{"id":"vidhyamitra:city-day:perth:1990-09-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1990-09-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-09-16","date_display":"September 16, 1990 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":1990,"month":9,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448150.770833,"kali_year":5092,"ahargana":1859685.2708,"sun":{"sidereal_longitude":148.4922,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":112.6648,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.1726,"elapsed_within_tithi_degrees":0.1726},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2,"moon_longitude":112.6648,"elapsed_within_degrees":5.9981},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.157},"karana":{"half_tithi_index":54,"name":"Gara"},"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":1990,"month":9,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2448150.770833,"ahargana":1859685.2708,"kali_year":5092,"ayanamsa_lahiri":23.7232,"grahas":{"sun":{"sidereal_longitude":149.19829500000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":112.82439499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false,"latitude":-0.6054},"mars":{"sidereal_longitude":43.35429499999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":136.264095,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":101.98949500000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"venus":{"sidereal_longitude":137.19919500000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":264.8440949999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":284.9249,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":104.9249,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":1990,"month":9,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448150.770833,"kali_year":5092,"ahargana":1859685.2708,"sun":{"sidereal_longitude":148.4922,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":112.6648,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":324.1726,"elapsed_within_tithi_degrees":0.1726},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2,"moon_longitude":112.6648,"elapsed_within_degrees":5.9981},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.157},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.605,"elongation":35.827},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.605,"opposition_distance":144.173}},"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":"06:14","sunsetLocal":"18:08","solarNoonLocal":"12:11","dayLengthHours":11.89724782274773,"dayLengthDisplay":"11 Hours 53 Mins 50 Secs","nightLengthDisplay":"12 Hours 06 Mins 10 Secs","moonriseLocal":"04:23","moonsetLocal":"15:07","rahuKala":{"name":"Rāhu Kāla","start":"16:38","end":"18:08","startHours":16.63962941635159,"endHours":18.126785394195053,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:11","end":"13:40","startHours":12.178161482821189,"endHours":13.665317460664657,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:09","end":"16:38","startHours":15.152473438508121,"endHours":16.63962941635159,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:24","startHours":9.005562063421795,"endHours":9.402136990846719,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:44","end":"07:03","startHours":6.72525623072848,"endHours":7.042516172668419,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:34","startHours":11.781586555396265,"endHours":12.574736410246112,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:39","end":"05:26","startHours":4.643237861747627,"endHours":5.436387716597476,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:14","end":"06:14","startHours":5.238100252885014,"endHours":6.229537571447325,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:57","startHours":14.161036119945813,"endHours":14.954185974795662,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.926785394195054,"endHours":18.326785394195053,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:37","startHours":18.126785394195053,"endHours":18.62250405347621,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.876785394195053,"endHours":19.626785394195053,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:34","startHours":23.781586555396263,"endHours":24.574736410246114,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:14","end":"07:43","startHours":6.229537571447325,"endHours":7.716693549290791,"quality":"inauspicious"},{"name":"Chala","start":"07:43","end":"09:12","startHours":7.716693549290791,"endHours":9.203849527134256,"quality":"neutral"},{"name":"Labha","start":"09:12","end":"10:41","startHours":9.203849527134256,"endHours":10.691005504977724,"quality":"auspicious"},{"name":"Amṛta","start":"10:41","end":"12:11","startHours":10.691005504977724,"endHours":12.178161482821189,"quality":"auspicious"},{"name":"Kāla","start":"12:11","end":"13:40","startHours":12.178161482821189,"endHours":13.665317460664657,"quality":"inauspicious"},{"name":"Śubha","start":"13:40","end":"15:09","startHours":13.665317460664657,"endHours":15.152473438508121,"quality":"auspicious"},{"name":"Roga","start":"15:09","end":"16:38","startHours":15.152473438508121,"endHours":16.63962941635159,"quality":"inauspicious"},{"name":"Udveg","start":"16:38","end":"18:08","startHours":16.63962941635159,"endHours":18.126785394195053,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