{"id":"vidhyamitra:city-day:perth:2012-01-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2012-01-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-01-17","date_display":"January 17, 2012 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":2012,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455943.770833,"kali_year":5113,"ahargana":1867478.2708,"sun":{"sidereal_longitude":272.1609,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":191.2677,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":279.1068,"elapsed_within_tithi_degrees":3.1068},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.2677,"elapsed_within_degrees":4.6011},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":103.4287},"karana":{"half_tithi_index":46,"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":2012,"month":1,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455943.770833,"ahargana":1867478.2708,"kali_year":5113,"ayanamsa_lahiri":24.0212,"grahas":{"sun":{"sidereal_longitude":272.289945,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":190.94914500000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false,"latitude":-2.9355},"mars":{"sidereal_longitude":148.565245,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":258.9007449999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":7.01604500000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":309.21484499999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":184.81644499999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":232.0143,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":52.0143,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2012,"month":1,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455943.770833,"kali_year":5113,"ahargana":1867478.2708,"sun":{"sidereal_longitude":272.1609,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":191.2677,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":279.1068,"elapsed_within_tithi_degrees":3.1068},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.2677,"elapsed_within_degrees":4.6011},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":103.4287},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.935,"elongation":80.893},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.935,"opposition_distance":99.107}},"eclipse_window_40days":[]},"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":"05:27","sunsetLocal":"19:26","solarNoonLocal":"12:27","dayLengthHours":13.980351097317488,"dayLengthDisplay":"13 Hours 58 Mins 49 Secs","nightLengthDisplay":"10 Hours 01 Mins 11 Secs","moonriseLocal":"00:25","moonsetLocal":"13:38","rahuKala":{"name":"Rāhu Kāla","start":"15:56","end":"17:41","startHours":15.938155920097852,"endHours":17.685699807262537,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:57","end":"10:42","startHours":8.947980371439108,"endHours":10.695524258603793,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:27","end":"14:11","startHours":12.443068145768478,"endHours":14.190612032933164,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:43","end":"09:11","startHours":8.714974519817149,"endHours":9.180986223061065,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:02","end":"06:24","startHours":6.03540722616463,"endHours":6.408216588759763,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:55","startHours":11.977056442524562,"endHours":12.909079849012395,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:35","end":"04:31","startHours":3.58884578413407,"endHours":4.5208691906219025,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:17","end":"05:27","startHours":4.287863338999944,"endHours":5.452892597109735,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.773126661988062,"endHours":15.705150068475895,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.233243694427223,"endHours":19.63324369442722,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:01","startHours":19.433243694427222,"endHours":20.015758323482117,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.183243694427222,"endHours":20.933243694427222,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:55","startHours":23.977056442524564,"endHours":24.909079849012393,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:27","end":"07:12","startHours":5.452892597109735,"endHours":7.200436484274421,"quality":"inauspicious"},{"name":"Udveg","start":"07:12","end":"08:57","startHours":7.200436484274421,"endHours":8.947980371439108,"quality":"inauspicious"},{"name":"Chala","start":"08:57","end":"10:42","startHours":8.947980371439108,"endHours":10.695524258603793,"quality":"neutral"},{"name":"Labha","start":"10:42","end":"12:27","startHours":10.695524258603793,"endHours":12.443068145768478,"quality":"auspicious"},{"name":"Amṛta","start":"12:27","end":"14:11","startHours":12.443068145768478,"endHours":14.190612032933164,"quality":"auspicious"},{"name":"Kāla","start":"14:11","end":"15:56","startHours":14.190612032933164,"endHours":15.938155920097852,"quality":"inauspicious"},{"name":"Śubha","start":"15:56","end":"17:41","startHours":15.938155920097852,"endHours":17.685699807262537,"quality":"auspicious"},{"name":"Roga","start":"17:41","end":"19:26","startHours":17.685699807262537,"endHours":19.433243694427222,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:26