{"id":"vidhyamitra:city-day:perth:2102-01-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2102-01-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2102-01-25","date_display":"January 25, 2102 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":2102,"month":1,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488823.770833,"kali_year":5203,"ahargana":1900358.2708,"sun":{"sidereal_longitude":279.046,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":354.4576,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":75.4117,"elapsed_within_tithi_degrees":3.4117},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.4576,"elapsed_within_degrees":7.791},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.5036},"karana":{"half_tithi_index":12,"name":"Gara"},"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":2102,"month":1,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488823.770833,"ahargana":1900358.2708,"kali_year":5203,"ayanamsa_lahiri":25.2788,"grahas":{"sun":{"sidereal_longitude":279.331587,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":357.153387,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":4.0637},"mars":{"sidereal_longitude":45.108587,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":253.63208699999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":230.55588699999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":236.1213869999999,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":203.01108699999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":289.8736,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":109.8736,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"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":2102,"month":1,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488823.770833,"kali_year":5203,"ahargana":1900358.2708,"sun":{"sidereal_longitude":279.046,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":354.4576,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":75.4117,"elapsed_within_tithi_degrees":3.4117},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.4576,"elapsed_within_degrees":7.791},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.5036},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.064,"elongation":75.412},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.064,"opposition_distance":104.588}},"eclipse_window_40days":[{"offset_days":-6,"type":"solar","occurs":true,"moon_latitude":-1.366,"elongation":0.393},{"offset_days":9,"type":"lunar","occurs":true,"moon_latitude":0.307,"opposition_distance":2.772}]},"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":"05:35","sunsetLocal":"19:23","solarNoonLocal":"12:29","dayLengthHours":13.805874017299718,"dayLengthDisplay":"13 Hours 48 Mins 21 Secs","nightLengthDisplay":"10 Hours 11 Mins 39 Secs","moonriseLocal":"11:59","moonsetLocal":"23:21","rahuKala":{"name":"Rāhu Kāla","start":"12:29","end":"14:12","startHours":12.481112142032526,"endHours":14.20684639419499,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:18","end":"09:02","startHours":7.303909385545131,"endHours":9.029643637707595,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:45","end":"12:29","startHours":10.755377889870061,"endHours":12.481112142032526,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:48","end":"09:16","startHours":8.799545737419267,"endHours":9.259741537995923,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:09","end":"06:31","startHours":6.153419884103487,"endHours":6.5215765245648125,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:56","startHours":12.020916341455866,"endHours":12.941307942609182,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:44","end":"04:39","startHours":3.7373919310760364,"endHours":4.6577835322293515,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:26","end":"05:35","startHours":4.4276856319410225,"endHours":5.578175133382666,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.78209114491581,"endHours":15.702482746069125,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:11","end":"19:35","startHours":19.184049150682384,"endHours":19.584049150682382,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:23","end":"19:58","startHours":19.384049150682383,"endHours":19.959293901403203,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:08","end":"20:53","startHours":19.134049150682383,"endHours":20.884049150682383,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:56","startHours":24.020916341455866,"endHours":24.94130794260918,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:35","end":"07:18","startHours":5.578175133382666,"endHours":7.303909385545131,"quality":"auspicious"},{"name":"Amṛta","start":"07:18","end":"09:02","startHours":7.303909385545131,"endHours":9.029643637707595,"quality":"auspicious"},{"name":"Kāla","start":"09:02","end":"10:45","startHours":9.029643637707595,"endHours":10.755377889870061,"quality":"inauspicious"},{"name":"Śubha","start":"10:45","end":"12:29","startHours":10.755377889870061,"endHours":12.481112142032526,"quality":"auspicious"},{"name":"Roga","start":"12:29","end":"14:12","startHours":12.481112142032526,"endHours":14.20684639419499,"quality":"inauspicious"},{"name":"Udveg","start":"14:12","end":"15:56","startHours":14.20684639419499,"endHours":15.932580646357454,"quality":"inauspicious"},{"name":"Chala","start":"15:56","end":"17:39","startHours":15.932580646357454,"endHours":17.65831489851992,"quality":"neutral"},{"name":"Labha","start":"17:39","end":"19:23","startHours":17.65831489851992,"endHours":19.