{"id":"vidhyamitra:city-day:perth:1979-07-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1979-07-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-07-16","date_display":"July 16, 1979 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":1979,"month":7,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444070.770833,"kali_year":5081,"ahargana":1855605.2708,"sun":{"sidereal_longitude":88.9885,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":350.9322,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.9437,"elapsed_within_tithi_degrees":9.9437},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":350.9322,"elapsed_within_degrees":4.2655},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.9207},"karana":{"half_tithi_index":43,"name":"Bava"},"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":1979,"month":7,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444070.770833,"ahargana":1855605.2708,"kali_year":5081,"ayanamsa_lahiri":23.5671,"grahas":{"sun":{"sidereal_longitude":89.37308100000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":353.946081,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false,"latitude":-2.2366},"mars":{"sidereal_longitude":50.721181,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":111.11758099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":110.06758100000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":78.57618100000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":136.91648099999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":141.103,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":321.103,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1979,"month":7,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444070.770833,"kali_year":5081,"ahargana":1855605.2708,"sun":{"sidereal_longitude":88.9885,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":350.9322,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.9437,"elapsed_within_tithi_degrees":9.9437},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":350.9322,"elapsed_within_degrees":4.2655},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.9207},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.237,"elongation":98.056},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.237,"opposition_distance":81.944}},"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":"07:15","sunsetLocal":"17:30","solarNoonLocal":"12:22","dayLengthHours":10.249951412256884,"dayLengthDisplay":"10 Hours 15 Mins 00 Secs","nightLengthDisplay":"13 Hours 45 Mins 00 Secs","moonriseLocal":"00:15","moonsetLocal":"11:46","rahuKala":{"name":"Rāhu Kāla","start":"08:32","end":"09:48","startHours":8.52694723067495,"endHours":9.80819115720706,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:05","end":"12:22","startHours":11.089435083739172,"endHours":12.370679010271282,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:39","end":"14:56","startHours":13.651922936803391,"endHours":14.933166863335503,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:59","startHours":9.637358633669447,"endHours":9.979023680744675,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:57","startHours":7.672784612986876,"endHours":7.94611665064706,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:43","startHours":12.029013963196052,"endHours":12.712344057346511,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:53","end":"06:34","startHours":5.879043115841922,"endHours":6.562373209992381,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:23","end":"07:15","startHours":6.391540686454766,"endHours":7.24570330414284,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:05","end":"14:46","startHours":14.079004245647429,"endHours":14.762334339797889,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:18","end":"17:42","startHours":17.295654716399724,"endHours":17.695654716399723,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:30","end":"17:55","startHours":17.495654716399724,"endHours":17.92273602524376,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:15","end":"19:00","startHours":17.245654716399724,"endHours":18.995654716399724,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:43","startHours":24.029013963196054,"endHours":24.71234405734651,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:15","end":"08:32","startHours":7.24570330414284,"endHours":8.52694723067495,"quality":"auspicious"},{"name":"Kāla","start":"08:32","end":"09:48","startHours":8.52694723067495,"endHours":9.80819115720706,"quality":"inauspicious"},{"name":"Śubha","start":"09:48","end":"11:05","startHours":9.80819115720706,"endHours":11.089435083739172,"quality":"auspicious"},{"name":"Roga","start":"11:05","end":"12:22","startHours":11.089435083739172,"endHours":12.370679010271282,"quality":"inauspicious"},{"name":"Udveg","start":"12:22","end":"13:39","startHours":12.370679010271282,"endHours":13.651922936803391,"quality":"inauspicious"},{"name":"Chala","start":"13:39","end":"14:56","startHours":13.651922936803391,"endHours":14.933166863335503,"quality":"neutral"},{"name":"Labha","start":"14:56","end":"16:13","startHours":14.933166863335503,"endHours":16.214410789867614,"quality":"auspicious"},{"name":"Amṛta","start":"16:13","end":"17:30","startHours":16.214410789867614,"endHours":17.495654716399724,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:30","end":"19:13","startHours":17.495654716399724,"endHours":19.214410789867614,"quality":"neutral"},{"name":"Labha","start":"19:13","end":"20:56","startHours":19.214410789867614,"endHours":20.9331668633355,"quality":"auspicious"},{"name":"Amṛta","start":"20:56","end":"22:39","startHours":20.9331668633355,"endHours":22.65192293680339,"quality":"auspicious"},{"name":"Kāla","start":"22:39","end":"00:22","startHours":22.65192293680339,"endHours":24.37067901027128,"quality":"inauspicious"},{"name":"Śubha","start":"00:22","end":"02:05","startHours":24.37067901027128,"endHours":26.089435083739172,"quality":"auspicious"},{"name":"Roga","start":"02:05","end":"03:48","startHours":26.089435083739172,"endHours":27.808191157207062,"quality":"inauspicious"},{"name":"Udveg","start":"03:48","end":"05:32","startHours":27.808191157207062,"endHours":29.52694723067495,"quality":"inauspicious"},{"name":"Chala","start":"05:32","end":"07:15","startHours":29.52694723067495,"endHours":31.24570330414284,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.24570330414284,"endHours":8.24570330414284,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.24570330414284,"endHours":9.24570330414284,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.24570330414284,"endHours":10.24570330414284,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.24570330414284,"endHours":11.24570330414284,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.24570330414284,"endHours":12.24570330414284,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.24570330414284,"endHours":13.24570330414284,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.24570330414284,"endHours":14.24570330414284,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.24570330414284,"endHours":15.24570330414284,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.24570330414284,"endHours":16.24570330414284,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.24570330414284,"endHours":17.24570330414284,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.24570330414284,"endHours":18.24570330414284,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.24570330414284,"endHours":19.24570330414284,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.24570330414284,"endHours":20.24570330414284,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.24570330414284,"endHours":21.24570330414284,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.24570330414284,"endHours":22.24570330414284,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.24570330414284,"endHours":23.24570330414284,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.24570330414284,"endHours":24.24570330414284,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.24570330414284,"endHours":25.24570330414284,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.24570330414284,"endHours":26.24570330414284,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.24570330414284,"endHours":27.24570330414284,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.24570330414284,"endHours":28.24570330414284,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.24570330414284,"endHours":29.24570330414284,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.24570330414284,"endHours":30.24570330414284,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.24570330414284,"endHours":31.24570330414284,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.486174857112417,"eotMinutes":-5.682740616276977,"ayanamsa":23.5671}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Saptamī · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"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":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 July 16, 1979 CE · Perth, Australia · Vidhyamitra","description":"July 16, 1979 CE for Perth, Australia: Kṛṣṇa Saptamī, sūryodaya 07:15, sūryāsta 17:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1979-07-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1979-07-16","sa":"https://sa.vidhyamitra.com/city/perth/1979-07-16","hi":"https://hi.vidhyamitra.com/city/perth/1979-07-16","x-default":"https://vidhyamitra.com/city/perth/1979-07-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:53:44.803Z","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":"2026-05-31T09:53:44.803Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:53:44.803Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}