{"id":"vidhyamitra:city-day:perth:1979-10-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1979-10-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-10-07","date_display":"October 7, 1979 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":1979,"month":10,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444153.770833,"kali_year":5081,"ahargana":1855688.2708,"sun":{"sidereal_longitude":168.9171,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":6.2262,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.3091,"elapsed_within_tithi_degrees":5.3091},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":6.2262,"elapsed_within_degrees":6.2262},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":175.1434},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":1979,"month":10,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444153.770833,"ahargana":1855688.2708,"kali_year":5081,"ayanamsa_lahiri":23.5703,"grahas":{"sun":{"sidereal_longitude":169.61201000000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"moon":{"sidereal_longitude":6.553710000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false,"latitude":-3.4214},"mars":{"sidereal_longitude":103.85791,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":186.44541000000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":127.65641,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":181.29120999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":146.73320999999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":136.7052,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":316.7052,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1979,"month":10,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444153.770833,"kali_year":5081,"ahargana":1855688.2708,"sun":{"sidereal_longitude":168.9171,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":6.2262,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.3091,"elapsed_within_tithi_degrees":5.3091},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":6.2262,"elapsed_within_degrees":6.2262},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":175.1434},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.421,"elongation":162.691},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.421,"opposition_distance":17.309}},"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":"05:47","sunsetLocal":"18:21","solarNoonLocal":"12:04","dayLengthHours":12.565892481373261,"dayLengthDisplay":"12 Hours 33 Mins 57 Secs","nightLengthDisplay":"11 Hours 26 Mins 03 Secs","moonriseLocal":"19:38","moonsetLocal":"06:45","rahuKala":{"name":"Rāhu Kāla","start":"16:46","end":"18:21","startHours":16.772197177031313,"endHours":18.34293373720297,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:04","end":"13:38","startHours":12.059987496516339,"endHours":13.630724056687995,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:12","end":"16:46","startHours":15.201460616859652,"endHours":16.772197177031313,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:43","end":"09:08","startHours":8.709082834816801,"endHours":9.127945917529244,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:38","startHours":6.30062010922026,"endHours":6.635710575390213,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:29","startHours":11.641124413803897,"endHours":12.47885057922878,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:06","end":"04:56","startHours":4.101588924979939,"endHours":4.939315090404823,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:44","end":"05:47","startHours":4.729883549048602,"endHours":5.777041255829707,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:00","startHours":14.154302910078549,"endHours":14.992029075503433,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:09","end":"18:33","startHours":18.14293373720297,"endHours":18.54293373720297,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:21","end":"18:52","startHours":18.34293373720297,"endHours":18.866512590593523,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:06","end":"19:51","startHours":18.09293373720297,"endHours":19.84293373720297,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:29","startHours":23.641124413803897,"endHours":24.47885057922878,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:47","end":"07:21","startHours":5.777041255829707,"endHours":7.347777816001365,"quality":"inauspicious"},{"name":"Chala","start":"07:21","end":"08:55","startHours":7.347777816001365,"endHours":8.918514376173022,"quality":"neutral"},{"name":"Labha","start":"08:55","end":"10:29","startHours":8.918514376173022,"endHours":10.48925093634468,"quality":"auspicious"},{"name":"Amṛta","start":"10:29","end":"12:04","startHours":10.48925093634468,"endHours":12.059987496516339,"quality":"auspicious"},{"name":"Kāla","start":"12:04","end":"13:38","startHours":12.059987496516339,"endHours":13.630724056687995,"quality":"inauspicious"},{"name":"Śubha","start":"13:38","end":"15:12","startHours":13.630724056687995,"endHours":15.201460616859652,"quality":"auspicious"},{"name":"Roga","start":"15:12","end":"16:46","startHours":15.201460616859652,"endHours":16.772197177031313,"quality":"inauspicious"},{"name":"Udveg","start":"16:46","end":"18:21","startHours":16.772197177031313,"endHours":18.34293373720297,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