{"id":"vidhyamitra:city-day:perth:1971-07-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1971-07-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-07-27","date_display":"July 27, 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":7,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441159.770833,"kali_year":5073,"ahargana":1852694.2708,"sun":{"sidereal_longitude":99.4851,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":155.1615,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.6764,"elapsed_within_tithi_degrees":7.6764},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":155.1615,"elapsed_within_degrees":8.4948},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.6466},"karana":{"half_tithi_index":9,"name":"Bālava"},"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":1971,"month":7,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441159.770833,"ahargana":1852694.2708,"kali_year":5073,"ayanamsa_lahiri":23.4558,"grahas":{"sun":{"sidereal_longitude":99.92170199999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"moon":{"sidereal_longitude":152.434302,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":-2.8799},"mars":{"sidereal_longitude":297.27380199999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":127.353702,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":213.89140199999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":91.618202,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":40.95710200000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":295.3417,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":115.3417,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1971,"month":7,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441159.770833,"kali_year":5073,"ahargana":1852694.2708,"sun":{"sidereal_longitude":99.4851,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":155.1615,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.6764,"elapsed_within_tithi_degrees":7.6764},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":155.1615,"elapsed_within_degrees":8.4948},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.6466},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.88,"elongation":55.676},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.88,"opposition_distance":124.324}},"eclipse_window_40days":[{"offset_days":11,"type":"lunar","occurs":true,"moon_latitude":-0.252,"opposition_distance":1.604}]},"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":"07:09","sunsetLocal":"17:36","solarNoonLocal":"12:23","dayLengthHours":10.45049471906028,"dayLengthDisplay":"10 Hours 27 Mins 02 Secs","nightLengthDisplay":"13 Hours 32 Mins 58 Secs","moonriseLocal":"09:54","moonsetLocal":"21:51","rahuKala":{"name":"Rāhu Kāla","start":"14:59","end":"16:18","startHours":14.991637907928366,"endHours":16.2979497478109,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:46","end":"11:04","startHours":9.766390548398226,"endHours":11.07270238828076,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:23","end":"13:41","startHours":12.379014228163296,"endHours":13.685326068045832,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:56","startHours":9.592215636413888,"endHours":9.940565460382564,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:52","startHours":7.589204148594001,"endHours":7.867884007768941,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:44","startHours":12.03066440419462,"endHours":12.727364052131971,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:27","startHours":5.760367572758452,"endHours":6.457067220695803,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:17","end":"07:09","startHours":6.282892308711466,"endHours":7.153766868633156,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:49","startHours":14.120763348006676,"endHours":14.817462995944028,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.404261587693437,"endHours":17.804261587693436,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:02","startHours":17.604261587693436,"endHours":18.03969886765428,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.354261587693436,"endHours":19.104261587693436,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:44","startHours":24.03066440419462,"endHours":24.72736405213197,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:09","end":"08:28","startHours":7.153766868633156,"endHours":8.460078708515692,"quality":"inauspicious"},{"name":"Udveg","start":"08:28","end":"09:46","startHours":8.460078708515692,"endHours":9.766390548398226,"quality":"inauspicious"},{"name":"Chala","start":"09:46","end":"11:04","startHours":9.766390548398226,"endHours":11.07270238828076,"quality":"neutral"},{"name":"Labha","start":"11:04","end":"12:23","startHours":11.07270238828076,"endHours":12.379014228163296,"quality":"auspicious"},{"name":"Amṛta","start":"12:23","end":"13:41","startHours":12.379014228163296,"endHours":13.685326068045832,"quality":"auspicious"},{"name":"Kāla","start":"13:41","end":"14:59","startHours":13.685326068045832,"endHours":14.991637907928366,"quality":"inauspicious"},{"name":"Śubha","start":"14:59","end":"16:18","startHours":14.991637907928366,"endHours":16.2979497478109,"quality":"auspicious"},{"name":"Roga","start":"16:18","end":"17:36","startHours":16.2979497478109,"endHours":17.604261587693436,