384049150682383,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:23","end":"20:39","startHours":19.384049150682383,"endHours":20.65831489851992,"quality":"inauspicious"},{"name":"Chala","start":"20:39","end":"21:56","startHours":20.65831489851992,"endHours":21.932580646357454,"quality":"neutral"},{"name":"Labha","start":"21:56","end":"23:12","startHours":21.932580646357454,"endHours":23.20684639419499,"quality":"auspicious"},{"name":"Amṛta","start":"23:12","end":"00:29","startHours":23.20684639419499,"endHours":24.481112142032522,"quality":"auspicious"},{"name":"Kāla","start":"00:29","end":"01:45","startHours":24.481112142032522,"endHours":25.75537788987006,"quality":"inauspicious"},{"name":"Śubha","start":"01:45","end":"03:02","startHours":25.75537788987006,"endHours":27.029643637707593,"quality":"auspicious"},{"name":"Roga","start":"03:02","end":"04:18","startHours":27.029643637707593,"endHours":28.30390938554513,"quality":"inauspicious"},{"name":"Udveg","start":"04:18","end":"05:35","startHours":28.30390938554513,"endHours":29.578175133382665,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:35","end":"06:35","startHours":5.578175133382666,"endHours":6.578175133382666,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:35","end":"07:35","startHours":6.578175133382666,"endHours":7.578175133382666,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:35","end":"08:35","startHours":7.578175133382666,"endHours":8.578175133382665,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:35","end":"09:35","startHours":8.578175133382665,"endHours":9.578175133382665,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:35","end":"10:35","startHours":9.578175133382665,"endHours":10.578175133382665,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:35","end":"11:35","startHours":10.578175133382665,"endHours":11.578175133382665,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:35","end":"12:35","startHours":11.578175133382665,"endHours":12.578175133382665,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:35","end":"13:35","startHours":12.578175133382665,"endHours":13.578175133382665,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:35","end":"14:35","startHours":13.578175133382665,"endHours":14.578175133382665,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:35","end":"15:35","startHours":14.578175133382665,"endHours":15.578175133382665,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:35","end":"16:35","startHours":15.578175133382665,"endHours":16.578175133382665,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:35","end":"17:35","startHours":16.578175133382665,"endHours":17.578175133382665,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:35","end":"18:35","startHours":17.578175133382665,"endHours":18.578175133382665,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:35","end":"19:35","startHours":18.578175133382665,"endHours":19.578175133382665,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:35","end":"20:35","startHours":19.578175133382665,"endHours":20.578175133382665,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:35","end":"21:35","startHours":20.578175133382665,"endHours":21.578175133382665,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:35","end":"22:35","startHours":21.578175133382665,"endHours":22.578175133382665,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:35","end":"23:35","startHours":22.578175133382665,"endHours":23.578175133382665,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:35","end":"00:35","startHours":23.578175133382665,"endHours":24.578175133382665,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:35","end":"01:35","startHours":24.578175133382665,"endHours":25.578175133382665,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:35","end":"02:35","startHours":25.578175133382665,"endHours":26.578175133382665,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:35","end":"03:35","startHours":26.578175133382665,"endHours":27.578175133382665,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:35","end":"04:35","startHours":27.578175133382665,"endHours":28.578175133382665,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:35","end":"05:35","startHours":28.578175133382665,"endHours":29.578175133382665,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"South-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-19.107834406086717,"eotMinutes":-12.308728521951446,"ayanamsa":25.2788}},"calendars":{"vikram_samvat":2159,"vikram_samvatsara":"Yuva","saka_samvat":2024,"saka_samvatsara":"Dundubhi","bengali_samvat":1509,"malayalam_era":1278,"nanakshahi_year":633,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Saptamī · Vikram 2159 Yuva · Śaka 2024 Dundubhi"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"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 January 25, 2102 CE · Perth, Australia · Vidhyamitra","description":"January 25, 2102 CE for Perth, Australia: Śukla Saptamī, sūryodaya 05:35, sūryāsta 19:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2102-01-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2102-01-25","sa":"https://sa.vidhyamitra.com/city/perth/2102-01-25","hi":"https://hi.vidhyamitra.com/city/perth/2102-01-25","x-default":"https://vidhyamitra.com/city/perth/2102-01-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T11:33:28.103Z","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":"2026-05-24T11:33:28.103Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T11:33:28.103Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}