{"id":"vidhyamitra:city-day:perth:1906-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1906-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1906-10-18","date_display":"October 18, 1906 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":1906,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417501.770833,"kali_year":5008,"ahargana":1829036.2708,"sun":{"sidereal_longitude":180.7013,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":180.752,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.0507,"elapsed_within_tithi_degrees":0.0507},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.752,"elapsed_within_degrees":7.4187},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.4533},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"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":1906,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2417501.770833,"ahargana":1829036.2708,"kali_year":5008,"ayanamsa_lahiri":22.551,"grahas":{"sun":{"sidereal_longitude":181.203712,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":182.601812,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false,"latitude":4.2768},"mars":{"sidereal_longitude":151.12981200000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":197.942412,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":79.55551200000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":225.168812,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":317.6318120000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":108.8564,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.8564,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"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":1906,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2417501.770833,"kali_year":5008,"ahargana":1829036.2708,"sun":{"sidereal_longitude":180.7013,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":180.752,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.0507,"elapsed_within_tithi_degrees":0.0507},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.752,"elapsed_within_degrees":7.4187},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.4533},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.277,"elongation":0.051},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.277,"opposition_distance":179.949}},"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":"05:34","sunsetLocal":"18:28","solarNoonLocal":"12:01","dayLengthHours":12.908074543548999,"dayLengthDisplay":"12 Hours 54 Mins 29 Secs","nightLengthDisplay":"11 Hours 05 Mins 31 Secs","moonriseLocal":"05:39","moonsetLocal":"18:34","rahuKala":{"name":"Rāhu Kāla","start":"13:38","end":"15:15","startHours":13.632881681223317,"endHours":15.246390999166945,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:34","end":"07:11","startHours":5.565335091505195,"endHours":7.1788444094488195,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:48","end":"10:24","startHours":8.792353727392445,"endHours":10.40586304533607,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:00","startHours":8.577219151666627,"endHours":9.007488303118262,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:06","end":"06:27","startHours":6.103171530819736,"endHours":6.447386851981043,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.58910321182806,"endHours":12.449641514731326,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:51","end":"04:42","startHours":3.8442584856986617,"endHours":4.704796788601928,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:29","end":"05:34","startHours":4.4896622128761114,"endHours":5.565335091505195,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:02","startHours":14.17071812053786,"endHours":15.031256423441127,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:16","end":"18:40","startHours":18.273409635054193,"endHours":18.673409635054192,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:28","end":"19:01","startHours":18.473409635054193,"endHours":19.011246074368735,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:13","end":"19:58","startHours":18.223409635054193,"endHours":19.973409635054193,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.58910321182806,"endHours":24.449641514731326,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:34","end":"07:11","startHours":5.565335091505195,"endHours":7.1788444094488195,"quality":"auspicious"},{"name":"Roga","start":"07:11","end":"08:48","startHours":7.1788444094488195,"endHours":8.792353727392445,"quality":"inauspicious"},{"name":"Udveg","start":"08:48","end":"10:24","startHours":8.792353727392445,"endHours":10.40586304533607,"quality":"inauspicious"},{"name":"Chala","start":"10:24","end":"12:01","startHours":10.40586304533607,"endHours":12.019372363279693,"quality":"neutral"},{"name":"Labha","start":"12:01","end":"13:38","startHours":12.019372363279693,"endHours":13.632881681223317,"quality":"auspicious"},{"name":"Amṛta","start":"13:38","end":"15:15","startHours":13.632881681223317,"endHours":15.246390999166945,"quality":"auspicious"},{"name":"Kāla","start":"15:15","end":"16:52","startHours":15.246390999166945,"endHours":16.85990031711057,"quality":"inauspicious"},{"name":"Śubha","start":"16:52","end":"18:28","startHours":16.85990031711057,"endHours":18.473409635054193,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:28","end":"19:52","startHours":18.473409635054193,"endHours":19.85990031711057,"quality":"auspicious"},{"name":"Kāla","start":"19:52","end":"21:15","startHours":19.85990031711057,"endHours":21.24639099916694,"quality":"inauspicious"},{"name":"Śubha","start