{"id":"vidhyamitra:city-day:perth:1998-02-05:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1998-02-05","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-02-05","date_display":"February 5, 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":2,"day":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450849.770833,"kali_year":5099,"ahargana":1862384.2708,"sun":{"sidereal_longitude":292.249,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":34.2058,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":101.9568,"elapsed_within_tithi_degrees":5.9568},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":34.2058,"elapsed_within_degrees":7.5392},"yoga":{"number":25,"name":"Brahma","sum_longitude":326.4548},"karana":{"half_tithi_index":16,"name":"Bālava"},"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":2,"day":5,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450849.770833,"ahargana":1862384.2708,"kali_year":5099,"ayanamsa_lahiri":23.8264,"grahas":{"sun":{"sidereal_longitude":292.201773,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":35.98397299999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":-4.2863},"mars":{"sidereal_longitude":314.5890730000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":280.08057299999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":306.299973,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":264.529573,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":351.919673,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":141.9189,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":321.9189,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":2,"day":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450849.770833,"kali_year":5099,"ahargana":1862384.2708,"sun":{"sidereal_longitude":292.249,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":34.2058,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":101.9568,"elapsed_within_tithi_degrees":5.9568},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":34.2058,"elapsed_within_degrees":7.5392},"yoga":{"number":25,"name":"Brahma","sum_longitude":326.4548},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.286,"elongation":101.957},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.286,"opposition_distance":78.043}},"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":"05:45","sunsetLocal":"19:16","solarNoonLocal":"12:31","dayLengthHours":13.515028189999413,"dayLengthDisplay":"13 Hours 30 Mins 54 Secs","nightLengthDisplay":"10 Hours 29 Mins 06 Secs","moonriseLocal":"14:16","moonsetLocal":"00:36","rahuKala":{"name":"Rāhu Kāla","start":"14:12","end":"15:53","startHours":14.202012160764387,"endHours":15.891390684514313,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:45","end":"07:27","startHours":5.755119542014753,"endHours":7.444498065764679,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:08","end":"10:49","startHours":9.133876589514607,"endHours":10.823255113264533,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:22","startHours":8.908626119681283,"endHours":9.35912705934793,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:19","end":"06:41","startHours":6.318245716598062,"endHours":6.6786464683313795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.062132697347813,"endHours":12.963134576681107,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:57","end":"04:51","startHours":3.9531157833481645,"endHours":4.854117662681459,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:38","end":"05:45","startHours":4.628867192848135,"endHours":5.755119542014753,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:40","startHours":14.765138335347697,"endHours":15.666140214680992,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:04","end":"19:28","startHours":19.070147732014167,"endHours":19.470147732014166,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:16","end":"19:50","startHours":19.270147732014166,"endHours":19.833273906597476,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:01","end":"20:46","startHours":19.020147732014166,"endHours":20.770147732014166,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.062132697347813,"endHours":24.963134576681107,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:45","end":"07:27","startHours":5.755119542014753,"endHours":7.444498065764679,"quality":"auspicious"},{"name":"Roga","start":"07:27","end":"09:08","startHours":7.444498065764679,"endHours":9.133876589514607,"quality":"inauspicious"},{"name":"Udveg","start":"09:08","end":"10:49","startHours":9.133876589514607,"endHours":10.823255113264533,"quality":"inauspicious"},{"name":"Chala","start":"10:49","end":"12:31","startHours":10.823255113264533,"endHours":12.51263363701446,"quality":"neutral"},{"name":"Labha","start":"12:31","end":"14:12","startHours":12.51263363701446,"endHours":14.202012160764387,"quality":"auspicious"},{"name":"Amṛta","start":"14:12","end":"15:53","startHours":14.202012160764387,"endHours":15.891390684514313,"quality":"auspicious"},{"name":"Kāla","start":"15:53","end":"17:35","startHours":15.891390684514313,"endHours":17.58076920826424,"quality":"inauspicious"},{"name":"Śubha","start":"17:35","end":"19:16","startHours":17.58076920826424,"endHours":19.270147732014166,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:16","end":"20:35","startHours":19.270147732014166,"endHours":20.58076920826424,"quality":"auspicious"},{"name":"Kāla","start":"20:35","end":"21:53","startHours":20.58076920826424,"endHours":21.891390684514313,"quality":"inauspicious"},{"name":"Śubha","start":"21:53","end":"23:12","startHours":21.891390684514313,"endHours":23.202012160764387,"quality":"auspicious"},{"name":"Roga","start":"23:12","end":"00:31","startHours":23.202012160764387,"endHours":24.51263363701446,"quality":"inauspicious"},{"name":"Udveg","start":"00:31","end":"01:49","startHours":24.51263363701446,"endHours":25.823255113264533,"quality":"inauspicious"},{"name":"Chala","start":"01:49","end":"03:08","startHours":25.823255113264533,"endHours":27.133876589514607,"quality":"neutral"},{"name":"Labha","start":"03:08","end":"04:27","startHours":27.133876589514607,"endHours":28.44449806576468,"quality":"auspicious"},{"name":"Amṛta","start":"04:27","end":"05:45","startHours":28.44449806576468,"endHours":29.755119542014754,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.755119542014753,"endHours":6.755119542014753,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.755119542014753,"endHours":7.755119542014753,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.755119542014753,"endHours":8.755119542014754,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.755119542014754,"endHours":9.755119542014754,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.755119542014754,"endHours":10.755119542014754,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.755119542014754,"endHours":11.755119542014754,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.755119542014754,"endHours":12.755119542014754,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.755119542014754,"endHours":13.755119542014754,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.755119542014754,"endHours":14.755119542014754,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.755119542014754,"endHours":15.755119542014754,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.755119542014754,"endHours":16.755119542014754,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.755119542014754,"endHours":17.755119542014754,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.755119542014754,"endHours":18.755119542014754,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.755119542014754,"endHours":19.755119542014754,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.755119542014754,"endHours":20.755119542014754,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.755119542014754,"endHours":21.755119542014754,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.755119542014754,"endHours":22.755119542014754,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.755119542014754,"endHours":23.755119542014754,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.755119542014754,"endHours":24.755119542014754,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.755119542014754,"endHours":25.755119542014754,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.755119542014754,"endHours":26.755119542014754,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.755119542014754,"endHours":27.755119542014754,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.755119542014754,"endHours":28.755119542014754,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.755119542014754,"endHours":29.755119542014754,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-16.030407487293296,"eotMinutes":-14.200018220867548,"ayanamsa":23.8264}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Navamī · 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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","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 February 5, 1998 CE · Perth, Australia · Vidhyamitra","description":"February 5, 1998 CE for Perth, Australia: Śukla Navamī, sūryodaya 05:45, sūryāsta 19:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1998-02-05","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1998-02-05","sa":"https://sa.vidhyamitra.com/city/perth/1998-02-05","hi":"https://hi.vidhyamitra.com/city/perth/1998-02-05","x-default":"https://vidhyamitra.com/city/perth/1998-02-05"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T18:27:56.766Z","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":"2026-05-31T18:27:56.766Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T18:27:56.766Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}