{"id":"vidhyamitra:city-day:perth:1972-04-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1972-04-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1972-04-06","date_display":"April 6, 1972 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":1972,"month":4,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441413.770833,"kali_year":5073,"ahargana":1852948.2708,"sun":{"sidereal_longitude":353.0912,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":255.8763,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.7851,"elapsed_within_tithi_degrees":10.7851},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":255.8763,"elapsed_within_degrees":2.5429},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.9674},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1972,"month":4,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441413.770833,"ahargana":1852948.2708,"kali_year":5073,"ayanamsa_lahiri":23.4655,"grahas":{"sun":{"sidereal_longitude":352.871498,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":252.052498,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":-1.9715},"mars":{"sidereal_longitude":43.33749799999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":343.591398,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":254.952898,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":39.06199800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":40.123198,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":281.8836,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":101.8836,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":1972,"month":4,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441413.770833,"kali_year":5073,"ahargana":1852948.2708,"sun":{"sidereal_longitude":353.0912,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":255.8763,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.7851,"elapsed_within_tithi_degrees":10.7851},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":255.8763,"elapsed_within_degrees":2.5429},"yoga":{"number":19,"name":"Parigha","sum_longitude":248.9674},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.972,"elongation":97.215},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.972,"opposition_distance":82.785}},"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":"06:31","sunsetLocal":"18:07","solarNoonLocal":"12:19","dayLengthHours":11.595127819650111,"dayLengthDisplay":"11 Hours 35 Mins 42 Secs","nightLengthDisplay":"12 Hours 24 Mins 18 Secs","moonriseLocal":"22:31","moonsetLocal":"12:42","rahuKala":{"name":"Rāhu Kāla","start":"13:46","end":"15:13","startHours":13.77185479910698,"endHours":15.221245776563245,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:31","end":"07:58","startHours":6.524899911825662,"endHours":7.974290889281925,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:25","end":"10:52","startHours":9.423681866738189,"endHours":10.873072844194454,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:14","end":"09:37","startHours":9.230429736410688,"endHours":9.616933997065692,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:00","end":"07:19","startHours":7.008030237644416,"endHours":7.317233646168419,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:43","startHours":11.935959560995714,"endHours":12.708968082305722,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:45","startHours":4.978882869205647,"endHours":5.751891390515654,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:34","end":"06:31","startHours":5.558639260188152,"endHours":6.524899911825662,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:15","end":"15:02","startHours":14.254985124925735,"endHours":15.027993646235743,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.920027731475773,"endHours":18.320027731475772,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:36","startHours":18.120027731475773,"endHours":18.60315805729453,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.870027731475773,"endHours":19.620027731475773,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:43","startHours":23.935959560995716,"endHours":24.70896808230572,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:31","end":"07:58","startHours":6.524899911825662,"endHours":7.974290889281925,"quality":"auspicious"},{"name":"Roga","start":"07:58","end":"09:25","startHours":7.974290889281925,"endHours":9.423681866738189,"quality":"inauspicious"},{"name":"Udveg","start":"09:25","end":"10:52","startHours":9.423681866738189,"endHours":10.873072844194454,"quality":"inauspicious"},{"name":"Chala","start":"10:52","end":"12:19","startHours":10.873072844194454,"endHours":12.322463821650718,"quality":"neutral"},{"name":"Labha","start":"12:19","end":"13:46","startHours":12.322463821650718,"endHours":13.77185479910698,"quality":"auspicious"},{"name":"Amṛta","start":"13:46","end":"15:13","startHours":13.77185479910698,"endHours":15.221245776563245,"quality":"auspicious"},{"name":"Kāla","start":"15:13","end":"16:40","startHours":15.221245776563245,"endHours":16.670636754019508,"quality":"inauspicious"},{"name":"Śubha","start":"16:40","end":"18:07","startHours":16.670636754019508,"endHours":18.120027731475773,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:07","end":"19:40","startHours":18.120027731475773,"endHours":19.670636754019508,"quality":"auspicious"},{