{"id":"vidhyamitra:city-day:melbourne:1981-09-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/melbourne/1981-09-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-20","date_display":"September 20, 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":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444867.770833,"kali_year":5083,"ahargana":1856402.2708,"sun":{"sidereal_longitude":152.7095,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":50.2587,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.5492,"elapsed_within_tithi_degrees":5.5492},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4,"moon_longitude":50.2587,"elapsed_within_degrees":10.2587},"yoga":{"number":16,"name":"Siddhi","sum_longitude":202.9681},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":9,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444867.770833,"ahargana":1856402.2708,"kali_year":5083,"ayanamsa_lahiri":23.5976,"grahas":{"sun":{"sidereal_longitude":153.40132999999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":53.11392999999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false,"latitude":-3.3748},"mars":{"sidereal_longitude":107.93743,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":179.62263000000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":172.30123000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"venus":{"sidereal_longitude":194.93502999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":166.96113000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":98.8741,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.8741,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"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":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444867.770833,"kali_year":5083,"ahargana":1856402.2708,"sun":{"sidereal_longitude":152.7095,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":50.2587,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.5492,"elapsed_within_tithi_degrees":5.5492},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4,"moon_longitude":50.2587,"elapsed_within_degrees":10.2587},"yoga":{"number":16,"name":"Siddhi","sum_longitude":202.9681},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.375,"elongation":102.451},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.375,"opposition_distance":77.549}},"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":"06:12","sunsetLocal":"18:13","solarNoonLocal":"12:13","dayLengthHours":12.017134569598321,"dayLengthDisplay":"12 Hours 01 Mins 02 Secs","nightLengthDisplay":"11 Hours 58 Mins 58 Secs","moonriseLocal":"00:44","moonsetLocal":"10:19","rahuKala":{"name":"Rāhu Kāla","start":"16:43","end":"18:13","startHours":16.719770217573462,"endHours":18.221912038773254,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:43","startHours":12.213344753974095,"endHours":13.715486575173884,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:13","end":"16:43","startHours":15.217628396373675,"endHours":16.719770217573462,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:25","startHours":9.008775535414543,"endHours":9.409346687734486,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:42","end":"07:02","startHours":6.705491409574863,"endHours":7.025948331430818,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:37","startHours":11.81277360165415,"endHours":12.61391590629404,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:36","end":"05:24","startHours":4.6024928598951576,"endHours":5.4036351645350456,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:12","end":"06:12","startHours":5.203349588375073,"endHours":6.204777469174934,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:01","startHours":14.216200515573815,"endHours":15.017342820213704,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.021912038773255,"endHours":18.421912038773254,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:43","startHours":18.221912038773254,"endHours":18.722625979173184,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.971912038773254,"endHours":19.721912038773254,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:37","startHours":23.81277360165415,"endHours":24.61391590629404,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:12","end":"07:42","startHours":6.204777469174934,"endHours":7.7069192903747235,"quality":"inauspicious"},{"name":"Chala","start":"07:42","end":"09:13","startHours":7.7069192903747235,"endHours":9.209061111574513,"quality":"neutral"},{"name":"Labha","start":"09:13","end":"10:43","startHours":9.209061111574513,"endHours":10.711202932774304,"quality":"auspicious"},{"name":"Amṛta","start":"10:43","end":"12:13","startHours":10.711202932774304,"endHours":12.213344753974095,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:43","startHours":12.213344753974095,"endHours":13.715486575173884,"quality":"inauspicious"},{"name":"Śubha","start":"13:43","end":"15:13","startHours":13.715486575173884,"endHours":15.217628396373675,"quality":"auspicious"},{"name":"Roga","start":"15:13","end":"16:43","startHours":15.217628396373675,"endHours":16.719770217573462,"quality":"inauspicious"},{"name":"Udveg","start":"16:43","end":"18:13","startHours":16.719770217573462,"endHours":18.221912038773254,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