{"id":"vidhyamitra:city-day:perth:2001-01-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2001-01-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2001-01-08","date_display":"January 8, 2001 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":2001,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451917.770833,"kali_year":5102,"ahargana":1863452.2708,"sun":{"sidereal_longitude":263.7848,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":58.9997,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2149,"elapsed_within_tithi_degrees":11.2149},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":58.9997,"elapsed_within_degrees":5.6664},"yoga":{"number":25,"name":"Brahma","sum_longitude":322.7846},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2001,"month":1,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451917.770833,"ahargana":1863452.2708,"kali_year":5102,"ayanamsa_lahiri":23.8673,"grahas":{"sun":{"sidereal_longitude":263.957768,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":58.55536799999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false,"latitude":-1.9944},"mars":{"sidereal_longitude":195.137068,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":272.00016800000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":37.80116800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":310.76496799999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":30.36536799999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":85.3311,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":265.3311,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"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":2001,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451917.770833,"kali_year":5102,"ahargana":1863452.2708,"sun":{"sidereal_longitude":263.7848,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":58.9997,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.2149,"elapsed_within_tithi_degrees":11.2149},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":58.9997,"elapsed_within_degrees":5.6664},"yoga":{"number":25,"name":"Brahma","sum_longitude":322.7846},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.994,"elongation":155.215},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.994,"opposition_distance":24.785}},"eclipse_window_40days":[{"offset_days":2,"type":"lunar","occurs":true,"moon_latitude":0.182,"opposition_distance":1.705}]},"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":"05:20","sunsetLocal":"19:27","solarNoonLocal":"12:23","dayLengthHours":14.117579996839282,"dayLengthDisplay":"14 Hours 07 Mins 03 Secs","nightLengthDisplay":"9 Hours 52 Mins 57 Secs","moonriseLocal":"17:41","moonsetLocal":"03:43","rahuKala":{"name":"Rāhu Kāla","start":"07:06","end":"08:51","startHours":7.093570061740725,"endHours":8.858267561345635,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:37","end":"12:23","startHours":10.622965060950545,"endHours":12.387662560555455,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:09","end":"15:55","startHours":14.152360060160365,"endHours":15.917057559765276,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:37","end":"09:06","startHours":8.622974561398314,"endHours":9.093560561292957,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:55","end":"06:18","startHours":5.917105062004119,"endHours":6.293573861919833,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:51","startHours":11.917076560660812,"endHours":12.858248560450098,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:27","end":"04:23","startHours":3.446528562557244,"endHours":4.387700562346529,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:09","end":"05:20","startHours":4.152407562399208,"endHours":5.328872562135815,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:41","startHours":14.74059256002867,"endHours":15.681764559817955,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.246452558975097,"endHours":19.646452558975096,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.446452558975096,"endHours":20.0346850588434,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.196452558975096,"endHours":20.946452558975096,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:51","startHours":23.917076560660814,"endHours":24.858248560450097,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:20","end":"07:06","startHours":5.328872562135815,"endHours":7.093570061740725,"quality":"auspicious"},{"name":"Kāla","start":"07:06","end":"08:51","startHours":7.093570061740725,"endHours":8.858267561345635,"quality":"inauspicious"},{"name":"Śubha","start":"08:51","end":"10:37","startHours":8.858267561345635,"endHours":10.622965060950545,"quality":"auspicious"},{"name":"Roga","start":"10:37","end":"12:23","startHours":10.622965060950545,"endHours":12.387662560555455,"quality":"inauspicious"},{"name":"Udveg","start":"12:23","end":"14:09","startHours":12.387662560555455,"endHours":14.152360060160365,"quality":"inauspicious"},{"name":"Chala","start":"14:09","end":"15:55","startHours":14.152360060160365,"endHours":15.917057559765276,"quality":"neutral"},{"name":"Labha","start":"15:55","end":"17:41","startHours":15.917057559765276,"endHours":17.681755059370186,"quality":"auspicious"},{"name":"Amṛta","start":"17:41","end":"19:27","startHours":17.681755059370186,"endHours":19.446452558975096,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:27","end":"20:41","startHours":19.