{"id":"vidhyamitra:city-day:sydney:1981-01-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sydney/1981-01-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-16","date_display":"January 16, 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":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444620.770833,"kali_year":5082,"ahargana":1856155.2708,"sun":{"sidereal_longitude":272.183,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":37.9491,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.7661,"elapsed_within_tithi_degrees":5.7661},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.9491,"elapsed_within_degrees":11.2824},"yoga":{"number":24,"name":"Śukla","sum_longitude":310.1321},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444620.770833,"ahargana":1856155.2708,"kali_year":5082,"ayanamsa_lahiri":23.5882,"grahas":{"sun":{"sidereal_longitude":272.24006699999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":36.80296699999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":-4.3256},"mars":{"sidereal_longitude":289.40186700000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":282.42036699999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.727167,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":252.63686700000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.95556699999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":111.9613,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":291.9613,"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":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444620.770833,"kali_year":5082,"ahargana":1856155.2708,"sun":{"sidereal_longitude":272.183,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":37.9491,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.7661,"elapsed_within_tithi_degrees":5.7661},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.9491,"elapsed_within_degrees":11.2824},"yoga":{"number":24,"name":"Śukla","sum_longitude":310.1321},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.326,"elongation":125.766},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.326,"opposition_distance":54.234}},"eclipse_window_40days":[{"offset_days":4,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":20,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"05:01","sunsetLocal":"19:09","solarNoonLocal":"12:05","dayLengthHours":14.13694348497544,"dayLengthDisplay":"14 Hours 08 Mins 13 Secs","nightLengthDisplay":"9 Hours 51 Mins 47 Secs","moonriseLocal":"15:17","moonsetLocal":"01:29","rahuKala":{"name":"Rāhu Kāla","start":"10:19","end":"12:05","startHours":10.313810423407697,"endHours":12.080928359029627,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:37","end":"17:23","startHours":15.615164230273486,"endHours":17.38228216589542,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:47","end":"08:33","startHours":6.779574552163837,"endHours":8.546692487785766,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:19","end":"08:47","startHours":8.311076763036176,"endHours":8.782308212535357,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:36","end":"05:59","startHours":5.601495928415884,"endHours":5.978481088015228,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:33","startHours":11.609696909530447,"endHours":12.552159808528808,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:08","end":"04:04","startHours":3.127530818545181,"endHours":4.069993717543544,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:50","end":"05:01","startHours":3.8343779927939536,"endHours":5.012456616541907,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:23","startHours":14.437085606525532,"endHours":15.379548505523895,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.949400101517348,"endHours":19.349400101517347,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:44","startHours":19.149400101517347,"endHours":19.738439413391323,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.899400101517347,"endHours":20.649400101517347,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:33","startHours":23.609696909530445,"endHours":24.55215980852881,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:01","end":"06:47","startHours":5.012456616541907,"endHours":6.779574552163837,"quality":"neutral"},{"name":"Labha","start":"06:47","end":"08:33","startHours":6.779574552163837,"endHours":8.546692487785766,"quality":"auspicious"},{"name":"Amṛta","start":"08:33","end":"10:19","startHours":8.546692487785766,"endHours":10.313810423407697,"quality":"auspicious"},{"name":"Kāla","start":"10:19","end":"12:05","startHours":10.313810423407697,"endHours":12.080928359029627,"quality":"inauspicious"},{"name":"Śubha","start":"12:05","end":"13:51","startHours":12.080928359029627,"endHours":13.848046294651557,"quality":"auspicious"},{"name":"Roga","start":"13:51","end":"15:37","startHours":13.848046294651557,"endHours":15.615164230273486,"quality":"inauspicious"},{"name":"Udveg","start":"15:37","end":"17:23","startHours":15.615164230273486,"endHours":17.38228216589542,"quality":"inauspicious"},{"name":"Chala","start":"17:23","end":"19:09","startHours":17.38228216589542,"endHours":19.149400101517347,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:09","end":"20:23","startHours":19.149400101517347,"endHours":20.38228216589542,"quality":"inauspicious"},{"name":"Udveg","start":"20:23","end":"21:37","startHours":20