{"id":"vidhyamitra:city-day:perth:2172-04-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2172-04-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2172-04-17","date_display":"April 17, 2172 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":2172,"month":4,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514473.770833,"kali_year":5273,"ahargana":1926008.2708,"sun":{"sidereal_longitude":1.1625,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":286.8345,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":285.672,"elapsed_within_tithi_degrees":9.672},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":286.8345,"elapsed_within_degrees":6.8345},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.9969},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2172,"month":4,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514473.770833,"ahargana":1926008.2708,"kali_year":5273,"ayanamsa_lahiri":26.2598,"grahas":{"sun":{"sidereal_longitude":1.4345690000000104,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":289.05086900000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false,"latitude":-4.4751},"mars":{"sidereal_longitude":175.23286899999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":350.883669,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":197.903869,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":6.226169000000027,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":327.749269,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":10.8132,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":190.8132,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","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":2172,"month":4,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514473.770833,"kali_year":5273,"ahargana":1926008.2708,"sun":{"sidereal_longitude":1.1625,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":286.8345,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":285.672,"elapsed_within_tithi_degrees":9.672},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":286.8345,"elapsed_within_degrees":6.8345},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.9969},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.475,"elongation":74.328},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.475,"opposition_distance":105.672}},"eclipse_window_40days":[{"offset_days":-8,"type":"lunar","occurs":true,"moon_latitude":1.452,"opposition_distance":0.943},{"offset_days":6,"type":"solar","occurs":true,"moon_latitude":-0.251,"elongation":0.283}]},"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":"06:39","sunsetLocal":"17:53","solarNoonLocal":"12:16","dayLengthHours":11.235765077625786,"dayLengthDisplay":"11 Hours 14 Mins 09 Secs","nightLengthDisplay":"12 Hours 45 Mins 51 Secs","moonriseLocal":"00:42","moonsetLocal":"14:12","rahuKala":{"name":"Rāhu Kāla","start":"10:52","end":"12:16","startHours":10.867095215634613,"endHours":12.271565850337836,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:05","end":"16:29","startHours":15.080507119744283,"endHours":16.484977754447506,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:03","end":"09:28","startHours":8.058153946228167,"endHours":9.46262458093139,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:17","end":"09:39","startHours":9.275361829637628,"endHours":9.649887332225154,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:07","end":"07:25","startHours":7.121840189759351,"endHours":7.421460591829372,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:39","startHours":11.89704034775031,"endHours":12.646091352925362,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:09","end":"05:54","startHours":5.155581301174839,"endHours":5.904632306349892,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:43","end":"06:39","startHours":5.717369555056128,"endHours":6.653683311524944,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:54","startHours":14.144193363275468,"endHours":14.893244368450521,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:41","end":"18:05","startHours":17.68944838915073,"endHours":18.08944838915073,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:53","end":"18:21","startHours":17.88944838915073,"endHours":18.357605267385136,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:38","end":"19:23","startHours":17.63944838915073,"endHours":19.38944838915073,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:39","startHours":23.89704034775031,"endHours":24.646091352925364,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:39","end":"08:03","startHours":6.653683311524944,"endHours":8.058153946228167,"quality":"neutral"},{"name":"Labha","start":"08:03","end":"09:28","startHours":8.058153946228167,"endHours":9.46262458093139,"quality":"auspicious"},{"name":"Amṛta","start":"09:28","end":"10:52","startHours":9.46262458093139,"endHours":10.867095215634613,"quality":"auspicious"},{"name":"Kāla","start":"10:52","end":"12:16","startHours":10.867095215634613,"endHours":12.271565850337836,"quality":"inauspicious"},{"name":"Śubha","start":"12:16","end":"13:41","startHours":12.271565850337836,"endHours":13.67603648504106,"quality":"auspicious"},{"name":"Roga","start":"13:41","end":"15:05","startHours":13.67603648504106,"endHours":15.080507119744283,"quality":"inauspicious"},{"name":"Udveg","start":"15:05","end":"16:29","startHours":15.080507119744283,"endHours":16.484977754447506,"quality":"inauspicious"},{"name":"Chala","start":"16:29","end":"17:53","startHours":16.484977754