{"id":"vidhyamitra:city-day:perth:1982-02-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1982-02-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1982-02-17","date_display":"February 17, 1982 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":1982,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445017.770833,"kali_year":5083,"ahargana":1856552.2708,"sun":{"sidereal_longitude":304.5966,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":226.5053,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":281.9087,"elapsed_within_tithi_degrees":5.9087},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":226.5053,"elapsed_within_degrees":13.172},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":171.1018},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1982,"month":2,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445017.770833,"ahargana":1856552.2708,"kali_year":5083,"ayanamsa_lahiri":23.6034,"grahas":{"sun":{"sidereal_longitude":304.44579799999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":227.41839800000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":3.148},"mars":{"sidereal_longitude":175.641298,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":280.304798,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":197.08409800000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":270.61429799999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":178.12869799999999,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":90.9263,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":270.9263,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1982,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445017.770833,"kali_year":5083,"ahargana":1856552.2708,"sun":{"sidereal_longitude":304.5966,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":226.5053,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":281.9087,"elapsed_within_tithi_degrees":5.9087},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":226.5053,"elapsed_within_degrees":13.172},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":171.1018},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.148,"elongation":78.091},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.148,"opposition_distance":101.909}},"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":"05:56","sunsetLocal":"19:06","solarNoonLocal":"12:31","dayLengthHours":13.164181147824744,"dayLengthDisplay":"13 Hours 09 Mins 51 Secs","nightLengthDisplay":"10 Hours 50 Mins 09 Secs","moonriseLocal":"00:21","moonsetLocal":"14:25","rahuKala":{"name":"Rāhu Kāla","start":"12:31","end":"14:10","startHours":12.517509472522267,"endHours":14.163032116000359,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:35","end":"09:14","startHours":7.580941542087987,"endHours":9.22646418556608,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:52","end":"12:31","startHours":10.871986829044173,"endHours":12.517509472522267,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:27","startHours":9.007061166435669,"endHours":9.445867204696492,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:29","end":"06:50","startHours":6.483926446435925,"endHours":6.834971277044585,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:57","startHours":12.078703434261442,"endHours":12.956315510783092,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:11","end":"05:03","startHours":4.180194745566595,"endHours":5.057806822088245,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:50","end":"05:56","startHours":4.838403802957832,"endHours":5.935418898609894,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:35","startHours":14.711539663826391,"endHours":15.589151740348042,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:54","end":"19:18","startHours":18.89960004643464,"endHours":19.299600046434637,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:06","end":"19:39","startHours":19.099600046434638,"endHours":19.64810759426067,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:51","end":"20:36","startHours":18.849600046434638,"endHours":20.599600046434638,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:57","startHours":24.078703434261442,"endHours":24.956315510783092,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:56","end":"07:35","startHours":5.935418898609894,"endHours":7.580941542087987,"quality":"auspicious"},{"name":"Amṛta","start":"07:35","end":"09:14","startHours":7.580941542087987,"endHours":9.22646418556608,"quality":"auspicious"},{"name":"Kāla","start":"09:14","end":"10:52","startHours":9.22646418556608,"endHours":10.871986829044173,"quality":"inauspicious"},{"name":"Śubha","start":"10:52","end":"12:31","startHours":10.871986829044173,"endHours":12.517509472522267,"quality":"auspicious"},{"name":"Roga","start":"12:31","end":"14:10","startHours":12.517509472522267,"endHours":14.163032116000359,"quality":"inauspicious"},{"name":"Udveg","start":"14:10","end":"15:49","startHours":14.163032116000359,"endHours":15.808554759478453,"quality":"inauspicious"},{"name":"Chala","start":"15:49","end":"17:27","startHours":15.808554759478453,"endHours":17.454077402956543,"quality":"neutral"},{"name":"Labha","start":"17:27","end":"19:06","startHours":17.454077402956543,"endHours":19.099600046434638,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:06","end":"20:27","startHours":19.099600046434638,"endHours":20.454077402956546,"quality":"inauspicious"},{"name":"Chala","start":"20:27","end":"21:49","startHours":20.454077402956546,"endHours":21.80855475947845,"quality":"neutral"},{"name":"Labha","start":"21:49","end":"23:10","startHours":21.80855475947845,"endHours":23.16303211600036,"quality":"auspicious"},{"name":"Amṛta","start":"23:10","end":"00:31","startHours":23.16303211600036,"endHours":24.517509472522267,"quality":"auspicious"},{"name":"Kāla","start":"00:31","end":"01:52","startHours":24.517509472522267,"endHours":25.871986829044175,"quality":"inauspicious"},{"name":"Śubha","start":"01:52","end":"03:14","startHours":25.871986829044175,"endHours":27.22646418556608,"quality":"auspicious"},{"name":"Roga","start":"03:14","end":"04:35","startHours":27.22646418556608,"endHours":28.580941542087988,"quality":"inauspicious"},{"name":"Udveg","start":"04:35","end":"05:56","startHours":28.580941542087988,"endHours":29.935418898609896,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.935418898609894,"endHours":6.935418898609894,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.935418898609894,"endHours":7.935418898609894,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.935418898609894,"endHours":8.935418898609894,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.935418898609894,"endHours":9.935418898609894,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.935418898609894,"endHours":10.935418898609894,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.935418898609894,"endHours":11.935418898609894,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.935418898609894,"endHours":12.935418898609894,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.935418898609894,"endHours":13.935418898609894,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.935418898609894,"endHours":14.935418898609894,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.935418898609894,"endHours":15.935418898609894,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.935418898609894,"endHours":16.935418898609896,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.935418898609896,"endHours":17.935418898609896,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.935418898609896,"endHours":18.935418898609896,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.935418898609896,"endHours":19.935418898609896,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.935418898609896,"endHours":20.935418898609896,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.935418898609896,"endHours":21.935418898609896,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.935418898609896,"endHours":22.935418898609896,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.935418898609896,"endHours":23.935418898609896,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.935418898609896,"endHours":24.935418898609896,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.935418898609896,"endHours":25.935418898609896,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.935418898609896,"endHours":26.935418898609896,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.935418898609896,"endHours":27.935418898609896,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.935418898609896,"endHours":28.935418898609896,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.935418898609896,"endHours":29.935418898609896,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"North-East","rahuVasa":"South-West","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"drikRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-12.150271387570548,"eotMinutes":-14.492568351336082,"ayanamsa":23.6034}},"calendars":{"vikram_samvat":2039,"vikram_samvatsara":"Yuva","saka_samvat":1904,"saka_samvatsara":"Dundubhi","bengali_samvat":1389,"malayalam_era":1158,"nanakshahi_year":513,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Navamī · Vikram 2039 Yuva · Śaka 1904 Dundubhi"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 February 17, 1982 CE · Perth, Australia · Vidhyamitra","description":"February 17, 1982 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 05:56, sūryāsta 19:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1982-02-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1982-02-17","sa":"https://sa.vidhyamitra.com/city/perth/1982-02-17","hi":"https://hi.vidhyamitra.com/city/perth/1982-02-17","x-default":"https://vidhyamitra.com/city/perth/1982-02-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T02:57:49.190Z","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":"2026-05-19T02:57:49.190Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T02:57:49.190Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}