","end":"20:41","startHours":19.433243694427222,"endHours":20.685699807262537,"quality":"inauspicious"},{"name":"Śubha","start":"20:41","end":"21:56","startHours":20.685699807262537,"endHours":21.93815592009785,"quality":"auspicious"},{"name":"Roga","start":"21:56","end":"23:11","startHours":21.93815592009785,"endHours":23.190612032933164,"quality":"inauspicious"},{"name":"Udveg","start":"23:11","end":"00:27","startHours":23.190612032933164,"endHours":24.44306814576848,"quality":"inauspicious"},{"name":"Chala","start":"00:27","end":"01:42","startHours":24.44306814576848,"endHours":25.695524258603793,"quality":"neutral"},{"name":"Labha","start":"01:42","end":"02:57","startHours":25.695524258603793,"endHours":26.947980371439108,"quality":"auspicious"},{"name":"Amṛta","start":"02:57","end":"04:12","startHours":26.947980371439108,"endHours":28.20043648427442,"quality":"auspicious"},{"name":"Kāla","start":"04:12","end":"05:27","startHours":28.20043648427442,"endHours":29.452892597109734,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:27","end":"06:27","startHours":5.452892597109735,"endHours":6.452892597109735,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:27","end":"07:27","startHours":6.452892597109735,"endHours":7.452892597109735,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:27","end":"08:27","startHours":7.452892597109735,"endHours":8.452892597109734,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:27","end":"09:27","startHours":8.452892597109734,"endHours":9.452892597109734,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:27","end":"10:27","startHours":9.452892597109734,"endHours":10.452892597109734,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:27","end":"11:27","startHours":10.452892597109734,"endHours":11.452892597109734,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:27","end":"12:27","startHours":11.452892597109734,"endHours":12.452892597109734,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:27","end":"13:27","startHours":12.452892597109734,"endHours":13.452892597109734,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:27","end":"14:27","startHours":13.452892597109734,"endHours":14.452892597109734,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:27","end":"15:27","startHours":14.452892597109734,"endHours":15.452892597109734,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:27","end":"16:27","startHours":15.452892597109734,"endHours":16.452892597109734,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:27","end":"17:27","startHours":16.452892597109734,"endHours":17.452892597109734,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:27","end":"18:27","startHours":17.452892597109734,"endHours":18.452892597109734,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:27","end":"19:27","startHours":18.452892597109734,"endHours":19.452892597109734,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:27","end":"20:27","startHours":19.452892597109734,"endHours":20.452892597109734,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:27","end":"21:27","startHours":20.452892597109734,"endHours":21.452892597109734,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:27","end":"22:27","startHours":21.452892597109734,"endHours":22.452892597109734,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:27","end":"23:27","startHours":22.452892597109734,"endHours":23.452892597109734,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:27","end":"00:27","startHours":23.452892597109734,"endHours":24.452892597109734,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:27","end":"01:27","startHours":24.452892597109734,"endHours":25.452892597109734,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:27","end":"02:27","startHours":25.452892597109734,"endHours":26.452892597109734,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:27","end":"03:27","startHours":26.452892597109734,"endHours":27.452892597109734,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:27","end":"04:27","startHours":27.452892597109734,"endHours":28.452892597109734,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:27","end":"05:27","startHours":28.452892597109734,"endHours":29.452892597109734,"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-20.887088507339147,"eotMinutes":-10.026088746108654,"ayanamsa":24.0212}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Navamī · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"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":"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":"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 17, 2012 CE · Perth, Australia · Vidhyamitra","description":"January 17, 2012 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 05:27, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2012-01-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2012-01-17","sa":"https://sa.vidhyamitra.com/city/perth/2012-01-17","hi":"https://hi.vidhyamitra.com/city/perth/2012-01-17","x-default":"https://vidhyamitra.com/city/perth/2012-01-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T15:42:30.281Z","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":"2026-05-16T15:42:30.281Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T15:42:30.281Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}