{"id":"vidhyamitra:city-day:perth:1998-10-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1998-10-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-10-15","date_display":"October 15, 1998 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":1998,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451101.770833,"kali_year":5100,"ahargana":1862636.2708,"sun":{"sidereal_longitude":176.9185,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":114.9485,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.03,"elapsed_within_tithi_degrees":10.03},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":114.9485,"elapsed_within_degrees":8.2818},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.867},"karana":{"half_tithi_index":49,"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":1998,"month":10,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451101.770833,"ahargana":1862636.2708,"kali_year":5100,"ayanamsa_lahiri":23.836,"grahas":{"sun":{"sidereal_longitude":177.65004499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":118.155845,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false,"latitude":-1.0585},"mars":{"sidereal_longitude":130.75984499999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":190.65804500000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":325.7630449999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":173.798945,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":6.943345000000022,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":128.5667,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":308.5667,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"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":1998,"month":10,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451101.770833,"kali_year":5100,"ahargana":1862636.2708,"sun":{"sidereal_longitude":176.9185,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":114.9485,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.03,"elapsed_within_tithi_degrees":10.03},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3,"moon_longitude":114.9485,"elapsed_within_degrees":8.2818},"yoga":{"number":22,"name":"Sādhya","sum_longitude":291.867},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.059,"elongation":61.97},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.059,"opposition_distance":118.03}},"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":"05:37","sunsetLocal":"18:27","solarNoonLocal":"12:02","dayLengthHours":12.835538714177627,"dayLengthDisplay":"12 Hours 50 Mins 08 Secs","nightLengthDisplay":"11 Hours 09 Mins 52 Secs","moonriseLocal":"02:37","moonsetLocal":"13:30","rahuKala":{"name":"Rāhu Kāla","start":"13:38","end":"15:14","startHours":13.63279516641707,"endHours":15.237237505689272,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:37","end":"07:13","startHours":5.610583470056053,"endHours":7.215025809328257,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:49","end":"10:25","startHours":8.81946814860046,"endHours":10.423910487872663,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:02","startHours":8.605542503364166,"endHours":9.033393793836753,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:09","end":"06:29","startHours":6.145397583146787,"endHours":6.487678615524857,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.60050153667228,"endHours":12.456204117617453,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:54","end":"04:45","startHours":3.8991783081657028,"endHours":4.754880889110877,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:37","startHours":4.540955243874584,"endHours":5.610583470056053,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:01","startHours":14.167609279507804,"endHours":15.02331186045298,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.24612218423368,"endHours":18.64612218423368,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:59","startHours":18.44612218423368,"endHours":18.980936297324416,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.19612218423368,"endHours":19.94612218423368,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.600501536672276,"endHours":24.456204117617453,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:37","end":"07:13","startHours":5.610583470056053,"endHours":7.215025809328257,"quality":"auspicious"},{"name":"Roga","start":"07:13","end":"08:49","startHours":7.215025809328257,"endHours":8.81946814860046,"quality":"inauspicious"},{"name":"Udveg","start":"08:49","end":"10:25","startHours":8.81946814860046,"endHours":10.423910487872663,"quality":"inauspicious"},{"name":"Chala","start":"10:25","end":"12:02","startHours":10.423910487872663,"endHours":12.028352827144866,"quality":"neutral"},{"name":"Labha","start":"12:02","end":"13:38","startHours":12.028352827144866,"endHours":13.63279516641707,"quality":"auspicious"},{"name":"Amṛta","start":"13:38","end":"15:14","startHours":13.63279516641707,"endHours":15.237237505689272,"quality":"auspicious"},{"name":"Kāla","start":"15:14","end":"16:51","startHours":15.237237505689272,"endHours":16.841679844961476,"quality":"inauspicious"},{"name":"Śubha","start":"16:51","end":"18:27","startHours":16.841679844961476,"endHours":18.44612218423368,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:27","end":