{"id":"vidhyamitra:city-day:perth:1978-08-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1978-08-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-08-15","date_display":"August 15, 1978 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1978,"month":8,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443735.770833,"kali_year":5080,"ahargana":1855270.2708,"sun":{"sidereal_longitude":117.7567,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":252.7651,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":135.0085,"elapsed_within_tithi_degrees":3.0085},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":252.7651,"elapsed_within_degrees":12.7651},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.5218},"karana":{"half_tithi_index":22,"name":"Bava"},"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":1978,"month":8,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443735.770833,"ahargana":1855270.2708,"kali_year":5080,"ayanamsa_lahiri":23.5543,"grahas":{"sun":{"sidereal_longitude":118.31797999999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":250.65177999999992,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":4.4895},"mars":{"sidereal_longitude":163.35757999999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":125.52177999999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":91.85608000000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"venus":{"sidereal_longitude":164.07038,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":128.68248,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":158.8529,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":338.8529,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1978,"month":8,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443735.770833,"kali_year":5080,"ahargana":1855270.2708,"sun":{"sidereal_longitude":117.7567,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":252.7651,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":135.0085,"elapsed_within_tithi_degrees":3.0085},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":252.7651,"elapsed_within_degrees":12.7651},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.5218},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.489,"elongation":135.008},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.489,"opposition_distance":44.992}},"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":"06:53","sunsetLocal":"17:48","solarNoonLocal":"12:21","dayLengthHours":10.924523880507621,"dayLengthDisplay":"10 Hours 55 Mins 28 Secs","nightLengthDisplay":"13 Hours 04 Mins 32 Secs","moonriseLocal":"14:04","moonsetLocal":"04:16","rahuKala":{"name":"Rāhu Kāla","start":"15:05","end":"16:27","startHours":15.07670943223738,"endHours":16.442274917300832,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:37","end":"10:59","startHours":9.614447491983569,"endHours":10.980012977047021,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:21","end":"13:43","startHours":12.345578462110474,"endHours":13.711143947173927,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:48","startHours":9.432372093975108,"endHours":9.796522889992028,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:20","end":"07:38","startHours":7.338505016877813,"endHours":7.62982565369135,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:43","startHours":11.981427666093554,"endHours":12.709729258127394,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:26","end":"06:09","startHours":5.42671333778898,"endHours":6.155014929822821,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:58","end":"06:53","startHours":5.972939531814361,"endHours":6.8833165218566625,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:54","startHours":14.166332442195078,"endHours":14.894634034228918,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:36","end":"18:00","startHours":17.607840402364285,"endHours":18.007840402364284,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:48","end":"18:16","startHours":17.807840402364285,"endHours":18.263028897385436,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:33","end":"19:18","startHours":17.557840402364285,"endHours":19.307840402364285,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:43","startHours":23.981427666093552,"endHours":24.709729258127396,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:53","end":"08:15","startHours":6.8833165218566625,"endHours":8.248882006920116,"quality":"inauspicious"},{"name":"Udveg","start":"08:15","end":"09:37","startHours":8.248882006920116,"endHours":9.614447491983569,"quality":"inauspicious"},{"name":"Chala","start":"09:37","end":"10:59","startHours":9.614447491983569,"endHours":10.980012977047021,"quality":"neutral"},{"name":"Labha","start":"10:59","end":"12:21","startHours":10.980012977047021,"endHours":12.345578462110474,"quality":"auspicious"},{"name":"Amṛta","start":"12:21","end":"13:43","startHours":12.345578462110474,"endHours":13.711143947173927,"quality":"auspicious"},{"name":"Kāla","start":"13:43","end":"15:05","startHours":13.711143947173927,"endHours":15.07670943223738,"quality":"inauspicious"},{"name":"Śubha","start":"15:05","end":"16:27","startHours":15.07670943223738,"endHours":16.442274917300832,"quality":"auspicious"},{"name":"Roga","start":"16:27","end":"17:48","startHours":16.442274917