{"id":"vidhyamitra:city-day:perth:2018-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2018-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-01-30","date_display":"January 30, 2018 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":2018,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458148.770833,"kali_year":5119,"ahargana":1869683.2708,"sun":{"sidereal_longitude":285.9419,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":86.1736,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":160.2317,"elapsed_within_tithi_degrees":4.2317},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":86.1736,"elapsed_within_degrees":6.1736},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":12.1155},"karana":{"half_tithi_index":26,"name":"Gara"},"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":2018,"month":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458148.770833,"ahargana":1869683.2708,"kali_year":5119,"ayanamsa_lahiri":24.1056,"grahas":{"sun":{"sidereal_longitude":285.981998,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":84.62199799999996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false,"latitude":-2.1806},"mars":{"sidereal_longitude":217.74889800000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":273.287998,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":206.71689800000001,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":290.70039799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":250.381798,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":115.1828,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":295.1828,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"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":2018,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458148.770833,"kali_year":5119,"ahargana":1869683.2708,"sun":{"sidereal_longitude":285.9419,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":86.1736,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":160.2317,"elapsed_within_tithi_degrees":4.2317},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":86.1736,"elapsed_within_degrees":6.1736},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":12.1155},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.181,"elongation":160.232},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.181,"opposition_distance":19.768}},"eclipse_window_40days":[{"offset_days":17,"type":"solar","occurs":true,"moon_latitude":-0.855,"elongation":1.98}]},"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":"05:40","sunsetLocal":"19:20","solarNoonLocal":"12:30","dayLengthHours":13.672693671490556,"dayLengthDisplay":"13 Hours 40 Mins 22 Secs","nightLengthDisplay":"10 Hours 19 Mins 38 Secs","moonriseLocal":"18:00","moonsetLocal":"04:09","rahuKala":{"name":"Rāhu Kāla","start":"15:55","end":"17:38","startHours":15.916759184135383,"endHours":17.625845893071702,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:05","end":"10:47","startHours":9.080412348390105,"endHours":10.789499057326424,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:30","end":"14:12","startHours":12.498585766262742,"endHours":14.207672475199061,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:18","startHours":8.852534120531928,"endHours":9.30829057624828,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:14","end":"06:36","startHours":6.231934500162905,"endHours":6.596539664735986,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:57","startHours":12.04282931054639,"endHours":12.954342221979095,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:50","end":"04:45","startHours":3.839213107652058,"endHours":4.7507260190847616,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:31","end":"05:40","startHours":4.522847791226585,"endHours":5.662238930517465,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:41","startHours":14.777368044844504,"endHours":15.688880956277208,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.13493260200802,"endHours":19.53493260200802,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:54","startHours":19.33493260200802,"endHours":19.90462817165346,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.08493260200802,"endHours":20.83493260200802,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:57","startHours":24.04282931054639,"endHours":24.954342221979093,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:40","end":"07:22","startHours":5.662238930517465,"endHours":7.371325639453785,"quality":"inauspicious"},{"name":"Udveg","start":"07:22","end":"09:05","startHours":7.371325639453785,"endHours":9.080412348390105,"quality":"inauspicious"},{"name":"Chala","start":"09:05","end":"10:47","startHours":9.080412348390105,"endHours":10.789499057326424,"quality":"neutral"},{"name":"Labha","start":"10:47","end":"12:30","startHours":10.789499057326424,"endHours":12.498585766262742,"quality":"auspicious"},{"name":"Amṛta","start":"12:30","end":"14:12","startHours":12.498585766262742,"endHours":14.207672475199061,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:55","startHours":14.207672475199061,"endHours":15.916759184135383,"quality":"inauspicious"},{"name":"Śubha","start":"15:55","end":"17:38","startHours":15.916759184135383,"endHours":17.625845893071702,"quality":"auspicious"},{"name":"Roga","start":"17:38","end":"19:20","startHours":17.625845893071702,"endHours":19.33493260200802,