{"id":"vidhyamitra:city-day:perth:2137-12-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2137-12-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2137-12-16","date_display":"December 16, 2137 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":2137,"month":12,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501932.770833,"kali_year":5239,"ahargana":1913467.2708,"sun":{"sidereal_longitude":237.6358,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":278.0226,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.3868,"elapsed_within_tithi_degrees":4.3868},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":278.0226,"elapsed_within_degrees":11.3559},"yoga":{"number":12,"name":"Dhruva","sum_longitude":155.6583},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2137,"month":12,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2501932.770833,"ahargana":1913467.2708,"kali_year":5239,"ayanamsa_lahiri":25.7801,"grahas":{"sun":{"sidereal_longitude":238.35792700000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":281.9600270000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false,"latitude":-2.7235},"mars":{"sidereal_longitude":136.36992700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":218.499327,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":231.45482700000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":239.70602699999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":266.157327,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":315.2957,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":135.2957,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":2137,"month":12,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501932.770833,"kali_year":5239,"ahargana":1913467.2708,"sun":{"sidereal_longitude":237.6358,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":278.0226,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.3868,"elapsed_within_tithi_degrees":4.3868},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":278.0226,"elapsed_within_degrees":11.3559},"yoga":{"number":12,"name":"Dhruva","sum_longitude":155.6583},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.723,"elongation":40.387},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.723,"opposition_distance":139.613}},"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":"05:06","sunsetLocal":"19:20","solarNoonLocal":"12:13","dayLengthHours":14.226475282252487,"dayLengthDisplay":"14 Hours 13 Mins 35 Secs","nightLengthDisplay":"9 Hours 46 Mins 25 Secs","moonriseLocal":"08:17","moonsetLocal":"21:58","rahuKala":{"name":"Rāhu Kāla","start":"06:53","end":"08:39","startHours":6.879089822035775,"endHours":8.657399232317335,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:26","end":"12:13","startHours":10.435708642598897,"endHours":12.214018052880458,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:00","end":"15:46","startHours":13.99232746316202,"endHours":15.770636873443578,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:25","end":"08:54","startHours":8.42029131094646,"endHours":8.89450715368821,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:42","end":"06:04","startHours":5.693550215181401,"endHours":6.072922889374801,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:41","startHours":11.73980221013871,"endHours":12.688233895622208,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:12","end":"04:09","startHours":3.203917040787216,"endHours":4.152348726270715,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:55","end":"05:06","startHours":3.9152408048998404,"endHours":5.100780411754214,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:32","startHours":14.585097266589205,"endHours":15.533528952072704,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.127255694006703,"endHours":19.5272556940067,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:55","startHours":19.327255694006702,"endHours":19.92002549743389,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.077255694006702,"endHours":20.827255694006702,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:41","startHours":23.73980221013871,"endHours":24.688233895622208,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:06","end":"06:53","startHours":5.100780411754214,"endHours":6.879089822035775,"quality":"auspicious"},{"name":"Kāla","start":"06:53","end":"08:39","startHours":6.879089822035775,"endHours":8.657399232317335,"quality":"inauspicious"},{"name":"Śubha","start":"08:39","end":"10:26","startHours":8.657399232317335,"endHours":10.435708642598897,"quality":"auspicious"},{"name":"Roga","start":"10:26","end":"12:13","startHours":10.435708642598897,"endHours":12.214018052880458,"quality":"inauspicious"},{"name":"Udveg","start":"12:13","end":"14:00","startHours":12.214018052880458,"endHours":13.99232746316202,"quality":"inauspicious"},{"name":"Chala","start":"14:00","end":"15:46","startHours":13.99232746316202,"endHours":15.770636873443578,"quality":"neutral"},{"name":"Labha","start":"15:46","end":"17:33","startHours":15.770636873443578,"endHours":17.54894628372514,"quality":"auspicious"},{"name":"Amṛta","start":"17:33","end":"19:20","startHours":17.54894628372514,"endHours":19.327255694006702,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:20","end":"20:33","startHours":19.327255694006702,"endHours":20.54894628372514,"quality":"neutral"},{"name":"Labha","start":"20:33","end":"21:46","startHours":20.54894628372514,"endHours":21.77063687344358,"quality":"auspicious"},{"name":"Amṛta","start":"21:46","end":"23:00","startHours":21.77063687344358,"endHours":22.99232746316202,"quality":"auspicious"},{"name":"Kāla","start":"23:00","end":"00:13","startHours":22.99232746316202,"endHours":24.21401805288046,"quality":"inauspicious"},{"name":"Śubha","start":"00:13","end":"01:26","startHours":24.21401805288046,"endHours":25.435708642598897,"quality":"auspicious"},{"name":"Roga","start":"01:26","end":"02:39","startHours":25.435708642598897,"endHours":26.65739923231734,"quality":"inauspicious"},{"name":"Udveg","start":"02:39","end":"03:53","startHours":26.65739923231734,"endHours":27.879089822035777,"quality":"inauspicious"},{"name":"Chala","start":"03:53","end":"05:06","startHours":27.879089822035777,"endHours":29.100780411754215,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:06","end":"06:06","startHours":5.100780411754214,"endHours":6.100780411754214,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:06","end":"07:06","startHours":6.100780411754214,"endHours":7.100780411754214,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:06","end":"08:06","startHours":7.100780411754214,"endHours":8.100780411754215,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:06","end":"09:06","startHours":8.100780411754215,"endHours":9.100780411754215,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:06","end":"10:06","startHours":9.100780411754215,"endHours":10.100780411754215,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:06","end":"11:06","startHours":10.100780411754215,"endHours":11.100780411754215,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:06","end":"12:06","startHours":11.100780411754215,"endHours":12.100780411754215,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:06","end":"13:06","startHours":12.100780411754215,"endHours":13.100780411754215,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:06","end":"14:06","startHours":13.100780411754215,"endHours":14.100780411754215,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:06","end":"15:06","startHours":14.100780411754215,"endHours":15.100780411754215,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:06","end":"16:06","startHours":15.100780411754215,"endHours":16.100780411754215,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:06","end":"17:06","startHours":16.100780411754215,"endHours":17.100780411754215,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:06","end":"18:06","startHours":17.100780411754215,"endHours":18.100780411754215,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:06","end":"19:06","startHours":18.100780411754215,"endHours":19.100780411754215,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:06","end":"20:06","startHours":19.100780411754215,"endHours":20.100780411754215,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:06","end":"21:06","startHours":20.100780411754215,"endHours":21.100780411754215,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:06","end":"22:06","startHours":21.100780411754215,"endHours":22.100780411754215,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:06","end":"23:06","startHours":22.100780411754215,"endHours":23.100780411754215,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:06","end":"00:06","startHours":23.100780411754215,"endHours":24.100780411754215,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:06","end":"01:06","startHours":24.100780411754215,"endHours":25.100780411754215,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:06","end":"02:06","startHours":25.100780411754215,"endHours":26.100780411754215,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:06","end":"03:06","startHours":26.100780411754215,"endHours":27.100780411754215,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:06","end":"04:06","startHours":27.100780411754215,"endHours":28.100780411754215,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:06","end":"05:06","startHours":28.100780411754215,"endHours":29.100780411754215,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.306684196302353,"eotMinutes":3.716916827172506,"ayanamsa":25.7801}},"calendars":{"vikram_samvat":2194,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":2059,"saka_samvatsara":"Hemalambī","bengali_samvat":1544,"malayalam_era":1313,"nanakshahi_year":668,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Caturthī · Vikram 2194 Sādhāraṇa · Śaka 2059 Hemalambī"},"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 December 16, 2137 CE · Perth, Australia · Vidhyamitra","description":"December 16, 2137 CE for Perth, Australia: Śukla Caturthī, sūryodaya 05:06, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2137-12-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2137-12-16","sa":"https://sa.vidhyamitra.com/city/perth/2137-12-16","hi":"https://hi.vidhyamitra.com/city/perth/2137-12-16","x-default":"https://vidhyamitra.com/city/perth/2137-12-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:07:14.029Z","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":"2026-05-31T19:07:14.029Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:07:14.029Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}