{"id":"vidhyamitra:city-day:perth:1980-03-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1980-03-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-03-28","date_display":"March 28, 1980 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":1980,"month":3,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444326.770833,"kali_year":5081,"ahargana":1855861.2708,"sun":{"sidereal_longitude":344.1622,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":123.4657,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.3035,"elapsed_within_tithi_degrees":7.3035},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":123.4657,"elapsed_within_degrees":3.4657},"yoga":{"number":9,"name":"Śūla","sum_longitude":107.6278},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1980,"month":3,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444326.770833,"ahargana":1855861.2708,"kali_year":5081,"ayanamsa_lahiri":23.5769,"grahas":{"sun":{"sidereal_longitude":343.9443,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":124.99000000000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false,"latitude":-0.3193},"mars":{"sidereal_longitude":123.12169999999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":317.2819999999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":127.78699999999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":29.873400000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":148.8175,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":127.5388,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":307.5388,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1980,"month":3,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444326.770833,"kali_year":5081,"ahargana":1855861.2708,"sun":{"sidereal_longitude":344.1622,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":123.4657,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.3035,"elapsed_within_tithi_degrees":7.3035},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":123.4657,"elapsed_within_degrees":3.4657},"yoga":{"number":9,"name":"Śūla","sum_longitude":107.6278},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.319,"elongation":139.303},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.319,"opposition_distance":40.697}},"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":"06:26","sunsetLocal":"18:19","solarNoonLocal":"12:22","dayLengthHours":11.882687835768511,"dayLengthDisplay":"11 Hours 52 Mins 58 Secs","nightLengthDisplay":"12 Hours 07 Mins 02 Secs","moonriseLocal":"16:14","moonsetLocal":"03:19","rahuKala":{"name":"Rāhu Kāla","start":"10:53","end":"12:22","startHours":10.884299727302299,"endHours":12.369635706773362,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:20","end":"16:50","startHours":15.340307665715489,"endHours":16.825643645186553,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:55","end":"09:24","startHours":7.91362776836017,"endHours":9.398963747831234,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:36","startHours":9.200918950568425,"endHours":9.597008545094042,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:55","end":"07:14","startHours":6.923403782046127,"endHours":7.240275457666621,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:58","end":"12:46","startHours":11.973546112247744,"endHours":12.765725301298977,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:51","end":"05:38","startHours":4.843933410786637,"endHours":5.636112599837872,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:26","end":"06:26","startHours":5.4380678025750635,"endHours":6.428291788889106,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:09","startHours":14.350083679401447,"endHours":15.142262868452681,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:07","end":"18:31","startHours":18.110979624657617,"endHours":18.510979624657615,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:19","end":"18:48","startHours":18.310979624657616,"endHours":18.806091617814637,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:04","end":"19:49","startHours":18.060979624657616,"endHours":19.810979624657616,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:58","end":"00:46","startHours":23.973546112247742,"endHours":24.765725301298975,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:26","end":"07:55","startHours":6.428291788889106,"endHours":7.91362776836017,"quality":"neutral"},{"name":"Labha","start":"07:55","end":"09:24","startHours":7.91362776836017,"endHours":9.398963747831234,"quality":"auspicious"},{"name":"Amṛta","start":"09:24","end":"10:53","startHours":9.398963747831234,"endHours":10.884299727302299,"quality":"auspicious"},{"name":"Kāla","start":"10:53","end":"12:22","startHours":10.884299727302299,"endHours":12.369635706773362,"quality":"inauspicious"},{"name":"Śubha","start":"12:22","end":"13:51","startHours":12.369635706773362,"endHours":13.854971686244426,"quality":"auspicious"},{"name":"Roga","start":"13:51","end":"15:20","startHours":13.854971686244426,"endHours":15.340307665715489,"quality":"inauspicious"},{"name":"Udveg","start":"15:20","end":"16:50","startHours":15.340307665715489,"endHours":16.825643645186553,"quality":"inauspicious"},{"name":"Chala","start":"16:50","end":"18:19","startHours":16.825643645186553,"endHours":18.310979624657616,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:19","end":"19:50","startHours":18.310979624657616,"endHours":19.825643645186553,"quality":"inauspicious"},{"name":"Udveg","start":"19:50","end":"21:20","startHours":19.825643645186553,"endHours":21.34030766571549,"quality":"inauspicious"},{"name":"Chala","start":"21:20","end":"22:51","startHours":21.34030766571549,"endHours":22.854971686244426,"quality":"neutral"},{"name":"Labha","start":"22:51","end":"00:22","startHours":22.854971686244426,"endHours":24.36963570677336,"quality":"auspicious"},{"name":"Amṛta","start":"00:22","end":"01:53","startHours":24.36963570677336,"endHours":25.8842997273023,"quality":"auspicious"},{"name":"Kāla","start":"01:53","end":"03:24","startHours":25.8842997273023,"endHours":27.398963747831232,"quality":"inauspicious"},{"name":"Śubha","start":"03:24","end":"04:55","startHours":27.398963747831232,"endHours":28.91362776836017,"quality":"auspicious"},{"name":"Roga","start":"04:55","end":"06:26","startHours":28.91362776836017,"endHours":30.428291788889105,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:26","end":"07:26","startHours":6.428291788889106,"endHours":7.428291788889106,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:26","end":"08:26","startHours":7.428291788889106,"endHours":8.428291788889105,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:26","end":"09:26","startHours":8.428291788889105,"endHours":9.428291788889105,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:26","end":"10:26","startHours":9.428291788889105,"endHours":10.428291788889105,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:26","end":"11:26","startHours":10.428291788889105,"endHours":11.428291788889105,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:26","end":"12:26","startHours":11.428291788889105,"endHours":12.428291788889105,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:26","end":"13:26","startHours":12.428291788889105,"endHours":13.428291788889105,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:26","end":"14:26","startHours":13.428291788889105,"endHours":14.428291788889105,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:26","end":"15:26","startHours":14.428291788889105,"endHours":15.428291788889105,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:26","end":"16:26","startHours":15.428291788889105,"endHours":16.428291788889105,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:26","end":"17:26","startHours":16.428291788889105,"endHours":17.428291788889105,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:26","end":"18:26","startHours":17.428291788889105,"endHours":18.428291788889105,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:26","end":"19:26","startHours":18.428291788889105,"endHours":19.428291788889105,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:26","end":"20:26","startHours":19.428291788889105,"endHours":20.428291788889105,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:26","end":"21:26","startHours":20.428291788889105,"endHours":21.428291788889105,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:26","end":"22:26","startHours":21.428291788889105,"endHours":22.428291788889105,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:26","end":"23:26","startHours":22.428291788889105,"endHours":23.428291788889105,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:26","end":"00:26","startHours":23.428291788889105,"endHours":24.428291788889105,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:26","end":"01:26","startHours":24.428291788889105,"endHours":25.428291788889105,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:26","end":"02:26","startHours":25.428291788889105,"endHours":26.428291788889105,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:26","end":"03:26","startHours":26.428291788889105,"endHours":27.428291788889105,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:26","end":"04:26","startHours":27.428291788889105,"endHours":28.428291788889105,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:26","end":"05:26","startHours":28.428291788889105,"endHours":29.428291788889105,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:26","end":"06:26","startHours":29.428291788889105,"endHours":30.428291788889105,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"South-East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":2.9841905825366943,"eotMinutes":-5.6201424064016345,"ayanamsa":23.5769}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Dvādaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 March 28, 1980 CE · Perth, Australia · Vidhyamitra","description":"March 28, 1980 CE for Perth, Australia: Śukla Dvādaśī, sūryodaya 06:26, sūryāsta 18:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1980-03-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1980-03-28","sa":"https://sa.vidhyamitra.com/city/perth/1980-03-28","hi":"https://hi.vidhyamitra.com/city/perth/1980-03-28","x-default":"https://vidhyamitra.com/city/perth/1980-03-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T07:28:28.937Z","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":"2026-06-03T07:28:28.937Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T07:28:28.937Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}