{"id":"vidhyamitra:city-day:perth:2140-04-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2140-04-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2140-04-18","date_display":"April 18, 2140 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":2140,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502786.770833,"kali_year":5242,"ahargana":1914321.2708,"sun":{"sidereal_longitude":2.4111,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":10.9546,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.5436,"elapsed_within_tithi_degrees":8.5436},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.9546,"elapsed_within_degrees":10.9546},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.3657},"karana":{"half_tithi_index":1,"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":2140,"month":4,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2502786.770833,"ahargana":1914321.2708,"kali_year":5242,"ayanamsa_lahiri":25.8128,"grahas":{"sun":{"sidereal_longitude":2.6130979999999795,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":12.369897999999978,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":4.4185},"mars":{"sidereal_longitude":163.82959800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":9.472497999999973,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":311.238598,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":20.04719799999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":300.23659799999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":270.0467,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":90.0467,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","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":2140,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502786.770833,"kali_year":5242,"ahargana":1914321.2708,"sun":{"sidereal_longitude":2.4111,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":10.9546,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.5436,"elapsed_within_tithi_degrees":8.5436},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.9546,"elapsed_within_degrees":10.9546},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.3657},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.419,"elongation":8.544},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.419,"opposition_distance":171.456}},"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":"06:40","sunsetLocal":"17:52","solarNoonLocal":"12:16","dayLengthHours":11.213242393211782,"dayLengthDisplay":"11 Hours 12 Mins 48 Secs","nightLengthDisplay":"12 Hours 47 Mins 12 Secs","moonriseLocal":"07:29","moonsetLocal":"18:22","rahuKala":{"name":"Rāhu Kāla","start":"08:04","end":"09:28","startHours":8.062569387614191,"endHours":9.464224686765665,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:52","end":"12:16","startHours":10.865879985917136,"endHours":12.267535285068611,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:40","end":"15:04","startHours":13.669190584220082,"endHours":15.070845883371554,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:17","end":"09:39","startHours":9.277337313545468,"endHours":9.651112059985861,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:26","startHours":7.12813252151321,"endHours":7.427152318665525,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:38","startHours":11.893760538628216,"endHours":12.641310031509002,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:55","startHours":5.165815102701147,"endHours":5.913364595581934,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:44","end":"06:40","startHours":5.726477222361737,"endHours":6.660914088462719,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:08","end":"14:53","startHours":14.136409017270573,"endHours":14.88395851015136,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:40","end":"18:04","startHours":17.6741564816745,"endHours":18.0741564816745,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:52","end":"18:20","startHours":17.8741564816745,"endHours":18.34137491472499,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:37","end":"19:22","startHours":17.6241564816745,"endHours":19.3741564816745,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:38","startHours":23.893760538628218,"endHours":24.641310031509004,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:40","end":"08:04","startHours":6.660914088462719,"endHours":8.062569387614191,"quality":"auspicious"},{"name":"Kāla","start":"08:04","end":"09:28","startHours":8.062569387614191,"endHours":9.464224686765665,"quality":"inauspicious"},{"name":"Śubha","start":"09:28","end":"10:52","startHours":9.464224686765665,"endHours":10.865879985917136,"quality":"auspicious"},{"name":"Roga","start":"10:52","end":"12:16","startHours":10.865879985917136,"endHours":12.267535285068611,"quality":"inauspicious"},{"name":"Udveg","start":"12:16","end":"13:40","startHours":12.267535285068611,"endHours":13.669190584220082,"quality":"inauspicious"},{"name":"Chala","start":"13:40","end":"15:04","startHours":13.669190584220082,"endHours":15.070845883371554,"quality":"neutral"},{"name":"Labha","start":"15:04","end":"16:28","startHours":15.070845883371554,"endHours":16.47250118252303,"quality":"auspicious"},{"name":"Amṛta","start":"16:28","end":"17:52","startHours":16.47250118252303,"endHours":17.8741564816745,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:52","end":"19:28","startHours":17