447506,"endHours":17.88944838915073,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:53","end":"19:29","startHours":17.88944838915073,"endHours":19.484977754447506,"quality":"inauspicious"},{"name":"Udveg","start":"19:29","end":"21:05","startHours":19.484977754447506,"endHours":21.080507119744283,"quality":"inauspicious"},{"name":"Chala","start":"21:05","end":"22:41","startHours":21.080507119744283,"endHours":22.67603648504106,"quality":"neutral"},{"name":"Labha","start":"22:41","end":"00:16","startHours":22.67603648504106,"endHours":24.271565850337836,"quality":"auspicious"},{"name":"Amṛta","start":"00:16","end":"01:52","startHours":24.271565850337836,"endHours":25.867095215634613,"quality":"auspicious"},{"name":"Kāla","start":"01:52","end":"03:28","startHours":25.867095215634613,"endHours":27.46262458093139,"quality":"inauspicious"},{"name":"Śubha","start":"03:28","end":"05:03","startHours":27.46262458093139,"endHours":29.058153946228167,"quality":"auspicious"},{"name":"Roga","start":"05:03","end":"06:39","startHours":29.058153946228167,"endHours":30.653683311524944,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:39","end":"07:39","startHours":6.653683311524944,"endHours":7.653683311524944,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:39","end":"08:39","startHours":7.653683311524944,"endHours":8.653683311524944,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:39","end":"09:39","startHours":8.653683311524944,"endHours":9.653683311524944,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:39","end":"10:39","startHours":9.653683311524944,"endHours":10.653683311524944,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:39","end":"11:39","startHours":10.653683311524944,"endHours":11.653683311524944,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:39","end":"12:39","startHours":11.653683311524944,"endHours":12.653683311524944,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:39","end":"13:39","startHours":12.653683311524944,"endHours":13.653683311524944,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:39","end":"14:39","startHours":13.653683311524944,"endHours":14.653683311524944,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:39","end":"15:39","startHours":14.653683311524944,"endHours":15.653683311524944,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:39","end":"16:39","startHours":15.653683311524944,"endHours":16.653683311524944,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:39","end":"17:39","startHours":16.653683311524944,"endHours":17.653683311524944,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:39","end":"18:39","startHours":17.653683311524944,"endHours":18.653683311524944,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:39","end":"19:39","startHours":18.653683311524944,"endHours":19.653683311524944,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:39","end":"20:39","startHours":19.653683311524944,"endHours":20.653683311524944,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:39","end":"21:39","startHours":20.653683311524944,"endHours":21.653683311524944,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:39","end":"22:39","startHours":21.653683311524944,"endHours":22.653683311524944,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:39","end":"23:39","startHours":22.653683311524944,"endHours":23.653683311524944,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:39","end":"00:39","startHours":23.653683311524944,"endHours":24.653683311524944,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:39","end":"01:39","startHours":24.653683311524944,"endHours":25.653683311524944,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:39","end":"02:39","startHours":25.653683311524944,"endHours":26.653683311524944,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:39","end":"03:39","startHours":26.653683311524944,"endHours":27.653683311524944,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:39","end":"04:39","startHours":27.653683311524944,"endHours":28.653683311524944,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:39","end":"05:39","startHours":28.653683311524944,"endHours":29.653683311524944,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:39","end":"06:39","startHours":29.653683311524944,"endHours":30.653683311524944,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.652279979061948,"eotMinutes":0.2640489797298191,"ayanamsa":26.2598}},"calendars":{"vikram_samvat":2229,"vikram_samvatsara":"Pārthiva","saka_samvat":2094,"saka_samvatsara":"Aṅgirasa","bengali_samvat":1579,"malayalam_era":1348,"nanakshahi_year":703,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","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 Kṛṣṇa Navamī · Vikram 2229 Pārthiva · Śaka 2094 Aṅgirasa"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 April 17, 2172 CE · Perth, Australia · Vidhyamitra","description":"April 17, 2172 CE for Perth, Australia: Kṛṣṇa Navamī, sūryodaya 06:39, sūryāsta 17:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2172-04-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2172-04-17","sa":"https://sa.vidhyamitra.com/city/perth/2172-04-17","hi":"https://hi.vidhyamitra.com/city/perth/2172-04-17","x-default":"https://vidhyamitra.com/city/perth/2172-04-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:04:34.419Z","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":"2026-06-01T15:04:34.419Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:04:34.419Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}