{"id":"vidhyamitra:city-day:perth:2090-01-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2090-01-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2090-01-31","date_display":"January 31, 2090 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":2090,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2484447.770833,"kali_year":5191,"ahargana":1895982.2708,"sun":{"sidereal_longitude":286.3197,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":292.5458,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.2261,"elapsed_within_tithi_degrees":6.2261},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.5458,"elapsed_within_degrees":12.5458},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":218.8656},"karana":{"half_tithi_index":1,"name":"Bava"},"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":2090,"month":1,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2484447.770833,"ahargana":1895982.2708,"kali_year":5191,"ayanamsa_lahiri":25.1114,"grahas":{"sun":{"sidereal_longitude":286.524683,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":291.1648829999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false,"latitude":3.4044},"mars":{"sidereal_longitude":287.0914829999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":269.50318300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":228.286383,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":296.024683,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":38.60258299999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":161.7352,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":341.7352,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":2090,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2484447.770833,"kali_year":5191,"ahargana":1895982.2708,"sun":{"sidereal_longitude":286.3197,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":292.5458,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.2261,"elapsed_within_tithi_degrees":6.2261},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.5458,"elapsed_within_degrees":12.5458},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":218.8656},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.404,"elongation":6.226},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.404,"opposition_distance":173.774}},"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":"05:41","sunsetLocal":"19:19","solarNoonLocal":"12:30","dayLengthHours":13.632818173362967,"dayLengthDisplay":"13 Hours 37 Mins 58 Secs","nightLengthDisplay":"10 Hours 22 Mins 02 Secs","moonriseLocal":"06:05","moonsetLocal":"19:33","rahuKala":{"name":"Rāhu Kāla","start":"15:55","end":"17:37","startHours":15.909664352371443,"endHours":17.613766624041812,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:06","end":"10:48","startHours":9.093255265689958,"endHours":10.79735753736033,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:30","end":"14:12","startHours":12.501459809030699,"endHours":14.205562080701071,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:19","startHours":8.866041629467242,"endHours":9.320468901912674,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:15","end":"06:37","startHours":6.253084812906007,"endHours":6.616626630862353,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:57","startHours":12.047032536585268,"endHours":12.955887081476133,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:52","end":"04:47","startHours":3.8673416325674874,"endHours":4.776196177458352,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:41","startHours":4.5489825412356355,"endHours":5.685050722349216,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:41","startHours":14.77359617125786,"endHours":15.682450716148725,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:07","end":"19:31","startHours":19.117868895712185,"endHours":19.517868895712184,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:19","end":"19:53","startHours":19.317868895712184,"endHours":19.885902986268974,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:04","end":"20:49","startHours":19.067868895712184,"endHours":20.817868895712184,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:57","startHours":24.047032536585267,"endHours":24.95588708147613,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:41","end":"07:23","startHours":5.685050722349216,"endHours":7.389152994019588,"quality":"inauspicious"},{"name":"Udveg","start":"07:23","end":"09:06","startHours":7.389152994019588,"endHours":9.093255265689958,"quality":"inauspicious"},{"name":"Chala","start":"09:06","end":"10:48","startHours":9.093255265689958,"endHours":10.79735753736033,"quality":"neutral"},{"name":"Labha","start":"10:48","end":"12:30","startHours":10.79735753736033,"endHours":12.501459809030699,"quality":"auspicious"},{"name":"Amṛta","start":"12:30","end":"14:12","startHours":12.501459809030699,"endHours":14.205562080701071,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:55","startHours":14.205562080701071,"endHours":15.909664352371443,"quality":"inauspicious"},{"name":"Śubha","start":"15:55","end":"17:37","startHours":15.909664352371443,"endHours":17.613766624041812,"quality":"auspicious"},{"name":"Roga","start":"17:37","end":"19:19","startHours":17.613766624041812,"endHours":19.317868895712184,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:19","end":"20:37","startHours":19.317868895712184,