{"id":"vidhyamitra:city-day:perth:2101-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2101-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2101-05-15","date_display":"May 15, 2101 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":2101,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488568.770833,"kali_year":5203,"ahargana":1900103.2708,"sun":{"sidereal_longitude":28.6,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":229.6019,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":201.0019,"elapsed_within_tithi_degrees":9.0019},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":229.6019,"elapsed_within_degrees":2.9353},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.2019},"karana":{"half_tithi_index":33,"name":"Gara"},"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":2101,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488568.770833,"ahargana":1900103.2708,"kali_year":5203,"ayanamsa_lahiri":25.269,"grahas":{"sun":{"sidereal_longitude":28.845129999999983,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":231.94462999999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":-4.3206},"mars":{"sidereal_longitude":326.91392999999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":36.40463,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":201.58423000000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":46.08433000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":187.40493000000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":303.3848,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":123.3848,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":2101,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488568.770833,"kali_year":5203,"ahargana":1900103.2708,"sun":{"sidereal_longitude":28.6,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":229.6019,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":201.0019,"elapsed_within_tithi_degrees":9.0019},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":229.6019,"elapsed_within_degrees":2.9353},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.2019},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.321,"elongation":158.998},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.321,"opposition_distance":21.002}},"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":"06:58","sunsetLocal":"17:28","solarNoonLocal":"12:13","dayLengthHours":10.506979776481465,"dayLengthDisplay":"10 Hours 30 Mins 25 Secs","nightLengthDisplay":"13 Hours 29 Mins 35 Secs","moonriseLocal":"18:41","moonsetLocal":"08:49","rahuKala":{"name":"Rāhu Kāla","start":"16:09","end":"17:28","startHours":16.153480733915114,"endHours":17.466853205975298,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:32","startHours":12.213363317734565,"endHours":13.526735789794749,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:50","end":"16:09","startHours":14.840108261854933,"endHours":16.153480733915114,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:46","startHours":9.411502044006175,"endHours":9.761734703222224,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:24","end":"07:41","startHours":7.397664253513894,"endHours":7.677850380886733,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:34","startHours":11.863130658518516,"endHours":12.563595976950614,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:34","end":"06:16","startHours":5.558942792629638,"endHours":6.2594081110617354,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"06:58","startHours":6.084291781453711,"endHours":6.959873429493833,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:40","startHours":13.964526613814812,"endHours":14.66499193224691,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.2668532059753,"endHours":17.666853205975297,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:54","startHours":17.466853205975298,"endHours":17.90464402999536,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.216853205975298,"endHours":18.966853205975298,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:34","startHours":23.863130658518518,"endHours":24.563595976950612,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:58","end":"08:16","startHours":6.959873429493833,"endHours":8.273245901554017,"quality":"inauspicious"},{"name":"Chala","start":"08:16","end":"09:35","startHours":8.273245901554017,"endHours":9.5866183736142,"quality":"neutral"},{"name":"Labha","start":"09:35","end":"10:54","startHours":9.5866183736142,"endHours":10.899990845674383,"quality":"auspicious"},{"name":"Amṛta","start":"10:54","end":"12:13","startHours":10.899990845674383,"endHours":12.213363317734565,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:32","startHours":12.213363317734565,"endHours":13.526735789794749,"quality":"inauspicious"},{"name":"Śubha","start":"13:32","end":"14:50","startHours":13.526735789794749,"endHours":14.840108261854933,"quality":"auspicious"},{"name":"Roga","start":"14:50","end":"16:09","startHours":14.840108261854933,"endHours":16.153480733915114,"quality":"inauspicious"},{"name":"Udveg","start":"16:09","end":"17:28","startHours":16.153480733915114,"endHours":17.466853205975298,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:28","end":"19:09","startHours":17.466853205975298,"endHours":19.153480733915114,"quality