{"id":"vidhyamitra:city-day:perth:1887-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1887-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1887-07-13","date_display":"July 13, 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":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2410465.770833,"kali_year":4989,"ahargana":1822000.2708,"sun":{"sidereal_longitude":87.8572,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":356.7573,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":268.9001,"elapsed_within_tithi_degrees":4.9001},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":356.7573,"elapsed_within_degrees":10.0906},"yoga":{"number":7,"name":"Sukarma","sum_longitude":84.6145},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2410465.770833,"ahargana":1822000.2708,"kali_year":4989,"ayanamsa_lahiri":22.2819,"grahas":{"sun":{"sidereal_longitude":88.01283899999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":355.218739,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false,"latitude":-3.6894},"mars":{"sidereal_longitude":69.711139,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":111.369639,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":186.28563899999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":135.102239,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":93.798539,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":121.6576,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":301.6576,"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":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2410465.770833,"kali_year":4989,"ahargana":1822000.2708,"sun":{"sidereal_longitude":87.8572,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":356.7573,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":268.9001,"elapsed_within_tithi_degrees":4.9001},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":356.7573,"elapsed_within_degrees":10.0906},"yoga":{"number":7,"name":"Sukarma","sum_longitude":84.6145},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.689,"elongation":91.1},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.689,"opposition_distance":88.9}},"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":"07:16","sunsetLocal":"17:28","solarNoonLocal":"12:22","dayLengthHours":10.20908824904567,"dayLengthDisplay":"10 Hours 12 Mins 33 Secs","nightLengthDisplay":"13 Hours 47 Mins 27 Secs","moonriseLocal":"00:25","moonsetLocal":"11:56","rahuKala":{"name":"Rāhu Kāla","start":"12:22","end":"13:38","startHours":12.365323814102677,"endHours":13.641459845233385,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:32","end":"09:49","startHours":8.53691572071055,"endHours":9.81305175184126,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:05","end":"12:22","startHours":11.089187782971969,"endHours":12.365323814102677,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"09:59","startHours":9.642900281023831,"endHours":9.983203222658688,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:41","end":"07:58","startHours":7.6861583666234115,"endHours":7.958400719931296,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:42","startHours":12.025020872467822,"endHours":12.705626755737532,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:54","end":"06:35","startHours":5.8995679230404185,"endHours":6.58017380631013,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:25","end":"07:16","startHours":6.410022335492703,"endHours":7.2607796895798415,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:45","startHours":14.066838522276957,"endHours":14.747444405546668,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.269867938625513,"endHours":17.66986793862551,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:54","startHours":17.469867938625512,"endHours":17.89524661566908,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.219867938625512,"endHours":18.969867938625512,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:42","startHours":24.02502087246782,"endHours":24.705626755737534,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:16","end":"08:32","startHours":7.2607796895798415,"endHours":8.53691572071055,"quality":"auspicious"},{"name":"Amṛta","start":"08:32","end":"09:49","startHours":8.53691572071055,"endHours":9.81305175184126,"quality":"auspicious"},{"name":"Kāla","start":"09:49","end":"11:05","startHours":9.81305175184126,"endHours":11.089187782971969,"quality":"inauspicious"},{"name":"Śubha","start":"11:05","end":"12:22","startHours":11.089187782971969,"endHours":12.365323814102677,"quality":"auspicious"},{"name":"Roga","start":"12:22","end":"13:38","startHours":12.365323814102677,"endHours":13.641459845233385,"quality":"inauspicious"},{"name":"Udveg","start":"13:38","end":"14:55","startHours":13.641459845233385,"endHours":14.917595876364095,"quality":"inauspicious"},{"name":"Chala","start":"14:55","end":"16:12","startHours":14.917595876364095,"endHours":16.193731907494804,"quality":"neutral"},{"name":"Labha","start":"16:12","end":"17:28","startHours":16.193731907494804,"endHours":17.469867938625512,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:28","end":"19:12","startHours":17.469867938625512,"endHours":19.193731907494804,"quality":"inauspicious"},{"name":"Chala","start":"19:12","end":"20:55","startHours":19.193731907494804,"endHours":20.917595876364096,"quality":"neutral"},{"name":"Labha","start":"20:55","end":"22:38","startHours":20.917595876364096,"endHours":22.641459845233385,"quality":"auspicious"},{"name":"Amṛta","start":"22:38","end":"00:22","startHours":22.641459845233385,"endHours":24.365323814102677,"quality":"auspicious"},{"name":"Kāla","start":"00:22","end":"02:05","startHours":24.365323814102677,"endHours":26.08918778297197,"quality":"inauspicious"},{"name":"Śubha","start":"02:05","end":"03:49","startHours":26.08918778297197,"endHours":27.813051751841257,"quality":"auspicious"},{"name":"Roga","start":"03:49","end":"05:32","startHours":27.813051751841257,"endHours":29.53691572071055,"quality":"inauspicious"},{"name":"Udveg","start":"05:32","end":"07:16","startHours":29.53691572071055,"endHours":31.26077968957984,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:16","end":"08:16","startHours":7.2607796895798415,"endHours":8.260779689579842,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:16","end":"09:16","startHours":8.260779689579842,"endHours":9.260779689579842,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:16","end":"10:16","startHours":9.260779689579842,"endHours":10.260779689579842,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:16","end":"11:16","startHours":10.260779689579842,"endHours":11.260779689579842,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:16","end":"12:16","startHours":11.260779689579842,"endHours":12.260779689579842,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:16","end":"13:16","startHours":12.260779689579842,"endHours":13.260779689579842,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:16","end":"14:16","startHours":13.260779689579842,"endHours":14.260779689579842,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:16","end":"15:16","startHours":14.260779689579842,"endHours":15.260779689579842,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:16","end":"16:16","startHours":15.260779689579842,"endHours":16.26077968957984,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:16","end":"17:16","startHours":16.26077968957984,"endHours":17.26077968957984,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:16","end":"18:16","startHours":17.26077968957984,"endHours":18.26077968957984,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:16","end":"19:16","startHours":18.26077968957984,"endHours":19.26077968957984,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:16","end":"20:16","startHours":19.26077968957984,"endHours":20.26077968957984,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:16","end":"21:16","startHours":20.26077968957984,"endHours":21.26077968957984,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:16","end":"22:16","startHours":21.26077968957984,"endHours":22.26077968957984,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:16","end":"23:16","startHours":22.26077968957984,"endHours":23.26077968957984,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:16","end":"00:16","startHours":23.26077968957984,"endHours":24.26077968957984,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:16","end":"01:16","startHours":24.26077968957984,"endHours":25.26077968957984,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:16","end":"02:16","startHours":25.26077968957984,"endHours":26.26077968957984,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:16","end":"03:16","startHours":26.26077968957984,"endHours":27.26077968957984,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:16","end":"04:16","startHours":27.26077968957984,"endHours":28.26077968957984,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:16","end":"05:16","startHours":28.26077968957984,"endHours":29.26077968957984,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:16","end":"06:16","startHours":29.26077968957984,"endHours":30.26077968957984,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:16","end":"07:16","startHours":30.26077968957984,"endHours":31.26077968957984,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"South-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.90331985162559,"eotMinutes":-5.361428846160681,"ayanamsa":22.2819}},"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 Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Aṣṭamī · Vikram 1944 Śārvarī · Śaka 1809 Sarvajit"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","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 13, 1887 CE · Perth, Australia · Vidhyamitra","description":"July 13, 1887 CE for Perth, Australia: Kṛṣṇa Aṣṭamī, sūryodaya 07:16, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1887-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1887-07-13","sa":"https://sa.vidhyamitra.com/city/perth/1887-07-13","hi":"https://hi.vidhyamitra.com/city/perth/1887-07-13","x-default":"https://vidhyamitra.com/city/perth/1887-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:35:03.104Z","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":"2026-05-31T06:35:03.104Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:35:03.104Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}