{"id":"vidhyamitra:city-day:perth:1980-05-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1980-05-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-05-06","date_display":"May 6, 1980 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":1980,"month":5,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444365.770833,"kali_year":5082,"ahargana":1855900.2708,"sun":{"sidereal_longitude":22.1709,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":271.7515,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.5806,"elapsed_within_tithi_degrees":9.5806},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.7515,"elapsed_within_degrees":5.0849},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.9225},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":1980,"month":5,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444365.770833,"ahargana":1855900.2708,"kali_year":5082,"ayanamsa_lahiri":23.5784,"grahas":{"sun":{"sidereal_longitude":22.092809999999986,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":269.18760999999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false,"latitude":2.4964},"mars":{"sidereal_longitude":127.24610999999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":13.689610000000016,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":126.66630999999995,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":63.38740999999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":146.65220999999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":125.4724,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.4724,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1980,"month":5,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444365.770833,"kali_year":5082,"ahargana":1855900.2708,"sun":{"sidereal_longitude":22.1709,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":271.7515,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.5806,"elapsed_within_tithi_degrees":9.5806},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.7515,"elapsed_within_degrees":5.0849},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.9225},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.496,"elongation":110.419},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.496,"opposition_distance":69.581}},"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":"17:35","solarNoonLocal":"12:13","dayLengthHours":10.716503265008006,"dayLengthDisplay":"10 Hours 42 Mins 59 Secs","nightLengthDisplay":"13 Hours 17 Mins 01 Secs","moonriseLocal":"21:42","moonsetLocal":"11:41","rahuKala":{"name":"Rāhu Kāla","start":"14:54","end":"16:14","startHours":14.897808532467659,"endHours":16.237371440593662,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:32","end":"10:53","startHours":9.539556899963657,"endHours":10.879119808089657,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:13","end":"13:33","startHours":12.218682716215657,"endHours":13.558245624341659,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:22","end":"09:43","startHours":9.360948512213522,"endHours":9.71816528771379,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:18","end":"07:36","startHours":7.306952053086988,"endHours":7.592725473487201,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:35","startHours":11.86146594071539,"endHours":12.575899491715923,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:26","end":"06:09","startHours":5.431563981710587,"endHours":6.145997532711121,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:58","end":"06:52","startHours":5.967389144960988,"endHours":6.860431083711655,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:43","startHours":14.004766593716992,"endHours":14.719200144717526,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:23","end":"17:47","startHours":17.37693434871966,"endHours":17.77693434871966,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:35","end":"18:01","startHours":17.57693434871966,"endHours":18.023455318094996,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:20","end":"19:05","startHours":17.32693434871966,"endHours":19.07693434871966,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:35","startHours":23.86146594071539,"endHours":24.575899491715923,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:52","end":"08:12","startHours":6.860431083711655,"endHours":8.199993991837655,"quality":"inauspicious"},{"name":"Udveg","start":"08:12","end":"09:32","startHours":8.199993991837655,"endHours":9.539556899963657,"quality":"inauspicious"},{"name":"Chala","start":"09:32","end":"10:53","startHours":9.539556899963657,"endHours":10.879119808089657,"quality":"neutral"},{"name":"Labha","start":"10:53","end":"12:13","startHours":10.879119808089657,"endHours":12.218682716215657,"quality":"auspicious"},{"name":"Amṛta","start":"12:13","end":"13:33","startHours":12.218682716215657,"endHours":13.558245624341659,"quality":"auspicious"},{"name":"Kāla","start":"13:33","end":"14:54","startHours":13.558245624341659,"endHours":14.897808532467659,"quality":"inauspicious"},{"name":"Śubha","start":"14:54","end":"16:14","startHours":14.897808532467659,"endHours":16.237371440593662,"quality":"auspicious"},{"name":"Roga","start":"16:14","end":"17:35","startHours":16.237371440593662,"endHours":17.57693434871