300832,"endHours":17.807840402364285,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:48","end":"19:27","startHours":17.807840402364285,"endHours":19.442274917300832,"quality":"inauspicious"},{"name":"Śubha","start":"19:27","end":"21:05","startHours":19.442274917300832,"endHours":21.07670943223738,"quality":"auspicious"},{"name":"Roga","start":"21:05","end":"22:43","startHours":21.07670943223738,"endHours":22.711143947173927,"quality":"inauspicious"},{"name":"Udveg","start":"22:43","end":"00:21","startHours":22.711143947173927,"endHours":24.345578462110474,"quality":"inauspicious"},{"name":"Chala","start":"00:21","end":"01:59","startHours":24.345578462110474,"endHours":25.98001297704702,"quality":"neutral"},{"name":"Labha","start":"01:59","end":"03:37","startHours":25.98001297704702,"endHours":27.61444749198357,"quality":"auspicious"},{"name":"Amṛta","start":"03:37","end":"05:15","startHours":27.61444749198357,"endHours":29.248882006920116,"quality":"auspicious"},{"name":"Kāla","start":"05:15","end":"06:53","startHours":29.248882006920116,"endHours":30.883316521856663,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:53","end":"07:53","startHours":6.8833165218566625,"endHours":7.8833165218566625,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:53","end":"08:53","startHours":7.8833165218566625,"endHours":8.883316521856663,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:53","end":"09:53","startHours":8.883316521856663,"endHours":9.883316521856663,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:53","end":"10:53","startHours":9.883316521856663,"endHours":10.883316521856663,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:53","end":"11:53","startHours":10.883316521856663,"endHours":11.883316521856663,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:53","end":"12:53","startHours":11.883316521856663,"endHours":12.883316521856663,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:53","end":"13:53","startHours":12.883316521856663,"endHours":13.883316521856663,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:53","end":"14:53","startHours":13.883316521856663,"endHours":14.883316521856663,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:53","end":"15:53","startHours":14.883316521856663,"endHours":15.883316521856663,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:53","end":"16:53","startHours":15.883316521856663,"endHours":16.883316521856663,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:53","end":"17:53","startHours":16.883316521856663,"endHours":17.883316521856663,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:53","end":"18:53","startHours":17.883316521856663,"endHours":18.883316521856663,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:53","end":"19:53","startHours":18.883316521856663,"endHours":19.883316521856663,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:53","end":"20:53","startHours":19.883316521856663,"endHours":20.883316521856663,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:53","end":"21:53","startHours":20.883316521856663,"endHours":21.883316521856663,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:53","end":"22:53","startHours":21.883316521856663,"endHours":22.883316521856663,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:53","end":"23:53","startHours":22.883316521856663,"endHours":23.883316521856663,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:53","end":"00:53","startHours":23.883316521856663,"endHours":24.883316521856663,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:53","end":"01:53","startHours":24.883316521856663,"endHours":25.883316521856663,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:53","end":"02:53","startHours":25.883316521856663,"endHours":26.883316521856663,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:53","end":"03:53","startHours":26.883316521856663,"endHours":27.883316521856663,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:53","end":"04:53","startHours":27.883316521856663,"endHours":28.883316521856663,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:53","end":"05:53","startHours":28.883316521856663,"endHours":29.883316521856663,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:53","end":"06:53","startHours":29.883316521856663,"endHours":30.883316521856663,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.215320167211418,"eotMinutes":-4.176707726628523,"ayanamsa":23.5543}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Dvādaśī · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[],"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 August 15, 1978 CE · Perth, Australia · Vidhyamitra","description":"August 15, 1978 CE for Perth, Australia: Śukla Dvādaśī, sūryodaya 06:53, sūryāsta 17:48.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1978-08-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1978-08-15","sa":"https://sa.vidhyamitra.com/city/perth/1978-08-15","hi":"https://hi.vidhyamitra.com/city/perth/1978-08-15","x-default":"https://vidhyamitra.com/city/perth/1978-08-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-05T04:08:25.488Z","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":"2026-09-05T04:08:25.488Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-05T04:08:25.488Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}