{"id":"vidhyamitra:city-day:perth:1973-03-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1973-03-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-03-12","date_display":"March 12, 1973 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":1973,"month":3,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441753.770833,"kali_year":5074,"ahargana":1853288.2708,"sun":{"sidereal_longitude":328.0814,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":59.4578,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.3764,"elapsed_within_tithi_degrees":7.3764},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":59.4578,"elapsed_within_degrees":6.1245},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.5392},"karana":{"half_tithi_index":15,"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":1973,"month":3,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441753.770833,"ahargana":1853288.2708,"kali_year":5074,"ayanamsa_lahiri":23.4785,"grahas":{"sun":{"sidereal_longitude":327.844507,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":59.75970699999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false,"latitude":1.8582},"mars":{"sidereal_longitude":266.387207,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":331.816607,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":280.396707,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"venus":{"sidereal_longitude":320.96630700000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":51.065607,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":263.8688,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":83.8688,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1973,"month":3,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441753.770833,"kali_year":5074,"ahargana":1853288.2708,"sun":{"sidereal_longitude":328.0814,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":59.4578,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.3764,"elapsed_within_tithi_degrees":7.3764},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":59.4578,"elapsed_within_degrees":6.1245},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.5392},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.858,"elongation":91.376},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.858,"opposition_distance":88.624}},"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":"06:15","sunsetLocal":"18:40","solarNoonLocal":"12:27","dayLengthHours":12.41773783778077,"dayLengthDisplay":"12 Hours 25 Mins 04 Secs","nightLengthDisplay":"11 Hours 34 Mins 56 Secs","moonriseLocal":"13:34","moonsetLocal":"23:36","rahuKala":{"name":"Rāhu Kāla","start":"07:48","end":"09:21","startHours":7.794200289275459,"endHours":9.346417518998056,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:54","end":"12:27","startHours":10.898634748720651,"endHours":12.450851978443247,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:00","end":"15:33","startHours":14.003069208165844,"endHours":15.55528643788844,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:08","end":"09:33","startHours":9.13945522170171,"endHours":9.5533798162944,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:46","end":"07:05","startHours":6.759388802793728,"endHours":7.090528478467882,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:52","startHours":12.036927383850553,"endHours":12.86477657303594,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:35","end":"05:25","startHours":4.586284681182093,"endHours":5.414133870367478,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:12","end":"06:15","startHours":5.207171573071132,"endHours":6.2419830595528625,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:21","startHours":14.520474951406708,"endHours":15.348324140592092,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:28","end":"18:52","startHours":18.459720897333632,"endHours":18.85972089733363,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:40","end":"19:11","startHours":18.65972089733363,"endHours":19.177126640574496,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:25","end":"20:10","startHours":18.40972089733363,"endHours":20.15972089733363,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:52","startHours":24.036927383850553,"endHours":24.86477657303594,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:15","end":"07:48","startHours":6.2419830595528625,"endHours":7.794200289275459,"quality":"auspicious"},{"name":"Kāla","start":"07:48","end":"09:21","startHours":7.794200289275459,"endHours":9.346417518998056,"quality":"inauspicious"},{"name":"Śubha","start":"09:21","end":"10:54","startHours":9.346417518998056,"endHours":10.898634748720651,"quality":"auspicious"},{"name":"Roga","start":"10:54","end":"12:27","startHours":10.898634748720651,"endHours":12.450851978443247,"quality":"inauspicious"},{"name":"Udveg","start":"12:27","end":"14:00","startHours":12.450851978443247,"endHours":14.003069208165844,"quality":"inauspicious"},{"name":"Chala","start":"14:00","end":"15:33","startHours":14.003069208165844,"endHours":15.55528643788844,"quality":"neutral"},{"name":"Labha","start":"15:33","end":"17:06","startHours":15.55528643788844,"endHours":17.107503667611034,"quality":"auspicious"},{"name":"Amṛta","start":"17:06","end":"18:40","startHours":17.107503667611034,"endHours