"name":"Kāla","start":"19:40","end":"21:13","startHours":19.670636754019508,"endHours":21.221245776563244,"quality":"inauspicious"},{"name":"Śubha","start":"21:13","end":"22:46","startHours":21.221245776563244,"endHours":22.771854799106983,"quality":"auspicious"},{"name":"Roga","start":"22:46","end":"00:19","startHours":22.771854799106983,"endHours":24.322463821650718,"quality":"inauspicious"},{"name":"Udveg","start":"00:19","end":"01:52","startHours":24.322463821650718,"endHours":25.873072844194454,"quality":"inauspicious"},{"name":"Chala","start":"01:52","end":"03:25","startHours":25.873072844194454,"endHours":27.42368186673819,"quality":"neutral"},{"name":"Labha","start":"03:25","end":"04:58","startHours":27.42368186673819,"endHours":28.974290889281924,"quality":"auspicious"},{"name":"Amṛta","start":"04:58","end":"06:31","startHours":28.974290889281924,"endHours":30.524899911825663,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:31","end":"07:31","startHours":6.524899911825662,"endHours":7.524899911825662,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:31","end":"08:31","startHours":7.524899911825662,"endHours":8.524899911825662,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:31","end":"09:31","startHours":8.524899911825662,"endHours":9.524899911825662,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:31","end":"10:31","startHours":9.524899911825662,"endHours":10.524899911825662,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:31","end":"11:31","startHours":10.524899911825662,"endHours":11.524899911825662,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:31","end":"12:31","startHours":11.524899911825662,"endHours":12.524899911825662,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:31","end":"13:31","startHours":12.524899911825662,"endHours":13.524899911825662,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:31","end":"14:31","startHours":13.524899911825662,"endHours":14.524899911825662,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:31","end":"15:31","startHours":14.524899911825662,"endHours":15.524899911825662,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:31","end":"16:31","startHours":15.524899911825662,"endHours":16.524899911825663,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:31","end":"17:31","startHours":16.524899911825663,"endHours":17.524899911825663,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:31","end":"18:31","startHours":17.524899911825663,"endHours":18.524899911825663,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:31","end":"19:31","startHours":18.524899911825663,"endHours":19.524899911825663,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:31","end":"20:31","startHours":19.524899911825663,"endHours":20.524899911825663,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:31","end":"21:31","startHours":20.524899911825663,"endHours":21.524899911825663,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:31","end":"22:31","startHours":21.524899911825663,"endHours":22.524899911825663,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:31","end":"23:31","startHours":22.524899911825663,"endHours":23.524899911825663,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:31","end":"00:31","startHours":23.524899911825663,"endHours":24.524899911825663,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:31","end":"01:31","startHours":24.524899911825663,"endHours":25.524899911825663,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:31","end":"02:31","startHours":25.524899911825663,"endHours":26.524899911825663,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:31","end":"03:31","startHours":26.524899911825663,"endHours":27.524899911825663,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:31","end":"04:31","startHours":27.524899911825663,"endHours":28.524899911825663,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:31","end":"05:31","startHours":28.524899911825663,"endHours":29.524899911825663,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:31","end":"06:31","startHours":29.524899911825663,"endHours":30.524899911825663,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":6.4235130208659035,"eotMinutes":-2.7898292990430456,"ayanamsa":23.4655}},"calendars":{"vikram_samvat":2029,"vikram_samvatsara":"Krodhana","saka_samvat":1894,"saka_samvatsara":"Paridhāvi","bengali_samvat":1379,"malayalam_era":1148,"nanakshahi_year":503,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","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":"Vaiśākha Kṛṣṇa Saptamī · Vikram 2029 Krodhana · Śaka 1894 Paridhāvi"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 April 6, 1972 CE · Perth, Australia · Vidhyamitra","description":"April 6, 1972 CE for Perth, Australia: Kṛṣṇa Saptamī, sūryodaya 06:31, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1972-04-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1972-04-06","sa":"https://sa.vidhyamitra.com/city/perth/1972-04-06","hi":"https://hi.vidhyamitra.com/city/perth/1972-04-06","x-default":"https://vidhyamitra.com/city/perth/1972-04-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T06:08:13.798Z","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":"2026-06-01T06:08:13.798Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T06:08:13.798Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}