{"id":"vidhyamitra:city-day:perth:1997-08-03:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1997-08-03","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-08-03","date_display":"August 3, 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":8,"day":3,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450663.770833,"kali_year":5099,"ahargana":1862198.2708,"sun":{"sidereal_longitude":106.3958,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":104.1978,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.802,"elapsed_within_tithi_degrees":9.802},"nakshatra":{"number":8,"name":"Puṣya","pada":4,"moon_longitude":104.1978,"elapsed_within_degrees":10.8645},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.5936},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":8,"day":3,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450663.770833,"ahargana":1862198.2708,"kali_year":5099,"ayanamsa_lahiri":23.8193,"grahas":{"sun":{"sidereal_longitude":106.93838,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":103.53847999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false,"latitude":-3.3202},"mars":{"sidereal_longitude":179.40838000000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":134.29358000000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":294.04697999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":138.81418000000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":356.49988,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":151.7741,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":331.7741,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1997,"month":8,"day":3,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450663.770833,"kali_year":5099,"ahargana":1862198.2708,"sun":{"sidereal_longitude":106.3958,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":104.1978,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.802,"elapsed_within_tithi_degrees":9.802},"nakshatra":{"number":8,"name":"Puṣya","pada":4,"moon_longitude":104.1978,"elapsed_within_degrees":10.8645},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.5936},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.32,"elongation":2.198},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.32,"opposition_distance":177.802}},"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":"07:04","sunsetLocal":"17:41","solarNoonLocal":"12:22","dayLengthHours":10.624497604796069,"dayLengthDisplay":"10 Hours 37 Mins 28 Secs","nightLengthDisplay":"13 Hours 22 Mins 32 Secs","moonriseLocal":"06:54","moonsetLocal":"17:24","rahuKala":{"name":"Rāhu Kāla","start":"16:21","end":"17:41","startHours":16.358135517737747,"endHours":17.686197718337255,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:22","end":"13:42","startHours":12.37394891593922,"endHours":13.702011116538728,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:02","end":"16:21","startHours":15.030073317138235,"endHours":16.358135517737747,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:32","end":"09:54","startHours":9.540749554660268,"endHours":9.894899474820136,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:30","end":"07:47","startHours":7.504387513741021,"endHours":7.787707449868916,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:44","startHours":12.01979899577935,"endHours":12.72809883609909,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:21","startHours":5.6451004329017085,"endHours":6.353400273221447,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:11","end":"07:04","startHours":6.176325313141512,"endHours":7.0617001135411845,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:51","startHours":14.144698516738565,"endHours":14.852998357058302,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.486197718337255,"endHours":17.886197718337254,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:08","startHours":17.686197718337255,"endHours":18.12888511853709,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.436197718337255,"endHours":19.186197718337255,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:44","startHours":24.01979899577935,"endHours":24.72809883609909,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:04","end":"08:23","startHours":7.0617001135411845,"endHours":8.389762314140693,"quality":"inauspicious"},{"name":"Chala","start":"08:23","end":"09:43","startHours":8.389762314140693,"endHours":9.717824514740201,"quality":"neutral"},{"name":"Labha","start":"09:43","end":"11:03","startHours":9.717824514740201,"endHours":11.04588671533971,"quality":"auspicious"},{"name":"Amṛta","start":"11:03","end":"12:22","startHours":11.04588671533971,"endHours":12.37394891593922,"quality":"auspicious"},{"name":"Kāla","start":"12:22","end":"13:42","startHours":12.37394891593922,"endHours":13.702011116538728,"quality":"inauspicious"},{"name":"Śubha","start":"13:42","end":"15:02","startHours":13.702011116538728,"endHours":15.030073317138235,"quality":"auspicious"},{"name":"Roga","start":"15:02","end":"16:21","startHours":15.030073317138235,"endHours":16.358135517737747,"quality":"inauspicious"},{"name":"Udveg","start":"16:21","end":"17:41","startHours":16.358135517737747,"endHours":17.686197718337255,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