{"id":"vidhyamitra:city-day:perth:2139-09-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2139-09-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2139-09-20","date_display":"September 20, 2139 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":2139,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502575.770833,"kali_year":5241,"ahargana":1914110.2708,"sun":{"sidereal_longitude":149.8989,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":113.8667,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":323.9678,"elapsed_within_tithi_degrees":11.9678},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":113.8667,"elapsed_within_degrees":7.2001},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.7656},"karana":{"half_tithi_index":53,"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":2139,"month":9,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2502575.770833,"ahargana":1914110.2708,"kali_year":5241,"ayanamsa_lahiri":25.8047,"grahas":{"sun":{"sidereal_longitude":150.97006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":115.98656,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false,"latitude":-0.9838},"mars":{"sidereal_longitude":105.50436000000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":175.31485999999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":274.66736000000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":167.86516000000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":284.4012600000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":281.2265,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":101.2265,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":2139,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502575.770833,"kali_year":5241,"ahargana":1914110.2708,"sun":{"sidereal_longitude":149.8989,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":113.8667,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":323.9678,"elapsed_within_tithi_degrees":11.9678},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":113.8667,"elapsed_within_degrees":7.2001},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.7656},"karana":{"half_tithi_index":53,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.984,"elongation":36.032},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.984,"opposition_distance":143.968}},"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":"06:08","sunsetLocal":"18:10","solarNoonLocal":"12:09","dayLengthHours":12.024283778976493,"dayLengthDisplay":"12 Hours 01 Mins 27 Secs","nightLengthDisplay":"11 Hours 58 Mins 33 Secs","moonriseLocal":"04:23","moonsetLocal":"15:16","rahuKala":{"name":"Rāhu Kāla","start":"16:40","end":"18:10","startHours":16.66262450442361,"endHours":18.165659976795673,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:09","end":"13:39","startHours":12.153518087307429,"endHours":13.656553559679491,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:10","end":"16:40","startHours":15.15958903205155,"endHours":16.66262450442361,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:57","end":"09:21","startHours":8.947042412913696,"endHours":9.347851872212914,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:39","end":"06:58","startHours":6.642388021943202,"endHours":6.963035589382575,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:33","startHours":11.752708628008211,"endHours":12.554327546606643,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:32","end":"05:20","startHours":4.538138360622316,"endHours":5.339757279220748,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:08","end":"06:08","startHours":5.139352549571141,"endHours":6.141376197819182,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:58","startHours":14.157565383803508,"endHours":14.95918430240194,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:58","end":"18:22","startHours":17.965659976795674,"endHours":18.365659976795673,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:10","end":"18:40","startHours":18.165659976795673,"endHours":18.666671800919694,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:55","end":"19:40","startHours":17.915659976795673,"endHours":19.665659976795673,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:33","startHours":23.752708628008207,"endHours":24.554327546606643,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:08","end":"07:39","startHours":6.141376197819182,"endHours":7.644411670191243,"quality":"inauspicious"},{"name":"Chala","start":"07:39","end":"09:09","startHours":7.644411670191243,"endHours":9.147447142563305,"quality":"neutral"},{"name":"Labha","start":"09:09","end":"10:39","startHours":9.147447142563305,"endHours":10.650482614935367,"quality":"auspicious"},{"name":"Amṛta","start":"10:39","end":"12:09","startHours":10.650482614935367,"endHours":12.153518087307429,"quality":"auspicious"},{"name":"Kāla","start":"12:09","end":"13:39","startHours":12.153518087307429,"endHours":13.656553559679491,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:10","startHours":13.656553559679491,"endHours":15.15958903205155,"quality":"auspicious"},{"name":"Roga","start":"15:10","end":"16:40","startHours":15.15958903205155,"endHours":16.66262450442361,"quality":"inauspicious"},{"name":"Udveg","start":"16:40","end":"18:10","startHours":16.66262450442361,"endHours":18.165659976795673,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:10","end":"19:40","startHours":18.165659976795673,"endHours":19.66262450442361,"quality":"auspicious"},{"name":"Roga","start":"19:40","end":"21:10","startHours":19.66262450442361,"endHours":21.15958903205155,"quality":"inauspicious"},{"name":"Udveg","start":"21:10","end":"22:39","startHours":21.15958903205155,"endHours":22.656553559679487,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:09","startHours":22.656553559679487,"endHours":24.153518087307425,"quality":"neutral"},{"name":"Labha","start":"00:09","end":"01:39","startHours":24.153518087307425,"endHours":25.650482614935363,"quality":"auspicious"},{"name":"Amṛta","start":"01:39","end":"03:09","startHours":25.650482614935363,"endHours":27.147447142563305,"quality":"auspicious"},{"name":"Kāla","start":"03:09","end":"04:39","startHours":27.147447142563305,"endHours":28.644411670191243,"quality":"inauspicious"},{"name":"Śubha","start":"04:39","end":"06:08","startHours":28.644411670191243,"endHours":30.14137619781918,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.141376197819182,"endHours":7.141376197819182,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.141376197819182,"endHours":8.14137619781918,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.14137619781918,"endHours":9.14137619781918,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.14137619781918,"endHours":10.14137619781918,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.14137619781918,"endHours":11.14137619781918,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.14137619781918,"endHours":12.14137619781918,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.14137619781918,"endHours":13.14137619781918,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.14137619781918,"endHours":14.14137619781918,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.14137619781918,"endHours":15.14137619781918,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.14137619781918,"endHours":16.14137619781918,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.14137619781918,"endHours":17.14137619781918,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.14137619781918,"endHours":18.14137619781918,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.14137619781918,"endHours":19.14137619781918,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.14137619781918,"endHours":20.14137619781918,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.14137619781918,"endHours":21.14137619781918,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.14137619781918,"endHours":22.14137619781918,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.14137619781918,"endHours":23.14137619781918,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.14137619781918,"endHours":24.14137619781918,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.14137619781918,"endHours":25.14137619781918,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.14137619781918,"endHours":26.14137619781918,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.14137619781918,"endHours":27.14137619781918,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.14137619781918,"endHours":28.14137619781918,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.14137619781918,"endHours":29.14137619781918,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.14137619781918,"endHours":30.14137619781918,"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"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":1.282212316940254,"eotMinutes":7.346914761554353,"ayanamsa":25.8047}},"calendars":{"vikram_samvat":2196,"vikram_samvatsara":"Paridhāvi","saka_samvat":2061,"saka_samvatsara":"Vikāri","bengali_samvat":1546,"malayalam_era":1315,"nanakshahi_year":670,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Dvādaśī · Vikram 2196 Paridhāvi · Śaka 2061 Vikāri"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4}],"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 20, 2139 CE · Perth, Australia · Vidhyamitra","description":"September 20, 2139 CE for Perth, Australia: Kṛṣṇa Dvādaśī, sūryodaya 06:08, sūryāsta 18:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2139-09-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2139-09-20","sa":"https://sa.vidhyamitra.com/city/perth/2139-09-20","hi":"https://hi.vidhyamitra.com/city/perth/2139-09-20","x-default":"https://vidhyamitra.com/city/perth/2139-09-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-26T19:12:22.760Z","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":"2026-05-26T19:12:22.760Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-26T19:12:22.760Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}