{"id":"vidhyamitra:city-day:perth:2181-09-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2181-09-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2181-09-26","date_display":"September 26, 2181 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":2181,"month":9,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517922.770833,"kali_year":5283,"ahargana":1929457.2708,"sun":{"sidereal_longitude":155.8825,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":14.5796,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":218.697,"elapsed_within_tithi_degrees":2.697},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":14.5796,"elapsed_within_degrees":1.2462},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":170.4621},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2181,"month":9,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517922.770833,"ahargana":1929457.2708,"kali_year":5283,"ayanamsa_lahiri":26.3917,"grahas":{"sun":{"sidereal_longitude":157.06509099999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":13.843991000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false,"latitude":-0.5098},"mars":{"sidereal_longitude":172.77649099999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":138.227691,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":131.267091,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":199.93839100000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":94.267991,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":188.0686,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":8.0686,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":2181,"month":9,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517922.770833,"kali_year":5283,"ahargana":1929457.2708,"sun":{"sidereal_longitude":155.8825,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":14.5796,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":218.697,"elapsed_within_tithi_degrees":2.697},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":14.5796,"elapsed_within_degrees":1.2462},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":170.4621},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.51,"elongation":141.303},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.51,"opposition_distance":38.697}},"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":"06:00","sunsetLocal":"18:14","solarNoonLocal":"12:07","dayLengthHours":12.24526461941518,"dayLengthDisplay":"12 Hours 14 Mins 43 Secs","nightLengthDisplay":"11 Hours 45 Mins 17 Secs","moonriseLocal":"21:09","moonsetLocal":"07:59","rahuKala":{"name":"Rāhu Kāla","start":"12:07","end":"13:39","startHours":12.117702021914006,"endHours":13.648360099340906,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:32","end":"09:03","startHours":7.525727789633315,"endHours":9.056385867060213,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:35","end":"12:07","startHours":10.58704394448711,"endHours":12.117702021914006,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:16","startHours":8.852298123403292,"endHours":9.260473610717131,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:50","startHours":6.505289071348717,"endHours":6.8318294611997885,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:32","startHours":11.709526534600167,"endHours":12.525877509227845,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:22","end":"05:11","startHours":4.36236776295106,"endHours":5.1787187375787385,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:58","end":"06:00","startHours":4.974630993921819,"endHours":5.995069712206417,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:58","startHours":14.158579458483203,"endHours":14.974930433110881,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:02","end":"18:26","startHours":18.040334331621597,"endHours":18.440334331621596,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:14","end":"18:45","startHours":18.240334331621597,"endHours":18.750553690763894,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:59","end":"19:44","startHours":17.990334331621597,"endHours":19.740334331621597,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:32","startHours":23.709526534600165,"endHours":24.525877509227847,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:00","end":"07:32","startHours":5.995069712206417,"endHours":7.525727789633315,"quality":"auspicious"},{"name":"Amṛta","start":"07:32","end":"09:03","startHours":7.525727789633315,"endHours":9.056385867060213,"quality":"auspicious"},{"name":"Kāla","start":"09:03","end":"10:35","startHours":9.056385867060213,"endHours":10.58704394448711,"quality":"inauspicious"},{"name":"Śubha","start":"10:35","end":"12:07","startHours":10.58704394448711,"endHours":12.117702021914006,"quality":"auspicious"},{"name":"Roga","start":"12:07","end":"13:39","startHours":12.117702021914006,"endHours":13.648360099340906,"quality":"inauspicious"},{"name":"Udveg","start":"13:39","end":"15:11","startHours":13.648360099340906,"endHours":15.179018176767801,"quality":"inauspicious"},{"name":"Chala","start":"15:11","end":"16:43","startHours":15.179018176767801,"endHours":16.709676254194697,"quality":"neutral"},{"name":"Labha","start":"16:43","end":"18:14","startHours":16.709676254194697,"endHours":18.240334331621597,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:14","end":"19:43","startHours":18.240334331621597