{"id":"vidhyamitra:city-day:perth:2019-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2019-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2019-01-13","date_display":"January 13, 2019 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":2019,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458496.770833,"kali_year":5120,"ahargana":1870031.2708,"sun":{"sidereal_longitude":268.2469,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":348.0575,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":79.8106,"elapsed_within_tithi_degrees":7.8106},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.0575,"elapsed_within_degrees":1.3909},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.3045},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"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":2019,"month":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458496.770833,"ahargana":1870031.2708,"kali_year":5120,"ayanamsa_lahiri":24.1189,"grahas":{"sun":{"sidereal_longitude":268.424302,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":344.200202,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":-4.2623},"mars":{"sidereal_longitude":343.663402,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":257.69410200000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":230.07780200000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":221.360902,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":258.57860200000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":96.7441,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":276.7441,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2019,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458496.770833,"kali_year":5120,"ahargana":1870031.2708,"sun":{"sidereal_longitude":268.2469,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":348.0575,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":79.8106,"elapsed_within_tithi_degrees":7.8106},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.0575,"elapsed_within_degrees":1.3909},"yoga":{"number":20,"name":"Śiva","sum_longitude":256.3045},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.262,"elongation":79.811},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.262,"opposition_distance":100.189}},"eclipse_window_40days":[{"offset_days":-7,"type":"solar","occurs":true,"moon_latitude":1.158,"elongation":1.13}]},"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":"05:24","sunsetLocal":"19:27","solarNoonLocal":"12:25","dayLengthHours":14.0468886875089,"dayLengthDisplay":"14 Hours 02 Mins 49 Secs","nightLengthDisplay":"9 Hours 57 Mins 11 Secs","moonriseLocal":"11:34","moonsetLocal":"23:23","rahuKala":{"name":"Rāhu Kāla","start":"17:41","end":"19:27","startHours":17.6874821160054,"endHours":19.44334320194401,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:25","end":"14:11","startHours":12.419898858189562,"endHours":14.175759944128174,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:56","end":"17:41","startHours":15.931621030066786,"endHours":17.6874821160054,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:09","startHours":8.674061874853855,"endHours":9.142291497770817,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.981741543081315,"endHours":6.356325241414885,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:53","startHours":11.951669235272597,"endHours":12.888128481106524,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:31","end":"04:28","startHours":3.5235360227672574,"endHours":4.459995268601184,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:14","end":"05:24","startHours":4.225880457142702,"endHours":5.396454514435111,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.761046972774377,"endHours":15.697506218608304,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24334320194401,"endHours":19.64334320194401,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44334320194401,"endHours":20.028630230590213,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19334320194401,"endHours":20.94334320194401,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:53","startHours":23.951669235272597,"endHours":24.888128481106527,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:24","end":"07:09","startHours":5.396454514435111,"endHours":7.152315600373724,"quality":"inauspicious"},{"name":"Chala","start":"07:09","end":"08:54","startHours":7.152315600373724,"endHours":8.908176686312336,"quality":"neutral"},{"name":"Labha","start":"08:54","end":"10:40","startHours":8.908176686312336,"endHours":10.66403777225095,"quality":"auspicious"},{"name":"Amṛta","start":"10:40","end":"12:25","startHours":10.66403777225095,"endHours":12.419898858189562,"quality":"auspicious"},{"name":"Kāla","start":"12:25","end":"14:11","startHours":12.419898858189562,"endHours":14.175759944128174,"quality":"inauspicious"},{"name":"Śubha","start":"14:11","end":"15:56","startHours":14.175759944128174,"endHours":15.931621030066786,"quality":"auspicious"},{"name":"Roga","start":"15:56","end":"17:41","startHours":15.931621030066786,"endHours":17.6874821160054,"quality":"inauspicious"},{"name":"Udveg","start":"17:41","end":"19:27","startHours":17.6874821160054,"endHours":19.44334320194401,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:27","end":"20:41","startHours":19.44334320194401,"endHours":20.6874821160054,"quality":"auspicious"},{"name":"Roga","start":"20:41","end":"21:56","startHours":20.6874821160054,"endHours":21.931621030066786,"quality":"inauspicious"},{"name":"Udveg","start":"21:56","end":"23:11","startHours":21.931621030066786,"endHours":23.175759944128174,"quality":"inauspicious"},{"name":"Chala","start":"23:11","end":"00:25","startHours":23.175759944128174,"endHours":24.419898858189562,"quality":"neutral"},{"name":"Labha","start":"00:25","end":"01:40","startHours":24.419898858189562,"endHours":25.66403777225095,"quality":"auspicious"},{"name":"Amṛta","start":"01:40","end":"02:54","startHours":25.66403777225095,"endHours":26.908176686312334,"quality":"auspicious"},{"name":"Kāla","start":"02:54","end":"04:09","startHours":26.908176686312334,"endHours":28.152315600373722,"quality":"inauspicious"},{"name":"Śubha","start":"04:09","end":"05:24","startHours":28.152315600373722,"endHours":29.39645451443511,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.396454514435111,"endHours":6.396454514435111,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.396454514435111,"endHours":7.396454514435111,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.396454514435111,"endHours":8.39645451443511,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.39645451443511,"endHours":9.39645451443511,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.39645451443511,"endHours":10.39645451443511,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.39645451443511,"endHours":11.39645451443511,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.39645451443511,"endHours":12.39645451443511,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.39645451443511,"endHours":13.39645451443511,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.39645451443511,"endHours":14.39645451443511,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.39645451443511,"endHours":15.39645451443511,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.39645451443511,"endHours":16.39645451443511,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.39645451443511,"endHours":17.39645451443511,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.39645451443511,"endHours":18.39645451443511,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.39645451443511,"endHours":19.39645451443511,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.39645451443511,"endHours":20.39645451443511,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.39645451443511,"endHours":21.39645451443511,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.39645451443511,"endHours":22.39645451443511,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.39645451443511,"endHours":23.39645451443511,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.39645451443511,"endHours":24.39645451443511,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.39645451443511,"endHours":25.39645451443511,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.39645451443511,"endHours":26.39645451443511,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.39645451443511,"endHours":27.39645451443511,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.39645451443511,"endHours":28.39645451443511,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.39645451443511,"endHours":29.39645451443511,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.55178527293887,"eotMinutes":-8.635931491373626,"ayanamsa":24.1189}},"calendars":{"vikram_samvat":2076,"vikram_samvatsara":"Paridhāvi","saka_samvat":1941,"saka_samvatsara":"Vikāri","bengali_samvat":1426,"malayalam_era":1195,"nanakshahi_year":550,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Saptamī · Vikram 2076 Paridhāvi · Śaka 1941 Vikāri"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"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 13, 2019 CE · Perth, Australia · Vidhyamitra","description":"January 13, 2019 CE for Perth, Australia: Śukla Saptamī, sūryodaya 05:24, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2019-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2019-01-13","sa":"https://sa.vidhyamitra.com/city/perth/2019-01-13","hi":"https://hi.vidhyamitra.com/city/perth/2019-01-13","x-default":"https://vidhyamitra.com/city/perth/2019-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T12:59:37.298Z","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":"2026-05-15T12:59:37.298Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T12:59:37.298Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}