{"id":"vidhyamitra:city-day:perth:1983-04-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1983-04-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-04-30","date_display":"April 30, 1983 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":1983,"month":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445454.770833,"kali_year":5085,"ahargana":1856989.2708,"sun":{"sidereal_longitude":15.635,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":230.8098,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":215.1748,"elapsed_within_tithi_degrees":11.1748},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.8098,"elapsed_within_degrees":4.1432},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.4448},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1983,"month":4,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445454.770833,"ahargana":1856989.2708,"kali_year":5085,"ayanamsa_lahiri":23.6201,"grahas":{"sun":{"sidereal_longitude":15.529001999999991,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":228.89010199999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":1.3116},"mars":{"sidereal_longitude":24.54930200000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":32.26530200000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":226.428002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":55.92850199999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":186.58930199999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":67.772,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":247.772,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","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":1983,"month":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445454.770833,"kali_year":5085,"ahargana":1856989.2708,"sun":{"sidereal_longitude":15.635,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":230.8098,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":215.1748,"elapsed_within_tithi_degrees":11.1748},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.8098,"elapsed_within_degrees":4.1432},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.4448},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.312,"elongation":144.825},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.312,"opposition_distance":35.175}},"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":"06:47","sunsetLocal":"17:41","solarNoonLocal":"12:14","dayLengthHours":10.895396158279134,"dayLengthDisplay":"10 Hours 53 Mins 43 Secs","nightLengthDisplay":"13 Hours 06 Mins 17 Secs","moonriseLocal":"19:25","moonsetLocal":"09:30","rahuKala":{"name":"Rāhu Kāla","start":"09:30","end":"10:52","startHours":9.505693273943512,"endHours":10.867617793728403,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:35","end":"14:57","startHours":13.591466833298188,"endHours":14.953391353083079,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:47","end":"08:09","startHours":6.781844234373729,"endHours":8.143768754158621,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:19","end":"09:41","startHours":9.324103337972193,"endHours":9.687283209914831,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:14","end":"07:32","startHours":7.235819074302026,"endHours":7.526362971856137,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:36","startHours":11.866362441570658,"endHours":12.592722185455933,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:20","end":"06:03","startHours":5.329124746603178,"endHours":6.055484490488453,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:52","end":"06:47","startHours":5.873894554517134,"endHours":6.781844234373729,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:03","end":"14:46","startHours":14.045441673226485,"endHours":14.77180141711176,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.477240392652863,"endHours":17.877240392652862,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:08","startHours":17.677240392652863,"endHours":18.13121523258116,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.427240392652863,"endHours":19.177240392652863,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:36","startHours":23.866362441570658,"endHours":24.592722185455933,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:47","end":"08:09","startHours":6.781844234373729,"endHours":8.143768754158621,"quality":"inauspicious"},{"name":"Śubha","start":"08:09","end":"09:30","startHours":8.143768754158621,"endHours":9.505693273943512,"quality":"auspicious"},{"name":"Roga","start":"09:30","end":"10:52","startHours":9.505693273943512,"endHours":10.867617793728403,"quality":"inauspicious"},{"name":"Udveg","start":"10:52","end":"12:14","startHours":10.867617793728403,"endHours":12.229542313513296,"quality":"inauspicious"},{"name":"Chala","start":"12:14","end":"13:35","startHours":12.229542313513296,"endHours":13.591466833298188,"quality":"neutral"},{"name":"Labha","start":"13:35","end":"14:57","startHours":13.591466833298188,"endHours":14.953391353083079,"quality":"auspicious"},{"name":"Amṛta","start":"14:57","end":"16:19","startHours":14.953391353083079,"endHours":16.31531587286797,"quality":"auspicious"},{"name":"Kāla","start":"16:19","end":"17:41","startHours":16.31531587286797,"endHours":17.677240392652863,