{"id":"vidhyamitra:city-day:perth:1998-10-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1998-10-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-10-12","date_display":"October 12, 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":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451098.770833,"kali_year":5100,"ahargana":1862633.2708,"sun":{"sidereal_longitude":173.9436,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":75.3508,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.4071,"elapsed_within_tithi_degrees":9.4071},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":75.3508,"elapsed_within_degrees":8.6841},"yoga":{"number":19,"name":"Parigha","sum_longitude":249.2944},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451098.770833,"ahargana":1862633.2708,"kali_year":5100,"ayanamsa_lahiri":23.8359,"grahas":{"sun":{"sidereal_longitude":174.67976,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":79.38765999999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false,"latitude":-3.6102},"mars":{"sidereal_longitude":128.93845999999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":185.96705999999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":326.05476,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":170.04966000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":7.1768599999999765,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":128.7257,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":308.7257,"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":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451098.770833,"kali_year":5100,"ahargana":1862633.2708,"sun":{"sidereal_longitude":173.9436,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":75.3508,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":261.4071,"elapsed_within_tithi_degrees":9.4071},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":75.3508,"elapsed_within_degrees":8.6841},"yoga":{"number":19,"name":"Parigha","sum_longitude":249.2944},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.61,"elongation":98.593},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.61,"opposition_distance":81.407}},"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":"05:40","sunsetLocal":"18:25","solarNoonLocal":"12:02","dayLengthHours":12.739742258154568,"dayLengthDisplay":"12 Hours 44 Mins 23 Secs","nightLengthDisplay":"11 Hours 15 Mins 37 Secs","moonriseLocal":"00:39","moonsetLocal":"10:44","rahuKala":{"name":"Rāhu Kāla","start":"07:16","end":"08:51","startHours":7.261572205039039,"endHours":8.85403998730836,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:27","end":"12:02","startHours":10.446507769577682,"endHours":12.038975551847003,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:38","end":"15:13","startHours":13.631443334116323,"endHours":15.223911116385644,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:04","startHours":8.64171094967245,"endHours":9.066369024944269,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:12","end":"06:32","startHours":6.199927016859491,"endHours":6.539653477076946,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:28","startHours":11.614317476575183,"endHours":12.463633627118819,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:58","end":"04:49","startHours":3.970472121682442,"endHours":4.81978827222608,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:36","end":"05:40","startHours":4.607459234590171,"endHours":5.669104422769718,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:01","startHours":14.162265928206097,"endHours":15.011582078749734,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.208846680924285,"endHours":18.608846680924284,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:56","startHours":18.408846680924285,"endHours":18.939669275014058,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.158846680924285,"endHours":19.908846680924285,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:28","startHours":23.614317476575184,"endHours":24.46363362711882,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:40","end":"07:16","startHours":5.669104422769718,"endHours":7.261572205039039,"quality":"auspicious"},{"name":"Kāla","start":"07:16","end":"08:51","startHours":7.261572205039039,"endHours":8.85403998730836,"quality":"inauspicious"},{"name":"Śubha","start":"08:51","end":"10:27","startHours":8.85403998730836,"endHours":10.446507769577682,"quality":"auspicious"},{"name":"Roga","start":"10:27","end":"12:02","startHours":10.446507769577682,"endHours":12.038975551847003,"quality":"inauspicious"},{"name":"Udveg","start":"12:02","end":"13:38","startHours":12.038975551847003,"endHours":13.631443334116323,"quality":"inauspicious"},{"name":"Chala","start":"13:38","end":"15:13","startHours":13.631443334116323,"endHours":15.223911116385644,"quality":"neutral"},{"name":"Labha","start":"15:13","end":"16:49","startHours":15.223911116385644,"endHours":16.816378898654964,"quality":"auspicious"},{"name":"Amṛta","start":"16:49","end":"18:25","startHours":16.816378898654964,"endHours":18.408846680924285,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:25","end":"19:49","startHours":18.408846680924285,"endHours":19.816378898654964,"quality":"neutral"},{"name":"Labha","start":"19:49","end":"21:13","startHours":19.816378898654964,"endHours":21.223911116385644,"quality":"auspicious"},{"name":"Amṛta","start":"21:13","end":"22:38","startHours":21.223911116385644,"endHours":22.63144333411632,"quality":"auspicious"},{"name":"Kāla","start":"22:38","end":"00:02","startHours":22.63144333411632,"endHours":24.038975551847003,"quality":"inauspicious"},{"name":"Śubha","start":"00:02","end":"01:27","startHours":24.038975551847003,"endHours":25.44650776957768,"quality":"auspicious"},{"name":"Roga","start":"01:27","end":"02:51","startHours":25.44650776957768,"endHours":26.854039987308358,"quality":"inauspicious"},{"name":"Udveg","start":"02:51","end":"04:16","startHours":26.854039987308358,"endHours":28.261572205039037,"quality":"inauspicious"},{"name":"Chala","start":"04:16","end":"05:40","startHours":28.261572205039037,"endHours":29.669104422769717,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:40","end":"06:40","startHours":5.669104422769718,"endHours":6.669104422769718,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:40","end":"07:40","startHours":6.669104422769718,"endHours":7.669104422769718,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:40","end":"08:40","startHours":7.669104422769718,"endHours":8.669104422769717,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:40","end":"09:40","startHours":8.669104422769717,"endHours":9.669104422769717,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:40","end":"10:40","startHours":9.669104422769717,"endHours":10.669104422769717,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:40","end":"11:40","startHours":10.669104422769717,"endHours":11.669104422769717,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:40","end":"12:40","startHours":11.669104422769717,"endHours":12.669104422769717,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:40","end":"13:40","startHours":12.669104422769717,"endHours":13.669104422769717,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:40","end":"14:40","startHours":13.669104422769717,"endHours":14.669104422769717,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:40","end":"15:40","startHours":14.669104422769717,"endHours":15.669104422769717,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:40","end":"16:40","startHours":15.669104422769717,"endHours":16.669104422769717,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:40","end":"17:40","startHours":16.669104422769717,"endHours":17.669104422769717,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:40","end":"18:40","startHours":17.669104422769717,"endHours":18.669104422769717,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:40","end":"19:40","startHours":18.669104422769717,"endHours":19.669104422769717,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:40","end":"20:40","startHours":19.669104422769717,"endHours":20.669104422769717,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:40","end":"21:40","startHours":20.669104422769717,"endHours":21.669104422769717,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:40","end":"22:40","startHours":21.669104422769717,"endHours":22.669104422769717,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:40","end":"23:40","startHours":22.669104422769717,"endHours":23.669104422769717,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:40","end":"00:40","startHours":23.669104422769717,"endHours":24.669104422769717,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:40","end":"01:40","startHours":24.669104422769717,"endHours":25.669104422769717,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:40","end":"02:40","startHours":25.669104422769717,"endHours":26.669104422769717,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:40","end":"03:40","startHours":26.669104422769717,"endHours":27.669104422769717,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:40","end":"04:40","startHours":27.669104422769717,"endHours":28.669104422769717,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:40","end":"05:40","startHours":28.669104422769717,"endHours":29.669104422769717,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","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":-7.2561499583409175,"eotMinutes":14.219466889179907,"ayanamsa":23.8359}},"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 Saptamī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 12, 1998 CE · Perth, Australia · Vidhyamitra","description":"October 12, 1998 CE for Perth, Australia: Kṛṣṇa Saptamī, sūryodaya 05:40, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1998-10-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1998-10-12","sa":"https://sa.vidhyamitra.com/city/perth/1998-10-12","hi":"https://hi.vidhyamitra.com/city/perth/1998-10-12","x-default":"https://vidhyamitra.com/city/perth/1998-10-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:23:14.346Z","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":"2026-05-31T19:23:14.346Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:23:14.346Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}