{"id":"vidhyamitra:city-day:melbourne:1981-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/melbourne/1981-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-17","date_display":"December 17, 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":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444955.770833,"kali_year":5083,"ahargana":1856490.2708,"sun":{"sidereal_longitude":241.0895,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":134.1193,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":253.0298,"elapsed_within_tithi_degrees":1.0298},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":134.1193,"elapsed_within_degrees":0.7859},"yoga":{"number":2,"name":"Prīti","sum_longitude":15.2087},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"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":1981,"month":12,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444955.770833,"ahargana":1856490.2708,"kali_year":5083,"ayanamsa_lahiri":23.601,"grahas":{"sun":{"sidereal_longitude":241.412867,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":137.21096699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false,"latitude":2.8852},"mars":{"sidereal_longitude":157.100867,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":245.26536699999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":190.50356699999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":281.56666700000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":176.60236699999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":94.2114,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":274.2114,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444955.770833,"kali_year":5083,"ahargana":1856490.2708,"sun":{"sidereal_longitude":241.0895,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":134.1193,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":253.0298,"elapsed_within_tithi_degrees":1.0298},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":134.1193,"elapsed_within_degrees":0.7859},"yoga":{"number":2,"name":"Prīti","sum_longitude":15.2087},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.885,"elongation":106.97},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.885,"opposition_distance":73.03}},"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":"04:54","sunsetLocal":"19:40","solarNoonLocal":"12:17","dayLengthHours":14.772053405973308,"dayLengthDisplay":"14 Hours 46 Mins 19 Secs","nightLengthDisplay":"9 Hours 13 Mins 41 Secs","moonriseLocal":"23:41","moonsetLocal":"11:00","rahuKala":{"name":"Rāhu Kāla","start":"14:08","end":"15:58","startHours":14.128077194461522,"endHours":15.974583870208185,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"04:54","end":"06:45","startHours":4.895543815728205,"endHours":6.742050491474869,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:35","end":"10:26","startHours":8.588557167221532,"endHours":10.435063842968194,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:21","end":"08:50","startHours":8.342356277121976,"endHours":8.834758057321087,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:31","end":"05:54","startHours":5.511046040977092,"endHours":5.90496746513638,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:46","startHours":11.78916873851575,"endHours":12.77397229891397,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"02:56","end":"03:55","startHours":2.925936694931764,"endHours":3.9107402553299844,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:40","end":"04:54","startHours":3.6645393652304294,"endHours":4.895543815728205,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:45","end":"15:44","startHours":14.743579419710409,"endHours":15.728382980108629,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:28","end":"19:52","startHours":19.467597221701514,"endHours":19.867597221701512,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:40","end":"20:17","startHours":19.667597221701513,"endHours":20.283099446950402,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:25","end":"21:10","startHours":19.417597221701513,"endHours":21.167597221701513,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:46","startHours":23.789168738515748,"endHours":24.773972298913968,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"04:54","end":"06:45","startHours":4.895543815728205,"endHours":6.742050491474869,"quality":"auspicious"},{"name":"Roga","start":"06:45","end":"08:35","startHours":6.742050491474869,"endHours":8.588557167221532,"quality":"inauspicious"},{"name":"Udveg","start":"08:35","end":"10:26","startHours":8.588557167221532,"endHours":10.435063842968194,"quality":"inauspicious"},{"name":"Chala","start":"10:26","end":"12:17","startHours":10.435063842968194,"endHours":12.281570518714858,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"14:08","startHours":12.281570518714858,"endHours":14.128077194461522,"quality":"auspicious"},{"name":"Amṛta","start":"14:08","end":"15:58","startHours":14.128077194461522,"endHours":15.974583870208185,"quality":"auspicious"},{"name":"Kāla","start":"15:58","end":"17:49","startHours":15.974583870208185,"endHours":17.82109054595485,"quality":"inauspicious"},{"name":"Śubha","start":"17:49","end":"19:40","startHours":17.82109054595485,"endHours":19.667597221701513,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:40","end":"20:49","startHours":19.667597221701513,"endHours":20.82109054595485,"quality":"auspicious"},{"name":"Kāla","start":"20:49","end":"21:58","startHours":20.82109054595485,"endHours":21.974583870208185,"quality":"inauspicious"},{"name":"Śubha","start":"21:58","end":"23:08","startHours":21.974583870208185,"endHours":23.12807719446152,"quality":"auspicious"},{"name":"Roga","start":"23:08","end":"00:17","startHours":23.12807719446152,"endHours":24.281570518714858,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"01:26","startHours":24.281570518714858,"endHours":25.435063842968194,"quality":"inauspicious"},{"name":"Chala","start":"01:26","end":"02:35","startHours":25.435063842968194,"endHours":26.58855716722153,"quality":"neutral"},{"name":"Labha","start":"02:35","end":"03:45","startHours":26.58855716722153,"endHours":27.74205049147487,"quality":"auspicious"},{"name":"Amṛta","start":"03:45","end":"04:54","startHours":27.74205049147487,"endHours":28.895543815728203,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"04:54","end":"05:54","startHours":4.895543815728205,"endHours":5.895543815728205,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"05:54","end":"06:54","startHours":5.895543815728205,"endHours":6.895543815728205,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"06:54","end":"07:54","startHours":6.895543815728205,"endHours":7.895543815728205,"planetary_lord":"Moon"},{"name":"Hora 4","start":"07:54","end":"08:54","startHours":7.895543815728205,"endHours":8.895543815728205,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"08:54","end":"09:54","startHours":8.895543815728205,"endHours":9.895543815728205,"planetary_lord":"Venus"},{"name":"Hora 6","start":"09:54","end":"10:54","startHours":9.895543815728205,"endHours":10.895543815728205,"planetary_lord":"Sun"},{"name":"Hora 7","start":"10:54","end":"11:54","startHours":10.895543815728205,"endHours":11.895543815728205,"planetary_lord":"Mars"},{"name":"Hora 8","start":"11:54","end":"12:54","startHours":11.895543815728205,"endHours":12.895543815728205,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"12:54","end":"13:54","startHours":12.895543815728205,"endHours":13.895543815728205,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"13:54","end":"14:54","startHours":13.895543815728205,"endHours":14.895543815728205,"planetary_lord":"Moon"},{"name":"Hora 11","start":"14:54","end":"15:54","startHours":14.895543815728205,"endHours":15.895543815728205,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"15:54","end":"16:54","startHours":15.895543815728205,"endHours":16.895543815728203,"planetary_lord":"Venus"},{"name":"Hora 13","start":"16:54","end":"17:54","startHours":16.895543815728203,"endHours":17.895543815728203,"planetary_lord":"Sun"},{"name":"Hora 14","start":"17:54","end":"18:54","startHours":17.895543815728203,"endHours":18.895543815728203,"planetary_lord":"Mars"},{"name":"Hora 15","start":"18:54","end":"19:54","startHours":18.895543815728203,"endHours":19.895543815728203,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"19:54","end":"20:54","startHours":19.895543815728203,"endHours":20.895543815728203,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"20:54","end":"21:54","startHours":20.895543815728203,"endHours":21.895543815728203,"planetary_lord":"Moon"},{"name":"Hora 18","start":"21:54","end":"22:54","startHours":21.895543815728203,"endHours":22.895543815728203,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"22:54","end":"23:54","startHours":22.895543815728203,"endHours":23.895543815728203,"planetary_lord":"Venus"},{"name":"Hora 20","start":"23:54","end":"00:54","startHours":23.895543815728203,"endHours":24.895543815728203,"planetary_lord":"Sun"},{"name":"Hora 21","start":"00:54","end":"01:54","startHours":24.895543815728203,"endHours":25.895543815728203,"planetary_lord":"Mars"},{"name":"Hora 22","start":"01:54","end":"02:54","startHours":25.895543815728203,"endHours":26.895543815728203,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"02:54","end":"03:54","startHours":26.895543815728203,"endHours":27.895543815728203,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"03:54","end":"04:54","startHours":27.895543815728203,"endHours":28.895543815728203,"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","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.342542570154922,"eotMinutes":3.253368877108411,"ayanamsa":23.601}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Saptamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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":"melbourne"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 17, 1981 CE · Melbourne, Australia · Vidhyamitra","description":"December 17, 1981 CE for Melbourne, Australia: Kṛṣṇa Saptamī, sūryodaya 04:54, sūryāsta 19:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/melbourne/1981-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/melbourne/1981-12-17","sa":"https://sa.vidhyamitra.com/city/melbourne/1981-12-17","hi":"https://hi.vidhyamitra.com/city/melbourne/1981-12-17","x-default":"https://vidhyamitra.com/city/melbourne/1981-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T03:35:46.975Z","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":"2026-06-01T03:35:46.975Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T03:35:46.975Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}