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:41","end":"19:19","startHours":17.677240392652863,"endHours":19.31531587286797,"quality":"auspicious"},{"name":"Amṛta","start":"19:19","end":"20:57","startHours":19.31531587286797,"endHours":20.953391353083077,"quality":"auspicious"},{"name":"Kāla","start":"20:57","end":"22:35","startHours":20.953391353083077,"endHours":22.59146683329819,"quality":"inauspicious"},{"name":"Śubha","start":"22:35","end":"00:14","startHours":22.59146683329819,"endHours":24.229542313513296,"quality":"auspicious"},{"name":"Roga","start":"00:14","end":"01:52","startHours":24.229542313513296,"endHours":25.867617793728403,"quality":"inauspicious"},{"name":"Udveg","start":"01:52","end":"03:30","startHours":25.867617793728403,"endHours":27.505693273943514,"quality":"inauspicious"},{"name":"Chala","start":"03:30","end":"05:09","startHours":27.505693273943514,"endHours":29.14376875415862,"quality":"neutral"},{"name":"Labha","start":"05:09","end":"06:47","startHours":29.14376875415862,"endHours":30.78184423437373,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:47","end":"07:47","startHours":6.781844234373729,"endHours":7.781844234373729,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:47","end":"08:47","startHours":7.781844234373729,"endHours":8.781844234373729,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:47","end":"09:47","startHours":8.781844234373729,"endHours":9.781844234373729,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:47","end":"10:47","startHours":9.781844234373729,"endHours":10.781844234373729,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:47","end":"11:47","startHours":10.781844234373729,"endHours":11.781844234373729,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:47","end":"12:47","startHours":11.781844234373729,"endHours":12.781844234373729,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:47","end":"13:47","startHours":12.781844234373729,"endHours":13.781844234373729,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:47","end":"14:47","startHours":13.781844234373729,"endHours":14.781844234373729,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:47","end":"15:47","startHours":14.781844234373729,"endHours":15.781844234373729,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:47","end":"16:47","startHours":15.781844234373729,"endHours":16.78184423437373,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:47","end":"17:47","startHours":16.78184423437373,"endHours":17.78184423437373,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:47","end":"18:47","startHours":17.78184423437373,"endHours":18.78184423437373,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:47","end":"19:47","startHours":18.78184423437373,"endHours":19.78184423437373,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:47","end":"20:47","startHours":19.78184423437373,"endHours":20.78184423437373,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:47","end":"21:47","startHours":20.78184423437373,"endHours":21.78184423437373,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:47","end":"22:47","startHours":21.78184423437373,"endHours":22.78184423437373,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:47","end":"23:47","startHours":22.78184423437373,"endHours":23.78184423437373,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:47","end":"00:47","startHours":23.78184423437373,"endHours":24.78184423437373,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:47","end":"01:47","startHours":24.78184423437373,"endHours":25.78184423437373,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:47","end":"02:47","startHours":25.78184423437373,"endHours":26.78184423437373,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:47","end":"03:47","startHours":26.78184423437373,"endHours":27.78184423437373,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:47","end":"04:47","startHours":27.78184423437373,"endHours":28.78184423437373,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:47","end":"05:47","startHours":28.78184423437373,"endHours":29.78184423437373,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:47","end":"06:47","startHours":29.78184423437373,"endHours":30.78184423437373,"planetary_lord":"Mercury"}],"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":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.542890307604157,"eotMinutes":2.785461189202204,"ayanamsa":23.6201}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Tṛtīyā · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","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 April 30, 1983 CE · Perth, Australia · Vidhyamitra","description":"April 30, 1983 CE for Perth, Australia: Kṛṣṇa Tṛtīyā, sūryodaya 06:47, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1983-04-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1983-04-30","sa":"https://sa.vidhyamitra.com/city/perth/1983-04-30","hi":"https://hi.vidhyamitra.com/city/perth/1983-04-30","x-default":"https://vidhyamitra.com/city/perth/1983-04-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:38:27.870Z","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":"2026-06-02T04:38:27.870Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:38:27.870Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}