966,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:35","end":"19:14","startHours":17.57693434871966,"endHours":19.23737144059366,"quality":"inauspicious"},{"name":"Śubha","start":"19:14","end":"20:54","startHours":19.23737144059366,"endHours":20.89780853246766,"quality":"auspicious"},{"name":"Roga","start":"20:54","end":"22:33","startHours":20.89780853246766,"endHours":22.55824562434166,"quality":"inauspicious"},{"name":"Udveg","start":"22:33","end":"00:13","startHours":22.55824562434166,"endHours":24.218682716215657,"quality":"inauspicious"},{"name":"Chala","start":"00:13","end":"01:53","startHours":24.218682716215657,"endHours":25.879119808089655,"quality":"neutral"},{"name":"Labha","start":"01:53","end":"03:32","startHours":25.879119808089655,"endHours":27.539556899963657,"quality":"auspicious"},{"name":"Amṛta","start":"03:32","end":"05:12","startHours":27.539556899963657,"endHours":29.199993991837655,"quality":"auspicious"},{"name":"Kāla","start":"05:12","end":"06:52","startHours":29.199993991837655,"endHours":30.860431083711653,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:52","end":"07:52","startHours":6.860431083711655,"endHours":7.860431083711655,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:52","end":"08:52","startHours":7.860431083711655,"endHours":8.860431083711655,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:52","end":"09:52","startHours":8.860431083711655,"endHours":9.860431083711655,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:52","end":"10:52","startHours":9.860431083711655,"endHours":10.860431083711655,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:52","end":"11:52","startHours":10.860431083711655,"endHours":11.860431083711655,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:52","end":"12:52","startHours":11.860431083711655,"endHours":12.860431083711655,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:52","end":"13:52","startHours":12.860431083711655,"endHours":13.860431083711655,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:52","end":"14:52","startHours":13.860431083711655,"endHours":14.860431083711655,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:52","end":"15:52","startHours":14.860431083711655,"endHours":15.860431083711655,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:52","end":"16:52","startHours":15.860431083711655,"endHours":16.860431083711653,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:52","end":"17:52","startHours":16.860431083711653,"endHours":17.860431083711653,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:52","end":"18:52","startHours":17.860431083711653,"endHours":18.860431083711653,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:52","end":"19:52","startHours":18.860431083711653,"endHours":19.860431083711653,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:52","end":"20:52","startHours":19.860431083711653,"endHours":20.860431083711653,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:52","end":"21:52","startHours":20.860431083711653,"endHours":21.860431083711653,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:52","end":"22:52","startHours":21.860431083711653,"endHours":22.860431083711653,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:52","end":"23:52","startHours":22.860431083711653,"endHours":23.860431083711653,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:52","end":"00:52","startHours":23.860431083711653,"endHours":24.860431083711653,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:52","end":"01:52","startHours":24.860431083711653,"endHours":25.860431083711653,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:52","end":"02:52","startHours":25.860431083711653,"endHours":26.860431083711653,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:52","end":"03:52","startHours":26.860431083711653,"endHours":27.860431083711653,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:52","end":"04:52","startHours":27.860431083711653,"endHours":28.860431083711653,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:52","end":"05:52","startHours":28.860431083711653,"endHours":29.860431083711653,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:52","end":"06:52","startHours":29.860431083711653,"endHours":30.860431083711653,"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":16.529837060473653,"eotMinutes":3.4370370270605552,"ayanamsa":23.5784}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Ṣaṣṭhī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"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 May 6, 1980 CE · Perth, Australia · Vidhyamitra","description":"May 6, 1980 CE for Perth, Australia: Kṛṣṇa Ṣaṣṭhī, sūryodaya 06:52, sūryāsta 17:35.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1980-05-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1980-05-06","sa":"https://sa.vidhyamitra.com/city/perth/1980-05-06","hi":"https://hi.vidhyamitra.com/city/perth/1980-05-06","x-default":"https://vidhyamitra.com/city/perth/1980-05-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:13:33.587Z","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":"2026-06-01T22:13:33.587Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:13:33.587Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}