173.9688},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.641,"elongation":8.095},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.641,"opposition_distance":171.905}},"eclipse_window_40days":[{"offset_days":13,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"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":"04:53","sunsetLocal":"19:10","solarNoonLocal":"12:01","dayLengthHours":14.2921005052598,"dayLengthDisplay":"14 Hours 17 Mins 32 Secs","nightLengthDisplay":"9 Hours 42 Mins 28 Secs","moonriseLocal":"05:34","moonsetLocal":"19:40","rahuKala":{"name":"Rāhu Kāla","start":"12:01","end":"13:49","startHours":12.024247905123662,"endHours":13.810760468281135,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:40","end":"08:27","startHours":6.664710215651237,"endHours":8.451222778808711,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:14","end":"12:01","startHours":10.237735341966186,"endHours":12.024247905123662,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:13","end":"08:41","startHours":8.213021103721047,"endHours":8.689424453896375,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:28","end":"05:51","startHours":5.47370184021292,"endHours":5.854824520353181,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:33","end":"12:30","startHours":11.547844554948334,"endHours":12.500651255298987,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:58","end":"03:56","startHours":2.972584251792455,"endHours":3.925390952143108,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:41","end":"04:53","startHours":3.687189277055445,"endHours":4.878197652493761,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:22","startHours":14.406264656000292,"endHours":15.359071356350945,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:58","end":"19:22","startHours":18.97029815775356,"endHours":19.37029815775356,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:10","end":"19:46","startHours":19.17029815775356,"endHours":19.765802345472718,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:55","end":"20:40","startHours":18.92029815775356,"endHours":20.67029815775356,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:33","end":"00:30","startHours":23.54784455494833,"endHours":24.500651255298987,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"04:53","end":"06:40","startHours":4.878197652493761,"endHours":6.664710215651237,"quality":"auspicious"},{"name":"Amṛta","start":"06:40","end":"08:27","startHours":6.664710215651237,"endHours":8.451222778808711,"quality":"auspicious"},{"name":"Kāla","start":"08:27","end":"10:14","startHours":8.451222778808711,"endHours":10.237735341966186,"quality":"inauspicious"},{"name":"Śubha","start":"10:14","end":"12:01","startHours":10.237735341966186,"endHours":12.024247905123662,"quality":"auspicious"},{"name":"Roga","start":"12:01","end":"13:49","startHours":12.024247905123662,"endHours":13.810760468281135,"quality":"inauspicious"},{"name":"Udveg","start":"13:49","end":"15:36","startHours":13.810760468281135,"endHours":15.597273031438611,"quality":"inauspicious"},{"name":"Chala","start":"15:36","end":"17:23","startHours":15.597273031438611,"endHours":17.383785594596088,"quality":"neutral"},{"name":"Labha","start":"17:23","end":"19:10","startHours":17.383785594596088,"endHours":19.17029815775356,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:10","end":"20:23","startHours":19.17029815775356,"endHours":20.383785594596084,"quality":"inauspicious"},{"name":"Chala","start":"20:23","end":"21:36","startHours":20.383785594596084,"endHours":21.59727303143861,"quality":"neutral"},{"name":"Labha","start":"21:36","end":"22:49","startHours":21.59727303143861,"endHours":22.810760468281135,"quality":"auspicious"},{"name":"Amṛta","start":"22:49","end":"00:01","startHours":22.810760468281135,"endHours":24.02424790512366,"quality":"auspicious"},{"name":"Kāla","start":"00:01","end":"01:14","startHours":24.02424790512366,"endHours":25.237735341966186,"quality":"inauspicious"},{"name":"Śubha","start":"01:14","end":"02:27","startHours":25.237735341966186,"endHours":26.45122277880871,"quality":"auspicious"},{"name":"Roga","start":"02:27","end":"03:40","startHours":26.45122277880871,"endHours":27.664710215651233,"quality":"inauspicious"},{"name":"Udveg","start":"03:40","end":"04:53","startHours":27.664710215651233,"endHours":28.87819765249376,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"04:53","end":"05:53","startHours":4.878197652493761,"endHours":5.878197652493761,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"05:53","end":"06:53","startHours":5.878197652493761,"endHours":6.878197652493761,"planetary_lord":"Venus"},{"name":"Hora 