":"auspicious"},{"name":"Roga","start":"19:09","end":"20:50","startHours":19.153480733915114,"endHours":20.84010826185493,"quality":"inauspicious"},{"name":"Udveg","start":"20:50","end":"22:32","startHours":20.84010826185493,"endHours":22.52673578979475,"quality":"inauspicious"},{"name":"Chala","start":"22:32","end":"00:13","startHours":22.52673578979475,"endHours":24.213363317734565,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:54","startHours":24.213363317734565,"endHours":25.89999084567438,"quality":"auspicious"},{"name":"Amṛta","start":"01:54","end":"03:35","startHours":25.89999084567438,"endHours":27.5866183736142,"quality":"auspicious"},{"name":"Kāla","start":"03:35","end":"05:16","startHours":27.5866183736142,"endHours":29.273245901554017,"quality":"inauspicious"},{"name":"Śubha","start":"05:16","end":"06:58","startHours":29.273245901554017,"endHours":30.959873429493832,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:58","end":"07:58","startHours":6.959873429493833,"endHours":7.959873429493833,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:58","end":"08:58","startHours":7.959873429493833,"endHours":8.959873429493832,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:58","end":"09:58","startHours":8.959873429493832,"endHours":9.959873429493832,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:58","end":"10:58","startHours":9.959873429493832,"endHours":10.959873429493832,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:58","end":"11:58","startHours":10.959873429493832,"endHours":11.959873429493832,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:58","end":"12:58","startHours":11.959873429493832,"endHours":12.959873429493832,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:58","end":"13:58","startHours":12.959873429493832,"endHours":13.959873429493832,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:58","end":"14:58","startHours":13.959873429493832,"endHours":14.959873429493832,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:58","end":"15:58","startHours":14.959873429493832,"endHours":15.959873429493832,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:58","end":"16:58","startHours":15.959873429493832,"endHours":16.959873429493832,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:58","end":"17:58","startHours":16.959873429493832,"endHours":17.959873429493832,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:58","end":"18:58","startHours":17.959873429493832,"endHours":18.959873429493832,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:58","end":"19:58","startHours":18.959873429493832,"endHours":19.959873429493832,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:58","end":"20:58","startHours":19.959873429493832,"endHours":20.959873429493832,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:58","end":"21:58","startHours":20.959873429493832,"endHours":21.959873429493832,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:58","end":"22:58","startHours":21.959873429493832,"endHours":22.959873429493832,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:58","end":"23:58","startHours":22.959873429493832,"endHours":23.959873429493832,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:58","end":"00:58","startHours":23.959873429493832,"endHours":24.959873429493832,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:58","end":"01:58","startHours":24.959873429493832,"endHours":25.959873429493832,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:58","end":"02:58","startHours":25.959873429493832,"endHours":26.959873429493832,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:58","end":"03:58","startHours":26.959873429493832,"endHours":27.959873429493832,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:58","end":"04:58","startHours":27.959873429493832,"endHours":28.959873429493832,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:58","end":"05:58","startHours":28.959873429493832,"endHours":29.959873429493832,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:58","end":"06:58","startHours":29.959873429493832,"endHours":30.959873429493832,"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":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.798285077908584,"eotMinutes":3.7562009359260493,"ayanamsa":25.269}},"calendars":{"vikram_samvat":2158,"vikram_samvatsara":"Bhāva","saka_samvat":2023,"saka_samvatsara":"Durmati","bengali_samvat":1508,"malayalam_era":1277,"nanakshahi_year":632,"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 Dvitīyā · Vikram 2158 Bhāva · Śaka 2023 Durmati"},"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 May 15, 2101 CE · Perth, Australia · Vidhyamitra","description":"May 15, 2101 CE for Perth, Australia: Kṛṣṇa Dvitīyā, sūryodaya 06:58, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2101-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2101-05-15","sa":"https://sa.vidhyamitra.com/city/perth/2101-05-15","hi":"https://hi.vidhyamitra.com/city/perth/2101-05-15","x-default":"https://vidhyamitra.com/city/perth/2101-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:32:37.462Z","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":"2026-06-02T20:32:37.462Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:32:37.462Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}