{"id":"vidhyamitra:city-day:perth:2180-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2180-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2180-05-13","date_display":"May 13, 2180 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":2180,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517421.770833,"kali_year":5282,"ahargana":1928956.2708,"sun":{"sidereal_longitude":26.2563,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":250.9841,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7279,"elapsed_within_tithi_degrees":8.7279},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":250.9841,"elapsed_within_degrees":10.9841},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.2404},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2180,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517421.770833,"ahargana":1928956.2708,"kali_year":5282,"ayanamsa_lahiri":26.3725,"grahas":{"sun":{"sidereal_longitude":26.673133000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":253.56523300000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false,"latitude":2.6667},"mars":{"sidereal_longitude":324.98373300000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":33.43783300000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":78.040933,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":352.915833,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":65.84443299999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":214.614,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":34.614,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2180,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517421.770833,"kali_year":5282,"ahargana":1928956.2708,"sun":{"sidereal_longitude":26.2563,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":250.9841,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7279,"elapsed_within_tithi_degrees":8.7279},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":250.9841,"elapsed_within_degrees":10.9841},"yoga":{"number":21,"name":"Siddha","sum_longitude":277.2404},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.667,"elongation":135.272},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.667,"opposition_distance":44.728}},"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":"06:57","sunsetLocal":"17:29","solarNoonLocal":"12:13","dayLengthHours":10.531901929896712,"dayLengthDisplay":"10 Hours 31 Mins 55 Secs","nightLengthDisplay":"13 Hours 28 Mins 05 Secs","moonriseLocal":"20:16","moonsetLocal":"10:25","rahuKala":{"name":"Rāhu Kāla","start":"09:35","end":"10:54","startHours":9.58043387179988,"endHours":10.89692161303697,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:32","end":"14:51","startHours":13.529897095511147,"endHours":14.846384836748236,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:57","end":"08:16","startHours":6.9474583893257025,"endHours":8.263946130562791,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.404902172968269,"endHours":9.755965570631492,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:23","end":"07:40","startHours":7.386287636404732,"endHours":7.667138354535311,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.862345956610836,"endHours":12.564472751937283,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:33","end":"06:15","startHours":5.543204798672807,"endHours":6.245331593999255,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:04","end":"06:57","startHours":6.069799895167643,"endHours":6.9474583893257025,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:40","startHours":13.968726342590177,"endHours":14.670853137916625,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:17","end":"17:41","startHours":17.279360319222416,"endHours":17.679360319222415,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:29","end":"17:55","startHours":17.479360319222415,"endHours":17.918189566301447,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:14","end":"18:59","startHours":17.229360319222415,"endHours":18.979360319222415,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.862345956610834,"endHours":24.564472751937284,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:57","end":"08:16","startHours":6.9474583893257025,"endHours":8.263946130562791,"quality":"inauspicious"},{"name":"Śubha","start":"08:16","end":"09:35","startHours":8.263946130562791,"endHours":9.58043387179988,"quality":"auspicious"},{"name":"Roga","start":"09:35","end":"10:54","startHours":9.58043387179988,"endHours":10.89692161303697,"quality":"inauspicious"},{"name":"Udveg","start":"10:54","end":"12:13","startHours":10.89692161303697,"endHours":12.21340935427406,"quality":"inauspicious"},{"name":"Chala","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.529897095511147,"quality":"neutral"},{"name":"Labha","start":"13:32","end":"14:51","startHours":13.529897095511147,"endHours":14.846384836748236,"quality":"auspicious"},{"name":"Amṛta","start":"14:51","end":"16:10","startHours":14.846384836748236,"endHours":16.162872577985326,"quality":"auspicious"},{"name":"Kāla","start":"16:10","end":"17:29","startHours":16.162872577985326,"endHours":17.479360319222415,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:29","end":"19:10","startHours":17.479360319222415,"endHours":19.162872577985326,"quality":"auspicious"},{"name":"Amṛta","start":"19:10