{"id":"vidhyamitra:city-day:sydney:1981-01-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sydney/1981-01-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-15","date_display":"January 15, 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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444619.770833,"kali_year":5082,"ahargana":1856154.2708,"sun":{"sidereal_longitude":271.1563,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":23.4808,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.3245,"elapsed_within_tithi_degrees":4.3245},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":23.4808,"elapsed_within_degrees":10.1474},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.637},"karana":{"half_tithi_index":18,"name":"Taitila"},"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":1981,"month":1,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444619.770833,"ahargana":1856154.2708,"kali_year":5082,"ayanamsa_lahiri":23.5881,"grahas":{"sun":{"sidereal_longitude":271.22160499999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":22.534505000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false,"latitude":-4.4985},"mars":{"sidereal_longitude":288.61330499999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":280.735905,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.69760499999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":251.38530500000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.94940499999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.0143,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.0143,"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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444619.770833,"kali_year":5082,"ahargana":1856154.2708,"sun":{"sidereal_longitude":271.1563,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":23.4808,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.3245,"elapsed_within_tithi_degrees":4.3245},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":23.4808,"elapsed_within_degrees":10.1474},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.637},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.499,"elongation":112.324},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.499,"opposition_distance":67.676}},"eclipse_window_40days":[{"offset_days":5,"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":"05:00","sunsetLocal":"19:09","solarNoonLocal":"12:05","dayLengthHours":14.156990215923996,"dayLengthDisplay":"14 Hours 09 Mins 25 Secs","nightLengthDisplay":"9 Hours 50 Mins 35 Secs","moonriseLocal":"14:13","moonsetLocal":"00:46","rahuKala":{"name":"Rāhu Kāla","start":"13:51","end":"15:37","startHours":13.844836267759383,"endHours":15.614460044749883,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:00","end":"06:46","startHours":4.996717382806887,"endHours":6.766341159797387,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:32","end":"10:18","startHours":8.535964936787886,"endHours":10.305588713778384,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:18","end":"08:46","startHours":8.30001509985582,"endHours":8.771914773719953,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:35","end":"05:58","startHours":5.586591975137053,"endHours":5.96411171422836,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:33","startHours":11.603312816904753,"endHours":12.547112164633019,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:07","end":"04:03","startHours":3.109118687350354,"endHours":4.052918035078621,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:49","end":"05:00","startHours":3.816968198146554,"endHours":4.996717382806887,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:23","startHours":14.43471086008955,"endHours":15.378510207817817,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.953707598730883,"endHours":19.35370759873088,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:45","startHours":19.153707598730882,"endHours":19.743582191061048,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.903707598730882,"endHours":20.653707598730882,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:33","startHours":23.60331281690475,"endHours":24.547112164633017,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:00","end":"06:46","startHours":4.996717382806887,"endHours":6.766341159797387,"quality":"auspicious"},{"name":"Roga","start":"06:46","end":"08:32","startHours":6.766341159797387,"endHours":8.535964936787886,"quality":"inauspicious"},{"name":"Udveg","start":"08:32","end":"10:18","startHours":8.535964936787886,"endHours":10.305588713778384,"quality":"inauspicious"},{"name":"Chala","start":"10:18","end":"12:05","startHours":10.305588713778384,"endHours":12.075212490768884,"quality":"neutral"},{"name":"Labha","start":"12:05","end":"13:51","startHours":12.075212490768884,"endHours":13.844836267759383,"quality":"auspicious"},{"name":"Amṛta","start":"13:51","end":"15:37","startHours":13.844836267759383,"endHours":15.614460044749883,"quality":"auspicious"},{"name":"Kāla","start":"15:37","end":"17:23","startHours":15.614460044749883,"endHours":17.384083821740383,"quality":"inauspicious"},{"name":"Śubha","start":"17:23","end":"19:09","startHours":17.384083821740383,"endHours":19.153707598730882,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