{"id":"vidhyamitra:city-day:perth:2012-08-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2012-08-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-08-20","date_display":"August 20, 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":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456159.770833,"kali_year":5114,"ahargana":1867694.2708,"sun":{"sidereal_longitude":122.7341,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.0523,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":29.3182,"elapsed_within_tithi_degrees":5.3182},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.0523,"elapsed_within_degrees":5.3856},"yoga":{"number":21,"name":"Siddha","sum_longitude":274.7864},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":8,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456159.770833,"ahargana":1867694.2708,"kali_year":5114,"ayanamsa_lahiri":24.0295,"grahas":{"sun":{"sidereal_longitude":123.40279199999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":153.74249199999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false,"latitude":-4.1868},"mars":{"sidereal_longitude":183.51359200000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":105.17679199999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":48.83959199999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":77.49429199999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":180.89479200000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":220.5696,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":40.5696,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2012,"month":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456159.770833,"kali_year":5114,"ahargana":1867694.2708,"sun":{"sidereal_longitude":122.7341,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.0523,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":29.3182,"elapsed_within_tithi_degrees":5.3182},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.0523,"elapsed_within_degrees":5.3856},"yoga":{"number":21,"name":"Siddha","sum_longitude":274.7864},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.187,"elongation":29.318},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.187,"opposition_distance":150.682}},"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":"17:52","solarNoonLocal":"12:20","dayLengthHours":11.087552908484184,"dayLengthDisplay":"11 Hours 05 Mins 15 Secs","nightLengthDisplay":"12 Hours 54 Mins 45 Secs","moonriseLocal":"08:20","moonsetLocal":"20:22","rahuKala":{"name":"Rāhu Kāla","start":"08:10","end":"09:33","startHours":8.168967841160601,"endHours":9.554911954721124,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:56","end":"12:20","startHours":10.940856068281647,"endHours":12.32680018184217,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:43","end":"15:06","startHours":13.712744295402693,"endHours":15.098688408963216,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:22","end":"09:44","startHours":9.370119406246388,"endHours":9.739704503195862,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:15","end":"07:32","startHours":7.24500509878692,"endHours":7.540673176346498,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:42","startHours":11.957215084892697,"endHours":12.696385278791643,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:18","end":"06:03","startHours":5.304683339802187,"endHours":6.043853533701133,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:52","end":"06:47","startHours":5.859060985226397,"endHours":6.783023727600079,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:55","startHours":14.174725666589534,"endHours":14.91389586048848,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:40","end":"18:04","startHours":17.670576636084263,"endHours":18.07057663608426,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:52","end":"18:20","startHours":17.870576636084262,"endHours":18.332558007271103,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:37","end":"19:22","startHours":17.620576636084262,"endHours":19.370576636084262,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:42","startHours":23.9572150848927,"endHours":24.69638527879164,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:47","end":"08:10","startHours":6.783023727600079,"endHours":8.168967841160601,"quality":"auspicious"},{"name":"Kāla","start":"08:10","end":"09:33","startHours":8.168967841160601,"endHours":9.554911954721124,"quality":"inauspicious"},{"name":"Śubha","start":"09:33","end":"10:56","startHours":9.554911954721124,"endHours":10.940856068281647,"quality":"auspicious"},{"name":"Roga","start":"10:56","end":"12:20","startHours":10.940856068281647,"endHours":12.32680018184217,"quality":"inauspicious"},{"name":"Udveg","start":"12:20","end":"13:43","startHours":12.32680018184217,"endHours":13.712744295402693,"quality":"inauspicious"},{"name":"Chala","start":"13:43","end":"15:06","startHours":13.712744295402693,"endHours":15.098688408963216,"quality":"neutral"},{"name":"Labha","start":"15:06","end":"16:29","startHours":15.098688408963216,"endHours":16.48463252252374,"quality":"auspicious"},{"name":"Amṛta","start":"16:29","end":"17:52","startHours":16.48463252252374,"endHours":17.870576636084262,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:52","end":"19:29","startHours":17.870576636084262,"endHours":19.48463252252374,"quality":"neutral"},{"name":"Labha","start":"19:29","end":"21:06","startHours":19.48463252252374,"endHours":21.098688408963216,"quality":"auspicious"},{"name":"Amṛta","start":"21:06","end":"22:43","startHours":21.098688408963216,"endHours":22.712744295402693,"quality":"auspicious"},{"name":"Kāla","start":"22:43","end":"00:20","startHours":22.712744295402693,"endHours":24.32680018184217,"quality":"inauspicious"},{"name":"Śubha","start":"00:20","end":"01:56","startHours":24.32680018184217,"endHours":25.940856068281647,"quality":"auspicious"},{"name":"Roga","start":"01:56","end":"03:33","startHours":25.940856068281647,"endHours":27.554911954721124,"quality":"inauspicious"},{"name":"Udveg","start":"03:33","end":"05:10","startHours":27.554911954721124,"endHours":29.1689678411606,"quality":"inauspicious"},{"name":"Chala","start":"05:10","end":"06:47","startHours":29.1689678411606,"endHours":30.783023727600078,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:47","end":"07:47","startHours":6.783023727600079,"endHours":7.783023727600079,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:47","end":"08:47","startHours":7.783023727600079,"endHours":8.783023727600078,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:47","end":"09:47","startHours":8.783023727600078,"endHours":9.783023727600078,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:47","end":"10:47","startHours":9.783023727600078,"endHours":10.783023727600078,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:47","end":"11:47","startHours":10.783023727600078,"endHours":11.783023727600078,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:47","end":"12:47","startHours":11.783023727600078,"endHours":12.783023727600078,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:47","end":"13:47","startHours":12.783023727600078,"endHours":13.783023727600078,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:47","end":"14:47","startHours":13.783023727600078,"endHours":14.783023727600078,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:47","end":"15:47","startHours":14.783023727600078,"endHours":15.783023727600078,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:47","end":"16:47","startHours":15.783023727600078,"endHours":16.783023727600078,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:47","end":"17:47","startHours":16.783023727600078,"endHours":17.783023727600078,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:47","end":"18:47","startHours":17.783023727600078,"endHours":18.783023727600078,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:47","end":"19:47","startHours":18.783023727600078,"endHours":19.783023727600078,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:47","end":"20:47","startHours":19.783023727600078,"endHours":20.783023727600078,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:47","end":"21:47","startHours":20.783023727600078,"endHours":21.783023727600078,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:47","end":"22:47","startHours":21.783023727600078,"endHours":22.783023727600078,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:47","end":"23:47","startHours":22.783023727600078,"endHours":23.783023727600078,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:47","end":"00:47","startHours":23.783023727600078,"endHours":24.783023727600078,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:47","end":"01:47","startHours":24.783023727600078,"endHours":25.783023727600078,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:47","end":"02:47","startHours":25.783023727600078,"endHours":26.783023727600078,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:47","end":"03:47","startHours":26.783023727600078,"endHours":27.783023727600078,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:47","end":"04:47","startHours":27.783023727600078,"endHours":28.783023727600078,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:47","end":"05:47","startHours":28.783023727600078,"endHours":29.783023727600078,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:47","end":"06:47","startHours":29.783023727600078,"endHours":30.783023727600078,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":12.362599667421282,"eotMinutes":-3.0500109105302213,"ayanamsa":24.0295}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Tṛtīyā · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[{"id":"varaha-jayanti","name":"Varāha Jayantī","name_sanskrit":"वराह जयन्ती","tradition":"Vaishnava","associated_deity":"Varāha (3rd daśāvatāra of Krishna)","deity_avatara_index":12,"significance":"Varāha lifted Bhū-Devī from the cosmic ocean.","vrata":false,"detection":{"tithi_number":3,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":4,"sources":["Bhāgavata 3.13"]},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 20, 2012 CE · Perth, Australia · Vidhyamitra","description":"August 20, 2012 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 06:47, sūryāsta 17:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2012-08-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2012-08-20","sa":"https://sa.vidhyamitra.com/city/perth/2012-08-20","hi":"https://hi.vidhyamitra.com/city/perth/2012-08-20","x-default":"https://vidhyamitra.com/city/perth/2012-08-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T04:39:27.115Z","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":"2026-05-16T04:39:27.115Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T04:39:27.115Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}