{"id":"vidhyamitra:city-day:perth:2156-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2156-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2156-05-13","date_display":"May 13, 2156 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":2156,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508655.770833,"kali_year":5258,"ahargana":1920190.2708,"sun":{"sidereal_longitude":26.4581,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":303.2717,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":276.8136,"elapsed_within_tithi_degrees":0.8136},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":303.2717,"elapsed_within_degrees":9.9384},"yoga":{"number":25,"name":"Brahma","sum_longitude":329.7298},"karana":{"half_tithi_index":46,"name":"Taitila"},"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":2156,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508655.770833,"ahargana":1920190.2708,"kali_year":5258,"ayanamsa_lahiri":26.0373,"grahas":{"sun":{"sidereal_longitude":26.819458999999995,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":303.330159,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false,"latitude":-1.2246},"mars":{"sidereal_longitude":26.33925899999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":0.1690590000000043,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":70.592759,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":0.5044589999999971,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":136.29465900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":319.0788,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":139.0788,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"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":2156,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508655.770833,"kali_year":5258,"ahargana":1920190.2708,"sun":{"sidereal_longitude":26.4581,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":303.2717,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":276.8136,"elapsed_within_tithi_degrees":0.8136},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3,"moon_longitude":303.2717,"elapsed_within_degrees":9.9384},"yoga":{"number":25,"name":"Brahma","sum_longitude":329.7298},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.225,"elongation":83.186},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.225,"opposition_distance":96.814}},"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":10.536358921610434,"dayLengthDisplay":"10 Hours 32 Mins 11 Secs","nightLengthDisplay":"13 Hours 27 Mins 49 Secs","moonriseLocal":"00:06","moonsetLocal":"13:11","rahuKala":{"name":"Rāhu Kāla","start":"13:32","end":"14:51","startHours":13.530454219475365,"endHours":14.847499084676668,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:57","end":"08:16","startHours":6.945229893468843,"endHours":8.262274758670147,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:35","end":"10:54","startHours":9.579319623871452,"endHours":10.896364489072756,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:24","end":"09:45","startHours":9.403713641844611,"endHours":9.754925605898293,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:23","end":"07:40","startHours":7.384244848535944,"endHours":7.66521441977889,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.862197390220379,"endHours":12.56462131832774,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:15","startHours":5.540382037254119,"endHours":6.242805965361481,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:04","end":"06:57","startHours":6.067199983334641,"endHours":6.945229893468843,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:40","startHours":13.969469174542466,"endHours":14.671893102649829,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:17","end":"17:41","startHours":17.281588815079278,"endHours":17.681588815079277,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:29","end":"17:55","startHours":17.481588815079277,"endHours":17.92060377014638,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:14","end":"18:59","startHours":17.231588815079277,"endHours":18.981588815079277,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.862197390220377,"endHours":24.56462131832774,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:57","end":"08:16","startHours":6.945229893468843,"endHours":8.262274758670147,"quality":"auspicious"},{"name":"Roga","start":"08:16","end":"09:35","startHours":8.262274758670147,"endHours":9.579319623871452,"quality":"inauspicious"},{"name":"Udveg","start":"09:35","end":"10:54","startHours":9.579319623871452,"endHours":10.896364489072756,"quality":"inauspicious"},{"name":"Chala","start":"10:54","end":"12:13","startHours":10.896364489072756,"endHours":12.21340935427406,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:32","startHours":12.21340935427406,"endHours":13.530454219475365,"quality":"auspicious"},{"name":"Amṛta","start":"13:32","end":"14:51","startHours":13.530454219475365,"endHours":14.847499084676668,"quality":"auspicious"},{"name":"Kāla","start":"14:51","end":"16:10","startHours":14.847499084676668,"endHours":16.164543949877974,"quality":"inauspicious"},{"name":"Śubha","start":"16:10","end":"17:29","startHours":16.164543949877974,"endHours":17.481588815079277,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:29","end":"19:10","startHours":17.481588815079277,"endHours":19.164