{"id":"vidhyamitra:city-day:perth:1987-08-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1987-08-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-08-22","date_display":"August 22, 1987 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":1987,"month":8,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447029.770833,"kali_year":5089,"ahargana":1858564.2708,"sun":{"sidereal_longitude":124.1418,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":96.0383,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.8966,"elapsed_within_tithi_degrees":7.8966},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":96.0383,"elapsed_within_degrees":2.705},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":220.1801},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1987,"month":8,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447029.770833,"ahargana":1858564.2708,"kali_year":5089,"ayanamsa_lahiri":23.6803,"grahas":{"sun":{"sidereal_longitude":124.756325,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":97.82442500000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":4.18},"mars":{"sidereal_longitude":126.00312500000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":126.78092500000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":6.7594250000000216,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":124.61812500000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":230.54432500000007,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":344.3209,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":164.3209,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"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":1987,"month":8,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447029.770833,"kali_year":5089,"ahargana":1858564.2708,"sun":{"sidereal_longitude":124.1418,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":96.0383,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.8966,"elapsed_within_tithi_degrees":7.8966},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":96.0383,"elapsed_within_degrees":2.705},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":220.1801},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.18,"elongation":28.103},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.18,"opposition_distance":151.897}},"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":"06:46","sunsetLocal":"17:53","solarNoonLocal":"12:19","dayLengthHours":11.117728407347201,"dayLengthDisplay":"11 Hours 07 Mins 04 Secs","nightLengthDisplay":"12 Hours 52 Mins 56 Secs","moonriseLocal":"05:20","moonsetLocal":"15:42","rahuKala":{"name":"Rāhu Kāla","start":"09:32","end":"10:56","startHours":9.538823502560671,"endHours":10.92853955347907,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:42","end":"15:06","startHours":13.70797165531587,"endHours":15.097687706234272,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:46","end":"08:09","startHours":6.75939140072387,"endHours":8.14910745164227,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:43","startHours":9.353528029104883,"endHours":9.724118976016456,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:31","startHours":7.222630084363336,"endHours":7.519102841892595,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:41","startHours":11.947664657485898,"endHours":12.688846551309044,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:17","end":"06:01","startHours":5.277027613077577,"endHours":6.018209506900723,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:50","end":"06:46","startHours":5.832914033444936,"endHours":6.75939140072387,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:55","startHours":14.171210338955337,"endHours":14.912392232778483,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:41","end":"18:05","startHours":17.677119808071073,"endHours":18.07711980807107,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:53","end":"18:20","startHours":17.877119808071072,"endHours":18.34035849171054,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:38","end":"19:23","startHours":17.627119808071072,"endHours":19.377119808071072,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:41","startHours":23.9476646574859,"endHours":24.688846551309044,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:46","end":"08:09","startHours":6.75939140072387,"endHours":8.14910745164227,"quality":"inauspicious"},{"name":"Śubha","start":"08:09","end":"09:32","startHours":8.14910745164227,"endHours":9.538823502560671,"quality":"auspicious"},{"name":"Roga","start":"09:32","end":"10:56","startHours":9.538823502560671,"endHours":10.92853955347907,"quality":"inauspicious"},{"name":"Udveg","start":"10:56","end":"12:19","startHours":10.92853955347907,"endHours":12.318255604397471,"quality":"inauspicious"},{"name":"Chala","start":"12:19","end":"13:42","startHours":12.318255604397471,"endHours":13.70797165531587,"quality":"neutral"},{"name":"Labha","start":"13:42","end":"15:06","startHours":13.70797165531587,"endHours":15.097687706234272,"quality":"auspicious"},{"name":"Amṛta","start":"15:06","end":"16:29","startHours":15.097687706234272,"endHours":16.48740375715267,"quality":"auspicious"},{"name":"Kāla","start":"16:29","end":"17:53","startHours":16.48740375715267,"endHours":17.877119808071072,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