{"id":"vidhyamitra:city-day:perth:2104-02-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2104-02-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2104-02-17","date_display":"February 17, 2104 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":2104,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2489576.770833,"kali_year":5205,"ahargana":1901111.2708,"sun":{"sidereal_longitude":301.9908,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":190.8314,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.8406,"elapsed_within_tithi_degrees":8.8406},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.8314,"elapsed_within_degrees":4.1647},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.8221},"karana":{"half_tithi_index":41,"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":2104,"month":2,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2489576.770833,"ahargana":1901111.2708,"kali_year":5205,"ayanamsa_lahiri":25.3076,"grahas":{"sun":{"sidereal_longitude":302.1356169999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":187.320517,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":-3.862},"mars":{"sidereal_longitude":83.94711699999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":306.31161700000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":287.46741700000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"venus":{"sidereal_longitude":278.9110169999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":226.11021699999992,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":249.9761,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":69.9761,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":2104,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2489576.770833,"kali_year":5205,"ahargana":1901111.2708,"sun":{"sidereal_longitude":301.9908,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":190.8314,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.8406,"elapsed_within_tithi_degrees":8.8406},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.8314,"elapsed_within_degrees":4.1647},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":132.8221},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.862,"elongation":111.159},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.862,"opposition_distance":68.841}},"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":"05:56","sunsetLocal":"19:07","solarNoonLocal":"12:31","dayLengthHours":13.18266759073871,"dayLengthDisplay":"13 Hours 10 Mins 58 Secs","nightLengthDisplay":"10 Hours 49 Mins 02 Secs","moonriseLocal":"22:17","moonsetLocal":"11:26","rahuKala":{"name":"Rāhu Kāla","start":"17:28","end":"19:07","startHours":17.461009819049284,"endHours":19.108843267891622,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:31","end":"14:10","startHours":12.517509472522267,"endHours":14.165342921364605,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:49","end":"17:28","startHours":15.813176370206945,"endHours":17.461009819049284,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:26","startHours":9.002131448325278,"endHours":9.441553701349902,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:29","end":"06:50","startHours":6.475453493433692,"endHours":6.826991295853391,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:57","startHours":12.078087219497643,"endHours":12.956931725546891,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:10","end":"05:03","startHours":4.1684866650544175,"endHours":5.047331171103664,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:50","end":"05:56","startHours":4.827620044591352,"endHours":5.926175677152912,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:36","startHours":14.714620737645387,"endHours":15.593465243694634,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:55","end":"19:19","startHours":18.908843267891623,"endHours":19.30884326789162,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:07","end":"19:39","startHours":19.108843267891622,"endHours":19.6581210841724,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:52","end":"20:37","startHours":18.858843267891622,"endHours":20.608843267891622,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:57","startHours":24.078087219497643,"endHours":24.95693172554689,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:56","end":"07:34","startHours":5.926175677152912,"endHours":7.574009125995251,"quality":"inauspicious"},{"name":"Chala","start":"07:34","end":"09:13","startHours":7.574009125995251,"endHours":9.22184257483759,"quality":"neutral"},{"name":"Labha","start":"09:13","end":"10:52","startHours":9.22184257483759,"endHours":10.86967602367993,"quality":"auspicious"},{"name":"Amṛta","start":"10:52","end":"12:31","startHours":10.86967602367993,"endHours":12.517509472522267,"quality":"auspicious"},{"name":"Kāla","start":"12:31","end":"14:10","startHours":12.517509472522267,"endHours":14.165342921364605,"quality":"inauspicious"},{"name":"Śubha","start":"14:10","end":"15:49","startHours":14.165342921364605,"endHours":15.813176370206945,"quality":"auspicious"},{"name":"Roga","start":"15:49","end":"17:28","startHours":15.813176370206945,"endHours":17.461009819049284,"quality":"inauspicious"},{"name":"Udveg","start":"17:28","end":"19:07","startHours":17.461009819049284,"endHours":19.108843267891622,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:07","end":"20:28","startHours":19.108843267891622,"endHours":20.461009819049284,"quality":"auspicious"},{"name":"Roga","start":"20:28","end":"21:49","startHours":20.461009819049284,"endHours":21.813176370206946,"quality":"inauspicious"},{"name":"Udveg","start":"21:49","end":"23:10","startHours":21.813176370206946,"endHours":23.165342921364605,"quality":"inauspicious"},{"name":"Chala","start":"23:10","end":"00:31","startHours":23.165342921364605,"endHours":24.517509472522267,"quality":"neutral"},{"name":"Labha","start":"00:31","end":"01:52","startHours":24.517509472522267,"endHours":25.86967602367993,"quality":"auspicious"},{"name":"Amṛta","start":"01:52","end":"03:13","startHours":25.86967602367993,"endHours":27.221842574837588,"quality":"auspicious"},{"name":"Kāla","start":"03:13","end":"04:34","startHours":27.221842574837588,"endHours":28.57400912599525,"quality":"inauspicious"},{"name":"Śubha","start":"04:34","end":"05:56","startHours":28.57400912599525,"endHours":29.926175677152912,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.926175677152912,"endHours":6.926175677152912,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.926175677152912,"endHours":7.926175677152912,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.926175677152912,"endHours":8.926175677152912,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.926175677152912,"endHours":9.926175677152912,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.926175677152912,"endHours":10.926175677152912,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.926175677152912,"endHours":11.926175677152912,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.926175677152912,"endHours":12.926175677152912,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.926175677152912,"endHours":13.926175677152912,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.926175677152912,"endHours":14.926175677152912,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.926175677152912,"endHours":15.926175677152912,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.926175677152912,"endHours":16.926175677152912,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.926175677152912,"endHours":17.926175677152912,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.926175677152912,"endHours":18.926175677152912,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.926175677152912,"endHours":19.926175677152912,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.926175677152912,"endHours":20.926175677152912,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.926175677152912,"endHours":21.926175677152912,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.926175677152912,"endHours":22.926175677152912,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.926175677152912,"endHours":23.926175677152912,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.926175677152912,"endHours":24.926175677152912,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.926175677152912,"endHours":25.926175677152912,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.926175677152912,"endHours":26.926175677152912,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.926175677152912,"endHours":27.926175677152912,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.926175677152912,"endHours":28.926175677152912,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.926175677152912,"endHours":29.926175677152912,"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.35885057169966,"eotMinutes":-14.492568351336082,"ayanamsa":25.3076}},"calendars":{"vikram_samvat":2161,"vikram_samvatsara":"Īśvara","saka_samvat":2026,"saka_samvatsara":"Raktākṣī","bengali_samvat":1511,"malayalam_era":1280,"nanakshahi_year":635,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Ṣaṣṭhī · Vikram 2161 Īśvara · Śaka 2026 Raktākṣī"},"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":[]},"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 February 17, 2104 CE · Perth, Australia · Vidhyamitra","description":"February 17, 2104 CE for Perth, Australia: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:56, sūryāsta 19:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2104-02-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2104-02-17","sa":"https://sa.vidhyamitra.com/city/perth/2104-02-17","hi":"https://hi.vidhyamitra.com/city/perth/2104-02-17","x-default":"https://vidhyamitra.com/city/perth/2104-02-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T03:45:53.907Z","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":"2026-06-02T03:45:53.907Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T03:45:53.907Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}