,"endHours":19.7096762541947,"quality":"inauspicious"},{"name":"Chala","start":"19:43","end":"21:11","startHours":19.7096762541947,"endHours":21.1790181767678,"quality":"neutral"},{"name":"Labha","start":"21:11","end":"22:39","startHours":21.1790181767678,"endHours":22.648360099340906,"quality":"auspicious"},{"name":"Amṛta","start":"22:39","end":"00:07","startHours":22.648360099340906,"endHours":24.117702021914006,"quality":"auspicious"},{"name":"Kāla","start":"00:07","end":"01:35","startHours":24.117702021914006,"endHours":25.58704394448711,"quality":"inauspicious"},{"name":"Śubha","start":"01:35","end":"03:03","startHours":25.58704394448711,"endHours":27.056385867060214,"quality":"auspicious"},{"name":"Roga","start":"03:03","end":"04:32","startHours":27.056385867060214,"endHours":28.525727789633315,"quality":"inauspicious"},{"name":"Udveg","start":"04:32","end":"06:00","startHours":28.525727789633315,"endHours":29.995069712206416,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:00","end":"07:00","startHours":5.995069712206417,"endHours":6.995069712206417,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:00","end":"08:00","startHours":6.995069712206417,"endHours":7.995069712206417,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:00","end":"09:00","startHours":7.995069712206417,"endHours":8.995069712206417,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:00","end":"10:00","startHours":8.995069712206417,"endHours":9.995069712206417,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:00","end":"11:00","startHours":9.995069712206417,"endHours":10.995069712206417,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:00","end":"12:00","startHours":10.995069712206417,"endHours":11.995069712206417,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:00","end":"13:00","startHours":11.995069712206417,"endHours":12.995069712206417,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:00","end":"14:00","startHours":12.995069712206417,"endHours":13.995069712206417,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:00","end":"15:00","startHours":13.995069712206417,"endHours":14.995069712206417,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:00","end":"16:00","startHours":14.995069712206417,"endHours":15.995069712206417,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:00","end":"17:00","startHours":15.995069712206417,"endHours":16.995069712206416,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:00","end":"18:00","startHours":16.995069712206416,"endHours":17.995069712206416,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:00","end":"19:00","startHours":17.995069712206416,"endHours":18.995069712206416,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:00","end":"20:00","startHours":18.995069712206416,"endHours":19.995069712206416,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:00","end":"21:00","startHours":19.995069712206416,"endHours":20.995069712206416,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:00","end":"22:00","startHours":20.995069712206416,"endHours":21.995069712206416,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:00","end":"23:00","startHours":21.995069712206416,"endHours":22.995069712206416,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:00","end":"00:00","startHours":22.995069712206416,"endHours":23.995069712206416,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:00","end":"01:00","startHours":23.995069712206416,"endHours":24.995069712206416,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:00","end":"02:00","startHours":24.995069712206416,"endHours":25.995069712206416,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:00","end":"03:00","startHours":25.995069712206416,"endHours":26.995069712206416,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:00","end":"04:00","startHours":26.995069712206416,"endHours":27.995069712206416,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:00","end":"05:00","startHours":27.995069712206416,"endHours":28.995069712206416,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:00","end":"06:00","startHours":28.995069712206416,"endHours":29.995069712206416,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-1.3741757921513347,"eotMinutes":9.49587868515961,"ayanamsa":26.3917}},"calendars":{"vikram_samvat":2238,"vikram_samvatsara":"Jaya","saka_samvat":2103,"saka_samvatsara":"Vṛṣa","bengali_samvat":1588,"malayalam_era":1357,"nanakshahi_year":712,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","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 Kṛṣṇa Caturthī · Vikram 2238 Jaya · Śaka 2103 Vṛṣa"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 26, 2181 CE · Perth, Australia · Vidhyamitra","description":"September 26, 2181 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 06:00, sūryāsta 18:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2181-09-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2181-09-26","sa":"https://sa.vidhyamitra.com/city/perth/2181-09-26","hi":"https://hi.vidhyamitra.com/city/perth/2181-09-26","x-default":"https://vidhyamitra.com/city/perth/2181-09-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T09:12:34.196Z","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":"2026-06-01T09:12:34.196Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T09:12:34.196Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}