:53","end":"19:29","startHours":17.877119808071072,"endHours":19.48740375715267,"quality":"auspicious"},{"name":"Amṛta","start":"19:29","end":"21:06","startHours":19.48740375715267,"endHours":21.09768770623427,"quality":"auspicious"},{"name":"Kāla","start":"21:06","end":"22:42","startHours":21.09768770623427,"endHours":22.707971655315873,"quality":"inauspicious"},{"name":"Śubha","start":"22:42","end":"00:19","startHours":22.707971655315873,"endHours":24.31825560439747,"quality":"auspicious"},{"name":"Roga","start":"00:19","end":"01:56","startHours":24.31825560439747,"endHours":25.92853955347907,"quality":"inauspicious"},{"name":"Udveg","start":"01:56","end":"03:32","startHours":25.92853955347907,"endHours":27.53882350256067,"quality":"inauspicious"},{"name":"Chala","start":"03:32","end":"05:09","startHours":27.53882350256067,"endHours":29.149107451642273,"quality":"neutral"},{"name":"Labha","start":"05:09","end":"06:46","startHours":29.149107451642273,"endHours":30.75939140072387,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:46","end":"07:46","startHours":6.75939140072387,"endHours":7.75939140072387,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:46","end":"08:46","startHours":7.75939140072387,"endHours":8.759391400723871,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:46","end":"09:46","startHours":8.759391400723871,"endHours":9.759391400723871,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:46","end":"10:46","startHours":9.759391400723871,"endHours":10.759391400723871,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:46","end":"11:46","startHours":10.759391400723871,"endHours":11.759391400723871,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:46","end":"12:46","startHours":11.759391400723871,"endHours":12.759391400723871,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:46","end":"13:46","startHours":12.759391400723871,"endHours":13.759391400723871,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:46","end":"14:46","startHours":13.759391400723871,"endHours":14.759391400723871,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:46","end":"15:46","startHours":14.759391400723871,"endHours":15.759391400723871,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:46","end":"16:46","startHours":15.759391400723871,"endHours":16.75939140072387,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:46","end":"17:46","startHours":16.75939140072387,"endHours":17.75939140072387,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:46","end":"18:46","startHours":17.75939140072387,"endHours":18.75939140072387,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:46","end":"19:46","startHours":18.75939140072387,"endHours":19.75939140072387,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:46","end":"20:46","startHours":19.75939140072387,"endHours":20.75939140072387,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:46","end":"21:46","startHours":20.75939140072387,"endHours":21.75939140072387,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:46","end":"22:46","startHours":21.75939140072387,"endHours":22.75939140072387,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:46","end":"23:46","startHours":22.75939140072387,"endHours":23.75939140072387,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:46","end":"00:46","startHours":23.75939140072387,"endHours":24.75939140072387,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:46","end":"01:46","startHours":24.75939140072387,"endHours":25.75939140072387,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:46","end":"02:46","startHours":25.75939140072387,"endHours":26.75939140072387,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:46","end":"03:46","startHours":26.75939140072387,"endHours":27.75939140072387,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:46","end":"04:46","startHours":27.75939140072387,"endHours":28.75939140072387,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:46","end":"05:46","startHours":28.75939140072387,"endHours":29.75939140072387,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:46","end":"06:46","startHours":29.75939140072387,"endHours":30.75939140072387,"planetary_lord":"Mercury"}],"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":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":12.016280258388369,"eotMinutes":-2.537336263848294,"ayanamsa":23.6803}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Trayodaśī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"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":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 August 22, 1987 CE · Perth, Australia · Vidhyamitra","description":"August 22, 1987 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 06:46, sūryāsta 17:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1987-08-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1987-08-22","sa":"https://sa.vidhyamitra.com/city/perth/1987-08-22","hi":"https://hi.vidhyamitra.com/city/perth/1987-08-22","x-default":"https://vidhyamitra.com/city/perth/1987-08-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T12:09:20.675Z","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":"2026-06-01T12:09:20.675Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T12:09:20.675Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}