:09","end":"20:23","startHours":19.153707598730882,"endHours":20.384083821740383,"quality":"auspicious"},{"name":"Kāla","start":"20:23","end":"21:37","startHours":20.384083821740383,"endHours":21.614460044749883,"quality":"inauspicious"},{"name":"Śubha","start":"21:37","end":"22:51","startHours":21.614460044749883,"endHours":22.844836267759383,"quality":"auspicious"},{"name":"Roga","start":"22:51","end":"00:05","startHours":22.844836267759383,"endHours":24.075212490768884,"quality":"inauspicious"},{"name":"Udveg","start":"00:05","end":"01:18","startHours":24.075212490768884,"endHours":25.305588713778384,"quality":"inauspicious"},{"name":"Chala","start":"01:18","end":"02:32","startHours":25.305588713778384,"endHours":26.535964936787884,"quality":"neutral"},{"name":"Labha","start":"02:32","end":"03:46","startHours":26.535964936787884,"endHours":27.766341159797385,"quality":"auspicious"},{"name":"Amṛta","start":"03:46","end":"05:00","startHours":27.766341159797385,"endHours":28.996717382806885,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:00","end":"06:00","startHours":4.996717382806887,"endHours":5.996717382806887,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:00","end":"07:00","startHours":5.996717382806887,"endHours":6.996717382806887,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:00","end":"08:00","startHours":6.996717382806887,"endHours":7.996717382806887,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:00","end":"09:00","startHours":7.996717382806887,"endHours":8.996717382806887,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:00","end":"10:00","startHours":8.996717382806887,"endHours":9.996717382806887,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:00","end":"11:00","startHours":9.996717382806887,"endHours":10.996717382806887,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:00","end":"12:00","startHours":10.996717382806887,"endHours":11.996717382806887,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:00","end":"13:00","startHours":11.996717382806887,"endHours":12.996717382806887,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:00","end":"14:00","startHours":12.996717382806887,"endHours":13.996717382806887,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:00","end":"15:00","startHours":13.996717382806887,"endHours":14.996717382806887,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:00","end":"16:00","startHours":14.996717382806887,"endHours":15.996717382806887,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:00","end":"17:00","startHours":15.996717382806887,"endHours":16.996717382806885,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:00","end":"18:00","startHours":16.996717382806885,"endHours":17.996717382806885,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:00","end":"19:00","startHours":17.996717382806885,"endHours":18.996717382806885,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:00","end":"20:00","startHours":18.996717382806885,"endHours":19.996717382806885,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:00","end":"21:00","startHours":19.996717382806885,"endHours":20.996717382806885,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:00","end":"22:00","startHours":20.996717382806885,"endHours":21.996717382806885,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:00","end":"23:00","startHours":21.996717382806885,"endHours":22.996717382806885,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:00","end":"00:00","startHours":22.996717382806885,"endHours":23.996717382806885,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:00","end":"01:00","startHours":23.996717382806885,"endHours":24.996717382806885,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:00","end":"02:00","startHours":24.996717382806885,"endHours":25.996717382806885,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:00","end":"03:00","startHours":25.996717382806885,"endHours":26.996717382806885,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:00","end":"04:00","startHours":26.996717382806885,"endHours":27.996717382806885,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:00","end":"05:00","startHours":27.996717382806885,"endHours":28.996717382806885,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.163115564621055,"eotMinutes":-9.349949446133257,"ayanamsa":23.5881}},"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":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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":"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 15, 1981 CE · Sydney, Australia · Vidhyamitra","description":"January 15, 1981 CE for Sydney, Australia: Śukla Daśamī, sūryodaya 05:00, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sydney/1981-01-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sydney/1981-01-15","sa":"https://sa.vidhyamitra.com/city/sydney/1981-01-15","hi":"https://hi.vidhyamitra.com/city/sydney/1981-01-15","x-default":"https://vidhyamitra.com/city/sydney/1981-01-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T07:02:13.898Z","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":"2026-06-03T07:02:13.898Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T07:02:13.898Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}