{"id":"vidhyamitra:city-day:perth:2011-09-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2011-09-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-09-25","date_display":"September 25, 2011 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":2011,"month":9,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455829.770833,"kali_year":5113,"ahargana":1867364.2708,"sun":{"sidereal_longitude":156.8495,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":124.1759,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.3264,"elapsed_within_tithi_degrees":3.3264},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":124.1759,"elapsed_within_degrees":4.1759},"yoga":{"number":22,"name":"Sādhya","sum_longitude":281.0254},"karana":{"half_tithi_index":54,"name":"Gara"},"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":2011,"month":9,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455829.770833,"ahargana":1867364.2708,"kali_year":5113,"ayanamsa_lahiri":24.0169,"grahas":{"sun":{"sidereal_longitude":157.619501,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":123.66610100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false,"latitude":-4.1141},"mars":{"sidereal_longitude":99.41090099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":154.257201,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":15.141300999999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":168.19100100000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":173.619101,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":238.0545,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":58.0545,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"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":2011,"month":9,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455829.770833,"kali_year":5113,"ahargana":1867364.2708,"sun":{"sidereal_longitude":156.8495,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":124.1759,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.3264,"elapsed_within_tithi_degrees":3.3264},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":124.1759,"elapsed_within_degrees":4.1759},"yoga":{"number":22,"name":"Sādhya","sum_longitude":281.0254},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.114,"elongation":32.674},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.114,"opposition_distance":147.326}},"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":"06:02","sunsetLocal":"18:13","solarNoonLocal":"12:07","dayLengthHours":12.185036811860098,"dayLengthDisplay":"12 Hours 11 Mins 06 Secs","nightLengthDisplay":"11 Hours 48 Mins 54 Secs","moonriseLocal":"04:20","moonsetLocal":"15:23","rahuKala":{"name":"Rāhu Kāla","start":"16:42","end":"18:13","startHours":16.692913361308502,"endHours":18.216042962791015,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:07","end":"13:39","startHours":12.123524556860964,"endHours":13.646654158343477,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:10","end":"16:42","startHours":15.16978375982599,"endHours":16.692913361308502,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:17","startHours":8.874181407031607,"endHours":9.280349300760275,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:52","startHours":6.538716018091754,"endHours":6.863650333074689,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:32","startHours":11.717356663132296,"endHours":12.529692450589636,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:24","end":"05:13","startHours":4.406334576016237,"endHours":5.218670363473576,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:01","end":"06:02","startHours":5.015586416609242,"endHours":6.031006150930916,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:58","startHours":14.154364025504314,"endHours":14.966699812961654,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.016042962791015,"endHours":18.416042962791014,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:43","startHours":18.216042962791015,"endHours":18.723752829951852,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.966042962791015,"endHours":19.716042962791015,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:32","startHours":23.717356663132293,"endHours":24.529692450589636,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:02","end":"07:33","startHours":6.031006150930916,"endHours":7.554135752413428,"quality":"inauspicious"},{"name":"Chala","start":"07:33","end":"09:05","startHours":7.554135752413428,"endHours":9.07726535389594,"quality":"neutral"},{"name":"Labha","start":"09:05","end":"10:36","startHours":9.07726535389594,"endHours":10.600394955378452,"quality":"auspicious"},{"name":"Amṛta","start":"10:36","end":"12:07","startHours":10.600394955378452,"endHours":12.123524556860964,"quality":"auspicious"},{"name":"Kāla","start":"12:07","end":"13:39","startHours":12.123524556860964,"endHours":13.646654158343477,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:10","startHours":13.646654158343477,"endHours":15.16978375982599,"quality":"auspicious"},{"name":"Roga","start":"15:10","end":"16:42","startHours":15.16978375982599,"endHours":16.692913361308502,"quality":"inauspicious"},{"name":"Udveg","start":"16:42","end":"18:13","startHours":16.692913361308502,"endHours":