{"id":"vidhyamitra:city-day:sydney:2011-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sydney/2011-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-01-18","date_display":"January 18, 2011 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":2011,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455579.770833,"kali_year":5112,"ahargana":1867114.2708,"sun":{"sidereal_longitude":273.453,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":68.6849,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2319,"elapsed_within_tithi_degrees":11.2319},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":68.6849,"elapsed_within_degrees":2.0182},"yoga":{"number":26,"name":"Indra","sum_longitude":342.1379},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":2011,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455579.770833,"ahargana":1867114.2708,"kali_year":5112,"ayanamsa_lahiri":24.0073,"grahas":{"sun":{"sidereal_longitude":273.56945199999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":69.16105199999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false,"latitude":0.2052},"mars":{"sidereal_longitude":277.490452,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":251.44805199999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":335.213252,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":226.75515199999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":172.90975200000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":251.3007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":71.3007,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"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":2011,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455579.770833,"kali_year":5112,"ahargana":1867114.2708,"sun":{"sidereal_longitude":273.453,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":68.6849,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2319,"elapsed_within_tithi_degrees":11.2319},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":68.6849,"elapsed_within_degrees":2.0182},"yoga":{"number":26,"name":"Indra","sum_longitude":342.1379},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.205,"elongation":155.232},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.205,"opposition_distance":24.768}},"eclipse_window_40days":[{"offset_days":-14,"type":"solar","occurs":true,"moon_latitude":0.37,"elongation":2.307}]},"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":"05:02","sunsetLocal":"19:09","solarNoonLocal":"12:06","dayLengthHours":14.101014958832092,"dayLengthDisplay":"14 Hours 06 Mins 04 Secs","nightLengthDisplay":"9 Hours 53 Mins 56 Secs","moonriseLocal":"17:32","moonsetLocal":"03:24","rahuKala":{"name":"Rāhu Kāla","start":"15:37","end":"17:23","startHours":15.617120899402849,"endHours":17.379747769256863,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:34","end":"10:20","startHours":8.566613419986805,"endHours":10.329240289840815,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:06","end":"13:51","startHours":12.091867159694829,"endHours":13.854494029548839,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:20","end":"08:48","startHours":8.33159650400627,"endHours":8.801630335967339,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:38","end":"06:00","startHours":5.628901970230119,"endHours":6.004929035798975,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:34","startHours":11.621833327733757,"endHours":12.561900991655897,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:10","end":"04:06","startHours":3.1612243524345027,"endHours":4.101292016356642,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:52","end":"05:02","startHours":3.8662751003761073,"endHours":5.041359680278782,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:23","startHours":14.442036319500176,"endHours":15.382103983422315,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.942374639110874,"endHours":19.342374639110872,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:44","startHours":19.142374639110873,"endHours":19.72991692906221,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.892374639110873,"endHours":20.642374639110873,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:34","startHours":23.62183332773376,"endHours":24.561900991655897,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:02","end":"06:48","startHours":5.041359680278782,"endHours":6.803986550132793,"quality":"inauspicious"},{"name":"Udveg","start":"06:48","end":"08:34","startHours":6.803986550132793,"endHours":8.566613419986805,"quality":"inauspicious"},{"name":"Chala","start":"08:34","end":"10:20","startHours":8.566613419986805,"endHours":10.329240289840815,"quality":"neutral"},{"name":"Labha","start":"10:20","end":"12:06","startHours":10.329240289840815,"endHours":12.091867159694829,"quality":"auspicious"},{"name":"Amṛta","start":"12:06","end":"13:51","startHours":12.091867159694829,"endHours":13.854494029548839,"quality":"auspicious"},{"name":"Kāla","start":"13:51","end":"15:37","startHours":13.854494029548839,"endHours":15.617120899402849,"quality":"inauspicious"},{"name":"Śubha","start":"15:37","end":"17:23","startHours":15.617120899402849,"endHours":17.379747769256863,"quality":"auspicious"},{"name":"Roga","start":"17:23","end":"19:09","startHours":17.379747769256863,"endHours":19.142374639110873,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:09","end":"20:23","startHours":19.142374639110873,"endHours":20.379747769256863,"quality":"inauspicious"},{"name":"Śubha","start":"20:23","end":"21:37","startHours":20.379747769256863,"endHours":21.61712089940285,"quality":"auspicious"},{"name":"Roga","start":"21:37","end":"22:51","startHours":21.61712089940285,"endHours":22.85449402954884,"quality":"inauspicious"},{"name":"Udveg","start":"22:51","end":"00:06","startHours":22.85449402954884,"endHours":24.09186715969483,"quality":"inauspicious"},{"name":"Chala","start":"00:06","end":"01:20","startHours":24.09186715969483,"endHours":25.329240289840815,"quality":"neutral"},{"name":"Labha","start":"01:20","end":"02:34","startHours":25.329240289840815,"endHours":26.566613419986805,"quality":"auspicious"},{"name":"Amṛta","start":"02:34","end":"03:48","startHours":26.566613419986805,"endHours":27.80398655013279,"quality":"auspicious"},{"name":"Kāla","start":"03:48","end":"05:02","startHours":27.80398655013279,"endHours":29.04135968027878,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:02","end":"06:02","startHours":5.041359680278782,"endHours":6.041359680278782,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:02","end":"07:02","startHours":6.041359680278782,"endHours":7.041359680278782,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:02","end":"08:02","startHours":7.041359680278782,"endHours":8.04135968027878,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:02","end":"09:02","startHours":8.04135968027878,"endHours":9.04135968027878,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:02","end":"10:02","startHours":9.04135968027878,"endHours":10.04135968027878,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:02","end":"11:02","startHours":10.04135968027878,"endHours":11.04135968027878,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:02","end":"12:02","startHours":11.04135968027878,"endHours":12.04135968027878,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:02","end":"13:02","startHours":12.04135968027878,"endHours":13.04135968027878,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:02","end":"14:02","startHours":13.04135968027878,"endHours":14.04135968027878,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:02","end":"15:02","startHours":14.04135968027878,"endHours":15.04135968027878,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:02","end":"16:02","startHours":15.04135968027878,"endHours":16.04135968027878,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:02","end":"17:02","startHours":16.04135968027878,"endHours":17.04135968027878,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:02","end":"18:02","startHours":17.04135968027878,"endHours":18.04135968027878,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:02","end":"19:02","startHours":18.04135968027878,"endHours":19.04135968027878,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:02","end":"20:02","startHours":19.04135968027878,"endHours":20.04135968027878,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:02","end":"21:02","startHours":20.04135968027878,"endHours":21.04135968027878,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:02","end":"22:02","startHours":21.04135968027878,"endHours":22.04135968027878,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:02","end":"23:02","startHours":22.04135968027878,"endHours":23.04135968027878,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:02","end":"00:02","startHours":23.04135968027878,"endHours":24.04135968027878,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:02","end":"01:02","startHours":24.04135968027878,"endHours":25.04135968027878,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:02","end":"02:02","startHours":25.04135968027878,"endHours":26.04135968027878,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:02","end":"03:02","startHours":26.04135968027878,"endHours":27.04135968027878,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:02","end":"04:02","startHours":27.04135968027878,"endHours":28.04135968027878,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:02","end":"05:02","startHours":28.04135968027878,"endHours":29.04135968027878,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.643160111093167,"eotMinutes":-10.349229581689698,"ayanamsa":24.0073}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"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 Trayodaśī · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 January 18, 2011 CE · Sydney, Australia · Vidhyamitra","description":"January 18, 2011 CE for Sydney, Australia: Śukla Trayodaśī, sūryodaya 05:02, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sydney/2011-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sydney/2011-01-18","sa":"https://sa.vidhyamitra.com/city/sydney/2011-01-18","hi":"https://hi.vidhyamitra.com/city/sydney/2011-01-18","x-default":"https://vidhyamitra.com/city/sydney/2011-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:37:07.281Z","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":"2026-06-02T04:37:07.281Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:37:07.281Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}