{"id":"vidhyamitra:city-day:melbourne:1981-04-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/melbourne/1981-04-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-11","date_display":"April 11, 1981 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":1981,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444705.770833,"kali_year":5082,"ahargana":1856240.2708,"sun":{"sidereal_longitude":357.6675,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":79.0463,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":81.3788,"elapsed_within_tithi_degrees":9.3788},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.0463,"elapsed_within_degrees":12.3797},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":76.7139},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1981,"month":4,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444705.770833,"ahargana":1856240.2708,"kali_year":5082,"ayanamsa_lahiri":23.5914,"grahas":{"sun":{"sidereal_longitude":357.482319,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":82.14351899999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":-2.1394},"mars":{"sidereal_longitude":355.875119,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":341.165819,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":160.02391899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":358.703619,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":161.49001899999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.4576,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.4576,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444705.770833,"kali_year":5082,"ahargana":1856240.2708,"sun":{"sidereal_longitude":357.6675,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":79.0463,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":81.3788,"elapsed_within_tithi_degrees":9.3788},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.0463,"elapsed_within_degrees":12.3797},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":76.7139},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.139,"elongation":81.379},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.139,"opposition_distance":98.621}},"eclipse_window_40days":[]},"city":{"slug":"melbourne","name":"Melbourne, Australia","lat":-37.8136,"lon":144.9631,"tz_offset_hours":10,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"melbourne","name":"Melbourne, Australia","lat":-37.8136,"lon":144.9631,"tz_offset_hours":10,"country":"AU","tier":"diaspora"},"sunriseLocal":"06:43","sunsetLocal":"18:00","solarNoonLocal":"12:21","dayLengthHours":11.284321257155966,"dayLengthDisplay":"11 Hours 17 Mins 04 Secs","nightLengthDisplay":"12 Hours 42 Mins 56 Secs","moonriseLocal":"13:12","moonsetLocal":"22:48","rahuKala":{"name":"Rāhu Kāla","start":"09:32","end":"10:57","startHours":9.536757801385622,"endHours":10.947297958530118,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:46","end":"15:11","startHours":13.76837827281911,"endHours":15.178918429963606,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:43","end":"08:08","startHours":6.71567748709663,"endHours":8.126217644241127,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:21","end":"09:43","startHours":9.348685780433023,"endHours":9.72482982233822,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:29","startHours":7.185857539478128,"endHours":7.486772773002287,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:44","startHours":11.981694073769415,"endHours":12.733982157579813,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:13","end":"05:58","startHours":5.211101319475834,"endHours":5.963389403286232,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:47","end":"06:43","startHours":5.775317382333633,"endHours":6.71567748709663,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"14:59","startHours":14.238558325200607,"endHours":14.990846409011004,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.799998744252598,"endHours":18.199998744252596,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:28","startHours":17.999998744252597,"endHours":18.470178796634094,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.749998744252597,"endHours":19.499998744252597,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:44","startHours":23.981694073769415,"endHours":24.733982157579813,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:43","end":"08:08","startHours":6.71567748709663,"endHours":8.126217644241127,"quality":"inauspicious"},{"name":"Śubha","start":"08:08","end":"09:32","startHours":8.126217644241127,"endHours":9.536757801385622,"quality":"auspicious"},{"name":"Roga","start":"09:32","end":"10:57","startHours":9.536757801385622,"endHours":10.947297958530118,"quality":"inauspicious"},{"name":"Udveg","start":"10:57","end":"12:21","startHours":10.947297958530118,"endHours":12.357838115674614,"quality":"inauspicious"},{"name":"Chala","start":"12:21","end":"13:46","startHours":12.357838115674614,"endHours":13.76837827281911,"quality":"neutral"},{"name":"Labha","start":"13:46","end":"15:11","startHours":13.76837827281911,"endHours":15.178918429963606,"quality":"auspicious"},{"name":"Amṛta","start":"15:11","end":"16:35","startHours":15.178918429963606,"endHours":16.5894585871081,"quality":"auspicious"},{"name":"Kāla","start":"16:35","end":"18:00","startHours":16.5894585871081,"endHours":17.999998744252597,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