{"id":"vidhyamitra:city-day:perth:2170-09-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2170-09-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2170-09-16","date_display":"September 16, 2170 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":2170,"month":9,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513894.770833,"kali_year":5272,"ahargana":1925429.2708,"sun":{"sidereal_longitude":145.9881,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":217.0546,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":71.0665,"elapsed_within_tithi_degrees":11.0665},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.0546,"elapsed_within_degrees":3.7213},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":3.0428},"karana":{"half_tithi_index":11,"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":2170,"month":9,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2513894.770833,"ahargana":1925429.2708,"kali_year":5272,"ayanamsa_lahiri":26.2376,"grahas":{"sun":{"sidereal_longitude":147.126891,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":221.37359100000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false,"latitude":0.3478},"mars":{"sidereal_longitude":198.79029100000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":150.31589099999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":149.541291,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":138.02759100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":303.5153909999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":41.4914,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":221.4914,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":2170,"month":9,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2513894.770833,"kali_year":5272,"ahargana":1925429.2708,"sun":{"sidereal_longitude":145.9881,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":217.0546,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":71.0665,"elapsed_within_tithi_degrees":11.0665},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.0546,"elapsed_within_degrees":3.7213},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":3.0428},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.348,"elongation":71.067},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.348,"opposition_distance":108.933}},"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":"06:13","sunsetLocal":"18:08","solarNoonLocal":"12:11","dayLengthHours":11.911825993370805,"dayLengthDisplay":"11 Hours 54 Mins 43 Secs","nightLengthDisplay":"12 Hours 05 Mins 17 Secs","moonriseLocal":"10:08","moonsetLocal":"00:08","rahuKala":{"name":"Rāhu Kāla","start":"16:39","end":"18:08","startHours":16.64509623033524,"endHours":18.13407447950659,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:11","end":"13:40","startHours":12.178161482821189,"endHours":13.667139731992538,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:09","end":"16:39","startHours":15.156117981163888,"endHours":16.64509623033524,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:24","startHours":9.00167455125564,"endHours":9.398735417701333,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:43","end":"07:02","startHours":6.718574569192902,"endHours":7.0362232623494565,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:35","startHours":11.781100616375495,"endHours":12.575222349266882,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:38","end":"05:26","startHours":4.634005020353012,"endHours":5.428126753244398,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:14","end":"06:13","startHours":5.229596320021551,"endHours":6.222248486135785,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:57","startHours":14.163465815049655,"endHours":14.957587547941042,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.93407447950659,"endHours":18.33407447950659,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:38","startHours":18.13407447950659,"endHours":18.630400562563707,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.88407447950659,"endHours":19.63407447950659,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:35","startHours":23.781100616375497,"endHours":24.57522234926688,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:13","end":"07:43","startHours":6.222248486135785,"endHours":7.711226735307136,"quality":"inauspicious"},{"name":"Chala","start":"07:43","end":"09:12","startHours":7.711226735307136,"endHours":9.200204984478486,"quality":"neutral"},{"name":"Labha","start":"09:12","end":"10:41","startHours":9.200204984478486,"endHours":10.689183233649837,"quality":"auspicious"},{"name":"Amṛta","start":"10:41","end":"12:11","startHours":10.689183233649837,"endHours":12.178161482821189,"quality":"auspicious"},{"name":"Kāla","start":"12:11","end":"13:40","startHours":12.178161482821189,"endHours":13.667139731992538,"quality":"inauspicious"},{"name":"Śubha","start":"13:40","end":"15:09","startHours":13.667139731992538,"endHours":15.156117981163888,"quality":"auspicious"},{"name":"Roga","start":"15:09","end":"16:39","startHours":15.156117981163888,"endHours":16.64509623033524,"quality":"inauspicious"},{"name":"Udveg","start":"16:39","end":"18:08","startHours":16.64509623033524,"endHours":18.13407447950659,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:08","end":"19:39","startHours":18.13407447950659,"endHours":19.64509623033524,"quality":"auspicious"},{"name":"Roga","start":"19:39","end":"21:09","startHours":19.64509623033524,"endHours":21.156117981163888,"quality":"inauspicious"},{"name":"Udveg","start":"21:09","end":"22:40","startHours":21.156117981