"19:51","startHours":18.44612218423368,"endHours":19.841679844961476,"quality":"auspicious"},{"name":"Kāla","start":"19:51","end":"21:14","startHours":19.841679844961476,"endHours":21.237237505689272,"quality":"inauspicious"},{"name":"Śubha","start":"21:14","end":"22:38","startHours":21.237237505689272,"endHours":22.63279516641707,"quality":"auspicious"},{"name":"Roga","start":"22:38","end":"00:02","startHours":22.63279516641707,"endHours":24.028352827144865,"quality":"inauspicious"},{"name":"Udveg","start":"00:02","end":"01:25","startHours":24.028352827144865,"endHours":25.42391048787266,"quality":"inauspicious"},{"name":"Chala","start":"01:25","end":"02:49","startHours":25.42391048787266,"endHours":26.81946814860046,"quality":"neutral"},{"name":"Labha","start":"02:49","end":"04:13","startHours":26.81946814860046,"endHours":28.215025809328257,"quality":"auspicious"},{"name":"Amṛta","start":"04:13","end":"05:37","startHours":28.215025809328257,"endHours":29.610583470056053,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:37","end":"06:37","startHours":5.610583470056053,"endHours":6.610583470056053,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:37","end":"07:37","startHours":6.610583470056053,"endHours":7.610583470056053,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:37","end":"08:37","startHours":7.610583470056053,"endHours":8.610583470056053,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:37","end":"09:37","startHours":8.610583470056053,"endHours":9.610583470056053,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:37","end":"10:37","startHours":9.610583470056053,"endHours":10.610583470056053,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:37","end":"11:37","startHours":10.610583470056053,"endHours":11.610583470056053,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:37","end":"12:37","startHours":11.610583470056053,"endHours":12.610583470056053,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:37","end":"13:37","startHours":12.610583470056053,"endHours":13.610583470056053,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:37","end":"14:37","startHours":13.610583470056053,"endHours":14.610583470056053,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:37","end":"15:37","startHours":14.610583470056053,"endHours":15.610583470056053,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:37","end":"16:37","startHours":15.610583470056053,"endHours":16.610583470056053,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:37","end":"17:37","startHours":16.610583470056053,"endHours":17.610583470056053,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:37","end":"18:37","startHours":17.610583470056053,"endHours":18.610583470056053,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:37","end":"19:37","startHours":18.610583470056053,"endHours":19.610583470056053,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:37","end":"20:37","startHours":19.610583470056053,"endHours":20.610583470056053,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:37","end":"21:37","startHours":20.610583470056053,"endHours":21.610583470056053,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:37","end":"22:37","startHours":21.610583470056053,"endHours":22.610583470056053,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:37","end":"23:37","startHours":22.610583470056053,"endHours":23.610583470056053,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:37","end":"00:37","startHours":23.610583470056053,"endHours":24.610583470056053,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:37","end":"01:37","startHours":24.610583470056053,"endHours":25.610583470056053,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:37","end":"02:37","startHours":25.610583470056053,"endHours":26.610583470056053,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:37","end":"03:37","startHours":26.610583470056053,"endHours":27.610583470056053,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:37","end":"04:37","startHours":27.610583470056053,"endHours":28.610583470056053,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:37","end":"05:37","startHours":28.610583470056053,"endHours":29.610583470056053,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-8.376617871907245,"eotMinutes":14.85683037130801,"ayanamsa":23.836}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"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 Daśamī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"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":"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 15, 1998 CE · Perth, Australia · Vidhyamitra","description":"October 15, 1998 CE for Perth, Australia: Kṛṣṇa Daśamī, sūryodaya 05:37, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1998-10-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1998-10-15","sa":"https://sa.vidhyamitra.com/city/perth/1998-10-15","hi":"https://hi.vidhyamitra.com/city/perth/1998-10-15","x-default":"https://vidhyamitra.com/city/perth/1998-10-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T18:52:46.968Z","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":"2026-05-31T18:52:46.968Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T18:52:46.968Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}