{"id":"vidhyamitra:city-day:perth:1902-05-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1902-05-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1902-05-11","date_display":"May 11, 1902 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":1902,"month":5,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415880.770833,"kali_year":5004,"ahargana":1827415.2708,"sun":{"sidereal_longitude":27.1534,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":68.1568,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.0034,"elapsed_within_tithi_degrees":5.0034},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":68.1568,"elapsed_within_degrees":1.4901},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":95.3102},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1902,"month":5,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2415880.770833,"ahargana":1827415.2708,"kali_year":5004,"ayanamsa_lahiri":22.489,"grahas":{"sun":{"sidereal_longitude":26.921446000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":70.566846,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-3.6119},"mars":{"sidereal_longitude":19.018845999999996,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":41.91504600000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":295.111946,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":342.798746,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":276.61204599999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":194.7448,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":14.7448,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"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":1902,"month":5,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2415880.770833,"kali_year":5004,"ahargana":1827415.2708,"sun":{"sidereal_longitude":27.1534,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":68.1568,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.0034,"elapsed_within_tithi_degrees":5.0034},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":68.1568,"elapsed_within_degrees":1.4901},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":95.3102},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.612,"elongation":41.003},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.612,"opposition_distance":138.997}},"eclipse_window_40days":[{"offset_days":-3,"type":"solar","occurs":true,"moon_latitude":-0.767,"elongation":0.452}]},"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":"06:54","sunsetLocal":"17:31","solarNoonLocal":"12:13","dayLengthHours":10.620282237326087,"dayLengthDisplay":"10 Hours 37 Mins 13 Secs","nightLengthDisplay":"13 Hours 22 Mins 47 Secs","moonriseLocal":"10:07","moonsetLocal":"20:08","rahuKala":{"name":"Rāhu Kāla","start":"16:12","end":"17:31","startHours":16.196706011265473,"endHours":17.524241290931233,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:32","startHours":12.21410017226819,"endHours":13.541635451933951,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:52","end":"16:12","startHours":14.869170731599713,"endHours":16.196706011265473,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:23","end":"09:44","startHours":9.382024908981233,"endHours":9.736034316892104,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:21","end":"07:38","startHours":7.346470813493734,"endHours":7.629678339822429,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.86009076435732,"endHours":12.568109580179058,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:29","end":"06:12","startHours":5.487921421961668,"endHours":6.195940237783407,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:01","end":"06:54","startHours":6.018935533827973,"endHours":6.9039590536051465,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:59","end":"14:42","startHours":13.984147211822538,"endHours":14.692166027644278,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:19","end":"17:43","startHours":17.324241290931234,"endHours":17.724241290931232,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:31","end":"17:58","startHours":17.524241290931233,"endHours":17.96675305081982,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:16","end":"19:01","startHours":17.274241290931233,"endHours":19.024241290931233,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.86009076435732,"endHours":24.56810958017906,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:54","end":"08:14","startHours":6.9039590536051465,"endHours":8.231494333270907,"quality":"inauspicious"},{"name":"Chala","start":"08:14","end":"09:34","startHours":8.231494333270907,"endHours":9.55902961293667,"quality":"neutral"},{"name":"Labha","start":"09:34","end":"10:53","startHours":9.55902961293667,"endHours":10.88656489260243,"quality":"auspicious"},{"name":"Amṛta","start":"10:53","end":"12:13","startHours":10.88656489260243,"endHours":12.21410017226819,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:32","startHours":12.21410017226819,"endHours":13.541635451933951,"quality":"inauspicious"},{"name":"Śubha","start":"13:32","end":"14:52","startHours":13.541635451933951,"endHours":14.869170731599713,"quality":"auspicious"},{"name":"Roga","start":"14:52","end":"16:12","startHours":14.869170731599713,"endHours":16.196706011265473,"quality":"inauspicious"},{"name":"Udveg","start":"16:12","end":"17:31","startHours":16.196706011265473,"endHours":17.524241290931233,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