{"id":"vidhyamitra:city-day:perth:2148-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2148-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2148-02-13","date_display":"February 13, 2148 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":2148,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2505643.770833,"kali_year":5249,"ahargana":1917178.2708,"sun":{"sidereal_longitude":297.5333,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":212.2454,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":274.7122,"elapsed_within_tithi_degrees":10.7122},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":212.2454,"elapsed_within_degrees":12.2454},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.7787},"karana":{"half_tithi_index":45,"name":"Kaulava"},"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":2148,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2505643.770833,"ahargana":1917178.2708,"kali_year":5249,"ayanamsa_lahiri":25.9221,"grahas":{"sun":{"sidereal_longitude":297.80394,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":209.07814000000008,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false,"latitude":4.4912},"mars":{"sidereal_longitude":254.38563999999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":273.73594,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":192.76804000000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":342.38624,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":25.898840000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":118.6691,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":298.6691,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"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":2148,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2505643.770833,"kali_year":5249,"ahargana":1917178.2708,"sun":{"sidereal_longitude":297.5333,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":212.2454,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":274.7122,"elapsed_within_tithi_degrees":10.7122},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":212.2454,"elapsed_within_degrees":12.2454},"yoga":{"number":12,"name":"Dhruva","sum_longitude":149.7787},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.491,"elongation":85.288},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.491,"opposition_distance":94.712}},"eclipse_window_40days":[{"offset_days":7,"type":"solar","occurs":true,"moon_latitude":-0.565,"elongation":0.88}]},"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":"05:52","sunsetLocal":"19:10","solarNoonLocal":"12:31","dayLengthHours":13.294415663774927,"dayLengthDisplay":"13 Hours 17 Mins 40 Secs","nightLengthDisplay":"10 Hours 42 Mins 20 Secs","moonriseLocal":"23:44","moonsetLocal":"13:29","rahuKala":{"name":"Rāhu Kāla","start":"15:51","end":"17:30","startHours":15.842896003620766,"endHours":17.504697961592633,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:12","end":"10:51","startHours":9.195688171733302,"endHours":10.85749012970517,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"14:11","startHours":12.519292087677034,"endHours":14.181094045648901,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:25","startHours":8.974114577337055,"endHours":9.417261766129553,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:26","end":"06:47","startHours":6.426018241780193,"endHours":6.780535992814191,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:58","startHours":12.076144898884536,"endHours":12.962439276469532,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:06","end":"04:59","startHours":4.099495500619581,"endHours":4.985789878204576,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:46","end":"05:52","startHours":4.764216283808327,"endHours":5.872084255789571,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:37","startHours":14.735028031639523,"endHours":15.621322409224518,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:58","end":"19:22","startHours":18.966499919564498,"endHours":19.366499919564497,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:10","end":"19:43","startHours":19.166499919564497,"endHours":19.72043390555512,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:55","end":"20:40","startHours":18.916499919564497,"endHours":20.666499919564497,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:58","startHours":24.076144898884536,"endHours":24.96243927646953,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:52","end":"07:32","startHours":5.872084255789571,"endHours":7.533886213761437,"quality":"inauspicious"},{"name":"Udveg","start":"07:32","end":"09:12","startHours":7.533886213761437,"endHours":9.195688171733302,"quality":"inauspicious"},{"name":"Chala","start":"09:12","end":"10:51","startHours":9.195688171733302,"endHours":10.85749012970517,"quality":"neutral"},{"name":"Labha","start":"10:51","end":"12:31","startHours":10.85749012970517,"endHours":12.519292087677034,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"14:11","startHours":12.519292087677034,"endHours":14.181094045648901,"quality":"auspicious"},{"name":"Kāla","start":"14:11","end":"15:51","startHours":14.181094045648901,"endHours":15.842896003620766,"quality":"inauspicious"},{"name":"Śubha","start":"15:51","end":"17:30","startHours":15.842896003620766,"endHours":17.504697961592633,"quality":"auspicious"},{"name":"Roga","start":"17:30","end":"19:10","startHours":17.504697961592633,"endHours":19.166499919564497,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:10","end":"20:30","startHours":19.166499919564497,"endHours":20.504697961592633,"quality":"inauspicious"},{"name":"Śubha","start":"20:30","end":"21:51