:08","end":"19:38","startHours":18.126785394195053,"endHours":19.63962941635159,"quality":"auspicious"},{"name":"Roga","start":"19:38","end":"21:09","startHours":19.63962941635159,"endHours":21.15247343850812,"quality":"inauspicious"},{"name":"Udveg","start":"21:09","end":"22:40","startHours":21.15247343850812,"endHours":22.665317460664653,"quality":"inauspicious"},{"name":"Chala","start":"22:40","end":"00:11","startHours":22.665317460664653,"endHours":24.17816148282119,"quality":"neutral"},{"name":"Labha","start":"00:11","end":"01:41","startHours":24.17816148282119,"endHours":25.691005504977724,"quality":"auspicious"},{"name":"Amṛta","start":"01:41","end":"03:12","startHours":25.691005504977724,"endHours":27.203849527134256,"quality":"auspicious"},{"name":"Kāla","start":"03:12","end":"04:43","startHours":27.203849527134256,"endHours":28.716693549290788,"quality":"inauspicious"},{"name":"Śubha","start":"04:43","end":"06:14","startHours":28.716693549290788,"endHours":30.229537571447324,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:14","end":"07:14","startHours":6.229537571447325,"endHours":7.229537571447325,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:14","end":"08:14","startHours":7.229537571447325,"endHours":8.229537571447324,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:14","end":"09:14","startHours":8.229537571447324,"endHours":9.229537571447324,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:14","end":"10:14","startHours":9.229537571447324,"endHours":10.229537571447324,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:14","end":"11:14","startHours":10.229537571447324,"endHours":11.229537571447324,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:14","end":"12:14","startHours":11.229537571447324,"endHours":12.229537571447324,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:14","end":"13:14","startHours":12.229537571447324,"endHours":13.229537571447324,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:14","end":"14:14","startHours":13.229537571447324,"endHours":14.229537571447324,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:14","end":"15:14","startHours":14.229537571447324,"endHours":15.229537571447324,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:14","end":"16:14","startHours":15.229537571447324,"endHours":16.229537571447324,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:14","end":"17:14","startHours":16.229537571447324,"endHours":17.229537571447324,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:14","end":"18:14","startHours":17.229537571447324,"endHours":18.229537571447324,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:14","end":"19:14","startHours":18.229537571447324,"endHours":19.229537571447324,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:14","end":"20:14","startHours":19.229537571447324,"endHours":20.229537571447324,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:14","end":"21:14","startHours":20.229537571447324,"endHours":21.229537571447324,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:14","end":"22:14","startHours":21.229537571447324,"endHours":22.229537571447324,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:14","end":"23:14","startHours":22.229537571447324,"endHours":23.229537571447324,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:14","end":"00:14","startHours":23.229537571447324,"endHours":24.229537571447324,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:14","end":"01:14","startHours":24.229537571447324,"endHours":25.229537571447324,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:14","end":"02:14","startHours":25.229537571447324,"endHours":26.229537571447324,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:14","end":"03:14","startHours":26.229537571447324,"endHours":27.229537571447324,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:14","end":"04:14","startHours":27.229537571447324,"endHours":28.229537571447324,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:14","end":"05:14","startHours":28.229537571447324,"endHours":29.229537571447324,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:14","end":"06:14","startHours":29.229537571447324,"endHours":30.229537571447324,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"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":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":2.8093204535274854,"eotMinutes":5.868311030728706,"ayanamsa":23.7232}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Trayodaśī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":[]},"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 September 16, 1990 CE · Perth, Australia · Vidhyamitra","description":"September 16, 1990 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 06:14, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1990-09-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1990-09-16","sa":"https://sa.vidhyamitra.com/city/perth/1990-09-16","hi":"https://hi.vidhyamitra.com/city/perth/1990-09-16","x-default":"https://vidhyamitra.com/city/perth/1990-09-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:23:49.270Z","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":"2026-06-01T22:23:49.270Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:23:49.270Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}