{"id":"vidhyamitra:city-day:perth:1887-07-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1887-07-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1887-07-31","date_display":"July 31, 1887 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":1887,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2410483.770833,"kali_year":4989,"ahargana":1822018.2708,"sun":{"sidereal_longitude":104.9342,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":238.7815,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":133.8473,"elapsed_within_tithi_degrees":1.8473},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.7815,"elapsed_within_degrees":12.1148},"yoga":{"number":26,"name":"Indra","sum_longitude":343.7157},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1887,"month":7,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2410483.770833,"ahargana":1822018.2708,"kali_year":4989,"ayanamsa_lahiri":22.2826,"grahas":{"sun":{"sidereal_longitude":105.20235100000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"moon":{"sidereal_longitude":239.36385099999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false,"latitude":3.9695},"mars":{"sidereal_longitude":81.72245099999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":103.64225099999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":187.77195099999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":150.96845099999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":96.12645099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":120.7038,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":300.7038,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1887,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2410483.770833,"kali_year":4989,"ahargana":1822018.2708,"sun":{"sidereal_longitude":104.9342,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":238.7815,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":133.8473,"elapsed_within_tithi_degrees":1.8473},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.7815,"elapsed_within_degrees":12.1148},"yoga":{"number":26,"name":"Indra","sum_longitude":343.7157},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.969,"elongation":133.847},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.969,"opposition_distance":46.153}},"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":"07:06","sunsetLocal":"17:39","solarNoonLocal":"12:23","dayLengthHours":10.544461272443199,"dayLengthDisplay":"10 Hours 32 Mins 40 Secs","nightLengthDisplay":"13 Hours 27 Mins 20 Secs","moonriseLocal":"14:14","moonsetLocal":"04:24","rahuKala":{"name":"Rāhu Kāla","start":"16:20","end":"17:39","startHours":16.331329219038714,"endHours":17.649386878094113,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:23","end":"13:42","startHours":12.377156241872513,"endHours":13.695213900927914,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:01","end":"16:20","startHours":15.013271559983313,"endHours":16.331329219038714,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:34","end":"09:55","startHours":9.565299902554326,"endHours":9.9167819449691,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:50","startHours":7.544278158669381,"endHours":7.8254637926012,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:44","startHours":12.02567419945774,"endHours":12.728638284287285,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:42","end":"06:24","startHours":5.698997435991821,"endHours":6.401961520821367,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:14","end":"07:06","startHours":6.226220499613981,"endHours":7.104925605650914,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:08","end":"14:50","startHours":14.13456645394638,"endHours":14.837530538775926,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:27","end":"17:51","startHours":17.449386878094113,"endHours":17.849386878094112,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:39","end":"18:05","startHours":17.649386878094113,"endHours":18.08873943111258,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:24","end":"19:09","startHours":17.399386878094113,"endHours":19.149386878094113,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:44","startHours":24.02567419945774,"endHours":24.728638284287285,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:06","end":"08:25","startHours":7.104925605650914,"endHours":8.422983264706314,"quality":"inauspicious"},{"name":"Chala","start":"08:25","end":"09:44","startHours":8.422983264706314,"endHours":9.741040923761714,"quality":"neutral"},{"name":"Labha","start":"09:44","end":"11:04","startHours":9.741040923761714,"endHours":11.059098582817114,"quality":"auspicious"},{"name":"Amṛta","start":"11:04","end":"12:23","startHours":11.059098582817114,"endHours":12.377156241872513,"quality":"auspicious"},{"name":"Kāla","start":"12:23","end":"13:42","startHours":12.377156241872513,"endHours":13.695213900927914,"quality":"inauspicious"},{"name":"Śubha","start":"13:42","end":"15:01","startHours":13.695213900927914,"endHours":15.013271559983313,"quality":"auspicious"},{"name":"Roga","start":"15:01","end":"16:20","startHours":15.013271559983313,"endHours":16.331329219038714,"quality":"inauspicious"},{"name":"Udveg","start":"16:20","end":"17:39","startHours":16.331329219038714,"endHours":17.649386878094113,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:39","end":"19:20","startHours":17.649386878094113,"endHours":19.331329219038714,"quality":"auspicious"},{"name":"Roga","start":"19:20","end":"21:01","startHours":19.331329219038714,"endHours":21.013271559983313,"quality":"inauspicious"},{"name":"Udveg","start":"21:01","end":"22:42","startHours":21.013271559983313,"endHours":22.695213900927914,"quality":"inauspicious"},{"name":"Chala","start":"22:42","end":"00:23","startHours":22.695213900927914,"endHours":24.377156241872513,"quality":"neutral"},{"name":"Labha","start":"00:23","end":"02:04","startHours":24.377156241872513,"endHours":26.059098582817114,"quality":"auspicious"},{"name":"Amṛta","start":"02:04","end":"03:44","startHours":26.059098582817114,"endHours":27.741040923761716,"quality":"auspicious"},{"name":"Kāla","start":"03:44","end":"05:25","startHours":27.741040923761716,"endHours":29.422983264706314,"quality":"inauspicious"},{"name":"Śubha","start":"05:25","end":"07:06","startHours":29.422983264706314,"endHours":31.104925605650912,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.104925605650914,"endHours":8.104925605650914,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.104925605650914,"endHours":9.104925605650914,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.104925605650914,"endHours":10.104925605650914,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.104925605650914,"endHours":11.104925605650914,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.104925605650914,"endHours":12.104925605650914,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.104925605650914,"endHours":13.104925605650914,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.104925605650914,"endHours":14.104925605650914,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.104925605650914,"endHours":15.104925605650914,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.104925605650914,"endHours":16.104925605650912,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.104925605650912,"endHours":17.104925605650912,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.104925605650912,"endHours":18.104925605650912,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.104925605650912,"endHours":19.104925605650912,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.104925605650912,"endHours":20.104925605650912,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.104925605650912,"endHours":21.104925605650912,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.104925605650912,"endHours":22.104925605650912,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.104925605650912,"endHours":23.104925605650912,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.104925605650912,"endHours":24.104925605650912,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.104925605650912,"endHours":25.104925605650912,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.104925605650912,"endHours":26.104925605650912,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.104925605650912,"endHours":27.104925605650912,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.104925605650912,"endHours":28.104925605650912,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.104925605650912,"endHours":29.104925605650912,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.104925605650912,"endHours":30.104925605650912,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.104925605650912,"endHours":31.104925605650912,"planetary_lord":"Jupiter"}],"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","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.397398958959318,"eotMinutes":-6.071374512350812,"ayanamsa":22.2826}},"calendars":{"vikram_samvat":1944,"vikram_samvatsara":"Śārvarī","saka_samvat":1809,"saka_samvatsara":"Sarvajit","bengali_samvat":1294,"malayalam_era":1063,"nanakshahi_year":418,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Dvādaśī · Vikram 1944 Śārvarī · Śaka 1809 Sarvajit"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","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 July 31, 1887 CE · Perth, Australia · Vidhyamitra","description":"July 31, 1887 CE for Perth, Australia: Śukla Dvādaśī, sūryodaya 07:06, sūryāsta 17:39.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1887-07-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1887-07-31","sa":"https://sa.vidhyamitra.com/city/perth/1887-07-31","hi":"https://hi.vidhyamitra.com/city/perth/1887-07-31","x-default":"https://vidhyamitra.com/city/perth/1887-07-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T20:12:10.398Z","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":"2026-05-31T20:12:10.398Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T20:12:10.398Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}