":18.65972089733363,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:40","end":"20:06","startHours":18.65972089733363,"endHours":20.107503667611034,"quality":"neutral"},{"name":"Labha","start":"20:06","end":"21:33","startHours":20.107503667611034,"endHours":21.55528643788844,"quality":"auspicious"},{"name":"Amṛta","start":"21:33","end":"23:00","startHours":21.55528643788844,"endHours":23.003069208165844,"quality":"auspicious"},{"name":"Kāla","start":"23:00","end":"00:27","startHours":23.003069208165844,"endHours":24.450851978443247,"quality":"inauspicious"},{"name":"Śubha","start":"00:27","end":"01:54","startHours":24.450851978443247,"endHours":25.89863474872065,"quality":"auspicious"},{"name":"Roga","start":"01:54","end":"03:21","startHours":25.89863474872065,"endHours":27.346417518998052,"quality":"inauspicious"},{"name":"Udveg","start":"03:21","end":"04:48","startHours":27.346417518998052,"endHours":28.79420028927546,"quality":"inauspicious"},{"name":"Chala","start":"04:48","end":"06:15","startHours":28.79420028927546,"endHours":30.24198305955286,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:15","end":"07:15","startHours":6.2419830595528625,"endHours":7.2419830595528625,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:15","end":"08:15","startHours":7.2419830595528625,"endHours":8.241983059552862,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:15","end":"09:15","startHours":8.241983059552862,"endHours":9.241983059552862,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:15","end":"10:15","startHours":9.241983059552862,"endHours":10.241983059552862,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:15","end":"11:15","startHours":10.241983059552862,"endHours":11.241983059552862,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:15","end":"12:15","startHours":11.241983059552862,"endHours":12.241983059552862,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:15","end":"13:15","startHours":12.241983059552862,"endHours":13.241983059552862,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:15","end":"14:15","startHours":13.241983059552862,"endHours":14.241983059552862,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:15","end":"15:15","startHours":14.241983059552862,"endHours":15.241983059552862,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:15","end":"16:15","startHours":15.241983059552862,"endHours":16.24198305955286,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:15","end":"17:15","startHours":16.24198305955286,"endHours":17.24198305955286,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:15","end":"18:15","startHours":17.24198305955286,"endHours":18.24198305955286,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:15","end":"19:15","startHours":18.24198305955286,"endHours":19.24198305955286,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:15","end":"20:15","startHours":19.24198305955286,"endHours":20.24198305955286,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:15","end":"21:15","startHours":20.24198305955286,"endHours":21.24198305955286,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:15","end":"22:15","startHours":21.24198305955286,"endHours":22.24198305955286,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:15","end":"23:15","startHours":22.24198305955286,"endHours":23.24198305955286,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:15","end":"00:15","startHours":23.24198305955286,"endHours":24.24198305955286,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:15","end":"01:15","startHours":24.24198305955286,"endHours":25.24198305955286,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:15","end":"02:15","startHours":25.24198305955286,"endHours":26.24198305955286,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:15","end":"03:15","startHours":26.24198305955286,"endHours":27.24198305955286,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:15","end":"04:15","startHours":27.24198305955286,"endHours":28.24198305955286,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:15","end":"05:15","startHours":28.24198305955286,"endHours":29.24198305955286,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:15","end":"06:15","startHours":29.24198305955286,"endHours":30.24198305955286,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-3.440011509922678,"eotMinutes":-10.493118706594819,"ayanamsa":23.4785}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Aṣṭamī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"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":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 March 12, 1973 CE · Perth, Australia · Vidhyamitra","description":"March 12, 1973 CE for Perth, Australia: Śukla Aṣṭamī, sūryodaya 06:15, sūryāsta 18:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1973-03-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1973-03-12","sa":"https://sa.vidhyamitra.com/city/perth/1973-03-12","hi":"https://hi.vidhyamitra.com/city/perth/1973-03-12","x-default":"https://vidhyamitra.com/city/perth/1973-03-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:31:25.353Z","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":"2026-06-02T20:31:25.353Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:31:25.353Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}