{"id":"vidhyamitra:city-day:perth:2131-01-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2131-01-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-01-23","date_display":"January 23, 2131 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":2131,"month":1,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499413.770833,"kali_year":5232,"ahargana":1910948.2708,"sun":{"sidereal_longitude":276.4788,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":204.2152,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":287.7364,"elapsed_within_tithi_degrees":11.7364},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.2152,"elapsed_within_degrees":4.2152},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":120.694},"karana":{"half_tithi_index":47,"name":"Gara"},"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":2131,"month":1,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499413.770833,"ahargana":1910948.2708,"kali_year":5232,"ayanamsa_lahiri":25.6838,"grahas":{"sun":{"sidereal_longitude":276.851671,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":203.64047099999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":4.0625},"mars":{"sidereal_longitude":230.465871,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":272.16487099999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":18.619571000000008,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":233.503871,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":198.007971,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":88.7645,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":268.7645,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2131,"month":1,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499413.770833,"kali_year":5232,"ahargana":1910948.2708,"sun":{"sidereal_longitude":276.4788,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":204.2152,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":287.7364,"elapsed_within_tithi_degrees":11.7364},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.2152,"elapsed_within_degrees":4.2152},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":120.694},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.063,"elongation":72.264},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.063,"opposition_distance":107.736}},"eclipse_window_40days":[{"offset_days":6,"type":"solar","occurs":true,"moon_latitude":-0.919,"elongation":2.391}]},"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":"05:33","sunsetLocal":"19:24","solarNoonLocal":"12:28","dayLengthHours":13.852804175302825,"dayLengthDisplay":"13 Hours 51 Mins 10 Secs","nightLengthDisplay":"10 Hours 08 Mins 50 Secs","moonriseLocal":"00:47","moonsetLocal":"14:24","rahuKala":{"name":"Rāhu Kāla","start":"15:56","end":"17:40","startHours":15.935921003494336,"endHours":17.66752152540719,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:01","end":"10:44","startHours":9.009518915842923,"endHours":10.741119437755778,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:28","end":"14:12","startHours":12.47271995966863,"endHours":14.204320481581483,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:47","end":"09:14","startHours":8.778638846254543,"endHours":9.240398985431304,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:07","end":"06:30","startHours":6.123518045988168,"endHours":6.492926157329577,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:56","startHours":12.010959820491868,"endHours":12.93448009884539,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:42","end":"04:37","startHours":3.6992773153101735,"endHours":4.622797593663695,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:24","end":"05:33","startHours":4.391917524075315,"endHours":5.546317872017217,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.781520655552434,"endHours":15.705040933905956,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:12","end":"19:36","startHours":19.199122047320042,"endHours":19.59912204732004,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:24","end":"19:59","startHours":19.39912204732004,"endHours":19.976322221290992,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:09","end":"20:54","startHours":19.14912204732004,"endHours":20.89912204732004,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:56","startHours":24.01095982049187,"endHours":24.93448009884539,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:33","end":"07:17","startHours":5.546317872017217,"endHours":7.2779183939300705,"quality":"inauspicious"},{"name":"Udveg","start":"07:17","end":"09:01","startHours":7.2779183939300705,"endHours":9.009518915842923,"quality":"inauspicious"},{"name":"Chala","start":"09:01","end":"10:44","startHours":9.009518915842923,"endHours":10.741119437755778,"quality":"neutral"},{"name":"Labha","start":"10:44","end":"12:28","startHours":10.741119437755778,"endHours":12.47271995966863,"quality":"auspicious"},{"name":"Amṛta","start":"12:28","end":"14:12","startHours":12.47271995966863,"endHours":14.204320481581483,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:56","startHours":14.204320481581483,"endHours":15.935921003494336,"quality":"inauspicious"},{"name":"Śubha","start":"15:56","end":"17:40","startHours":15.935921003494336,"endHours":17.66752152540719,"quality":"auspicious"},{"name":"Roga","start":"17:40","end":"19:24","startHours":17.66752152540719,"endHours":19.39912204732004,