{"id":"vidhyamitra:city-day:perth:2030-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2030-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2030-10-20","date_display":"October 20, 2030 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":2030,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462794.770833,"kali_year":5132,"ahargana":1874329.2708,"sun":{"sidereal_longitude":181.6116,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":99.2852,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.6737,"elapsed_within_tithi_degrees":1.6737},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":99.2852,"elapsed_within_degrees":5.9519},"yoga":{"number":22,"name":"Sādhya","sum_longitude":280.8968},"karana":{"half_tithi_index":46,"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":2030,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462794.770833,"ahargana":1874329.2708,"kali_year":5132,"ayanamsa_lahiri":24.2833,"grahas":{"sun":{"sidereal_longitude":182.41028600000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":97.028686,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":-3.4593},"mars":{"sidereal_longitude":136.07108600000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":187.36528599999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":215.20558600000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":181.895486,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":43.770286,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":229.0153,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":49.0153,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2030,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462794.770833,"kali_year":5132,"ahargana":1874329.2708,"sun":{"sidereal_longitude":181.6116,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":99.2852,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":277.6737,"elapsed_within_tithi_degrees":1.6737},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":99.2852,"elapsed_within_degrees":5.9519},"yoga":{"number":22,"name":"Sādhya","sum_longitude":280.8968},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.459,"elongation":82.326},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.459,"opposition_distance":97.674}},"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":"05:31","sunsetLocal":"18:31","solarNoonLocal":"12:01","dayLengthHours":13.00108129927738,"dayLengthDisplay":"13 Hours 00 Mins 04 Secs","nightLengthDisplay":"10 Hours 59 Mins 56 Secs","moonriseLocal":"01:08","moonsetLocal":"11:30","rahuKala":{"name":"Rāhu Kāla","start":"16:53","end":"18:31","startHours":16.889757633158496,"endHours":18.51489279556817,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:01","end":"13:38","startHours":12.014352145929479,"endHours":13.639487308339152,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:16","end":"16:53","startHours":15.264622470748824,"endHours":16.889757633158496,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:59","startHours":8.547397132788845,"endHours":8.980766509431422,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:24","startHours":6.055523217094013,"endHours":6.4022187184080765,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.5809827692869,"endHours":12.447721522572058,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:47","end":"04:39","startHours":3.780333989720471,"endHours":4.64707274300563,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:26","end":"05:31","startHours":4.43038805468434,"endHours":5.5138114962907885,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:03","startHours":14.181199029142375,"endHours":15.047937782427534,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.31489279556817,"endHours":18.71489279556817,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:03","startHours":18.51489279556817,"endHours":19.056604516371394,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.26489279556817,"endHours":20.01489279556817,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.580982769286898,"endHours":24.44772152257206,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:31","end":"07:08","startHours":5.5138114962907885,"endHours":7.138946658700461,"quality":"inauspicious"},{"name":"Chala","start":"07:08","end":"08:46","startHours":7.138946658700461,"endHours":8.764081821110134,"quality":"neutral"},{"name":"Labha","start":"08:46","end":"10:23","startHours":8.764081821110134,"endHours":10.389216983519805,"quality":"auspicious"},{"name":"Amṛta","start":"10:23","end":"12:01","startHours":10.389216983519805,"endHours":12.014352145929479,"quality":"auspicious"},{"name":"Kāla","start":"12:01","end":"13:38","startHours":12.014352145929479,"endHours":13.639487308339152,"quality":"inauspicious"},{"name":"Śubha","start":"13:38","end":"15:16","startHours":13.639487308339152,"endHours":15.264622470748824,"quality":"auspicious"},{"name":"Roga","start":"15:16","end":"16:53","startHours":15.264622470748824,"endHours":16.889757633158496,"quality":"inauspicious"},{"name":"Udveg","start":"16:53","end":"18:31","startHours":16.889757633158496,"endHours":18.51489279556817,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:31","end":"19:53","startHours":18.51489279556817,"endHours":19.889757633158496,"quality":"auspicious"},{"name":"Roga","start":"19:53","end":"21:16","startHours":19.889757633158496,"endHours":21.264622470748826,"quality":"inauspicious"},{"name":"Udveg","start":"21:16","end":"22:38","startHours":21.264622470748826,"endHours":22.639487308339152,"quality":"inauspicious"},{"name":"Chala","start":"22:38","end":"00:01","startHours":22.639487308339152,"endHours":24.01435214592948,"quality":"neutral"},{"name":"Labha","start":"00:01","end":"01:23","startHours":24.01435214592948,"endHours":25.389216983519805,"quality":"auspicious"},{"name":"Amṛta","start":"01:23","end":"02:46","startHours":25.389216983519805,"endHours":26.764081821110132,"quality":"auspicious"},{"name":"Kāla","start":"02:46","end":"04:08","startHours":26.764081821110132,"endHours":28.138946658700462,"quality":"inauspicious"},{"name":"Śubha","start":"04:08","end":"05:31","startHours":28.138946658700462,"endHours":29.51381149629079,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.5138114962907885,"endHours":6.5138114962907885,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.5138114962907885,"endHours":7.5138114962907885,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.5138114962907885,"endHours":8.513811496290788,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.513811496290788,"endHours":9.513811496290788,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.513811496290788,"endHours":10.513811496290788,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.513811496290788,"endHours":11.513811496290788,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.513811496290788,"endHours":12.513811496290788,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.513811496290788,"endHours":13.513811496290788,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.513811496290788,"endHours":14.513811496290788,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.513811496290788,"endHours":15.513811496290788,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.513811496290788,"endHours":16.51381149629079,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.51381149629079,"endHours":17.51381149629079,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.51381149629079,"endHours":18.51381149629079,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.51381149629079,"endHours":19.51381149629079,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.51381149629079,"endHours":20.51381149629079,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.51381149629079,"endHours":21.51381149629079,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.51381149629079,"endHours":22.51381149629079,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.51381149629079,"endHours":23.51381149629079,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.51381149629079,"endHours":24.51381149629079,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.51381149629079,"endHours":25.51381149629079,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.51381149629079,"endHours":26.51381149629079,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.51381149629079,"endHours":27.51381149629079,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.51381149629079,"endHours":28.51381149629079,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.51381149629079,"endHours":29.51381149629079,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.292240861338346,"eotMinutes":15.696871244231174,"ayanamsa":24.2833}},"calendars":{"vikram_samvat":2087,"vikram_samvatsara":"Rudhirodgāri","saka_samvat":1952,"saka_samvatsara":"Sādhāraṇa","bengali_samvat":1437,"malayalam_era":1206,"nanakshahi_year":561,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Navamī · Vikram 2087 Rudhirodgāri · Śaka 1952 Sādhāraṇa"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"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 October 20, 2030 CE · Perth, Australia · Vidhyamitra","description":"October 20, 2030 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 05:31, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2030-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2030-10-20","sa":"https://sa.vidhyamitra.com/city/perth/2030-10-20","hi":"https://hi.vidhyamitra.com/city/perth/2030-10-20","x-default":"https://vidhyamitra.com/city/perth/2030-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T01:42:24.050Z","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":"2026-05-15T01:42:24.050Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T01:42:24.050Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}