543949877974,"quality":"auspicious"},{"name":"Kāla","start":"19:10","end":"20:51","startHours":19.164543949877974,"endHours":20.84749908467667,"quality":"inauspicious"},{"name":"Śubha","start":"20:51","end":"22:32","startHours":20.84749908467667,"endHours":22.530454219475367,"quality":"auspicious"},{"name":"Roga","start":"22:32","end":"00:13","startHours":22.530454219475367,"endHours":24.21340935427406,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:54","startHours":24.21340935427406,"endHours":25.896364489072756,"quality":"inauspicious"},{"name":"Chala","start":"01:54","end":"03:35","startHours":25.896364489072756,"endHours":27.579319623871452,"quality":"neutral"},{"name":"Labha","start":"03:35","end":"05:16","startHours":27.579319623871452,"endHours":29.262274758670145,"quality":"auspicious"},{"name":"Amṛta","start":"05:16","end":"06:57","startHours":29.262274758670145,"endHours":30.94522989346884,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:57","end":"07:57","startHours":6.945229893468843,"endHours":7.945229893468843,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:57","end":"08:57","startHours":7.945229893468843,"endHours":8.945229893468843,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:57","end":"09:57","startHours":8.945229893468843,"endHours":9.945229893468843,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:57","end":"10:57","startHours":9.945229893468843,"endHours":10.945229893468843,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:57","end":"11:57","startHours":10.945229893468843,"endHours":11.945229893468843,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:57","end":"12:57","startHours":11.945229893468843,"endHours":12.945229893468843,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:57","end":"13:57","startHours":12.945229893468843,"endHours":13.945229893468843,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:57","end":"14:57","startHours":13.945229893468843,"endHours":14.945229893468843,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:57","end":"15:57","startHours":14.945229893468843,"endHours":15.945229893468843,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:57","end":"16:57","startHours":15.945229893468843,"endHours":16.94522989346884,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:57","end":"17:57","startHours":16.94522989346884,"endHours":17.94522989346884,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:57","end":"18:57","startHours":17.94522989346884,"endHours":18.94522989346884,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:57","end":"19:57","startHours":18.94522989346884,"endHours":19.94522989346884,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:57","end":"20:57","startHours":19.94522989346884,"endHours":20.94522989346884,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:57","end":"21:57","startHours":20.94522989346884,"endHours":21.94522989346884,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:57","end":"22:57","startHours":21.94522989346884,"endHours":22.94522989346884,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:57","end":"23:57","startHours":22.94522989346884,"endHours":23.94522989346884,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:57","end":"00:57","startHours":23.94522989346884,"endHours":24.94522989346884,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:57","end":"01:57","startHours":24.94522989346884,"endHours":25.94522989346884,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:57","end":"02:57","startHours":25.94522989346884,"endHours":26.94522989346884,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:57","end":"03:57","startHours":26.94522989346884,"endHours":27.94522989346884,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:57","end":"04:57","startHours":27.94522989346884,"endHours":28.94522989346884,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:57","end":"05:57","startHours":28.94522989346884,"endHours":29.94522989346884,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:57","end":"06:57","startHours":29.94522989346884,"endHours":30.94522989346884,"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","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Chatra","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":18.48424424312757,"eotMinutes":3.7534387435564067,"ayanamsa":26.0373}},"calendars":{"vikram_samvat":2213,"vikram_samvatsara":"Śukla","saka_samvat":2078,"saka_samvatsara":"Nala","bengali_samvat":1563,"malayalam_era":1332,"nanakshahi_year":687,"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 Navamī · Vikram 2213 Śukla · Śaka 2078 Nala"},"festivals":[],"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 May 13, 2156 CE · Perth, Australia · Vidhyamitra","description":"May 13, 2156 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 06:57, sūryāsta 17:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2156-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2156-05-13","sa":"https://sa.vidhyamitra.com/city/perth/2156-05-13","hi":"https://hi.vidhyamitra.com/city/perth/2156-05-13","x-default":"https://vidhyamitra.com/city/perth/2156-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:52:37.983Z","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":"2026-05-31T14:52:37.983Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:52:37.983Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}