","startHours":20.504697961592633,"endHours":21.842896003620766,"quality":"auspicious"},{"name":"Roga","start":"21:51","end":"23:11","startHours":21.842896003620766,"endHours":23.181094045648898,"quality":"inauspicious"},{"name":"Udveg","start":"23:11","end":"00:31","startHours":23.181094045648898,"endHours":24.519292087677034,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"01:51","startHours":24.519292087677034,"endHours":25.85749012970517,"quality":"neutral"},{"name":"Labha","start":"01:51","end":"03:12","startHours":25.85749012970517,"endHours":27.195688171733302,"quality":"auspicious"},{"name":"Amṛta","start":"03:12","end":"04:32","startHours":27.195688171733302,"endHours":28.533886213761434,"quality":"auspicious"},{"name":"Kāla","start":"04:32","end":"05:52","startHours":28.533886213761434,"endHours":29.87208425578957,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:52","end":"06:52","startHours":5.872084255789571,"endHours":6.872084255789571,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:52","end":"07:52","startHours":6.872084255789571,"endHours":7.872084255789571,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:52","end":"08:52","startHours":7.872084255789571,"endHours":8.87208425578957,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:52","end":"09:52","startHours":8.87208425578957,"endHours":9.87208425578957,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:52","end":"10:52","startHours":9.87208425578957,"endHours":10.87208425578957,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:52","end":"11:52","startHours":10.87208425578957,"endHours":11.87208425578957,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:52","end":"12:52","startHours":11.87208425578957,"endHours":12.87208425578957,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:52","end":"13:52","startHours":12.87208425578957,"endHours":13.87208425578957,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:52","end":"14:52","startHours":13.87208425578957,"endHours":14.87208425578957,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:52","end":"15:52","startHours":14.87208425578957,"endHours":15.87208425578957,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:52","end":"16:52","startHours":15.87208425578957,"endHours":16.87208425578957,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:52","end":"17:52","startHours":16.87208425578957,"endHours":17.87208425578957,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:52","end":"18:52","startHours":17.87208425578957,"endHours":18.87208425578957,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:52","end":"19:52","startHours":18.87208425578957,"endHours":19.87208425578957,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:52","end":"20:52","startHours":19.87208425578957,"endHours":20.87208425578957,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:52","end":"21:52","startHours":20.87208425578957,"endHours":21.87208425578957,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:52","end":"22:52","startHours":21.87208425578957,"endHours":22.87208425578957,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:52","end":"23:52","startHours":22.87208425578957,"endHours":23.87208425578957,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:52","end":"00:52","startHours":23.87208425578957,"endHours":24.87208425578957,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:52","end":"01:52","startHours":24.87208425578957,"endHours":25.87208425578957,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:52","end":"02:52","startHours":25.87208425578957,"endHours":26.87208425578957,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:52","end":"03:52","startHours":26.87208425578957,"endHours":27.87208425578957,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:52","end":"04:52","startHours":27.87208425578957,"endHours":28.87208425578957,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:52","end":"05:52","startHours":28.87208425578957,"endHours":29.87208425578957,"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":-13.610318551779812,"eotMinutes":-14.599525260622107,"ayanamsa":25.9221}},"calendars":{"vikram_samvat":2205,"vikram_samvatsara":"Durmati","saka_samvat":2070,"saka_samvatsara":"Kīlaka","bengali_samvat":1555,"malayalam_era":1324,"nanakshahi_year":679,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","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":"Phālguna Kṛṣṇa Aṣṭamī · Vikram 2205 Durmati · Śaka 2070 Kīlaka"},"festivals":[{"id":"sitashtami","name":"Sītāṣṭamī","name_sanskrit":"सीताष्टमी","tradition":"Vaishnava","associated_deity":"Sītā Devī","significance":"Birth-anniversary of Sītā per Phālguna-Kṛṣṇa-Aṣṭamī tradition.","vrata":true,"detection":{"tithi_number":23,"tithi_paksha":"Kṛṣṇa","lunar_month":"Phālguna"},"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":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5},{"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 February 13, 2148 CE · Perth, Australia · Vidhyamitra","description":"February 13, 2148 CE for Perth, Australia: Kṛṣṇa Aṣṭamī, sūryodaya 05:52, sūryāsta 19:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2148-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2148-02-13","sa":"https://sa.vidhyamitra.com/city/perth/2148-02-13","hi":"https://hi.vidhyamitra.com/city/perth/2148-02-13","x-default":"https://vidhyamitra.com/city/perth/2148-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:18:13.339Z","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":"2026-05-31T06:18:13.339Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:18:13.339Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}