{"id":"vidhyamitra:city-day:perth:1971-07-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1971-07-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-07-30","date_display":"July 30, 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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441162.770833,"kali_year":5073,"ahargana":1852697.2708,"sun":{"sidereal_longitude":102.3342,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":190.3017,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":87.9675,"elapsed_within_tithi_degrees":3.9675},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.3017,"elapsed_within_degrees":3.635},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.6359},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441162.770833,"ahargana":1852697.2708,"kali_year":5073,"ayanamsa_lahiri":23.4559,"grahas":{"sun":{"sidereal_longitude":102.78908799999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"moon":{"sidereal_longitude":188.00268800000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":-4.3488},"mars":{"sidereal_longitude":296.667588,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":130.40788799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":213.926688,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":95.30568800000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":41.20998800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":295.1828,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":115.1828,"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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441162.770833,"kali_year":5073,"ahargana":1852697.2708,"sun":{"sidereal_longitude":102.3342,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":190.3017,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":87.9675,"elapsed_within_tithi_degrees":3.9675},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.3017,"elapsed_within_degrees":3.635},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.6359},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.349,"elongation":87.968},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.349,"opposition_distance":92.032}},"eclipse_window_40days":[{"offset_days":8,"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":"07:07","sunsetLocal":"17:38","solarNoonLocal":"12:23","dayLengthHours":10.51530018515052,"dayLengthDisplay":"10 Hours 30 Mins 55 Secs","nightLengthDisplay":"13 Hours 29 Mins 05 Secs","moonriseLocal":"11:30","moonsetLocal":"00:37","rahuKala":{"name":"Rāhu Kāla","start":"11:04","end":"12:23","startHours":11.063465572135854,"endHours":12.37787809527967,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:00","end":"16:19","startHours":15.0067031415673,"endHours":16.321115664711115,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:26","end":"09:45","startHours":8.434640525848225,"endHours":9.74905304899204,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:55","startHours":9.573798045906198,"endHours":9.924308052077883,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:34","end":"07:50","startHours":7.558365510419015,"endHours":7.838773515356362,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:44","startHours":12.027368089107986,"endHours":12.728388101451353,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:43","end":"06:25","startHours":5.718187978017674,"endHours":6.419207990361042,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:15","end":"07:07","startHours":6.2439529872752,"endHours":7.12022800270441,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:08","end":"14:50","startHours":14.13042812613809,"endHours":14.83144813848146,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:26","end":"17:50","startHours":17.43552818785493,"endHours":17.83552818785493,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:38","end":"18:04","startHours":17.63552818785493,"endHours":18.073665695569535,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:23","end":"19:08","startHours":17.38552818785493,"endHours":19.13552818785493,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:44","startHours":24.027368089107984,"endHours":24.728388101451355,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:07","end":"08:26","startHours":7.12022800270441,"endHours":8.434640525848225,"quality":"neutral"},{"name":"Labha","start":"08:26","end":"09:45","startHours":8.434640525848225,"endHours":9.74905304899204,"quality":"auspicious"},{"name":"Amṛta","start":"09:45","end":"11:04","startHours":9.74905304899204,"endHours":11.063465572135854,"quality":"auspicious"},{"name":"Kāla","start":"11:04","end":"12:23","startHours":11.063465572135854,"endHours":12.37787809527967,"quality":"inauspicious"},{"name":"Śubha","start":"12:23","end":"13:42","startHours":12.37787809527967,"endHours":13.692290618423485,"quality":"auspicious"},{"name":"Roga","start":"13:42","end":"15:00","startHours":13.692290618423485,"endHours":15.0067031415673,"quality":"inauspicious"},{"name":"Udveg","start":"15:00","end":"16:19","startHours":15.0067031415673,"endHours":16.321115664711115,"quality":"inauspicious"},{"name":"Chala","start":"16:19","end":"17:38","startHours":16.321115664711115,"endHours":17.63552818785493,