{"id":"vidhyamitra:city-day:perth:1971-05-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1971-05-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-05-22","date_display":"May 22, 1971 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":1971,"month":5,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441093.770833,"kali_year":5073,"ahargana":1852628.2708,"sun":{"sidereal_longitude":36.8692,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":5.3789,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.5097,"elapsed_within_tithi_degrees":4.5097},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":5.3789,"elapsed_within_degrees":5.3789},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.2482},"karana":{"half_tithi_index":54,"name":"Gara"},"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":1971,"month":5,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441093.770833,"ahargana":1852628.2708,"kali_year":5073,"ayanamsa_lahiri":23.4533,"grahas":{"sun":{"sidereal_longitude":36.86112400000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":3.163724000000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":4.1274},"mars":{"sidereal_longitude":285.736224,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":11.927323999999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":219.03202399999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":11.208524000000011,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":33.44342399999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":298.8387,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":118.8387,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1971,"month":5,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441093.770833,"kali_year":5073,"ahargana":1852628.2708,"sun":{"sidereal_longitude":36.8692,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":5.3789,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.5097,"elapsed_within_tithi_degrees":4.5097},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":5.3789,"elapsed_within_degrees":5.3789},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.2482},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.127,"elongation":31.49},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.127,"opposition_distance":148.51}},"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":"07:02","sunsetLocal":"17:24","solarNoonLocal":"12:13","dayLengthHours":10.372871252525275,"dayLengthDisplay":"10 Hours 22 Mins 22 Secs","nightLengthDisplay":"13 Hours 37 Mins 38 Secs","moonriseLocal":"04:21","moonsetLocal":"15:35","rahuKala":{"name":"Rāhu Kāla","start":"09:37","end":"10:55","startHours":9.624886300097227,"endHours":10.921495206662886,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:31","end":"14:49","startHours":13.514713019794204,"endHours":14.811321926359865,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:02","end":"08:20","startHours":7.031668486965908,"endHours":8.328277393531568,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:48","startHours":9.452005112555138,"endHours":9.797767487639316,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:44","startHours":7.463871455821128,"endHours":7.740481355888468,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.872341738144371,"endHours":12.563866488312723,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:20","startHours":5.648618986629205,"endHours":6.340143736797557,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:10","end":"07:02","startHours":6.167262549255469,"endHours":7.031668486965908,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:57","end":"14:38","startHours":13.946915988649426,"endHours":14.638440738817778,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:12","end":"17:36","startHours":17.204539739491185,"endHours":17.604539739491184,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:24","end":"17:50","startHours":17.404539739491184,"endHours":17.836742708346403,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:09","end":"18:54","startHours":17.154539739491184,"endHours":18.904539739491184,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.87234173814437,"endHours":24.563866488312726,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:02","end":"08:20","startHours":7.031668486965908,"endHours":8.328277393531568,"quality":"inauspicious"},{"name":"Śubha","start":"08:20","end":"09:37","startHours":8.328277393531568,"endHours":9.624886300097227,"quality":"auspicious"},{"name":"Roga","start":"09:37","end":"10:55","startHours":9.624886300097227,"endHours":10.921495206662886,"quality":"inauspicious"},{"name":"Udveg","start":"10:55","end":"12:13","startHours":10.921495206662886,"endHours":12.218104113228545,"quality":"inauspicious"},{"name":"Chala","start":"12:13","end":"13:31","startHours":12.218104113228545,"endHours":13.514713019794204,"quality":"neutral"},{"name":"Labha","start":"13:31","end":"14:49","startHours":13.514713019794204,"endHours":14.811321926359865,"quality":"auspicious"},{"name":"Amṛta","start":"14:49","end":"16:06","startHours":14.811321926359865,"endHours":16.107930832925526,"quality":"auspicious"},{"name":"Kāla","start":"16:06","end":"17:24","startHours":16.107930832925526,"endHours":17.404539739491184,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:24","end":"19:06","startHours":17.404539739491184,"endHours":19.107930832925526,"quality":"auspicious"},{"name":"Amṛta","start":"19:06","end":"20:49","startHours":19.107930832925526,"endHours":20.811321926359867,"quality":"auspicious"},{"name":"Kāla","start":"20:49","end":"22:31","startHours":20.811321926359867,"endHours":22.514713019794208,"quality":"inauspicious"},{"name":"Śubha","start":"22:31","end":"00:13","startHours":22.514713019794208,"endHours":24.21810411322855,"quality":"auspicious"},{"name":"Roga","start":"00:13","end":"01:55","startHours":24.21810411322855,"endHours":25.92149520666289,"quality":"inauspicious"},{"name":"Udveg","start":"01:55","end":"03:37","startHours":25.92149520666289,"endHours":27.624886300097227,"quality":"inauspicious"},{"name":"Chala","start":"03:37","end":"05:20","startHours":27.624886300097227,"endHours":29.328277393531568,"quality":"neutral"},{"name":"Labha","start":"05:20","end":"07:02","startHours":29.328277393531568,"endHours":31.03166848696591,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:02","end":"08:02","startHours":7.031668486965908,"endHours":8.03166848696591,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:02","end":"09:02","startHours":8.03166848696591,"endHours":9.03166848696591,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:02","end":"10:02","startHours":9.03166848696591,"endHours":10.03166848696591,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:02","end":"11:02","startHours":10.03166848696591,"endHours":11.03166848696591,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:02","end":"12:02","startHours":11.03166848696591,"endHours":12.03166848696591,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:02","end":"13:02","startHours":12.03166848696591,"endHours":13.03166848696591,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:02","end":"14:02","startHours":13.03166848696591,"endHours":14.03166848696591,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:02","end":"15:02","startHours":14.03166848696591,"endHours":15.03166848696591,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:02","end":"16:02","startHours":15.03166848696591,"endHours":16.03166848696591,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:02","end":"17:02","startHours":16.03166848696591,"endHours":17.03166848696591,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:02","end":"18:02","startHours":17.03166848696591,"endHours":18.03166848696591,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:02","end":"19:02","startHours":18.03166848696591,"endHours":19.03166848696591,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:02","end":"20:02","startHours":19.03166848696591,"endHours":20.03166848696591,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:02","end":"21:02","startHours":20.03166848696591,"endHours":21.03166848696591,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:02","end":"22:02","startHours":21.03166848696591,"endHours":22.03166848696591,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:02","end":"23:02","startHours":22.03166848696591,"endHours":23.03166848696591,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:02","end":"00:02","startHours":23.03166848696591,"endHours":24.03166848696591,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:02","end":"01:02","startHours":24.03166848696591,"endHours":25.03166848696591,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:02","end":"02:02","startHours":25.03166848696591,"endHours":26.03166848696591,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:02","end":"03:02","startHours":26.03166848696591,"endHours":27.03166848696591,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:02","end":"04:02","startHours":27.03166848696591,"endHours":28.03166848696591,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:02","end":"05:02","startHours":28.03166848696591,"endHours":29.03166848696591,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:02","end":"06:02","startHours":29.03166848696591,"endHours":30.03166848696591,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:02","end":"07:02","startHours":30.03166848696591,"endHours":31.03166848696591,"planetary_lord":"Mercury"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":20.21430787469926,"eotMinutes":3.4717532062871586,"ayanamsa":23.4533}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Trayodaśī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 May 22, 1971 CE · Perth, Australia · Vidhyamitra","description":"May 22, 1971 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 07:02, sūryāsta 17:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1971-05-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1971-05-22","sa":"https://sa.vidhyamitra.com/city/perth/1971-05-22","hi":"https://hi.vidhyamitra.com/city/perth/1971-05-22","x-default":"https://vidhyamitra.com/city/perth/1971-05-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T10:40:07.817Z","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":"2026-06-01T10:40:07.817Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T10:40:07.817Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}