{"id":"vidhyamitra:city-day:perth:2012-10-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2012-10-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-10-21","date_display":"October 21, 2012 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":2012,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456221.770833,"kali_year":5114,"ahargana":1867756.2708,"sun":{"sidereal_longitude":183.2635,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":256.1113,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":72.8478,"elapsed_within_tithi_degrees":0.8478},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":256.1113,"elapsed_within_degrees":2.7779},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.3748},"karana":{"half_tithi_index":12,"name":"Gara"},"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":2012,"month":10,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456221.770833,"ahargana":1867756.2708,"kali_year":5114,"ayanamsa_lahiri":24.0319,"grahas":{"sun":{"sidereal_longitude":184.01542300000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":259.83832299999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false,"latitude":2.8196},"mars":{"sidereal_longitude":225.791923,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":207.16562299999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":51.532623,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":146.77752299999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":187.512523,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":217.2845,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":37.2845,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2012,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456221.770833,"kali_year":5114,"ahargana":1867756.2708,"sun":{"sidereal_longitude":183.2635,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":256.1113,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":72.8478,"elapsed_within_tithi_degrees":0.8478},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":256.1113,"elapsed_within_degrees":2.7779},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":79.3748},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.82,"elongation":72.848},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.82,"opposition_distance":107.152}},"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":"05:29","sunsetLocal":"18:32","solarNoonLocal":"12:01","dayLengthHours":13.043511859484845,"dayLengthDisplay":"13 Hours 02 Mins 37 Secs","nightLengthDisplay":"10 Hours 57 Mins 23 Secs","moonriseLocal":"10:00","moonsetLocal":"00:08","rahuKala":{"name":"Rāhu Kāla","start":"16:54","end":"18:32","startHours":16.903459937861737,"endHours":18.533898920297343,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:01","end":"13:39","startHours":12.01214299055492,"endHours":13.642581972990527,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:16","end":"16:54","startHours":15.273020955426132,"endHours":16.903459937861737,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:32","end":"08:58","startHours":8.533873161358962,"endHours":8.968656890008457,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:02","end":"06:23","startHours":6.033866721624367,"endHours":6.381693704543963,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.577359261905427,"endHours":12.446926719204415,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:45","end":"04:37","startHours":3.7512521462145187,"endHours":4.6208196035135085,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:24","end":"05:29","startHours":4.4034277391887615,"endHours":5.490387060812498,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:03","startHours":14.186061633802394,"endHours":15.055629091101384,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.333898920297344,"endHours":18.733898920297342,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:05","startHours":18.533898920297343,"endHours":19.077378581109212,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.283898920297343,"endHours":20.033898920297343,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.577359261905425,"endHours":24.446926719204416,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:29","end":"07:07","startHours":5.490387060812498,"endHours":7.120826043248104,"quality":"inauspicious"},{"name":"Chala","start":"07:07","end":"08:45","startHours":7.120826043248104,"endHours":8.75126502568371,"quality":"neutral"},{"name":"Labha","start":"08:45","end":"10:23","startHours":8.75126502568371,"endHours":10.381704008119314,"quality":"auspicious"},{"name":"Amṛta","start":"10:23","end":"12:01","startHours":10.381704008119314,"endHours":12.01214299055492,"quality":"auspicious"},{"name":"Kāla","start":"12:01","end":"13:39","startHours":12.01214299055492,"endHours":13.642581972990527,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:16","startHours":13.642581972990527,"endHours":15.273020955426132,"quality":"auspicious"},{"name":"Roga","start":"15:16","end":"16:54","startHours":15.273020955426132,"endHours":16.903459937861737,"quality":"inauspicious"},{"name":"Udveg","start":"16:54","end":"18:32","startHours":16.903459937861737,"endHours":18.533898920297343,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:32","end":"19:54","startHours":18.533898920297343,"endHours":19.903459937861737,"quality":"auspicious"},{"name":"Roga","start":"19:54","end":"21:16","startHours":19.903459937861737,"endHours":21.273020955426134,"quality":"inauspicious"},{"name":"Udveg","start":"21:16","end":"22:39","startHours":21.273020955426134,"endHours":22.642581972990527,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:01","startHours":22.642581972990527,"endHours":24.01214299055492,"quality":"neutral"},{"name":"Labha","start":"00:01","end":"01:23","startHours":24.01214299055492,"endHours":25.381704008119314,"quality":"auspicious"},{"name":"Amṛta","start":"01:23","end":"02:45","startHours":25.381704008119314,"endHours":26.751265025683708,"quality":"auspicious"},{"name":"Kāla","start":"02:45","end":"04:07","startHours":26.751265025683708,"endHours":28.120826043248105,"quality":"inauspicious"},{"name":"Śubha","start":"04:07","end":"05:29","startHours":28.120826043248105,"endHours":29.4903870608125,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:29","end":"06:29","startHours":5.490387060812498,"endHours":6.490387060812498,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:29","end":"07:29","startHours":6.490387060812498,"endHours":7.490387060812498,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:29","end":"08:29","startHours":7.490387060812498,"endHours":8.490387060812498,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:29","end":"09:29","startHours":8.490387060812498,"endHours":9.490387060812498,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:29","end":"10:29","startHours":9.490387060812498,"endHours":10.490387060812498,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:29","end":"11:29","startHours":10.490387060812498,"endHours":11.490387060812498,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:29","end":"12:29","startHours":11.490387060812498,"endHours":12.490387060812498,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:29","end":"13:29","startHours":12.490387060812498,"endHours":13.490387060812498,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:29","end":"14:29","startHours":13.490387060812498,"endHours":14.490387060812498,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:29","end":"15:29","startHours":14.490387060812498,"endHours":15.490387060812498,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:29","end":"16:29","startHours":15.490387060812498,"endHours":16.4903870608125,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:29","end":"17:29","startHours":16.4903870608125,"endHours":17.4903870608125,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:29","end":"18:29","startHours":17.4903870608125,"endHours":18.4903870608125,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:29","end":"19:29","startHours":18.4903870608125,"endHours":19.4903870608125,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:29","end":"20:29","startHours":19.4903870608125,"endHours":20.4903870608125,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:29","end":"21:29","startHours":20.4903870608125,"endHours":21.4903870608125,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:29","end":"22:29","startHours":21.4903870608125,"endHours":22.4903870608125,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:29","end":"23:29","startHours":22.4903870608125,"endHours":23.4903870608125,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:29","end":"00:29","startHours":23.4903870608125,"endHours":24.4903870608125,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:29","end":"01:29","startHours":24.4903870608125,"endHours":25.4903870608125,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:29","end":"02:29","startHours":25.4903870608125,"endHours":26.4903870608125,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:29","end":"03:29","startHours":26.4903870608125,"endHours":27.4903870608125,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:29","end":"04:29","startHours":27.4903870608125,"endHours":28.4903870608125,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:29","end":"05:29","startHours":28.4903870608125,"endHours":29.4903870608125,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.778579669811402,"eotMinutes":15.829420566704727,"ayanamsa":24.0319}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Saptamī · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"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":[]},"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 21, 2012 CE · Perth, Australia · Vidhyamitra","description":"October 21, 2012 CE for Perth, Australia: Śukla Saptamī, sūryodaya 05:29, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2012-10-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2012-10-21","sa":"https://sa.vidhyamitra.com/city/perth/2012-10-21","hi":"https://hi.vidhyamitra.com/city/perth/2012-10-21","x-default":"https://vidhyamitra.com/city/perth/2012-10-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T03:07:26.452Z","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":"2026-05-16T03:07:26.452Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T03:07:26.452Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}