{"id":"vidhyamitra:city-day:perth:1901-01-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1901-01-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1901-01-12","date_display":"January 12, 1901 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":1901,"month":1,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415396.770833,"kali_year":5002,"ahargana":1826931.2708,"sun":{"sidereal_longitude":268.7947,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":170.9429,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.1482,"elapsed_within_tithi_degrees":10.1482},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.9429,"elapsed_within_degrees":10.9429},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.7376},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1901,"month":1,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2415396.770833,"ahargana":1826931.2708,"kali_year":5002,"ayanamsa_lahiri":22.4705,"grahas":{"sun":{"sidereal_longitude":268.69193799999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":169.90893800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":-3.4176},"mars":{"sidereal_longitude":141.387838,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":263.84903800000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":247.424038,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"venus":{"sidereal_longitude":243.3967379999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":257.715338,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":220.3895,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":40.3895,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":1901,"month":1,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415396.770833,"kali_year":5002,"ahargana":1826931.2708,"sun":{"sidereal_longitude":268.7947,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":170.9429,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.1482,"elapsed_within_tithi_degrees":10.1482},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.9429,"elapsed_within_degrees":10.9429},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.7376},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.418,"elongation":97.852},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.418,"opposition_distance":82.148}},"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":"05:23","sunsetLocal":"19:27","solarNoonLocal":"12:25","dayLengthHours":14.069078512496763,"dayLengthDisplay":"14 Hours 04 Mins 09 Secs","nightLengthDisplay":"9 Hours 55 Mins 51 Secs","moonriseLocal":"23:35","moonsetLocal":"12:05","rahuKala":{"name":"Rāhu Kāla","start":"08:54","end":"10:39","startHours":8.896455082482108,"endHours":10.655089896544204,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:10","end":"15:56","startHours":14.172359524668394,"endHours":15.930994338730489,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:23","end":"07:08","startHours":5.379185454357917,"endHours":7.137820268420013,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:08","startHours":8.661970440607162,"endHours":9.130939724357054,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:58","end":"06:20","startHours":5.965397059045282,"endHours":6.340572486045195,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:53","startHours":11.944755426856405,"endHours":12.88269399435619,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:30","end":"04:26","startHours":3.5033083193583487,"endHours":4.441246886858133,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:12","end":"05:23","startHours":4.206762244983187,"endHours":5.379185454357917,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:42","startHours":14.758571129355758,"endHours":15.696509696855543,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24826396685468,"endHours":19.648263966854678,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44826396685468,"endHours":20.034475571542043,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19826396685468,"endHours":20.94826396685468,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:53","startHours":23.944755426856403,"endHours":24.88269399435619,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:23","end":"07:08","startHours":5.379185454357917,"endHours":7.137820268420013,"quality":"inauspicious"},{"name":"Śubha","start":"07:08","end":"08:54","startHours":7.137820268420013,"endHours":8.896455082482108,"quality":"auspicious"},{"name":"Roga","start":"08:54","end":"10:39","startHours":8.896455082482108,"endHours":10.655089896544204,"quality":"inauspicious"},{"name":"Udveg","start":"10:39","end":"12:25","startHours":10.655089896544204,"endHours":12.4137247106063,"quality":"inauspicious"},{"name":"Chala","start":"12:25","end":"14:10","startHours":12.4137247106063,"endHours":14.172359524668394,"quality":"neutral"},{"name":"Labha","start":"14:10","end":"15:56","startHours":14.172359524668394,"endHours":15.930994338730489,"quality":"auspicious"},{"name":"Amṛta","start":"15:56","end":"17:41","startHours":15.930994338730489,"endHours":17.689629152792584,"quality":"auspicious"},{"name":"Kāla","start":"17:41","end":"19:27","startHours":17.689629152792584,"endHours":19.44826396685468,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:27","end":"20:41","startHours":19.44826396685468,"endHours":20.689629152792584,"quality":"auspicious"},{"name":"Amṛta","start":"20:41","end":"21:56","startHours":