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:38","end":"19:19","startHours":17.63552818785493,"endHours":19.321115664711115,"quality":"inauspicious"},{"name":"Udveg","start":"19:19","end":"21:00","startHours":19.321115664711115,"endHours":21.0067031415673,"quality":"inauspicious"},{"name":"Chala","start":"21:00","end":"22:42","startHours":21.0067031415673,"endHours":22.692290618423485,"quality":"neutral"},{"name":"Labha","start":"22:42","end":"00:23","startHours":22.692290618423485,"endHours":24.37787809527967,"quality":"auspicious"},{"name":"Amṛta","start":"00:23","end":"02:04","startHours":24.37787809527967,"endHours":26.063465572135854,"quality":"auspicious"},{"name":"Kāla","start":"02:04","end":"03:45","startHours":26.063465572135854,"endHours":27.74905304899204,"quality":"inauspicious"},{"name":"Śubha","start":"03:45","end":"05:26","startHours":27.74905304899204,"endHours":29.434640525848224,"quality":"auspicious"},{"name":"Roga","start":"05:26","end":"07:07","startHours":29.434640525848224,"endHours":31.12022800270441,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:07","end":"08:07","startHours":7.12022800270441,"endHours":8.12022800270441,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:07","end":"09:07","startHours":8.12022800270441,"endHours":9.12022800270441,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:07","end":"10:07","startHours":9.12022800270441,"endHours":10.12022800270441,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:07","end":"11:07","startHours":10.12022800270441,"endHours":11.12022800270441,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:07","end":"12:07","startHours":11.12022800270441,"endHours":12.12022800270441,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:07","end":"13:07","startHours":12.12022800270441,"endHours":13.12022800270441,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:07","end":"14:07","startHours":13.12022800270441,"endHours":14.12022800270441,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:07","end":"15:07","startHours":14.12022800270441,"endHours":15.12022800270441,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:07","end":"16:07","startHours":15.12022800270441,"endHours":16.12022800270441,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:07","end":"17:07","startHours":16.12022800270441,"endHours":17.12022800270441,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:07","end":"18:07","startHours":17.12022800270441,"endHours":18.12022800270441,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:07","end":"19:07","startHours":18.12022800270441,"endHours":19.12022800270441,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:07","end":"20:07","startHours":19.12022800270441,"endHours":20.12022800270441,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:07","end":"21:07","startHours":20.12022800270441,"endHours":21.12022800270441,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:07","end":"22:07","startHours":21.12022800270441,"endHours":22.12022800270441,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:07","end":"23:07","startHours":22.12022800270441,"endHours":23.12022800270441,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:07","end":"00:07","startHours":23.12022800270441,"endHours":24.12022800270441,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:07","end":"01:07","startHours":24.12022800270441,"endHours":25.12022800270441,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:07","end":"02:07","startHours":25.12022800270441,"endHours":26.12022800270441,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:07","end":"03:07","startHours":26.12022800270441,"endHours":27.12022800270441,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:07","end":"04:07","startHours":27.12022800270441,"endHours":28.12022800270441,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:07","end":"05:07","startHours":28.12022800270441,"endHours":29.12022800270441,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:07","end":"06:07","startHours":29.12022800270441,"endHours":30.12022800270441,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:07","end":"07:07","startHours":30.12022800270441,"endHours":31.12022800270441,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"South-East","anandadiYoga":{"name":"Dhvaja","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":18.709483623625093,"eotMinutes":-6.1146857167802535,"ayanamsa":23.4559}},"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 Aṣṭamī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 July 30, 1971 CE · Perth, Australia · Vidhyamitra","description":"July 30, 1971 CE for Perth, Australia: Śukla Aṣṭamī, sūryodaya 07:07, sūryāsta 17:38.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1971-07-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1971-07-30","sa":"https://sa.vidhyamitra.com/city/perth/1971-07-30","hi":"https://hi.vidhyamitra.com/city/perth/1971-07-30","x-default":"https://vidhyamitra.com/city/perth/1971-07-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:11:46.118Z","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":"2026-05-31T14:11:46.118Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:11:46.118Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}