{"id":"vidhyamitra:city-day:perth:2159-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2159-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2159-01-21","date_display":"January 21, 2159 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":2159,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509638.770833,"kali_year":5260,"ahargana":1921173.2708,"sun":{"sidereal_longitude":274.1755,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":291.4015,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.226,"elapsed_within_tithi_degrees":5.226},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":291.4015,"elapsed_within_degrees":11.4015},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.577},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2159,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2509638.770833,"ahargana":1921173.2708,"kali_year":5260,"ayanamsa_lahiri":26.0749,"grahas":{"sun":{"sidereal_longitude":274.6324010000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":290.87570099999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false,"latitude":1.8579},"mars":{"sidereal_longitude":200.65070100000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":289.09210099999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":166.33810100000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":303.74570100000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":180.70750099999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":266.9948,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":86.9948,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":2159,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2509638.770833,"kali_year":5260,"ahargana":1921173.2708,"sun":{"sidereal_longitude":274.1755,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":291.4015,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.226,"elapsed_within_tithi_degrees":5.226},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":291.4015,"elapsed_within_degrees":11.4015},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.577},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.858,"elongation":17.226},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.858,"opposition_distance":162.774}},"eclipse_window_40days":[{"offset_days":-17,"type":"lunar","occurs":true,"moon_latitude":1.097,"opposition_distance":2.942}]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"05:31","sunsetLocal":"19:25","solarNoonLocal":"12:28","dayLengthHours":13.892397172981122,"dayLengthDisplay":"13 Hours 53 Mins 33 Secs","nightLengthDisplay":"10 Hours 06 Mins 27 Secs","moonriseLocal":"06:49","moonsetLocal":"20:16","rahuKala":{"name":"Rāhu Kāla","start":"17:40","end":"19:25","startHours":17.673211127353454,"endHours":19.409760773976096,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:28","end":"14:12","startHours":12.463562187485536,"endHours":14.200111834108176,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:56","end":"17:40","startHours":15.936661480730816,"endHours":17.673211127353454,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:46","end":"09:13","startHours":8.758922941357236,"endHours":9.222002847123274,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:06","end":"06:28","startHours":6.096213483202521,"endHours":6.466677407815351,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:00","end":"12:56","startHours":12.0004822817195,"endHours":12.926642093251573,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:40","end":"04:35","startHours":3.6650439779308246,"endHours":4.5912037894629,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:22","end":"05:31","startHours":4.35966383657988,"endHours":5.517363600994974,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.778961716315722,"endHours":15.705121527847798,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.209760773976097,"endHours":19.609760773976095,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"19:59","startHours":19.409760773976096,"endHours":19.988610656183642,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.159760773976096,"endHours":20.909760773976096,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:00","end":"00:56","startHours":24.0004822817195,"endHours":24.926642093251573,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:31","end":"07:15","startHours":5.517363600994974,"endHours":7.253913247617614,"quality":"inauspicious"},{"name":"Chala","start":"07:15","end":"08:59","startHours":7.253913247617614,"endHours":8.990462894240254,"quality":"neutral"},{"name":"Labha","start":"08:59","end":"10:44","startHours":8.990462894240254,"endHours":10.727012540862894,"quality":"auspicious"},{"name":"Amṛta","start":"10:44","end":"12:28","startHours":10.727012540862894,"endHours":12.463562187485536,"quality":"auspicious"},{"name":"Kāla","start":"12:28","end":"14:12","startHours":12.463562187485536,"endHours":14.200111834108176,"quality":"inauspicious"},{"name":"Śubha","start":"14:12","end":"15:56","startHours":14.200111834108176,"endHours":15.936661480730816,"quality":"auspicious"},{"name":"Roga","start":"15:56","end":"17:40","startHours":15.936661480730816,"endHours":17.673211127353454,"quality":"inauspicious"},{"name":"Udveg","start":"17:40","end":"19:25","startHours":17.673211127353454,"endHours":19.409760773976096,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:25","end":"20:40","startHours":19.409760773976096,"endHours":20.673211127353454,"quality":"auspicious"},{"name":"Roga","start":"20:40","end":"21:56","startHours":20.673211127353454,"endHours":21.936661480730816,"quality":"inauspicious"},{"name":"Udveg","start":"21:56","end":"23:12","startHours":21.936661480730816,"endHours":23.200111834108174,"quality":"inauspicious"},{"name":"Chala","start":"23:12","end":"00:28","startHours":23.200111834108174,"endHours":24.463562187485536,"quality":"neutral"},{"name":"Labha","start":"00:28","end":"01:44","startHours":24.463562187485536,"endHours":25.727012540862894,"quality":"auspicious"},{"name":"Amṛta","start":"01:44","end":"02:59","startHours":25.727012540862894,"endHours":26.990462894240252,"quality":"auspicious"},{"name":"Kāla","start":"02:59","end":"04:15","startHours":26.990462894240252,"endHours":28.253913247617614,"quality":"inauspicious"},{"name":"Śubha","start":"04:15","end":"05:31","startHours":28.253913247617614,"endHours":29.517363600994976,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.517363600994974,"endHours":6.517363600994974,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.517363600994974,"endHours":7.517363600994974,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.517363600994974,"endHours":8.517363600994974,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.517363600994974,"endHours":9.517363600994974,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.517363600994974,"endHours":10.517363600994974,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.517363600994974,"endHours":11.517363600994974,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.517363600994974,"endHours":12.517363600994974,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.517363600994974,"endHours":13.517363600994974,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.517363600994974,"endHours":14.517363600994974,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.517363600994974,"endHours":15.517363600994974,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.517363600994974,"endHours":16.517363600994976,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.517363600994976,"endHours":17.517363600994976,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.517363600994976,"endHours":18.517363600994976,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.517363600994976,"endHours":19.517363600994976,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.517363600994976,"endHours":20.517363600994976,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.517363600994976,"endHours":21.517363600994976,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.517363600994976,"endHours":22.517363600994976,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.517363600994976,"endHours":23.517363600994976,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.517363600994976,"endHours":24.517363600994976,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.517363600994976,"endHours":25.517363600994976,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.517363600994976,"endHours":26.517363600994976,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.517363600994976,"endHours":27.517363600994976,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.517363600994976,"endHours":28.517363600994976,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.517363600994976,"endHours":29.517363600994976,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-19.996654999214986,"eotMinutes":-11.255731249132124,"ayanamsa":26.0749}},"calendars":{"vikram_samvat":2216,"vikram_samvatsara":"Aṅgirasa","saka_samvat":2081,"saka_samvatsara":"Siddhārthī","bengali_samvat":1566,"malayalam_era":1335,"nanakshahi_year":690,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Dvitīyā · Vikram 2216 Aṅgirasa · Śaka 2081 Siddhārthī"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 21, 2159 CE · Perth, Australia · Vidhyamitra","description":"January 21, 2159 CE for Perth, Australia: Śukla Dvitīyā, sūryodaya 05:31, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2159-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2159-01-21","sa":"https://sa.vidhyamitra.com/city/perth/2159-01-21","hi":"https://hi.vidhyamitra.com/city/perth/2159-01-21","x-default":"https://vidhyamitra.com/city/perth/2159-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-27T20:58:31.568Z","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":"2026-05-27T20:58:31.568Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-27T20:58:31.568Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}