:21","end":"19:46","startHours":18.34293373720297,"endHours":19.772197177031313,"quality":"auspicious"},{"name":"Roga","start":"19:46","end":"21:12","startHours":19.772197177031313,"endHours":21.201460616859656,"quality":"inauspicious"},{"name":"Udveg","start":"21:12","end":"22:38","startHours":21.201460616859656,"endHours":22.630724056687995,"quality":"inauspicious"},{"name":"Chala","start":"22:38","end":"00:04","startHours":22.630724056687995,"endHours":24.05998749651634,"quality":"neutral"},{"name":"Labha","start":"00:04","end":"01:29","startHours":24.05998749651634,"endHours":25.489250936344682,"quality":"auspicious"},{"name":"Amṛta","start":"01:29","end":"02:55","startHours":25.489250936344682,"endHours":26.91851437617302,"quality":"auspicious"},{"name":"Kāla","start":"02:55","end":"04:21","startHours":26.91851437617302,"endHours":28.347777816001365,"quality":"inauspicious"},{"name":"Śubha","start":"04:21","end":"05:47","startHours":28.347777816001365,"endHours":29.777041255829708,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:47","end":"06:47","startHours":5.777041255829707,"endHours":6.777041255829707,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:47","end":"07:47","startHours":6.777041255829707,"endHours":7.777041255829707,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:47","end":"08:47","startHours":7.777041255829707,"endHours":8.777041255829708,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:47","end":"09:47","startHours":8.777041255829708,"endHours":9.777041255829708,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:47","end":"10:47","startHours":9.777041255829708,"endHours":10.777041255829708,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:47","end":"11:47","startHours":10.777041255829708,"endHours":11.777041255829708,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:47","end":"12:47","startHours":11.777041255829708,"endHours":12.777041255829708,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:47","end":"13:47","startHours":12.777041255829708,"endHours":13.777041255829708,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:47","end":"14:47","startHours":13.777041255829708,"endHours":14.777041255829708,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:47","end":"15:47","startHours":14.777041255829708,"endHours":15.777041255829708,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:47","end":"16:47","startHours":15.777041255829708,"endHours":16.777041255829708,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:47","end":"17:47","startHours":16.777041255829708,"endHours":17.777041255829708,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:47","end":"18:47","startHours":17.777041255829708,"endHours":18.777041255829708,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:47","end":"19:47","startHours":18.777041255829708,"endHours":19.777041255829708,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:47","end":"20:47","startHours":19.777041255829708,"endHours":20.777041255829708,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:47","end":"21:47","startHours":20.777041255829708,"endHours":21.777041255829708,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:47","end":"22:47","startHours":21.777041255829708,"endHours":22.777041255829708,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:47","end":"23:47","startHours":22.777041255829708,"endHours":23.777041255829708,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:47","end":"00:47","startHours":23.777041255829708,"endHours":24.777041255829708,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:47","end":"01:47","startHours":24.777041255829708,"endHours":25.777041255829708,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:47","end":"02:47","startHours":25.777041255829708,"endHours":26.777041255829708,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:47","end":"03:47","startHours":26.777041255829708,"endHours":27.777041255829708,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:47","end":"04:47","startHours":27.777041255829708,"endHours":28.777041255829708,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:47","end":"05:47","startHours":28.777041255829708,"endHours":29.777041255829708,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-5.204051119424879,"eotMinutes":12.958750209019716,"ayanamsa":23.5703}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","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":"Kārtika Kṛṣṇa Dvitīyā · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"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":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 October 7, 1979 CE · Perth, Australia · Vidhyamitra","description":"October 7, 1979 CE for Perth, Australia: Kṛṣṇa Dvitīyā, sūryodaya 05:47, sūryāsta 18:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1979-10-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1979-10-07","sa":"https://sa.vidhyamitra.com/city/perth/1979-10-07","hi":"https://hi.vidhyamitra.com/city/perth/1979-10-07","x-default":"https://vidhyamitra.com/city/perth/1979-10-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:25:28.299Z","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":"2026-05-31T06:25:28.299Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:25:28.299Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}