:00","end":"19:35","startHours":17.999998744252597,"endHours":19.5894585871081,"quality":"auspicious"},{"name":"Amṛta","start":"19:35","end":"21:11","startHours":19.5894585871081,"endHours":21.178918429963606,"quality":"auspicious"},{"name":"Kāla","start":"21:11","end":"22:46","startHours":21.178918429963606,"endHours":22.76837827281911,"quality":"inauspicious"},{"name":"Śubha","start":"22:46","end":"00:21","startHours":22.76837827281911,"endHours":24.357838115674614,"quality":"auspicious"},{"name":"Roga","start":"00:21","end":"01:57","startHours":24.357838115674614,"endHours":25.947297958530118,"quality":"inauspicious"},{"name":"Udveg","start":"01:57","end":"03:32","startHours":25.947297958530118,"endHours":27.536757801385622,"quality":"inauspicious"},{"name":"Chala","start":"03:32","end":"05:08","startHours":27.536757801385622,"endHours":29.126217644241127,"quality":"neutral"},{"name":"Labha","start":"05:08","end":"06:43","startHours":29.126217644241127,"endHours":30.71567748709663,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:43","end":"07:43","startHours":6.71567748709663,"endHours":7.71567748709663,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:43","end":"08:43","startHours":7.71567748709663,"endHours":8.715677487096631,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:43","end":"09:43","startHours":8.715677487096631,"endHours":9.715677487096631,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:43","end":"10:43","startHours":9.715677487096631,"endHours":10.715677487096631,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:43","end":"11:43","startHours":10.715677487096631,"endHours":11.715677487096631,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:43","end":"12:43","startHours":11.715677487096631,"endHours":12.715677487096631,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:43","end":"13:43","startHours":12.715677487096631,"endHours":13.715677487096631,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:43","end":"14:43","startHours":13.715677487096631,"endHours":14.715677487096631,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:43","end":"15:43","startHours":14.715677487096631,"endHours":15.715677487096631,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:43","end":"16:43","startHours":15.715677487096631,"endHours":16.71567748709663,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:43","end":"17:43","startHours":16.71567748709663,"endHours":17.71567748709663,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:43","end":"18:43","startHours":17.71567748709663,"endHours":18.71567748709663,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:43","end":"19:43","startHours":18.71567748709663,"endHours":19.71567748709663,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:43","end":"20:43","startHours":19.71567748709663,"endHours":20.71567748709663,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:43","end":"21:43","startHours":20.71567748709663,"endHours":21.71567748709663,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:43","end":"22:43","startHours":21.71567748709663,"endHours":22.71567748709663,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:43","end":"23:43","startHours":22.71567748709663,"endHours":23.71567748709663,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:43","end":"00:43","startHours":23.71567748709663,"endHours":24.71567748709663,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:43","end":"01:43","startHours":24.71567748709663,"endHours":25.71567748709663,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:43","end":"02:43","startHours":25.71567748709663,"endHours":26.71567748709663,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:43","end":"03:43","startHours":26.71567748709663,"endHours":27.71567748709663,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:43","end":"04:43","startHours":27.71567748709663,"endHours":28.71567748709663,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:43","end":"05:43","startHours":28.71567748709663,"endHours":29.71567748709663,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:43","end":"06:43","startHours":29.71567748709663,"endHours":30.71567748709663,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"East (Pūrva)","chandraVasa":"South","rahuVasa":"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":8.222186829004404,"eotMinutes":-1.322686940476858,"ayanamsa":23.5914}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"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 Saptamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"melbourne"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 11, 1981 CE · Melbourne, Australia · Vidhyamitra","description":"April 11, 1981 CE for Melbourne, Australia: Śukla Saptamī, sūryodaya 06:43, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/melbourne/1981-04-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/melbourne/1981-04-11","sa":"https://sa.vidhyamitra.com/city/melbourne/1981-04-11","hi":"https://hi.vidhyamitra.com/city/melbourne/1981-04-11","x-default":"https://vidhyamitra.com/city/melbourne/1981-04-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T11:57:02.618Z","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":"2026-06-02T11:57:02.618Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T11:57:02.618Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}