446452558975096,"endHours":20.681755059370186,"quality":"neutral"},{"name":"Labha","start":"20:41","end":"21:55","startHours":20.681755059370186,"endHours":21.917057559765276,"quality":"auspicious"},{"name":"Amṛta","start":"21:55","end":"23:09","startHours":21.917057559765276,"endHours":23.152360060160365,"quality":"auspicious"},{"name":"Kāla","start":"23:09","end":"00:23","startHours":23.152360060160365,"endHours":24.387662560555455,"quality":"inauspicious"},{"name":"Śubha","start":"00:23","end":"01:37","startHours":24.387662560555455,"endHours":25.622965060950545,"quality":"auspicious"},{"name":"Roga","start":"01:37","end":"02:51","startHours":25.622965060950545,"endHours":26.858267561345635,"quality":"inauspicious"},{"name":"Udveg","start":"02:51","end":"04:06","startHours":26.858267561345635,"endHours":28.093570061740724,"quality":"inauspicious"},{"name":"Chala","start":"04:06","end":"05:20","startHours":28.093570061740724,"endHours":29.328872562135814,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:20","end":"06:20","startHours":5.328872562135815,"endHours":6.328872562135815,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:20","end":"07:20","startHours":6.328872562135815,"endHours":7.328872562135815,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:20","end":"08:20","startHours":7.328872562135815,"endHours":8.328872562135814,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:20","end":"09:20","startHours":8.328872562135814,"endHours":9.328872562135814,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:20","end":"10:20","startHours":9.328872562135814,"endHours":10.328872562135814,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:20","end":"11:20","startHours":10.328872562135814,"endHours":11.328872562135814,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:20","end":"12:20","startHours":11.328872562135814,"endHours":12.328872562135814,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:20","end":"13:20","startHours":12.328872562135814,"endHours":13.328872562135814,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:20","end":"14:20","startHours":13.328872562135814,"endHours":14.328872562135814,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:20","end":"15:20","startHours":14.328872562135814,"endHours":15.328872562135814,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:20","end":"16:20","startHours":15.328872562135814,"endHours":16.328872562135814,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:20","end":"17:20","startHours":16.328872562135814,"endHours":17.328872562135814,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:20","end":"18:20","startHours":17.328872562135814,"endHours":18.328872562135814,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:20","end":"19:20","startHours":18.328872562135814,"endHours":19.328872562135814,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:20","end":"20:20","startHours":19.328872562135814,"endHours":20.328872562135814,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:20","end":"21:20","startHours":20.328872562135814,"endHours":21.328872562135814,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:20","end":"22:20","startHours":21.328872562135814,"endHours":22.328872562135814,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:20","end":"23:20","startHours":22.328872562135814,"endHours":23.328872562135814,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:20","end":"00:20","startHours":23.328872562135814,"endHours":24.328872562135814,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:20","end":"01:20","startHours":24.328872562135814,"endHours":25.328872562135814,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:20","end":"02:20","startHours":25.328872562135814,"endHours":26.328872562135814,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:20","end":"03:20","startHours":26.328872562135814,"endHours":27.328872562135814,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:20","end":"04:20","startHours":27.328872562135814,"endHours":28.328872562135814,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:20","end":"05:20","startHours":28.328872562135814,"endHours":29.328872562135814,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"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":-22.249437740108537,"eotMinutes":-6.7017536333273355,"ayanamsa":23.8673}},"calendars":{"vikram_samvat":2058,"vikram_samvatsara":"Jaya","saka_samvat":1923,"saka_samvatsara":"Vṛṣa","bengali_samvat":1408,"malayalam_era":1177,"nanakshahi_year":532,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Trayodaśī · Vikram 2058 Jaya · Śaka 1923 Vṛṣa"},"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},{"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 8, 2001 CE · Perth, Australia · Vidhyamitra","description":"January 8, 2001 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:20, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2001-01-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2001-01-08","sa":"https://sa.vidhyamitra.com/city/perth/2001-01-08","hi":"https://hi.vidhyamitra.com/city/perth/2001-01-08","x-default":"https://vidhyamitra.com/city/perth/2001-01-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T15:44:54.490Z","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":"2026-05-16T15:44:54.490Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T15:44:54.490Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}