.8741564816745,"endHours":19.47250118252303,"quality":"neutral"},{"name":"Labha","start":"19:28","end":"21:04","startHours":19.47250118252303,"endHours":21.070845883371554,"quality":"auspicious"},{"name":"Amṛta","start":"21:04","end":"22:40","startHours":21.070845883371554,"endHours":22.669190584220082,"quality":"auspicious"},{"name":"Kāla","start":"22:40","end":"00:16","startHours":22.669190584220082,"endHours":24.26753528506861,"quality":"inauspicious"},{"name":"Śubha","start":"00:16","end":"01:52","startHours":24.26753528506861,"endHours":25.865879985917136,"quality":"auspicious"},{"name":"Roga","start":"01:52","end":"03:28","startHours":25.865879985917136,"endHours":27.464224686765665,"quality":"inauspicious"},{"name":"Udveg","start":"03:28","end":"05:04","startHours":27.464224686765665,"endHours":29.06256938761419,"quality":"inauspicious"},{"name":"Chala","start":"05:04","end":"06:40","startHours":29.06256938761419,"endHours":30.660914088462718,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:40","end":"07:40","startHours":6.660914088462719,"endHours":7.660914088462719,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:40","end":"08:40","startHours":7.660914088462719,"endHours":8.660914088462718,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:40","end":"09:40","startHours":8.660914088462718,"endHours":9.660914088462718,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:40","end":"10:40","startHours":9.660914088462718,"endHours":10.660914088462718,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:40","end":"11:40","startHours":10.660914088462718,"endHours":11.660914088462718,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:40","end":"12:40","startHours":11.660914088462718,"endHours":12.660914088462718,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:40","end":"13:40","startHours":12.660914088462718,"endHours":13.660914088462718,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:40","end":"14:40","startHours":13.660914088462718,"endHours":14.660914088462718,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:40","end":"15:40","startHours":14.660914088462718,"endHours":15.660914088462718,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:40","end":"16:40","startHours":15.660914088462718,"endHours":16.660914088462718,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:40","end":"17:40","startHours":16.660914088462718,"endHours":17.660914088462718,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:40","end":"18:40","startHours":17.660914088462718,"endHours":18.660914088462718,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:40","end":"19:40","startHours":18.660914088462718,"endHours":19.660914088462718,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:40","end":"20:40","startHours":19.660914088462718,"endHours":20.660914088462718,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:40","end":"21:40","startHours":20.660914088462718,"endHours":21.660914088462718,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:40","end":"22:40","startHours":21.660914088462718,"endHours":22.660914088462718,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:40","end":"23:40","startHours":22.660914088462718,"endHours":23.660914088462718,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:40","end":"00:40","startHours":23.660914088462718,"endHours":24.660914088462718,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:40","end":"01:40","startHours":24.660914088462718,"endHours":25.660914088462718,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:40","end":"02:40","startHours":25.660914088462718,"endHours":26.660914088462718,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:40","end":"03:40","startHours":26.660914088462718,"endHours":27.660914088462718,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:40","end":"04:40","startHours":27.660914088462718,"endHours":28.660914088462718,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:40","end":"05:40","startHours":28.660914088462718,"endHours":29.660914088462718,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:40","end":"06:40","startHours":29.660914088462718,"endHours":30.660914088462718,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.913646017201408,"eotMinutes":0.5058828958834352,"ayanamsa":25.8128}},"calendars":{"vikram_samvat":2197,"vikram_samvatsara":"Pramādī","saka_samvat":2062,"saka_samvatsara":"Śārvarī","bengali_samvat":1547,"malayalam_era":1316,"nanakshahi_year":671,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Pratipada · Vikram 2197 Pramādī · Śaka 2062 Śārvarī"},"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":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 April 18, 2140 CE · Perth, Australia · Vidhyamitra","description":"April 18, 2140 CE for Perth, Australia: Śukla Pratipada, sūryodaya 06:40, sūryāsta 17:52.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2140-04-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2140-04-18","sa":"https://sa.vidhyamitra.com/city/perth/2140-04-18","hi":"https://hi.vidhyamitra.com/city/perth/2140-04-18","x-default":"https://vidhyamitra.com/city/perth/2140-04-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T10:06:06.481Z","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":"2026-06-01T10:06:06.481Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T10:06:06.481Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}