{"id":"vidhyamitra:city-day:perth:1966-10-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1966-10-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1966-10-16","date_display":"October 16, 1966 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":1966,"month":10,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439414.770833,"kali_year":5068,"ahargana":1850949.2708,"sun":{"sidereal_longitude":178.1899,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":203.7643,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.5744,"elapsed_within_tithi_degrees":1.5744},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.7643,"elapsed_within_degrees":3.7643},"yoga":{"number":2,"name":"Prīti","sum_longitude":21.9542},"karana":{"half_tithi_index":4,"name":"Taitila"},"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":1966,"month":10,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2439414.770833,"ahargana":1850949.2708,"kali_year":5068,"ayanamsa_lahiri":23.3891,"grahas":{"sun":{"sidereal_longitude":178.84207400000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":204.68987400000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":0.3164},"mars":{"sidereal_longitude":129.044374,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":201.29627400000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":99.55557399999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"venus":{"sidereal_longitude":173.197274,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":331.62997399999995,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":27.8002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":207.8002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"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":1966,"month":10,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439414.770833,"kali_year":5068,"ahargana":1850949.2708,"sun":{"sidereal_longitude":178.1899,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":203.7643,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.5744,"elapsed_within_tithi_degrees":1.5744},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.7643,"elapsed_within_degrees":3.7643},"yoga":{"number":2,"name":"Prīti","sum_longitude":21.9542},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.316,"elongation":25.574},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.316,"opposition_distance":154.426}},"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":"05:36","sunsetLocal":"18:27","solarNoonLocal":"12:02","dayLengthHours":12.859427582939567,"dayLengthDisplay":"12 Hours 51 Mins 34 Secs","nightLengthDisplay":"11 Hours 08 Mins 26 Secs","moonriseLocal":"06:57","moonsetLocal":"20:32","rahuKala":{"name":"Rāhu Kāla","start":"16:51","end":"18:27","startHours":16.84745651741599,"endHours":18.454884965283433,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:02","end":"13:38","startHours":12.02517117381365,"endHours":13.632599621681095,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:14","end":"16:51","startHours":15.240028069548542,"endHours":16.84745651741599,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:01","startHours":8.595990485029766,"endHours":9.02463807112775,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:08","end":"06:28","startHours":6.131266864966348,"endHours":6.474184933844737,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.596523587715664,"endHours":12.453818759911636,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:44","startHours":3.880867037951924,"endHours":4.7381622101478955,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:31","end":"05:36","startHours":4.5238384170989026,"endHours":5.5954573823438665,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:02","startHours":14.168409104303578,"endHours":15.02570427649955,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.254884965283434,"endHours":18.654884965283433,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:59","startHours":18.454884965283433,"endHours":18.990694447905916,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.204884965283433,"endHours":19.954884965283433,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.596523587715666,"endHours":24.453818759911634,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:36","end":"07:12","startHours":5.5954573823438665,"endHours":7.202885830211312,"quality":"inauspicious"},{"name":"Chala","start":"07:12","end":"08:49","startHours":7.202885830211312,"endHours":8.810314278078758,"quality":"neutral"},{"name":"Labha","start":"08:49","end":"10:25","startHours":8.810314278078758,"endHours":10.417742725946205,"quality":"auspicious"},{"name":"Amṛta","start":"10:25","end":"12:02","startHours":10.417742725946205,"endHours":12.02517117381365,"quality":"auspicious"},{"name":"Kāla","start":"12:02","end":"13:38","startHours":12.02517117381365,"endHours":13.632599621681095,"quality":"inauspicious"},{"name":"Śubha","start":"13:38","end":"15:14","startHours":13.632599621681095,"endHours":15.240028069548542,"quality":"auspicious"},{"name":"Roga","start":"15:14","end":"16:51","startHours":15.240028069548542,"endHours":16.84745651741599,"quality":"inauspicious"},{"name":"Udveg","start":"16:51","end":"18:27","startHours":16.84745651741599,"endHours":18.454884965283433,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:27","end":"19:51","startHours":18.454884