{"id":"vidhyamitra:city-day:perth:1990-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1990-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-02-07","date_display":"February 7, 1990 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":1990,"month":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447929.770833,"kali_year":5091,"ahargana":1859464.2708,"sun":{"sidereal_longitude":294.3596,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":80.9771,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.6175,"elapsed_within_tithi_degrees":2.6175},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":80.9771,"elapsed_within_degrees":0.9771},"yoga":{"number":2,"name":"Prīti","sum_longitude":15.3367},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":1990,"month":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447929.770833,"ahargana":1859464.2708,"kali_year":5091,"ayanamsa_lahiri":23.7147,"grahas":{"sun":{"sidereal_longitude":294.281239,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":79.89573899999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false,"latitude":2.6214},"mars":{"sidereal_longitude":252.53023899999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":269.94093900000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":67.76983899999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":267.20633900000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":265.946139,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":296.6346,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":116.6346,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1990,"month":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447929.770833,"kali_year":5091,"ahargana":1859464.2708,"sun":{"sidereal_longitude":294.3596,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":80.9771,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.6175,"elapsed_within_tithi_degrees":2.6175},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":80.9771,"elapsed_within_degrees":0.9771},"yoga":{"number":2,"name":"Prīti","sum_longitude":15.3367},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.621,"elongation":146.618},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.621,"opposition_distance":33.382}},"eclipse_window_40days":[{"offset_days":-11,"type":"solar","occurs":true,"moon_latitude":-0.956,"elongation":1.82}]},"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":"05:47","sunsetLocal":"19:15","solarNoonLocal":"12:31","dayLengthHours":13.46021113159936,"dayLengthDisplay":"13 Hours 27 Mins 37 Secs","nightLengthDisplay":"10 Hours 32 Mins 23 Secs","moonriseLocal":"17:11","moonsetLocal":"03:16","rahuKala":{"name":"Rāhu Kāla","start":"12:31","end":"14:12","startHours":12.515594208489443,"endHours":14.198120599939362,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:28","end":"09:09","startHours":7.468015034139682,"endHours":9.150541425589601,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:50","end":"12:31","startHours":10.833067817039522,"endHours":12.515594208489443,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:56","end":"09:22","startHours":8.92620457339628,"endHours":9.374878277782924,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:21","end":"06:42","startHours":6.346330773173069,"endHours":6.705269736682385,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.066920504102796,"endHours":12.964267912876089,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:53","startHours":3.9907938251431805,"endHours":4.888141233916471,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:40","end":"05:47","startHours":4.663804381723148,"endHours":5.785488642689762,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:39","startHours":14.758962730422668,"endHours":15.65631013919596,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:03","end":"19:27","startHours":19.045699774289123,"endHours":19.44569977428912,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:15","end":"19:48","startHours":19.245699774289122,"endHours":19.806541904772427,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:00","end":"20:45","startHours":18.995699774289122,"endHours":20.745699774289122,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.066920504102796,"endHours":24.96426791287609,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:47","end":"07:28","startHours":5.785488642689762,"endHours":7.468015034139682,"quality":"auspicious"},{"name":"Amṛta","start":"07:28","end":"09:09","startHours":7.468015034139682,"endHours":9.150541425589601,"quality":"auspicious"},{"name":"Kāla","start":"09:09","end":"10:50","startHours":9.150541425589601,"endHours":10.833067817039522,"quality":"inauspicious"},{"name":"Śubha","start":"10:50","end":"12:31","startHours":10.833067817039522,"endHours":12.515594208489443,"quality":"auspicious"},{"name":"Roga","start":"12:31","end":"14:12","startHours":12.515594208489443,"endHours":14.198120599939362,"quality":"inauspicious"},{"name":"Udveg","start":"14:12","end":"15:53","startHours":14.198120599939362,"endHours":15.880646991389282,"quality":"inauspicious"},{"name":"Chala","start":"15:53","end":"17:34","startHours":15.880646991389282,"endHours":17.563173382839203,"quality":"neutral"},{"name":"Labha","start":"17:34","end":"19:15","startHours":17.563173382839203,"endHours":19.245699774289122,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:15","end":"20:34","startHours":19.245699774289122,"endHours":20.563173382839203,"quality":"inauspicious"},{"name":"Chala","start":"20:34","end":"21:53","startHours":20.563173382839203,"endHours":21.88064699138928,"quality":"neutral"},{"name":"Labha","start":"21:53","end":"23:12","startHours":21.88064699138928,"endHours":23.19812059993936,"quality":"auspicious"},{"name":"Amṛta","start":"23:12","end":"00:31","startHours":23.19812059993936,"endHours":24.515594208489443,"quality":"auspicious"},{"name":"Kāla","start":"00:31","end":"01:50","startHours":24.515594208489443,"endHours":25.83306781703952,"quality":"inauspicious"},{"name":"Śubha","start":"01:50","end":"03:09","startHours":25.83306781703952,"endHours":27.1505414255896,"quality":"auspicious"},{"name":"Roga","start":"03:09","end":"04:28","startHours":27.1505414255896,"endHours":28.468015034139682,"quality":"inauspicious"},{"name":"Udveg","start":"04:28","end":"05:47","startHours":28.468015034139682,"endHours":29.785488642689764,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:47","end":"06:47","startHours":5.785488642689762,"endHours":6.785488642689762,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:47","end":"07:47","startHours":6.785488642689762,"endHours":7.785488642689762,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:47","end":"08:47","startHours":7.785488642689762,"endHours":8.785488642689762,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:47","end":"09:47","startHours":8.785488642689762,"endHours":9.785488642689762,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:47","end":"10:47","startHours":9.785488642689762,"endHours":10.785488642689762,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:47","end":"11:47","startHours":10.785488642689762,"endHours":11.785488642689762,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:47","end":"12:47","startHours":11.785488642689762,"endHours":12.785488642689762,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:47","end":"13:47","startHours":12.785488642689762,"endHours":13.785488642689762,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:47","end":"14:47","startHours":13.785488642689762,"endHours":14.785488642689762,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:47","end":"15:47","startHours":14.785488642689762,"endHours":15.785488642689762,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:47","end":"16:47","startHours":15.785488642689762,"endHours":16.785488642689764,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:47","end":"17:47","startHours":16.785488642689764,"endHours":17.785488642689764,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:47","end":"18:47","startHours":17.785488642689764,"endHours":18.785488642689764,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:47","end":"19:47","startHours":18.785488642689764,"endHours":19.785488642689764,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:47","end":"20:47","startHours":19.785488642689764,"endHours":20.785488642689764,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:47","end":"21:47","startHours":20.785488642689764,"endHours":21.785488642689764,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:47","end":"22:47","startHours":21.785488642689764,"endHours":22.785488642689764,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:47","end":"23:47","startHours":22.785488642689764,"endHours":23.785488642689764,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:47","end":"00:47","startHours":23.785488642689764,"endHours":24.785488642689764,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:47","end":"01:47","startHours":24.785488642689764,"endHours":25.785488642689764,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:47","end":"02:47","startHours":25.785488642689764,"endHours":26.785488642689764,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:47","end":"03:47","startHours":26.785488642689764,"endHours":27.785488642689764,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:47","end":"04:47","startHours":27.785488642689764,"endHours":28.785488642689764,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:47","end":"05:47","startHours":28.785488642689764,"endHours":29.785488642689764,"planetary_lord":"Sun"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-15.43564857760877,"eotMinutes":-14.37765250936663,"ayanamsa":23.7147}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Trayodaśī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","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 February 7, 1990 CE · Perth, Australia · Vidhyamitra","description":"February 7, 1990 CE for Perth, Australia: Śukla Trayodaśī, sūryodaya 05:47, sūryāsta 19:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1990-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1990-02-07","sa":"https://sa.vidhyamitra.com/city/perth/1990-02-07","hi":"https://hi.vidhyamitra.com/city/perth/1990-02-07","x-default":"https://vidhyamitra.com/city/perth/1990-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T20:59:59.950Z","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":"2026-05-24T20:59:59.950Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T20:59:59.950Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}