{"id":"vidhyamitra:city-day:perth:2028-01-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2028-01-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2028-01-11","date_display":"January 11, 2028 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":2028,"month":1,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461781.770833,"kali_year":5129,"ahargana":1873316.2708,"sun":{"sidereal_longitude":265.8542,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":69.7394,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":163.8852,"elapsed_within_tithi_degrees":7.8852},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":69.7394,"elapsed_within_degrees":3.0727},"yoga":{"number":26,"name":"Indra","sum_longitude":335.5936},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2028,"month":1,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461781.770833,"ahargana":1873316.2708,"kali_year":5129,"ayanamsa_lahiri":24.2445,"grahas":{"sun":{"sidereal_longitude":266.07268999999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":70.43419,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":2.4458},"mars":{"sidereal_longitude":281.14209000000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":282.76999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":153.07609000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":302.60519,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":357.09319,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":282.6889,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":102.6889,"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":2028,"month":1,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461781.770833,"kali_year":5129,"ahargana":1873316.2708,"sun":{"sidereal_longitude":265.8542,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":69.7394,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":163.8852,"elapsed_within_tithi_degrees":7.8852},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":69.7394,"elapsed_within_degrees":3.0727},"yoga":{"number":26,"name":"Indra","sum_longitude":335.5936},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.446,"elongation":163.885},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.446,"opposition_distance":16.115}},"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":"05:22","sunsetLocal":"19:27","solarNoonLocal":"12:24","dayLengthHours":14.082058272400067,"dayLengthDisplay":"14 Hours 04 Mins 55 Secs","nightLengthDisplay":"9 Hours 55 Mins 05 Secs","moonriseLocal":"18:21","moonsetLocal":"04:23","rahuKala":{"name":"Rāhu Kāla","start":"15:56","end":"17:41","startHours":15.927922938682793,"endHours":17.688180222732804,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:53","end":"10:39","startHours":8.88689380248276,"endHours":10.647151086532768,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:24","end":"14:10","startHours":12.407408370582775,"endHours":14.167665654632785,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:07","startHours":8.652192831276093,"endHours":9.121594773689427,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:57","end":"06:20","startHours":5.953131662399413,"endHours":6.328653216330081,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:53","startHours":11.93800642816944,"endHours":12.876810312996112,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:29","end":"04:26","startHours":3.4887714647294006,"endHours":4.427575349556072,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:12","end":"05:22","startHours":4.192874378349404,"endHours":5.366379234382743,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:45","end":"15:42","startHours":14.754418082649453,"endHours":15.693221967476124,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24843750678281,"endHours":19.64843750678281,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44843750678281,"endHours":20.03518993479948,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19843750678281,"endHours":20.94843750678281,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:53","startHours":23.93800642816944,"endHours":24.87681031299611,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:22","end":"07:08","startHours":5.366379234382743,"endHours":7.126636518432751,"quality":"inauspicious"},{"name":"Udveg","start":"07:08","end":"08:53","startHours":7.126636518432751,"endHours":8.88689380248276,"quality":"inauspicious"},{"name":"Chala","start":"08:53","end":"10:39","startHours":8.88689380248276,"endHours":10.647151086532768,"quality":"neutral"},{"name":"Labha","start":"10:39","end":"12:24","startHours":10.647151086532768,"endHours":12.407408370582775,"quality":"auspicious"},{"name":"Amṛta","start":"12:24","end":"14:10","startHours":12.407408370582775,"endHours":14.167665654632785,"quality":"auspicious"},{"name":"Kāla","start":"14:10","end":"15:56","startHours":14.167665654632785,"endHours":15.927922938682793,"quality":"inauspicious"},{"name":"Śubha","start":"15:56","end":"17:41","startHours":15.927922938682793,"endHours":17.688180222732804,"quality":"auspicious"},{"name":"Roga","start":"17:41","end":"19:27","startHours":17.688180222732804,"endHours":19.44843750678281,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:27","end":"20:41","startHours":19.44843750678281,"endHours