965283433,"endHours":19.84745651741599,"quality":"auspicious"},{"name":"Roga","start":"19:51","end":"21:14","startHours":19.84745651741599,"endHours":21.240028069548543,"quality":"inauspicious"},{"name":"Udveg","start":"21:14","end":"22:38","startHours":21.240028069548543,"endHours":22.632599621681095,"quality":"inauspicious"},{"name":"Chala","start":"22:38","end":"00:02","startHours":22.632599621681095,"endHours":24.02517117381365,"quality":"neutral"},{"name":"Labha","start":"00:02","end":"01:25","startHours":24.02517117381365,"endHours":25.417742725946205,"quality":"auspicious"},{"name":"Amṛta","start":"01:25","end":"02:49","startHours":25.417742725946205,"endHours":26.810314278078756,"quality":"auspicious"},{"name":"Kāla","start":"02:49","end":"04:12","startHours":26.810314278078756,"endHours":28.20288583021131,"quality":"inauspicious"},{"name":"Śubha","start":"04:12","end":"05:36","startHours":28.20288583021131,"endHours":29.595457382343866,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:36","end":"06:36","startHours":5.5954573823438665,"endHours":6.5954573823438665,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:36","end":"07:36","startHours":6.5954573823438665,"endHours":7.5954573823438665,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:36","end":"08:36","startHours":7.5954573823438665,"endHours":8.595457382343866,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:36","end":"09:36","startHours":8.595457382343866,"endHours":9.595457382343866,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:36","end":"10:36","startHours":9.595457382343866,"endHours":10.595457382343866,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:36","end":"11:36","startHours":10.595457382343866,"endHours":11.595457382343866,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:36","end":"12:36","startHours":11.595457382343866,"endHours":12.595457382343866,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:36","end":"13:36","startHours":12.595457382343866,"endHours":13.595457382343866,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:36","end":"14:36","startHours":13.595457382343866,"endHours":14.595457382343866,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:36","end":"15:36","startHours":14.595457382343866,"endHours":15.595457382343866,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:36","end":"16:36","startHours":15.595457382343866,"endHours":16.595457382343866,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:36","end":"17:36","startHours":16.595457382343866,"endHours":17.595457382343866,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:36","end":"18:36","startHours":17.595457382343866,"endHours":18.595457382343866,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:36","end":"19:36","startHours":18.595457382343866,"endHours":19.595457382343866,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:36","end":"20:36","startHours":19.595457382343866,"endHours":20.595457382343866,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:36","end":"21:36","startHours":20.595457382343866,"endHours":21.595457382343866,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:36","end":"22:36","startHours":21.595457382343866,"endHours":22.595457382343866,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:36","end":"23:36","startHours":22.595457382343866,"endHours":23.595457382343866,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:36","end":"00:36","startHours":23.595457382343866,"endHours":24.595457382343866,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:36","end":"01:36","startHours":24.595457382343866,"endHours":25.595457382343866,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:36","end":"02:36","startHours":25.595457382343866,"endHours":26.595457382343866,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:36","end":"03:36","startHours":26.595457382343866,"endHours":27.595457382343866,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:36","end":"04:36","startHours":27.595457382343866,"endHours":28.595457382343866,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:36","end":"05:36","startHours":28.595457382343866,"endHours":29.595457382343866,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-8.65473754847367,"eotMinutes":15.04772957118102,"ayanamsa":23.3891}},"calendars":{"vikram_samvat":2023,"vikram_samvatsara":"Siddhārthī","saka_samvat":1888,"saka_samvatsara":"Parābhava","bengali_samvat":1373,"malayalam_era":1142,"nanakshahi_year":497,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Tṛtīyā · Vikram 2023 Siddhārthī · Śaka 1888 Parābhava"},"festivals":[],"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 October 16, 1966 CE · Perth, Australia · Vidhyamitra","description":"October 16, 1966 CE for Perth, Australia: Śukla Tṛtīyā, sūryodaya 05:36, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1966-10-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1966-10-16","sa":"https://sa.vidhyamitra.com/city/perth/1966-10-16","hi":"https://hi.vidhyamitra.com/city/perth/1966-10-16","x-default":"https://vidhyamitra.com/city/perth/1966-10-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T01:55:20.269Z","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":"2026-06-03T01:55:20.269Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T01:55:20.269Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}