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:36","end":"19:18","startHours":17.604261587693436,"endHours":19.2979497478109,"quality":"inauspicious"},{"name":"Śubha","start":"19:18","end":"20:59","startHours":19.2979497478109,"endHours":20.991637907928364,"quality":"auspicious"},{"name":"Roga","start":"20:59","end":"22:41","startHours":20.991637907928364,"endHours":22.685326068045832,"quality":"inauspicious"},{"name":"Udveg","start":"22:41","end":"00:23","startHours":22.685326068045832,"endHours":24.379014228163296,"quality":"inauspicious"},{"name":"Chala","start":"00:23","end":"02:04","startHours":24.379014228163296,"endHours":26.07270238828076,"quality":"neutral"},{"name":"Labha","start":"02:04","end":"03:46","startHours":26.07270238828076,"endHours":27.766390548398228,"quality":"auspicious"},{"name":"Amṛta","start":"03:46","end":"05:28","startHours":27.766390548398228,"endHours":29.46007870851569,"quality":"auspicious"},{"name":"Kāla","start":"05:28","end":"07:09","startHours":29.46007870851569,"endHours":31.153766868633156,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:09","end":"08:09","startHours":7.153766868633156,"endHours":8.153766868633156,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:09","end":"09:09","startHours":8.153766868633156,"endHours":9.153766868633156,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:09","end":"10:09","startHours":9.153766868633156,"endHours":10.153766868633156,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:09","end":"11:09","startHours":10.153766868633156,"endHours":11.153766868633156,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:09","end":"12:09","startHours":11.153766868633156,"endHours":12.153766868633156,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:09","end":"13:09","startHours":12.153766868633156,"endHours":13.153766868633156,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:09","end":"14:09","startHours":13.153766868633156,"endHours":14.153766868633156,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:09","end":"15:09","startHours":14.153766868633156,"endHours":15.153766868633156,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:09","end":"16:09","startHours":15.153766868633156,"endHours":16.153766868633156,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:09","end":"17:09","startHours":16.153766868633156,"endHours":17.153766868633156,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:09","end":"18:09","startHours":17.153766868633156,"endHours":18.153766868633156,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:09","end":"19:09","startHours":18.153766868633156,"endHours":19.153766868633156,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:09","end":"20:09","startHours":19.153766868633156,"endHours":20.153766868633156,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:09","end":"21:09","startHours":20.153766868633156,"endHours":21.153766868633156,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:09","end":"22:09","startHours":21.153766868633156,"endHours":22.153766868633156,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:09","end":"23:09","startHours":22.153766868633156,"endHours":23.153766868633156,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:09","end":"00:09","startHours":23.153766868633156,"endHours":24.153766868633156,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:09","end":"01:09","startHours":24.153766868633156,"endHours":25.153766868633156,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:09","end":"02:09","startHours":25.153766868633156,"endHours":26.153766868633156,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:09","end":"03:09","startHours":26.153766868633156,"endHours":27.153766868633156,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:09","end":"04:09","startHours":27.153766868633156,"endHours":28.153766868633156,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:09","end":"05:09","startHours":28.153766868633156,"endHours":29.153766868633156,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:09","end":"06:09","startHours":29.153766868633156,"endHours":30.153766868633156,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:09","end":"07:09","startHours":30.153766868633156,"endHours":31.153766868633156,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","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":19.39823290731753,"eotMinutes":-6.182853689797819,"ayanamsa":23.4558}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"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 Pañcamī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"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 July 27, 1971 CE · Perth, Australia · Vidhyamitra","description":"July 27, 1971 CE for Perth, Australia: Śukla Pañcamī, sūryodaya 07:09, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1971-07-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1971-07-27","sa":"https://sa.vidhyamitra.com/city/perth/1971-07-27","hi":"https://hi.vidhyamitra.com/city/perth/1971-07-27","x-default":"https://vidhyamitra.com/city/perth/1971-07-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:02:01.212Z","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":"2026-05-31T19:02:01.212Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:02:01.212Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}