3","start":"06:53","end":"07:53","startHours":6.878197652493761,"endHours":7.878197652493761,"planetary_lord":"Sun"},{"name":"Hora 4","start":"07:53","end":"08:53","startHours":7.878197652493761,"endHours":8.87819765249376,"planetary_lord":"Mars"},{"name":"Hora 5","start":"08:53","end":"09:53","startHours":8.87819765249376,"endHours":9.87819765249376,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"09:53","end":"10:53","startHours":9.87819765249376,"endHours":10.87819765249376,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"10:53","end":"11:53","startHours":10.87819765249376,"endHours":11.87819765249376,"planetary_lord":"Moon"},{"name":"Hora 8","start":"11:53","end":"12:53","startHours":11.87819765249376,"endHours":12.87819765249376,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"12:53","end":"13:53","startHours":12.87819765249376,"endHours":13.87819765249376,"planetary_lord":"Venus"},{"name":"Hora 10","start":"13:53","end":"14:53","startHours":13.87819765249376,"endHours":14.87819765249376,"planetary_lord":"Sun"},{"name":"Hora 11","start":"14:53","end":"15:53","startHours":14.87819765249376,"endHours":15.87819765249376,"planetary_lord":"Mars"},{"name":"Hora 12","start":"15:53","end":"16:53","startHours":15.87819765249376,"endHours":16.87819765249376,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"16:53","end":"17:53","startHours":16.87819765249376,"endHours":17.87819765249376,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"17:53","end":"18:53","startHours":17.87819765249376,"endHours":18.87819765249376,"planetary_lord":"Moon"},{"name":"Hora 15","start":"18:53","end":"19:53","startHours":18.87819765249376,"endHours":19.87819765249376,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"19:53","end":"20:53","startHours":19.87819765249376,"endHours":20.87819765249376,"planetary_lord":"Venus"},{"name":"Hora 17","start":"20:53","end":"21:53","startHours":20.87819765249376,"endHours":21.87819765249376,"planetary_lord":"Sun"},{"name":"Hora 18","start":"21:53","end":"22:53","startHours":21.87819765249376,"endHours":22.87819765249376,"planetary_lord":"Mars"},{"name":"Hora 19","start":"22:53","end":"23:53","startHours":22.87819765249376,"endHours":23.87819765249376,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"23:53","end":"00:53","startHours":23.87819765249376,"endHours":24.87819765249376,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"00:53","end":"01:53","startHours":24.87819765249376,"endHours":25.87819765249376,"planetary_lord":"Moon"},{"name":"Hora 22","start":"01:53","end":"02:53","startHours":25.87819765249376,"endHours":26.87819765249376,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"02:53","end":"03:53","startHours":26.87819765249376,"endHours":27.87819765249376,"planetary_lord":"Venus"},{"name":"Hora 24","start":"03:53","end":"04:53","startHours":27.87819765249376,"endHours":28.87819765249376,"planetary_lord":"Sun"}],"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":"South-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.398164314066854,"eotMinutes":-6.292074307419696,"ayanamsa":23.5878}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","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 Śukla Pratipada · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 January 7, 1981 CE · Sydney, Australia · Vidhyamitra","description":"January 7, 1981 CE for Sydney, Australia: Śukla Pratipada, sūryodaya 04:53, sūryāsta 19:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sydney/1981-01-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sydney/1981-01-07","sa":"https://sa.vidhyamitra.com/city/sydney/1981-01-07","hi":"https://hi.vidhyamitra.com/city/sydney/1981-01-07","x-default":"https://vidhyamitra.com/city/sydney/1981-01-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T18:24:09.935Z","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":"2026-06-02T18:24:09.935Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T18:24:09.935Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}