":20.6881802227328,"quality":"inauspicious"},{"name":"Śubha","start":"20:41","end":"21:56","startHours":20.6881802227328,"endHours":21.927922938682794,"quality":"auspicious"},{"name":"Roga","start":"21:56","end":"23:10","startHours":21.927922938682794,"endHours":23.167665654632785,"quality":"inauspicious"},{"name":"Udveg","start":"23:10","end":"00:24","startHours":23.167665654632785,"endHours":24.407408370582775,"quality":"inauspicious"},{"name":"Chala","start":"00:24","end":"01:39","startHours":24.407408370582775,"endHours":25.647151086532766,"quality":"neutral"},{"name":"Labha","start":"01:39","end":"02:53","startHours":25.647151086532766,"endHours":26.88689380248276,"quality":"auspicious"},{"name":"Amṛta","start":"02:53","end":"04:08","startHours":26.88689380248276,"endHours":28.12663651843275,"quality":"auspicious"},{"name":"Kāla","start":"04:08","end":"05:22","startHours":28.12663651843275,"endHours":29.36637923438274,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:22","end":"06:22","startHours":5.366379234382743,"endHours":6.366379234382743,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:22","end":"07:22","startHours":6.366379234382743,"endHours":7.366379234382743,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:22","end":"08:22","startHours":7.366379234382743,"endHours":8.366379234382743,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:22","end":"09:22","startHours":8.366379234382743,"endHours":9.366379234382743,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:22","end":"10:22","startHours":9.366379234382743,"endHours":10.366379234382743,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:22","end":"11:22","startHours":10.366379234382743,"endHours":11.366379234382743,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:22","end":"12:22","startHours":11.366379234382743,"endHours":12.366379234382743,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:22","end":"13:22","startHours":12.366379234382743,"endHours":13.366379234382743,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:22","end":"14:22","startHours":13.366379234382743,"endHours":14.366379234382743,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:22","end":"15:22","startHours":14.366379234382743,"endHours":15.366379234382743,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:22","end":"16:22","startHours":15.366379234382743,"endHours":16.36637923438274,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:22","end":"17:22","startHours":16.36637923438274,"endHours":17.36637923438274,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:22","end":"18:22","startHours":17.36637923438274,"endHours":18.36637923438274,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:22","end":"19:22","startHours":18.36637923438274,"endHours":19.36637923438274,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:22","end":"20:22","startHours":19.36637923438274,"endHours":20.36637923438274,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:22","end":"21:22","startHours":20.36637923438274,"endHours":21.36637923438274,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:22","end":"22:22","startHours":21.36637923438274,"endHours":22.36637923438274,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:22","end":"23:22","startHours":22.36637923438274,"endHours":23.36637923438274,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:22","end":"00:22","startHours":23.36637923438274,"endHours":24.36637923438274,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:22","end":"01:22","startHours":24.36637923438274,"endHours":25.36637923438274,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:22","end":"02:22","startHours":25.36637923438274,"endHours":26.36637923438274,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:22","end":"03:22","startHours":26.36637923438274,"endHours":27.36637923438274,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:22","end":"04:22","startHours":27.36637923438274,"endHours":28.36637923438274,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:22","end":"05:22","startHours":28.36637923438274,"endHours":29.36637923438274,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.899979966385065,"eotMinutes":-7.886502234966622,"ayanamsa":24.2445}},"calendars":{"vikram_samvat":2085,"vikram_samvatsara":"Durmati","saka_samvat":1950,"saka_samvatsara":"Kīlaka","bengali_samvat":1435,"malayalam_era":1204,"nanakshahi_year":559,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Caturdaśī · Vikram 2085 Durmati · Śaka 1950 Kīlaka"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 January 11, 2028 CE · Perth, Australia · Vidhyamitra","description":"January 11, 2028 CE for Perth, Australia: Śukla Caturdaśī, sūryodaya 05:22, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2028-01-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2028-01-11","sa":"https://sa.vidhyamitra.com/city/perth/2028-01-11","hi":"https://hi.vidhyamitra.com/city/perth/2028-01-11","x-default":"https://vidhyamitra.com/city/perth/2028-01-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:10:47.773Z","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":"2026-05-14T17:10:47.773Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:10:47.773Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}