18.216042962791015,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:13","end":"19:42","startHours":18.216042962791015,"endHours":19.692913361308502,"quality":"auspicious"},{"name":"Roga","start":"19:42","end":"21:10","startHours":19.692913361308502,"endHours":21.16978375982599,"quality":"inauspicious"},{"name":"Udveg","start":"21:10","end":"22:39","startHours":21.16978375982599,"endHours":22.64665415834348,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:07","startHours":22.64665415834348,"endHours":24.123524556860964,"quality":"neutral"},{"name":"Labha","start":"00:07","end":"01:36","startHours":24.123524556860964,"endHours":25.600394955378455,"quality":"auspicious"},{"name":"Amṛta","start":"01:36","end":"03:05","startHours":25.600394955378455,"endHours":27.077265353895942,"quality":"auspicious"},{"name":"Kāla","start":"03:05","end":"04:33","startHours":27.077265353895942,"endHours":28.55413575241343,"quality":"inauspicious"},{"name":"Śubha","start":"04:33","end":"06:02","startHours":28.55413575241343,"endHours":30.031006150930917,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:02","end":"07:02","startHours":6.031006150930916,"endHours":7.031006150930916,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:02","end":"08:02","startHours":7.031006150930916,"endHours":8.031006150930917,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:02","end":"09:02","startHours":8.031006150930917,"endHours":9.031006150930917,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:02","end":"10:02","startHours":9.031006150930917,"endHours":10.031006150930917,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:02","end":"11:02","startHours":10.031006150930917,"endHours":11.031006150930917,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:02","end":"12:02","startHours":11.031006150930917,"endHours":12.031006150930917,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:02","end":"13:02","startHours":12.031006150930917,"endHours":13.031006150930917,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:02","end":"14:02","startHours":13.031006150930917,"endHours":14.031006150930917,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:02","end":"15:02","startHours":14.031006150930917,"endHours":15.031006150930917,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:02","end":"16:02","startHours":15.031006150930917,"endHours":16.031006150930917,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:02","end":"17:02","startHours":16.031006150930917,"endHours":17.031006150930917,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:02","end":"18:02","startHours":17.031006150930917,"endHours":18.031006150930917,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:02","end":"19:02","startHours":18.031006150930917,"endHours":19.031006150930917,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:02","end":"20:02","startHours":19.031006150930917,"endHours":20.031006150930917,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:02","end":"21:02","startHours":20.031006150930917,"endHours":21.031006150930917,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:02","end":"22:02","startHours":21.031006150930917,"endHours":22.031006150930917,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:02","end":"23:02","startHours":22.031006150930917,"endHours":23.031006150930917,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:02","end":"00:02","startHours":23.031006150930917,"endHours":24.031006150930917,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:02","end":"01:02","startHours":24.031006150930917,"endHours":25.031006150930917,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:02","end":"02:02","startHours":25.031006150930917,"endHours":26.031006150930917,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:02","end":"03:02","startHours":26.031006150930917,"endHours":27.031006150930917,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:02","end":"04:02","startHours":27.031006150930917,"endHours":28.031006150930917,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:02","end":"05:02","startHours":28.031006150930917,"endHours":29.031006150930917,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:02","end":"06:02","startHours":29.031006150930917,"endHours":30.031006150930917,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-0.6507753094551848,"eotMinutes":9.146526588342006,"ayanamsa":24.0169}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Trayodaśī · Vikram 2068 Krodhi · Śaka 1933 Khara"},"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 25, 2011 CE · Perth, Australia · Vidhyamitra","description":"September 25, 2011 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 06:02, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2011-09-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2011-09-25","sa":"https://sa.vidhyamitra.com/city/perth/2011-09-25","hi":"https://hi.vidhyamitra.com/city/perth/2011-09-25","x-default":"https://vidhyamitra.com/city/perth/2011-09-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T21:01:01.054Z","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":"2026-05-22T21:01:01.054Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T21:01:01.054Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}