{"id":"vidhyamitra:city-day:perth:1997-10-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1997-10-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-10-08","date_display":"October 8, 1997 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":1997,"month":10,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450729.770833,"kali_year":5099,"ahargana":1862264.2708,"sun":{"sidereal_longitude":170.2427,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":245.7636,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":75.5209,"elapsed_within_tithi_degrees":3.5209},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":245.7636,"elapsed_within_degrees":5.7636},"yoga":{"number":5,"name":"Śobhana","sum_longitude":56.0062},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1997,"month":10,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450729.770833,"ahargana":1862264.2708,"kali_year":5099,"ayanamsa_lahiri":23.8218,"grahas":{"sun":{"sidereal_longitude":170.98105800000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"moon":{"sidereal_longitude":242.95275800000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":4.4616},"mars":{"sidereal_longitude":222.62325800000008,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":166.566558,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":288.27095800000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":true},"venus":{"sidereal_longitude":215.91915800000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":353.196858,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":148.2771,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":328.2771,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1997,"month":10,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450729.770833,"kali_year":5099,"ahargana":1862264.2708,"sun":{"sidereal_longitude":170.2427,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":245.7636,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":75.5209,"elapsed_within_tithi_degrees":3.5209},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":245.7636,"elapsed_within_degrees":5.7636},"yoga":{"number":5,"name":"Śobhana","sum_longitude":56.0062},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.462,"elongation":75.521},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.462,"opposition_distance":104.479}},"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":"05:45","sunsetLocal":"18:22","solarNoonLocal":"12:03","dayLengthHours":12.618927381614164,"dayLengthDisplay":"12 Hours 37 Mins 08 Secs","nightLengthDisplay":"11 Hours 22 Mins 52 Secs","moonriseLocal":"09:45","moonsetLocal":"23:57","rahuKala":{"name":"Rāhu Kāla","start":"12:03","end":"13:38","startHours":12.055478079540606,"endHours":13.632844002242376,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:19","end":"08:54","startHours":7.323380311435294,"endHours":8.900746234137063,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:29","end":"12:03","startHours":10.478112156838835,"endHours":12.055478079540606,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:41","end":"09:07","startHours":8.690430777776829,"endHours":9.1110616904973,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:16","end":"06:36","startHours":6.271803029634113,"endHours":6.608307759810491,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:29","startHours":11.634847166820133,"endHours":12.476108992261079,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:04","end":"04:54","startHours":4.063490737851635,"endHours":4.904752563292579,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:42","end":"05:45","startHours":4.694437106932343,"endHours":5.746014388733523,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:00","startHours":14.158632643142965,"endHours":14.999894468583909,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:10","end":"18:34","startHours":18.16494177034769,"endHours":18.564941770347687,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:22","end":"18:53","startHours":18.364941770347688,"endHours":18.890730411248278,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:07","end":"19:52","startHours":18.114941770347688,"endHours":19.864941770347688,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:29","startHours":23.634847166820133,"endHours":24.47610899226108,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:45","end":"07:19","startHours":5.746014388733523,"endHours":7.323380311435294,"quality":"auspicious"},{"name":"Amṛta","start":"07:19","end":"08:54","startHours":7.323380311435294,"endHours":8.900746234137063,"quality":"auspicious"},{"name":"Kāla","start":"08:54","end":"10:29","startHours":8.900746234137063,"endHours":10.478112156838835,"quality":"inauspicious"},{"name":"Śubha","start":"10:29","end":"12:03","startHours":10.478112156838835,"endHours":12.055478079540606,"quality":"auspicious"},{"name":"Roga","start":"12:03","end":"13:38","startHours":12.055478079540606,"endHours":13.632844002242376,"quality":"inauspicious"},{"name":"Udveg","start":"13:38","end":"15:13","startHours":13.632844002242376,"endHours":15.210209924944145,"quality":"inauspicious"},{"name":"Chala","start":"15:13","end":"16:47","startHours":15.210209924944145,"endHours":16.78757584764592,"quality":"neutral"},{"name":"Labha","start":"16:47","end":"18:22","startHours":16.78757584764592,"endHours":18.364941770347688,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:22","end":"19:47","startHours":18.364941770347688,"endHours":19.78757584764592,"quality":"inauspicious"},{"name":"Chala","start":"19:47","end":"21:13","startHours":19.78757584764592,"endHours":21.210209924944145,"quality":"neutral"},{"name":"Labha","start":"21:13","end":"22:38","startHours":21.210209924944145,"endHours":22.632844002242376,"quality":"auspicious"},{"name":"Amṛta","start":"22:38","end":"00:03","startHours":22.632844002242376,"endHours":24.055478079540606,"quality":"auspicious"},{"name":"Kāla","start":"00:03","end":"01:29","startHours":24.055478079540606,"endHours":25.478112156838836,"quality":"inauspicious"},{"name":"Śubha","start":"01:29","end":"02:54","startHours":25.478112156838836,"endHours":26.900746234137067,"quality":"auspicious"},{"name":"Roga","start":"02:54","end":"04:19","startHours":26.900746234137067,"endHours":28.323380311435294,"quality":"inauspicious"},{"name":"Udveg","start":"04:19","end":"05:45","startHours":28.323380311435294,"endHours":29.746014388733524,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.746014388733523,"endHours":6.746014388733523,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.746014388733523,"endHours":7.746014388733523,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.746014388733523,"endHours":8.746014388733524,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.746014388733524,"endHours":9.746014388733524,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.746014388733524,"endHours":10.746014388733524,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.746014388733524,"endHours":11.746014388733524,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.746014388733524,"endHours":12.746014388733524,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.746014388733524,"endHours":13.746014388733524,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.746014388733524,"endHours":14.746014388733524,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.746014388733524,"endHours":15.746014388733524,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.746014388733524,"endHours":16.746014388733524,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.746014388733524,"endHours":17.746014388733524,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.746014388733524,"endHours":18.746014388733524,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.746014388733524,"endHours":19.746014388733524,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.746014388733524,"endHours":20.746014388733524,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.746014388733524,"endHours":21.746014388733524,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.746014388733524,"endHours":22.746014388733524,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.746014388733524,"endHours":23.746014388733524,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.746014388733524,"endHours":24.746014388733524,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.746014388733524,"endHours":25.746014388733524,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.746014388733524,"endHours":26.746014388733524,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.746014388733524,"endHours":27.746014388733524,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.746014388733524,"endHours":28.746014388733524,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.746014388733524,"endHours":29.746014388733524,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-5.832364198380277,"eotMinutes":13.229315227563635,"ayanamsa":23.8218}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Saptamī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 October 8, 1997 CE · Perth, Australia · Vidhyamitra","description":"October 8, 1997 CE for Perth, Australia: Śukla Saptamī, sūryodaya 05:45, sūryāsta 18:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1997-10-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1997-10-08","sa":"https://sa.vidhyamitra.com/city/perth/1997-10-08","hi":"https://hi.vidhyamitra.com/city/perth/1997-10-08","x-default":"https://vidhyamitra.com/city/perth/1997-10-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T09:47:20.496Z","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":"2026-05-17T09:47:20.496Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T09:47:20.496Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}