{"id":"vidhyamitra:city-day:perth:1840-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1840-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1840-01-13","date_display":"January 13, 1840 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":1840,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2393117.770833,"kali_year":4941,"ahargana":1804652.2708,"sun":{"sidereal_longitude":270.6271,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":12.2597,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":101.6326,"elapsed_within_tithi_degrees":5.6326},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":12.2597,"elapsed_within_degrees":12.2597},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.8868},"karana":{"half_tithi_index":16,"name":"Bālava"},"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":1840,"month":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2393117.770833,"ahargana":1804652.2708,"kali_year":4941,"ayanamsa_lahiri":21.6184,"grahas":{"sun":{"sidereal_longitude":270.36796000000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":9.572760000000017,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":3.5165},"mars":{"sidereal_longitude":298.38176,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":249.56286,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":205.24256000000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":227.63076,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":237.43936000000008,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":320.8381,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":140.8381,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":1840,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2393117.770833,"kali_year":4941,"ahargana":1804652.2708,"sun":{"sidereal_longitude":270.6271,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":12.2597,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":101.6326,"elapsed_within_tithi_degrees":5.6326},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":12.2597,"elapsed_within_degrees":12.2597},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.8868},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.516,"elongation":101.633},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.516,"opposition_distance":78.367}},"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":"05:24","sunsetLocal":"19:27","solarNoonLocal":"12:25","dayLengthHours":14.055983225669442,"dayLengthDisplay":"14 Hours 03 Mins 22 Secs","nightLengthDisplay":"9 Hours 56 Mins 38 Secs","moonriseLocal":"13:29","moonsetLocal":"00:35","rahuKala":{"name":"Rāhu Kāla","start":"07:09","end":"08:54","startHours":7.148905148563519,"endHours":8.9059030517722,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:40","end":"12:25","startHours":10.662900954980879,"endHours":12.419898858189558,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:11","end":"15:56","startHours":14.17689676139824,"endHours":15.93389466460692,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:08","startHours":8.671636664677708,"endHours":9.140169438866689,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.977573213091065,"endHours":6.35239943244225,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:53","startHours":11.951366084000579,"endHours":12.888431632378541,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:31","end":"04:27","startHours":3.517776148598913,"endHours":4.454841696976875,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:13","end":"05:24","startHours":4.220575309882385,"endHours":5.3919072453548385,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.762562729134466,"endHours":15.699628277512428,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24789047102428,"endHours":19.64789047102428,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44789047102428,"endHours":20.033556438760506,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19789047102428,"endHours":20.94789047102428,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:53","startHours":23.95136608400058,"endHours":24.888431632378545,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:24","end":"07:09","startHours":5.3919072453548385,"endHours":7.148905148563519,"quality":"auspicious"},{"name":"Kāla","start":"07:09","end":"08:54","startHours":7.148905148563519,"endHours":8.9059030517722,"quality":"inauspicious"},{"name":"Śubha","start":"08:54","end":"10:40","startHours":8.9059030517722,"endHours":10.662900954980879,"quality":"auspicious"},{"name":"Roga","start":"10:40","end":"12:25","startHours":10.662900954980879,"endHours":12.419898858189558,"quality":"inauspicious"},{"name":"Udveg","start":"12:25","end":"14:11","startHours":12.419898858189558,"endHours":14.17689676139824,"quality":"inauspicious"},{"name":"Chala","start":"14:11","end":"15:56","startHours":14.17689676139824,"endHours":15.93389466460692,"quality":"neutral"},{"name":"Labha","start":"15:56","end":"17:41","startHours":15.93389466460692,"endHours":17.690892567815602,"quality":"auspicious"},{"name":"Amṛta","start":"17:41","end":"19:27","startHours":17.690892567815602,"endHours":19.44789047102428,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:27","end":"20:41","startHours":19.44789047102428,"endHours":20.6908925678156,"quality":"neutral"},{"name":"Labha","start":"20:41","end":"21:56","startHours":20.6908925678156,"endHours":21.93389466460692,"quality":"auspicious"},{"name":"Amṛta","start":"21:56","end":"23:11","startHours":21.93389466460692,"endHours":23.17689676139824,"quality":"auspicious"},{"name":"Kāla","start":"23:11","end":"00:25","startHours":23.17689676139824,"endHours":24.41989885818956,"quality":"inauspicious"},{"name":"Śubha","start":"00:25","end":"01:40","startHours":24.41989885818956,"endHours":25.662900954980877,"quality":"auspicious"},{"name":"Roga","start":"01:40","end":"02:54","startHours":25.662900954980877,"endHours":26.9059030517722,"quality":"inauspicious"},{"name":"Udveg","start":"02:54","end":"04:09","startHours":26.9059030517722,"endHours":28.148905148563518,"quality":"inauspicious"},{"name":"Chala","start":"04:09","end":"05:24","startHours":28.148905148563518,"endHours":29.391907245354837,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.3919072453548385,"endHours":6.3919072453548385,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.3919072453548385,"endHours":7.3919072453548385,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.3919072453548385,"endHours":8.391907245354838,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.391907245354838,"endHours":9.391907245354838,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.391907245354838,"endHours":10.391907245354838,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.391907245354838,"endHours":11.391907245354838,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.391907245354838,"endHours":12.391907245354838,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.391907245354838,"endHours":13.391907245354838,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.391907245354838,"endHours":14.391907245354838,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.391907245354838,"endHours":15.391907245354838,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.391907245354838,"endHours":16.391907245354837,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.391907245354837,"endHours":17.391907245354837,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.391907245354837,"endHours":18.391907245354837,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.391907245354837,"endHours":19.391907245354837,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.391907245354837,"endHours":20.391907245354837,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.391907245354837,"endHours":21.391907245354837,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.391907245354837,"endHours":22.391907245354837,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.391907245354837,"endHours":23.391907245354837,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.391907245354837,"endHours":24.391907245354837,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.391907245354837,"endHours":25.391907245354837,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.391907245354837,"endHours":26.391907245354837,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.391907245354837,"endHours":27.391907245354837,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.391907245354837,"endHours":28.391907245354837,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.391907245354837,"endHours":29.391907245354837,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.642034534778407,"eotMinutes":-8.635931491373626,"ayanamsa":21.6184}},"calendars":{"vikram_samvat":1897,"vikram_samvatsara":"Pramādī","saka_samvat":1762,"saka_samvatsara":"Śārvarī","bengali_samvat":1247,"malayalam_era":1016,"nanakshahi_year":371,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","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":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Navamī · Vikram 1897 Pramādī · Śaka 1762 Śārvarī"},"festivals":[],"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":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","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 13, 1840 CE · Perth, Australia · Vidhyamitra","description":"January 13, 1840 CE for Perth, Australia: Śukla Navamī, sūryodaya 05:24, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1840-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1840-01-13","sa":"https://sa.vidhyamitra.com/city/perth/1840-01-13","hi":"https://hi.vidhyamitra.com/city/perth/1840-01-13","x-default":"https://vidhyamitra.com/city/perth/1840-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T08:37:37.015Z","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":"2026-06-03T08:37:37.015Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T08:37:37.015Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}