20.689629152792584,"endHours":21.93099433873049,"quality":"auspicious"},{"name":"Kāla","start":"21:56","end":"23:10","startHours":21.93099433873049,"endHours":23.172359524668394,"quality":"inauspicious"},{"name":"Śubha","start":"23:10","end":"00:25","startHours":23.172359524668394,"endHours":24.413724710606296,"quality":"auspicious"},{"name":"Roga","start":"00:25","end":"01:39","startHours":24.413724710606296,"endHours":25.655089896544204,"quality":"inauspicious"},{"name":"Udveg","start":"01:39","end":"02:54","startHours":25.655089896544204,"endHours":26.896455082482106,"quality":"inauspicious"},{"name":"Chala","start":"02:54","end":"04:08","startHours":26.896455082482106,"endHours":28.13782026842001,"quality":"neutral"},{"name":"Labha","start":"04:08","end":"05:23","startHours":28.13782026842001,"endHours":29.379185454357916,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:23","end":"06:23","startHours":5.379185454357917,"endHours":6.379185454357917,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:23","end":"07:23","startHours":6.379185454357917,"endHours":7.379185454357917,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:23","end":"08:23","startHours":7.379185454357917,"endHours":8.379185454357916,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:23","end":"09:23","startHours":8.379185454357916,"endHours":9.379185454357916,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:23","end":"10:23","startHours":9.379185454357916,"endHours":10.379185454357916,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:23","end":"11:23","startHours":10.379185454357916,"endHours":11.379185454357916,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:23","end":"12:23","startHours":11.379185454357916,"endHours":12.379185454357916,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:23","end":"13:23","startHours":12.379185454357916,"endHours":13.379185454357916,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:23","end":"14:23","startHours":13.379185454357916,"endHours":14.379185454357916,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:23","end":"15:23","startHours":14.379185454357916,"endHours":15.379185454357916,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:23","end":"16:23","startHours":15.379185454357916,"endHours":16.379185454357916,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:23","end":"17:23","startHours":16.379185454357916,"endHours":17.379185454357916,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:23","end":"18:23","startHours":17.379185454357916,"endHours":18.379185454357916,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:23","end":"19:23","startHours":18.379185454357916,"endHours":19.379185454357916,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:23","end":"20:23","startHours":19.379185454357916,"endHours":20.379185454357916,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:23","end":"21:23","startHours":20.379185454357916,"endHours":21.379185454357916,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:23","end":"22:23","startHours":21.379185454357916,"endHours":22.379185454357916,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:23","end":"23:23","startHours":22.379185454357916,"endHours":23.379185454357916,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:23","end":"00:23","startHours":23.379185454357916,"endHours":24.379185454357916,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:23","end":"01:23","startHours":24.379185454357916,"endHours":25.379185454357916,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:23","end":"02:23","startHours":25.379185454357916,"endHours":26.379185454357916,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:23","end":"03:23","startHours":26.379185454357916,"endHours":27.379185454357916,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:23","end":"04:23","startHours":27.379185454357916,"endHours":28.379185454357916,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:23","end":"05:23","startHours":28.379185454357916,"endHours":29.379185454357916,"planetary_lord":"Mercury"}],"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.771728840503677,"eotMinutes":-8.265482636377905,"ayanamsa":22.4705}},"calendars":{"vikram_samvat":1958,"vikram_samvatsara":"Ānanda","saka_samvat":1823,"saka_samvatsara":"Plava","bengali_samvat":1308,"malayalam_era":1077,"nanakshahi_year":432,"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":"Dhanus (Mārgaḻi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Saptamī · Vikram 1958 Ānanda · Śaka 1823 Plava"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi_eve_of_ingress":"Makara"},"precedence":4}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 12, 1901 CE · Perth, Australia · Vidhyamitra","description":"January 12, 1901 CE for Perth, Australia: Kṛṣṇa Saptamī, sūryodaya 05:23, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1901-01-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1901-01-12","sa":"https://sa.vidhyamitra.com/city/perth/1901-01-12","hi":"https://hi.vidhyamitra.com/city/perth/1901-01-12","x-default":"https://vidhyamitra.com/city/perth/1901-01-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T02:46:47.828Z","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":"2026-06-01T02:46:47.828Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T02:46:47.828Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}