"endHours":20.613766624041812,"quality":"inauspicious"},{"name":"Śubha","start":"20:37","end":"21:55","startHours":20.613766624041812,"endHours":21.909664352371443,"quality":"auspicious"},{"name":"Roga","start":"21:55","end":"23:12","startHours":21.909664352371443,"endHours":23.20556208070107,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:30","startHours":23.20556208070107,"endHours":24.5014598090307,"quality":"inauspicious"},{"name":"Chala","start":"00:30","end":"01:48","startHours":24.5014598090307,"endHours":25.79735753736033,"quality":"neutral"},{"name":"Labha","start":"01:48","end":"03:06","startHours":25.79735753736033,"endHours":27.093255265689958,"quality":"auspicious"},{"name":"Amṛta","start":"03:06","end":"04:23","startHours":27.093255265689958,"endHours":28.38915299401959,"quality":"auspicious"},{"name":"Kāla","start":"04:23","end":"05:41","startHours":28.38915299401959,"endHours":29.685050722349217,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:41","end":"06:41","startHours":5.685050722349216,"endHours":6.685050722349216,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:41","end":"07:41","startHours":6.685050722349216,"endHours":7.685050722349216,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:41","end":"08:41","startHours":7.685050722349216,"endHours":8.685050722349217,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:41","end":"09:41","startHours":8.685050722349217,"endHours":9.685050722349217,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:41","end":"10:41","startHours":9.685050722349217,"endHours":10.685050722349217,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:41","end":"11:41","startHours":10.685050722349217,"endHours":11.685050722349217,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:41","end":"12:41","startHours":11.685050722349217,"endHours":12.685050722349217,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:41","end":"13:41","startHours":12.685050722349217,"endHours":13.685050722349217,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:41","end":"14:41","startHours":13.685050722349217,"endHours":14.685050722349217,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:41","end":"15:41","startHours":14.685050722349217,"endHours":15.685050722349217,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:41","end":"16:41","startHours":15.685050722349217,"endHours":16.685050722349217,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:41","end":"17:41","startHours":16.685050722349217,"endHours":17.685050722349217,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:41","end":"18:41","startHours":17.685050722349217,"endHours":18.685050722349217,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:41","end":"19:41","startHours":18.685050722349217,"endHours":19.685050722349217,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:41","end":"20:41","startHours":19.685050722349217,"endHours":20.685050722349217,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:41","end":"21:41","startHours":20.685050722349217,"endHours":21.685050722349217,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:41","end":"22:41","startHours":21.685050722349217,"endHours":22.685050722349217,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:41","end":"23:41","startHours":22.685050722349217,"endHours":23.685050722349217,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:41","end":"00:41","startHours":23.685050722349217,"endHours":24.685050722349217,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:41","end":"01:41","startHours":24.685050722349217,"endHours":25.685050722349217,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:41","end":"02:41","startHours":25.685050722349217,"endHours":26.685050722349217,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:41","end":"03:41","startHours":26.685050722349217,"endHours":27.685050722349217,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:41","end":"04:41","startHours":27.685050722349217,"endHours":28.685050722349217,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:41","end":"05:41","startHours":28.685050722349217,"endHours":29.685050722349217,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.292939435453007,"eotMinutes":-13.52958854184206,"ayanamsa":25.1114}},"calendars":{"vikram_samvat":2147,"vikram_samvatsara":"Rudhirodgāri","saka_samvat":2012,"saka_samvatsara":"Sādhāraṇa","bengali_samvat":1497,"malayalam_era":1266,"nanakshahi_year":621,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pratipada · Vikram 2147 Rudhirodgāri · Śaka 2012 Sādhāraṇa"},"festivals":[{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"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 31, 2090 CE · Perth, Australia · Vidhyamitra","description":"January 31, 2090 CE for Perth, Australia: Śukla Pratipada, sūryodaya 05:41, sūryāsta 19:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2090-01-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2090-01-31","sa":"https://sa.vidhyamitra.com/city/perth/2090-01-31","hi":"https://hi.vidhyamitra.com/city/perth/2090-01-31","x-default":"https://vidhyamitra.com/city/perth/2090-01-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T19:02:22.049Z","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":"2026-06-02T19:02:22.049Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T19:02:22.049Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}