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:24","end":"20:40","startHours":19.39912204732004,"endHours":20.66752152540719,"quality":"inauspicious"},{"name":"Śubha","start":"20:40","end":"21:56","startHours":20.66752152540719,"endHours":21.935921003494336,"quality":"auspicious"},{"name":"Roga","start":"21:56","end":"23:12","startHours":21.935921003494336,"endHours":23.204320481581483,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:28","startHours":23.204320481581483,"endHours":24.47271995966863,"quality":"inauspicious"},{"name":"Chala","start":"00:28","end":"01:44","startHours":24.47271995966863,"endHours":25.741119437755778,"quality":"neutral"},{"name":"Labha","start":"01:44","end":"03:01","startHours":25.741119437755778,"endHours":27.00951891584292,"quality":"auspicious"},{"name":"Amṛta","start":"03:01","end":"04:17","startHours":27.00951891584292,"endHours":28.27791839393007,"quality":"auspicious"},{"name":"Kāla","start":"04:17","end":"05:33","startHours":28.27791839393007,"endHours":29.546317872017216,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:33","end":"06:33","startHours":5.546317872017217,"endHours":6.546317872017217,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:33","end":"07:33","startHours":6.546317872017217,"endHours":7.546317872017217,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:33","end":"08:33","startHours":7.546317872017217,"endHours":8.546317872017216,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:33","end":"09:33","startHours":8.546317872017216,"endHours":9.546317872017216,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:33","end":"10:33","startHours":9.546317872017216,"endHours":10.546317872017216,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:33","end":"11:33","startHours":10.546317872017216,"endHours":11.546317872017216,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:33","end":"12:33","startHours":11.546317872017216,"endHours":12.546317872017216,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:33","end":"13:33","startHours":12.546317872017216,"endHours":13.546317872017216,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:33","end":"14:33","startHours":13.546317872017216,"endHours":14.546317872017216,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:33","end":"15:33","startHours":14.546317872017216,"endHours":15.546317872017216,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:33","end":"16:33","startHours":15.546317872017216,"endHours":16.546317872017216,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:33","end":"17:33","startHours":16.546317872017216,"endHours":17.546317872017216,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:33","end":"18:33","startHours":17.546317872017216,"endHours":18.546317872017216,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:33","end":"19:33","startHours":18.546317872017216,"endHours":19.546317872017216,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:33","end":"20:33","startHours":19.546317872017216,"endHours":20.546317872017216,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:33","end":"21:33","startHours":20.546317872017216,"endHours":21.546317872017216,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:33","end":"22:33","startHours":21.546317872017216,"endHours":22.546317872017216,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:33","end":"23:33","startHours":22.546317872017216,"endHours":23.546317872017216,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:33","end":"00:33","startHours":23.546317872017216,"endHours":24.546317872017216,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:33","end":"01:33","startHours":24.546317872017216,"endHours":25.546317872017216,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:33","end":"02:33","startHours":25.546317872017216,"endHours":26.546317872017216,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:33","end":"03:33","startHours":26.546317872017216,"endHours":27.546317872017216,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:33","end":"04:33","startHours":27.546317872017216,"endHours":28.546317872017216,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:33","end":"05:33","startHours":28.546317872017216,"endHours":29.546317872017216,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-19.591498943306178,"eotMinutes":-11.805197580117738,"ayanamsa":25.6838}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Pauṣa","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 Kṛṣṇa Navamī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[],"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":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"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 23, 2131 CE · Perth, Australia · Vidhyamitra","description":"January 23, 2131 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 05:33, sūryāsta 19:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2131-01-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2131-01-23","sa":"https://sa.vidhyamitra.com/city/perth/2131-01-23","hi":"https://hi.vidhyamitra.com/city/perth/2131-01-23","x-default":"https://vidhyamitra.com/city/perth/2131-01-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T22:53:37.652Z","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":"2026-05-30T22:53:37.652Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T22:53:37.652Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}