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:20","end":"20:38","startHours":19.33493260200802,"endHours":20.625845893071702,"quality":"inauspicious"},{"name":"Śubha","start":"20:38","end":"21:55","startHours":20.625845893071702,"endHours":21.91675918413538,"quality":"auspicious"},{"name":"Roga","start":"21:55","end":"23:12","startHours":21.91675918413538,"endHours":23.20767247519906,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:30","startHours":23.20767247519906,"endHours":24.498585766262742,"quality":"inauspicious"},{"name":"Chala","start":"00:30","end":"01:47","startHours":24.498585766262742,"endHours":25.789499057326424,"quality":"neutral"},{"name":"Labha","start":"01:47","end":"03:05","startHours":25.789499057326424,"endHours":27.080412348390105,"quality":"auspicious"},{"name":"Amṛta","start":"03:05","end":"04:22","startHours":27.080412348390105,"endHours":28.371325639453783,"quality":"auspicious"},{"name":"Kāla","start":"04:22","end":"05:40","startHours":28.371325639453783,"endHours":29.662238930517464,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:40","end":"06:40","startHours":5.662238930517465,"endHours":6.662238930517465,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:40","end":"07:40","startHours":6.662238930517465,"endHours":7.662238930517465,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:40","end":"08:40","startHours":7.662238930517465,"endHours":8.662238930517464,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:40","end":"09:40","startHours":8.662238930517464,"endHours":9.662238930517464,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:40","end":"10:40","startHours":9.662238930517464,"endHours":10.662238930517464,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:40","end":"11:40","startHours":10.662238930517464,"endHours":11.662238930517464,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:40","end":"12:40","startHours":11.662238930517464,"endHours":12.662238930517464,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:40","end":"13:40","startHours":12.662238930517464,"endHours":13.662238930517464,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:40","end":"14:40","startHours":13.662238930517464,"endHours":14.662238930517464,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:40","end":"15:40","startHours":14.662238930517464,"endHours":15.662238930517464,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:40","end":"16:40","startHours":15.662238930517464,"endHours":16.662238930517464,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:40","end":"17:40","startHours":16.662238930517464,"endHours":17.662238930517464,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:40","end":"18:40","startHours":17.662238930517464,"endHours":18.662238930517464,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:40","end":"19:40","startHours":18.662238930517464,"endHours":19.662238930517464,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:40","end":"20:40","startHours":19.662238930517464,"endHours":20.662238930517464,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:40","end":"21:40","startHours":20.662238930517464,"endHours":21.662238930517464,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:40","end":"22:40","startHours":21.662238930517464,"endHours":22.662238930517464,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:40","end":"23:40","startHours":22.662238930517464,"endHours":23.662238930517464,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:40","end":"00:40","startHours":23.662238930517464,"endHours":24.662238930517464,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:40","end":"01:40","startHours":24.662238930517464,"endHours":25.662238930517464,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:40","end":"02:40","startHours":25.662238930517464,"endHours":26.662238930517464,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:40","end":"03:40","startHours":26.662238930517464,"endHours":27.662238930517464,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:40","end":"04:40","startHours":27.662238930517464,"endHours":28.662238930517464,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:40","end":"05:40","startHours":28.662238930517464,"endHours":29.662238930517464,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"Lumba","quality":"Auspicious"},"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":-17.715424711533284,"eotMinutes":-13.357145975764517,"ayanamsa":24.1056}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturdaśī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"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":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"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 30, 2018 CE · Perth, Australia · Vidhyamitra","description":"January 30, 2018 CE for Perth, Australia: Śukla Caturdaśī, sūryodaya 05:40, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2018-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2018-01-30","sa":"https://sa.vidhyamitra.com/city/perth/2018-01-30","hi":"https://hi.vidhyamitra.com/city/perth/2018-01-30","x-default":"https://vidhyamitra.com/city/perth/2018-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T06:54:39.273Z","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":"2026-05-15T06:54:39.273Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T06:54:39.273Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}