{"id":"vidhyamitra:city-day:perth:-3136-02-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/-3136-02-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3136-02-16","date_display":"February 16, 3137 BCE","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":-3136,"month":2,"day":16,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575679.770833,"kali_year":-35,"ahargana":-12785.7292,"sun":{"sidereal_longitude":0.6544,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.5422,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":16.8878,"elapsed_within_tithi_degrees":4.8878},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.5422,"elapsed_within_degrees":4.2089},"yoga":{"number":2,"name":"Prīti","sum_longitude":18.1966},"karana":{"half_tithi_index":2,"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":-3136,"month":2,"day":16,"hour":6,"minute":30,"calendar":"julian"},"julian_day":575679.770833,"ahargana":-12785.7292,"kali_year":-35,"ayanamsa_lahiri":-47.8918,"grahas":{"sun":{"sidereal_longitude":0.6544,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":17.5422,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":-3.8998},"mars":{"sidereal_longitude":103.0525,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":333.1603,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":17.124,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":14.8865,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":290.5522,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":137.4495,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":317.4495,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"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":-3136,"month":2,"day":16,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":575679.770833,"kali_year":-35,"ahargana":-12785.7292,"sun":{"sidereal_longitude":0.6544,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.5422,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":16.8878,"elapsed_within_tithi_degrees":4.8878},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.5422,"elapsed_within_degrees":4.2089},"yoga":{"number":2,"name":"Prīti","sum_longitude":18.1966},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.9,"elongation":16.888},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.9,"opposition_distance":163.112}},"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":"05:43","sunsetLocal":"19:19","solarNoonLocal":"12:31","dayLengthHours":13.60324672041306,"dayLengthDisplay":"13 Hours 36 Mins 12 Secs","nightLengthDisplay":"10 Hours 23 Mins 48 Secs","moonriseLocal":"07:06","moonsetLocal":"20:11","rahuKala":{"name":"Rāhu Kāla","start":"07:25","end":"09:07","startHours":7.417049289877707,"endHours":9.11745512992934,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:49","end":"12:31","startHours":10.817860969980972,"endHours":12.518266810032603,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:13","end":"15:55","startHours":14.218672650084237,"endHours":15.919078490135869,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:21","startHours":8.890734351255787,"endHours":9.34417590860289,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:17","end":"06:39","startHours":6.283445396509952,"endHours":6.646198642387634,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.064825252685502,"endHours":12.971708367379705,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:54","end":"04:49","startHours":3.9028772204376665,"endHours":4.8097603351318705,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:35","end":"05:43","startHours":4.58303955645832,"endHours":5.7166434498260745,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.785474596768113,"endHours":15.692357711462316,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:07","end":"19:31","startHours":19.119890170239135,"endHours":19.519890170239133,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:19","end":"19:53","startHours":19.319890170239134,"endHours":19.88669211692301,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:04","end":"20:49","startHours":19.069890170239134,"endHours":20.819890170239134,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.0648252526855,"endHours":24.971708367379705,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:43","end":"07:25","startHours":5.7166434498260745,"endHours":7.417049289877707,"quality":"auspicious"},{"name":"Kāla","start":"07:25","end":"09:07","startHours":7.417049289877707,"endHours":9.11745512992934,"quality":"inauspicious"},{"name":"Śubha","start":"09:07","end":"10:49","startHours":9.11745512992934,"endHours":10.817860969980972,"quality":"auspicious"},{"name":"Roga","start":"10:49","end":"12:31","startHours":10.817860969980972,"endHours":12.518266810032603,"quality":"inauspicious"},{"name":"Udveg","start":"12:31","end":"14:13","startHours":12.518266810032603,"endHours":14.218672650084237,"quality":"inauspicious"},{"name":"Chala","start":"14:13","end":"15:55","startHours":14.218672650084237,"endHours":15.919078490135869,"quality":"neutral"},{"name":"Labha","start":"15:55","end":"17:37","startHours":15.919078490135869,"endHours":17.619484330187504,"quality":"auspicious"},{"name":"Amṛta","start":"17:37","end":"19:19","startHours":17.619484330187504,"endHours":19.319890170239134,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:19","end":"20:37","startHours":19.319890170239134,"endHours":20.6194843301875,"quality":"neutral"},{"name":"Labha","start":"20:37","end":"21:55","startHours":20.6194843301875,"endHours":21.91907849013587,"quality":"auspicious"},{"name":"Amṛta","start":"21:55","end":"23:13","startHours":21.91907849013587,"endHours":23.218672650084237,"quality":"auspicious"},{"name":"Kāla","start":"23:13","end":"00:31","startHours":23.218672650084237,"endHours":24.518266810032603,"quality":"inauspicious"},{"name":"Śubha","start":"00:31","end":"01:49","startHours":24.518266810032603,"endHours":25.81786096998097,"quality":"auspicious"},{"name":"Roga","start":"01:49","end":"03:07","startHours":25.81786096998097,"endHours":27.11745512992934,"quality":"inauspicious"},{"name":"Udveg","start":"03:07","end":"04:25","startHours":27.11745512992934,"endHours":28.417049289877706,"quality":"inauspicious"},{"name":"Chala","start":"04:25","end":"05:43","startHours":28.417049289877706,"endHours":29.716643449826073,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:43","end":"06:43","startHours":5.7166434498260745,"endHours":6.7166434498260745,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:43","end":"07:43","startHours":6.7166434498260745,"endHours":7.7166434498260745,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:43","end":"08:43","startHours":7.7166434498260745,"endHours":8.716643449826075,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:43","end":"09:43","startHours":8.716643449826075,"endHours":9.716643449826075,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:43","end":"10:43","startHours":9.716643449826075,"endHours":10.716643449826075,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:43","end":"11:43","startHours":10.716643449826075,"endHours":11.716643449826075,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:43","end":"12:43","startHours":11.716643449826075,"endHours":12.716643449826075,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:43","end":"13:43","startHours":12.716643449826075,"endHours":13.716643449826075,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:43","end":"14:43","startHours":13.716643449826075,"endHours":14.716643449826075,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:43","end":"15:43","startHours":14.716643449826075,"endHours":15.716643449826075,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:43","end":"16:43","startHours":15.716643449826075,"endHours":16.716643449826073,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:43","end":"17:43","startHours":16.716643449826073,"endHours":17.716643449826073,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:43","end":"18:43","startHours":17.716643449826073,"endHours":18.716643449826073,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:43","end":"19:43","startHours":18.716643449826073,"endHours":19.716643449826073,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:43","end":"20:43","startHours":19.716643449826073,"endHours":20.716643449826073,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:43","end":"21:43","startHours":20.716643449826073,"endHours":21.716643449826073,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:43","end":"22:43","startHours":21.716643449826073,"endHours":22.716643449826073,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:43","end":"23:43","startHours":22.716643449826073,"endHours":23.716643449826073,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:43","end":"00:43","startHours":23.716643449826073,"endHours":24.716643449826073,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:43","end":"01:43","startHours":24.716643449826073,"endHours":25.716643449826073,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:43","end":"02:43","startHours":25.716643449826073,"endHours":26.716643449826073,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:43","end":"03:43","startHours":26.716643449826073,"endHours":27.716643449826073,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:43","end":"04:43","startHours":27.716643449826073,"endHours":28.716643449826073,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:43","end":"05:43","startHours":28.716643449826073,"endHours":29.716643449826073,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"undefined (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-16.978001884096763,"eotMinutes":-14.538008601956186,"ayanamsa":-47.8918}},"calendars":{"vikram_samvat":-3079,"saka_samvat":-3214,"bengali_samvat":-3729,"malayalam_era":-3960,"nanakshahi_year":-4605,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Dvitīyā · Vikram -3079 undefined · Śaka -3214 undefined"},"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":[]},"validity":{"eternal":true,"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 16, 3137 BCE · Perth, Australia · Vidhyamitra","description":"February 16, 3137 BCE for Perth, Australia: Śukla Dvitīyā, sūryodaya 05:43, sūryāsta 19:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/-3136-02-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/-3136-02-16","sa":"https://sa.vidhyamitra.com/city/perth/-3136-02-16","hi":"https://hi.vidhyamitra.com/city/perth/-3136-02-16","x-default":"https://vidhyamitra.com/city/perth/-3136-02-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:30:25.364Z","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":"2026-05-31T19:30:25.364Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:30:25.364Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}