.38228216589542,"endHours":21.615164230273486,"quality":"inauspicious"},{"name":"Chala","start":"21:37","end":"22:51","startHours":21.615164230273486,"endHours":22.848046294651557,"quality":"neutral"},{"name":"Labha","start":"22:51","end":"00:05","startHours":22.848046294651557,"endHours":24.080928359029627,"quality":"auspicious"},{"name":"Amṛta","start":"00:05","end":"01:19","startHours":24.080928359029627,"endHours":25.3138104234077,"quality":"auspicious"},{"name":"Kāla","start":"01:19","end":"02:33","startHours":25.3138104234077,"endHours":26.54669248778577,"quality":"inauspicious"},{"name":"Śubha","start":"02:33","end":"03:47","startHours":26.54669248778577,"endHours":27.779574552163837,"quality":"auspicious"},{"name":"Roga","start":"03:47","end":"05:01","startHours":27.779574552163837,"endHours":29.012456616541908,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:01","end":"06:01","startHours":5.012456616541907,"endHours":6.012456616541907,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:01","end":"07:01","startHours":6.012456616541907,"endHours":7.012456616541907,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:01","end":"08:01","startHours":7.012456616541907,"endHours":8.012456616541908,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:01","end":"09:01","startHours":8.012456616541908,"endHours":9.012456616541908,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:01","end":"10:01","startHours":9.012456616541908,"endHours":10.012456616541908,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:01","end":"11:01","startHours":10.012456616541908,"endHours":11.012456616541908,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:01","end":"12:01","startHours":11.012456616541908,"endHours":12.012456616541908,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:01","end":"13:01","startHours":12.012456616541908,"endHours":13.012456616541908,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:01","end":"14:01","startHours":13.012456616541908,"endHours":14.012456616541908,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:01","end":"15:01","startHours":14.012456616541908,"endHours":15.012456616541908,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:01","end":"16:01","startHours":15.012456616541908,"endHours":16.012456616541908,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:01","end":"17:01","startHours":16.012456616541908,"endHours":17.012456616541908,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:01","end":"18:01","startHours":17.012456616541908,"endHours":18.012456616541908,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:01","end":"19:01","startHours":18.012456616541908,"endHours":19.012456616541908,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:01","end":"20:01","startHours":19.012456616541908,"endHours":20.012456616541908,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:01","end":"21:01","startHours":20.012456616541908,"endHours":21.012456616541908,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:01","end":"22:01","startHours":21.012456616541908,"endHours":22.012456616541908,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:01","end":"23:01","startHours":22.012456616541908,"endHours":23.012456616541908,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:01","end":"00:01","startHours":23.012456616541908,"endHours":24.012456616541908,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:01","end":"01:01","startHours":24.012456616541908,"endHours":25.012456616541908,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:01","end":"02:01","startHours":25.012456616541908,"endHours":26.012456616541908,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:01","end":"03:01","startHours":26.012456616541908,"endHours":27.012456616541908,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:01","end":"04:01","startHours":27.012456616541908,"endHours":28.012456616541908,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:01","end":"05:01","startHours":28.012456616541908,"endHours":29.012456616541908,"planetary_lord":"Mars"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Gada","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":-20.977453944900105,"eotMinutes":-9.692901541777706,"ayanamsa":23.5882}},"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 Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"putrada-ekadashi","name":"Pauṣa Putradā Ekādaśī","name_sanskrit":"पौष पुत्रदा एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Ekādaśī granting putra-prāpti.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Pauṣa"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"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 16, 1981 CE · Sydney, Australia · Vidhyamitra","description":"January 16, 1981 CE for Sydney, Australia: Śukla Ekādaśī, sūryodaya 05:01, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sydney/1981-01-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sydney/1981-01-16","sa":"https://sa.vidhyamitra.com/city/sydney/1981-01-16","hi":"https://hi.vidhyamitra.com/city/sydney/1981-01-16","x-default":"https://vidhyamitra.com/city/sydney/1981-01-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T01:36:43.839Z","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":"2026-06-03T01:36:43.839Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T01:36:43.839Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}