","end":"20:51","startHours":19.162872577985326,"endHours":20.846384836748236,"quality":"auspicious"},{"name":"Kāla","start":"20:51","end":"22:32","startHours":20.846384836748236,"endHours":22.52989709551115,"quality":"inauspicious"},{"name":"Śubha","start":"22:32","end":"00:13","startHours":22.52989709551115,"endHours":24.21340935427406,"quality":"auspicious"},{"name":"Roga","start":"00:13","end":"01:54","startHours":24.21340935427406,"endHours":25.89692161303697,"quality":"inauspicious"},{"name":"Udveg","start":"01:54","end":"03:35","startHours":25.89692161303697,"endHours":27.580433871799883,"quality":"inauspicious"},{"name":"Chala","start":"03:35","end":"05:16","startHours":27.580433871799883,"endHours":29.263946130562793,"quality":"neutral"},{"name":"Labha","start":"05:16","end":"06:57","startHours":29.263946130562793,"endHours":30.947458389325703,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:57","end":"07:57","startHours":6.9474583893257025,"endHours":7.9474583893257025,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:57","end":"08:57","startHours":7.9474583893257025,"endHours":8.947458389325703,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:57","end":"09:57","startHours":8.947458389325703,"endHours":9.947458389325703,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:57","end":"10:57","startHours":9.947458389325703,"endHours":10.947458389325703,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:57","end":"11:57","startHours":10.947458389325703,"endHours":11.947458389325703,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:57","end":"12:57","startHours":11.947458389325703,"endHours":12.947458389325703,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:57","end":"13:57","startHours":12.947458389325703,"endHours":13.947458389325703,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:57","end":"14:57","startHours":13.947458389325703,"endHours":14.947458389325703,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:57","end":"15:57","startHours":14.947458389325703,"endHours":15.947458389325703,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:57","end":"16:57","startHours":15.947458389325703,"endHours":16.947458389325703,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:57","end":"17:57","startHours":16.947458389325703,"endHours":17.947458389325703,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:57","end":"18:57","startHours":17.947458389325703,"endHours":18.947458389325703,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:57","end":"19:57","startHours":18.947458389325703,"endHours":19.947458389325703,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:57","end":"20:57","startHours":19.947458389325703,"endHours":20.947458389325703,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:57","end":"21:57","startHours":20.947458389325703,"endHours":21.947458389325703,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:57","end":"22:57","startHours":21.947458389325703,"endHours":22.947458389325703,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:57","end":"23:57","startHours":22.947458389325703,"endHours":23.947458389325703,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:57","end":"00:57","startHours":23.947458389325703,"endHours":24.947458389325703,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:57","end":"01:57","startHours":24.947458389325703,"endHours":25.947458389325703,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:57","end":"02:57","startHours":25.947458389325703,"endHours":26.947458389325703,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:57","end":"03:57","startHours":26.947458389325703,"endHours":27.947458389325703,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:57","end":"04:57","startHours":27.947458389325703,"endHours":28.947458389325703,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:57","end":"05:57","startHours":28.947458389325703,"endHours":29.947458389325703,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:57","end":"06:57","startHours":29.947458389325703,"endHours":30.947458389325703,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.53197304348077,"eotMinutes":3.7534387435564067,"ayanamsa":26.3725}},"calendars":{"vikram_samvat":2237,"vikram_samvatsara":"Vijaya","saka_samvat":2102,"saka_samvatsara":"Vikrama","bengali_samvat":1587,"malayalam_era":1356,"nanakshahi_year":711,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","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":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Caturthī · Vikram 2237 Vijaya · Śaka 2102 Vikrama"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 May 13, 2180 CE · Perth, Australia · Vidhyamitra","description":"May 13, 2180 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 06:57, sūryāsta 17:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2180-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2180-05-13","sa":"https://sa.vidhyamitra.com/city/perth/2180-05-13","hi":"https://hi.vidhyamitra.com/city/perth/2180-05-13","x-default":"https://vidhyamitra.com/city/perth/2180-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:11:22.641Z","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":"2026-05-31T14:11:22.641Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:11:22.641Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}