":"21:15","end":"22:38","startHours":21.24639099916694,"endHours":22.632881681223317,"quality":"auspicious"},{"name":"Roga","start":"22:38","end":"00:01","startHours":22.632881681223317,"endHours":24.019372363279693,"quality":"inauspicious"},{"name":"Udveg","start":"00:01","end":"01:24","startHours":24.019372363279693,"endHours":25.40586304533607,"quality":"inauspicious"},{"name":"Chala","start":"01:24","end":"02:48","startHours":25.40586304533607,"endHours":26.792353727392445,"quality":"neutral"},{"name":"Labha","start":"02:48","end":"04:11","startHours":26.792353727392445,"endHours":28.178844409448818,"quality":"auspicious"},{"name":"Amṛta","start":"04:11","end":"05:34","startHours":28.178844409448818,"endHours":29.565335091505194,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:34","end":"06:34","startHours":5.565335091505195,"endHours":6.565335091505195,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:34","end":"07:34","startHours":6.565335091505195,"endHours":7.565335091505195,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:34","end":"08:34","startHours":7.565335091505195,"endHours":8.565335091505194,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:34","end":"09:34","startHours":8.565335091505194,"endHours":9.565335091505194,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:34","end":"10:34","startHours":9.565335091505194,"endHours":10.565335091505194,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:34","end":"11:34","startHours":10.565335091505194,"endHours":11.565335091505194,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:34","end":"12:34","startHours":11.565335091505194,"endHours":12.565335091505194,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:34","end":"13:34","startHours":12.565335091505194,"endHours":13.565335091505194,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:34","end":"14:34","startHours":13.565335091505194,"endHours":14.565335091505194,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:34","end":"15:34","startHours":14.565335091505194,"endHours":15.565335091505194,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:34","end":"16:34","startHours":15.565335091505194,"endHours":16.565335091505194,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:34","end":"17:34","startHours":16.565335091505194,"endHours":17.565335091505194,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:34","end":"18:34","startHours":17.565335091505194,"endHours":18.565335091505194,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:34","end":"19:34","startHours":18.565335091505194,"endHours":19.565335091505194,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:34","end":"20:34","startHours":19.565335091505194,"endHours":20.565335091505194,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:34","end":"21:34","startHours":20.565335091505194,"endHours":21.565335091505194,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:34","end":"22:34","startHours":21.565335091505194,"endHours":22.565335091505194,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:34","end":"23:34","startHours":22.565335091505194,"endHours":23.565335091505194,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:34","end":"00:34","startHours":23.565335091505194,"endHours":24.565335091505194,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:34","end":"01:34","startHours":24.565335091505194,"endHours":25.565335091505194,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:34","end":"02:34","startHours":25.565335091505194,"endHours":26.565335091505194,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:34","end":"03:34","startHours":26.565335091505194,"endHours":27.565335091505194,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:34","end":"04:34","startHours":27.565335091505194,"endHours":28.565335091505194,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:34","end":"05:34","startHours":28.565335091505194,"endHours":29.565335091505194,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North","rahuVasa":"North-West","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.219397341198796,"eotMinutes":15.395658203218455,"ayanamsa":22.551}},"calendars":{"vikram_samvat":1963,"vikram_samvatsara":"Siddhārthī","saka_samvat":1828,"saka_samvatsara":"Parābhava","bengali_samvat":1313,"malayalam_era":1082,"nanakshahi_year":437,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Pratipada · Vikram 1963 Siddhārthī · Śaka 1828 Parābhava"},"festivals":[{"id":"govardhana-puja","name":"Govardhana Pūjā (Annakūṭa)","name_sanskrit":"गोवर्धन पूजा","tradition":"Vaishnava","associated_deity":"Krishna (Govardhana-dhārī)","significance":"Krishna lifted Govardhana to protect Vraja from Indra's wrath. Day 4 of Diwali.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Kārtika"},"precedence":2,"sources":["Bhāgavata 10.24-27"]}],"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 18, 1906 CE · Perth, Australia · Vidhyamitra","description":"October 18, 1906 CE for Perth, Australia: Śukla Pratipada, sūryodaya 05:34, sūryāsta 18:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1906-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1906-10-18","sa":"https://sa.vidhyamitra.com/city/perth/1906-10-18","hi":"https://hi.vidhyamitra.com/city/perth/1906-10-18","x-default":"https://vidhyamitra.com/city/perth/1906-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T02:58:15.170Z","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":"2026-06-02T02:58:15.170Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T02:58:15.170Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}