163888,"endHours":22.66713973199254,"quality":"inauspicious"},{"name":"Chala","start":"22:40","end":"00:11","startHours":22.66713973199254,"endHours":24.17816148282119,"quality":"neutral"},{"name":"Labha","start":"00:11","end":"01:41","startHours":24.17816148282119,"endHours":25.68918323364984,"quality":"auspicious"},{"name":"Amṛta","start":"01:41","end":"03:12","startHours":25.68918323364984,"endHours":27.20020498447849,"quality":"auspicious"},{"name":"Kāla","start":"03:12","end":"04:43","startHours":27.20020498447849,"endHours":28.711226735307136,"quality":"inauspicious"},{"name":"Śubha","start":"04:43","end":"06:13","startHours":28.711226735307136,"endHours":30.222248486135786,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:13","end":"07:13","startHours":6.222248486135785,"endHours":7.222248486135785,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:13","end":"08:13","startHours":7.222248486135785,"endHours":8.222248486135786,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:13","end":"09:13","startHours":8.222248486135786,"endHours":9.222248486135786,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:13","end":"10:13","startHours":9.222248486135786,"endHours":10.222248486135786,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:13","end":"11:13","startHours":10.222248486135786,"endHours":11.222248486135786,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:13","end":"12:13","startHours":11.222248486135786,"endHours":12.222248486135786,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:13","end":"13:13","startHours":12.222248486135786,"endHours":13.222248486135786,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:13","end":"14:13","startHours":13.222248486135786,"endHours":14.222248486135786,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:13","end":"15:13","startHours":14.222248486135786,"endHours":15.222248486135786,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:13","end":"16:13","startHours":15.222248486135786,"endHours":16.222248486135786,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:13","end":"17:13","startHours":16.222248486135786,"endHours":17.222248486135786,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:13","end":"18:13","startHours":17.222248486135786,"endHours":18.222248486135786,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:13","end":"19:13","startHours":18.222248486135786,"endHours":19.222248486135786,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:13","end":"20:13","startHours":19.222248486135786,"endHours":20.222248486135786,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:13","end":"21:13","startHours":20.222248486135786,"endHours":21.222248486135786,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:13","end":"22:13","startHours":21.222248486135786,"endHours":22.222248486135786,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:13","end":"23:13","startHours":22.222248486135786,"endHours":23.222248486135786,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:13","end":"00:13","startHours":23.222248486135786,"endHours":24.222248486135786,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:13","end":"01:13","startHours":24.222248486135786,"endHours":25.222248486135786,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:13","end":"02:13","startHours":25.222248486135786,"endHours":26.222248486135786,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:13","end":"03:13","startHours":26.222248486135786,"endHours":27.222248486135786,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:13","end":"04:13","startHours":27.222248486135786,"endHours":28.222248486135786,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:13","end":"05:13","startHours":28.222248486135786,"endHours":29.222248486135786,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:13","end":"06:13","startHours":29.222248486135786,"endHours":30.222248486135786,"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","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mṛtyu","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":2.6341896476527893,"eotMinutes":5.868311030728706,"ayanamsa":26.2376}},"calendars":{"vikram_samvat":2227,"vikram_samvatsara":"Subhānu","saka_samvat":2092,"saka_samvatsara":"Pramoda","bengali_samvat":1577,"malayalam_era":1346,"nanakshahi_year":701,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","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":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Ṣaṣṭhī · Vikram 2227 Subhānu · Śaka 2092 Pramoda"},"festivals":[{"id":"subrahmanya-shashthi","name":"Subrahmaṇya Ṣaṣṭhī","name_sanskrit":"सुब्रह्मण्य षष्ठी","tradition":"Shaiva","associated_deity":"Kārttikeya","significance":"Worship of Kārttikeya as Subrahmaṇya.","vrata":true,"detection":{"tithi_number":6,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"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 16, 2170 CE · Perth, Australia · Vidhyamitra","description":"September 16, 2170 CE for Perth, Australia: Śukla Ṣaṣṭhī, sūryodaya 06:13, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2170-09-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2170-09-16","sa":"https://sa.vidhyamitra.com/city/perth/2170-09-16","hi":"https://hi.vidhyamitra.com/city/perth/2170-09-16","x-default":"https://vidhyamitra.com/city/perth/2170-09-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T02:21:31.397Z","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":"2026-06-01T02:21:31.397Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T02:21:31.397Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}