{"id":"vidhyamitra:city-day:perth:1997-05-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1997-05-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-05-07","date_display":"May 7, 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":5,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450575.770833,"kali_year":5099,"ahargana":1862110.2708,"sun":{"sidereal_longitude":22.7495,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":26.8346,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":4.0851,"elapsed_within_tithi_degrees":4.0851},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":26.8346,"elapsed_within_degrees":0.1679},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":49.5841},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":5,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450575.770833,"ahargana":1862110.2708,"kali_year":5099,"ayanamsa_lahiri":23.8159,"grahas":{"sun":{"sidereal_longitude":22.714642000000026,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":25.03604200000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":-3.4658},"mars":{"sidereal_longitude":143.44184199999995,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":5.836942000000022,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":296.384942,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":31.713441999999986,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":350.929342,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":156.4367,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":336.4367,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"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":5,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450575.770833,"kali_year":5099,"ahargana":1862110.2708,"sun":{"sidereal_longitude":22.7495,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":26.8346,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":4.0851,"elapsed_within_tithi_degrees":4.0851},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":26.8346,"elapsed_within_degrees":0.1679},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":49.5841},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.466,"elongation":4.085},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.466,"opposition_distance":175.915}},"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":"06:52","sunsetLocal":"17:34","solarNoonLocal":"12:13","dayLengthHours":10.693946164334896,"dayLengthDisplay":"10 Hours 41 Mins 38 Secs","nightLengthDisplay":"13 Hours 18 Mins 22 Secs","moonriseLocal":"07:05","moonsetLocal":"17:40","rahuKala":{"name":"Rāhu Kāla","start":"12:13","end":"13:33","startHours":12.217438989883235,"endHours":13.554182260425097,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:12","end":"09:33","startHours":8.20720917825765,"endHours":9.54395244879951,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:53","end":"12:13","startHours":10.880695719341372,"endHours":12.217438989883235,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:22","end":"09:43","startHours":9.365720012727262,"endHours":9.722184884871758,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:19","end":"07:36","startHours":7.316046997896407,"endHours":7.601218895612004,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.860974117738738,"endHours":12.57390386202773,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:27","end":"06:09","startHours":5.4446064191378,"endHours":6.157536163426793,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:59","end":"06:52","startHours":5.979303727354545,"endHours":6.870465907715786,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:43","startHours":13.999763350605718,"endHours":14.712693094894712,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:22","end":"17:46","startHours":17.364412072050683,"endHours":17.764412072050682,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:34","end":"18:01","startHours":17.564412072050683,"endHours":18.009993162231304,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:19","end":"19:04","startHours":17.314412072050683,"endHours":19.064412072050683,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.86097411773874,"endHours":24.57390386202773,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:52","end":"08:12","startHours":6.870465907715786,"endHours":8.20720917825765,"quality":"auspicious"},{"name":"Amṛta","start":"08:12","end":"09:33","startHours":8.20720917825765,"endHours":9.54395244879951,"quality":"auspicious"},{"name":"Kāla","start":"09:33","end":"10:53","startHours":9.54395244879951,"endHours":10.880695719341372,"quality":"inauspicious"},{"name":"Śubha","start":"10:53","end":"12:13","startHours":10.880695719341372,"endHours":12.217438989883235,"quality":"auspicious"},{"name":"Roga","start":"12:13","end":"13:33","startHours":12.217438989883235,"endHours":13.554182260425097,"quality":"inauspicious"},{"name":"Udveg","start":"13:33","end":"14:53","startHours":13.554182260425097,"endHours":14.890925530966959,"quality":"inauspicious"},{"name":"Chala","start":"14:53","end":"16:14","startHours":14.890925530966959,"endHours":16.22766880150882,"quality":"neutral"},{"name":"Labha","start":"16:14","end":"17:34","startHours":16.22766880150882,"endHours":17.564412072050683,