:13","end":"19:43","startHours":18.221912038773254,"endHours":19.719770217573465,"quality":"auspicious"},{"name":"Roga","start":"19:43","end":"21:13","startHours":19.719770217573465,"endHours":21.217628396373673,"quality":"inauspicious"},{"name":"Udveg","start":"21:13","end":"22:43","startHours":21.217628396373673,"endHours":22.715486575173884,"quality":"inauspicious"},{"name":"Chala","start":"22:43","end":"00:13","startHours":22.715486575173884,"endHours":24.213344753974095,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:43","startHours":24.213344753974095,"endHours":25.711202932774306,"quality":"auspicious"},{"name":"Amṛta","start":"01:43","end":"03:13","startHours":25.711202932774306,"endHours":27.209061111574513,"quality":"auspicious"},{"name":"Kāla","start":"03:13","end":"04:42","startHours":27.209061111574513,"endHours":28.706919290374724,"quality":"inauspicious"},{"name":"Śubha","start":"04:42","end":"06:12","startHours":28.706919290374724,"endHours":30.204777469174935,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:12","end":"07:12","startHours":6.204777469174934,"endHours":7.204777469174934,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:12","end":"08:12","startHours":7.204777469174934,"endHours":8.204777469174934,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:12","end":"09:12","startHours":8.204777469174934,"endHours":9.204777469174934,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:12","end":"10:12","startHours":9.204777469174934,"endHours":10.204777469174934,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:12","end":"11:12","startHours":10.204777469174934,"endHours":11.204777469174934,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:12","end":"12:12","startHours":11.204777469174934,"endHours":12.204777469174934,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:12","end":"13:12","startHours":12.204777469174934,"endHours":13.204777469174934,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:12","end":"14:12","startHours":13.204777469174934,"endHours":14.204777469174934,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:12","end":"15:12","startHours":14.204777469174934,"endHours":15.204777469174934,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:12","end":"16:12","startHours":15.204777469174934,"endHours":16.204777469174935,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:12","end":"17:12","startHours":16.204777469174935,"endHours":17.204777469174935,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:12","end":"18:12","startHours":17.204777469174935,"endHours":18.204777469174935,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:12","end":"19:12","startHours":18.204777469174935,"endHours":19.204777469174935,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:12","end":"20:12","startHours":19.204777469174935,"endHours":20.204777469174935,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:12","end":"21:12","startHours":20.204777469174935,"endHours":21.204777469174935,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:12","end":"22:12","startHours":21.204777469174935,"endHours":22.204777469174935,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:12","end":"23:12","startHours":22.204777469174935,"endHours":23.204777469174935,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:12","end":"00:12","startHours":23.204777469174935,"endHours":24.204777469174935,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:12","end":"01:12","startHours":24.204777469174935,"endHours":25.204777469174935,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:12","end":"02:12","startHours":25.204777469174935,"endHours":26.204777469174935,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:12","end":"03:12","startHours":26.204777469174935,"endHours":27.204777469174935,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:12","end":"04:12","startHours":27.204777469174935,"endHours":28.204777469174935,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:12","end":"05:12","startHours":28.204777469174935,"endHours":29.204777469174935,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:12","end":"06:12","startHours":29.204777469174935,"endHours":30.204777469174935,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":1.1931634825162696,"eotMinutes":7.346914761554353,"ayanamsa":23.5976}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Saptamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","relevance":0.5}]},"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 September 20, 1981 CE · Melbourne, Australia · Vidhyamitra","description":"September 20, 1981 CE for Melbourne, Australia: Kṛṣṇa Saptamī, sūryodaya 06:12, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/melbourne/1981-09-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/melbourne/1981-09-20","sa":"https://sa.vidhyamitra.com/city/melbourne/1981-09-20","hi":"https://hi.vidhyamitra.com/city/melbourne/1981-09-20","x-default":"https://vidhyamitra.com/city/melbourne/1981-09-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T10:03:06.962Z","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":"2026-06-02T10:03:06.962Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T10:03:06.962Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}