:41","end":"19:21","startHours":17.686197718337255,"endHours":19.358135517737747,"quality":"auspicious"},{"name":"Roga","start":"19:21","end":"21:02","startHours":19.358135517737747,"endHours":21.03007331713824,"quality":"inauspicious"},{"name":"Udveg","start":"21:02","end":"22:42","startHours":21.03007331713824,"endHours":22.702011116538728,"quality":"inauspicious"},{"name":"Chala","start":"22:42","end":"00:22","startHours":22.702011116538728,"endHours":24.37394891593922,"quality":"neutral"},{"name":"Labha","start":"00:22","end":"02:03","startHours":24.37394891593922,"endHours":26.045886715339712,"quality":"auspicious"},{"name":"Amṛta","start":"02:03","end":"03:43","startHours":26.045886715339712,"endHours":27.7178245147402,"quality":"auspicious"},{"name":"Kāla","start":"03:43","end":"05:23","startHours":27.7178245147402,"endHours":29.389762314140693,"quality":"inauspicious"},{"name":"Śubha","start":"05:23","end":"07:04","startHours":29.389762314140693,"endHours":31.061700113541185,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:04","end":"08:04","startHours":7.0617001135411845,"endHours":8.061700113541185,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:04","end":"09:04","startHours":8.061700113541185,"endHours":9.061700113541185,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:04","end":"10:04","startHours":9.061700113541185,"endHours":10.061700113541185,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:04","end":"11:04","startHours":10.061700113541185,"endHours":11.061700113541185,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:04","end":"12:04","startHours":11.061700113541185,"endHours":12.061700113541185,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:04","end":"13:04","startHours":12.061700113541185,"endHours":13.061700113541185,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:04","end":"14:04","startHours":13.061700113541185,"endHours":14.061700113541185,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:04","end":"15:04","startHours":14.061700113541185,"endHours":15.061700113541185,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:04","end":"16:04","startHours":15.061700113541185,"endHours":16.061700113541185,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:04","end":"17:04","startHours":16.061700113541185,"endHours":17.061700113541185,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:04","end":"18:04","startHours":17.061700113541185,"endHours":18.061700113541185,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:04","end":"19:04","startHours":18.061700113541185,"endHours":19.061700113541185,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:04","end":"20:04","startHours":19.061700113541185,"endHours":20.061700113541185,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:04","end":"21:04","startHours":20.061700113541185,"endHours":21.061700113541185,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:04","end":"22:04","startHours":21.061700113541185,"endHours":22.061700113541185,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:04","end":"23:04","startHours":22.061700113541185,"endHours":23.061700113541185,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:04","end":"00:04","startHours":23.061700113541185,"endHours":24.061700113541185,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:04","end":"01:04","startHours":24.061700113541185,"endHours":25.061700113541185,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:04","end":"02:04","startHours":25.061700113541185,"endHours":26.061700113541185,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:04","end":"03:04","startHours":26.061700113541185,"endHours":27.061700113541185,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:04","end":"04:04","startHours":27.061700113541185,"endHours":28.061700113541185,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:04","end":"05:04","startHours":28.061700113541185,"endHours":29.061700113541185,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:04","end":"06:04","startHours":29.061700113541185,"endHours":30.061700113541185,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:04","end":"07:04","startHours":30.061700113541185,"endHours":31.061700113541185,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":17.53410149798818,"eotMinutes":-5.878934956353266,"ayanamsa":23.8193}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Amāvasyā · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","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 August 3, 1997 CE · Perth, Australia · Vidhyamitra","description":"August 3, 1997 CE for Perth, Australia: Kṛṣṇa Amāvasyā, sūryodaya 07:04, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1997-08-03","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1997-08-03","sa":"https://sa.vidhyamitra.com/city/perth/1997-08-03","hi":"https://hi.vidhyamitra.com/city/perth/1997-08-03","x-default":"https://vidhyamitra.com/city/perth/1997-08-03"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T11:09:58.389Z","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":"2026-05-17T11:09:58.389Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T11:09:58.389Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}