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:34","end":"19:14","startHours":17.564412072050683,"endHours":19.22766880150882,"quality":"inauspicious"},{"name":"Chala","start":"19:14","end":"20:53","startHours":19.22766880150882,"endHours":20.89092553096696,"quality":"neutral"},{"name":"Labha","start":"20:53","end":"22:33","startHours":20.89092553096696,"endHours":22.554182260425097,"quality":"auspicious"},{"name":"Amṛta","start":"22:33","end":"00:13","startHours":22.554182260425097,"endHours":24.217438989883235,"quality":"auspicious"},{"name":"Kāla","start":"00:13","end":"01:53","startHours":24.217438989883235,"endHours":25.88069571934137,"quality":"inauspicious"},{"name":"Śubha","start":"01:53","end":"03:33","startHours":25.88069571934137,"endHours":27.54395244879951,"quality":"auspicious"},{"name":"Roga","start":"03:33","end":"05:12","startHours":27.54395244879951,"endHours":29.20720917825765,"quality":"inauspicious"},{"name":"Udveg","start":"05:12","end":"06:52","startHours":29.20720917825765,"endHours":30.870465907715786,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:52","end":"07:52","startHours":6.870465907715786,"endHours":7.870465907715786,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:52","end":"08:52","startHours":7.870465907715786,"endHours":8.870465907715786,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:52","end":"09:52","startHours":8.870465907715786,"endHours":9.870465907715786,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:52","end":"10:52","startHours":9.870465907715786,"endHours":10.870465907715786,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:52","end":"11:52","startHours":10.870465907715786,"endHours":11.870465907715786,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:52","end":"12:52","startHours":11.870465907715786,"endHours":12.870465907715786,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:52","end":"13:52","startHours":12.870465907715786,"endHours":13.870465907715786,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:52","end":"14:52","startHours":13.870465907715786,"endHours":14.870465907715786,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:52","end":"15:52","startHours":14.870465907715786,"endHours":15.870465907715786,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:52","end":"16:52","startHours":15.870465907715786,"endHours":16.870465907715786,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:52","end":"17:52","startHours":16.870465907715786,"endHours":17.870465907715786,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:52","end":"18:52","startHours":17.870465907715786,"endHours":18.870465907715786,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:52","end":"19:52","startHours":18.870465907715786,"endHours":19.870465907715786,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:52","end":"20:52","startHours":19.870465907715786,"endHours":20.870465907715786,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:52","end":"21:52","startHours":20.870465907715786,"endHours":21.870465907715786,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:52","end":"22:52","startHours":21.870465907715786,"endHours":22.870465907715786,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:52","end":"23:52","startHours":22.870465907715786,"endHours":23.870465907715786,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:52","end":"00:52","startHours":23.870465907715786,"endHours":24.870465907715786,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:52","end":"01:52","startHours":24.870465907715786,"endHours":25.870465907715786,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:52","end":"02:52","startHours":25.870465907715786,"endHours":26.870465907715786,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:52","end":"03:52","startHours":26.870465907715786,"endHours":27.870465907715786,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:52","end":"04:52","startHours":27.870465907715786,"endHours":28.870465907715786,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:52","end":"05:52","startHours":28.870465907715786,"endHours":29.870465907715786,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:52","end":"06:52","startHours":29.870465907715786,"endHours":30.870465907715786,"planetary_lord":"Sun"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":16.777200660715327,"eotMinutes":3.5116606070058483,"ayanamsa":23.8159}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Pratipada · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","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 May 7, 1997 CE · Perth, Australia · Vidhyamitra","description":"May 7, 1997 CE for Perth, Australia: Śukla Pratipada, sūryodaya 06:52, sūryāsta 17:34.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1997-05-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1997-05-07","sa":"https://sa.vidhyamitra.com/city/perth/1997-05-07","hi":"https://hi.vidhyamitra.com/city/perth/1997-05-07","x-default":"https://vidhyamitra.com/city/perth/1997-05-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T02:30:06.559Z","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":"2026-05-17T02:30:06.559Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T02:30:06.559Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}