:31","end":"19:12","startHours":17.524241290931233,"endHours":19.196706011265473,"quality":"auspicious"},{"name":"Roga","start":"19:12","end":"20:52","startHours":19.196706011265473,"endHours":20.86917073159971,"quality":"inauspicious"},{"name":"Udveg","start":"20:52","end":"22:32","startHours":20.86917073159971,"endHours":22.54163545193395,"quality":"inauspicious"},{"name":"Chala","start":"22:32","end":"00:13","startHours":22.54163545193395,"endHours":24.21410017226819,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:53","startHours":24.21410017226819,"endHours":25.88656489260243,"quality":"auspicious"},{"name":"Amṛta","start":"01:53","end":"03:34","startHours":25.88656489260243,"endHours":27.55902961293667,"quality":"auspicious"},{"name":"Kāla","start":"03:34","end":"05:14","startHours":27.55902961293667,"endHours":29.231494333270906,"quality":"inauspicious"},{"name":"Śubha","start":"05:14","end":"06:54","startHours":29.231494333270906,"endHours":30.903959053605146,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:54","end":"07:54","startHours":6.9039590536051465,"endHours":7.9039590536051465,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:54","end":"08:54","startHours":7.9039590536051465,"endHours":8.903959053605146,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:54","end":"09:54","startHours":8.903959053605146,"endHours":9.903959053605146,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:54","end":"10:54","startHours":9.903959053605146,"endHours":10.903959053605146,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:54","end":"11:54","startHours":10.903959053605146,"endHours":11.903959053605146,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:54","end":"12:54","startHours":11.903959053605146,"endHours":12.903959053605146,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:54","end":"13:54","startHours":12.903959053605146,"endHours":13.903959053605146,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:54","end":"14:54","startHours":13.903959053605146,"endHours":14.903959053605146,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:54","end":"15:54","startHours":14.903959053605146,"endHours":15.903959053605146,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:54","end":"16:54","startHours":15.903959053605146,"endHours":16.903959053605146,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:54","end":"17:54","startHours":16.903959053605146,"endHours":17.903959053605146,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:54","end":"18:54","startHours":17.903959053605146,"endHours":18.903959053605146,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:54","end":"19:54","startHours":18.903959053605146,"endHours":19.903959053605146,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:54","end":"20:54","startHours":19.903959053605146,"endHours":20.903959053605146,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:54","end":"21:54","startHours":20.903959053605146,"endHours":21.903959053605146,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:54","end":"22:54","startHours":21.903959053605146,"endHours":22.903959053605146,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:54","end":"23:54","startHours":22.903959053605146,"endHours":23.903959053605146,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:54","end":"00:54","startHours":23.903959053605146,"endHours":24.903959053605146,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:54","end":"01:54","startHours":24.903959053605146,"endHours":25.903959053605146,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:54","end":"02:54","startHours":25.903959053605146,"endHours":26.903959053605146,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:54","end":"03:54","startHours":26.903959053605146,"endHours":27.903959053605146,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:54","end":"04:54","startHours":27.903959053605146,"endHours":28.903959053605146,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:54","end":"05:54","startHours":28.903959053605146,"endHours":29.903959053605146,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:54","end":"06:54","startHours":29.903959053605146,"endHours":30.903959053605146,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":17.579812754825422,"eotMinutes":3.71198966390865,"ayanamsa":22.489}},"calendars":{"vikram_samvat":1959,"vikram_samvatsara":"Rākṣasa","saka_samvat":1824,"saka_samvatsara":"Śubhakṛt","bengali_samvat":1309,"malayalam_era":1078,"nanakshahi_year":433,"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 Caturthī · Vikram 1959 Rākṣasa · Śaka 1824 Śubhakṛt"},"festivals":[{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":[]},"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 11, 1902 CE · Perth, Australia · Vidhyamitra","description":"May 11, 1902 CE for Perth, Australia: Śukla Caturthī, sūryodaya 06:54, sūryāsta 17:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1902-05-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1902-05-11","sa":"https://sa.vidhyamitra.com/city/perth/1902-05-11","hi":"https://hi.vidhyamitra.com/city/perth/1902-05-11","x-default":"https://vidhyamitra.com/city/perth/1902-05-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:44:41.103Z","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":"2026-05-31T09:44:41.103Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:44:41.103Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}