{"id":"vidhyamitra:city-day:perth:2138-12-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2138-12-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2138-12-31","date_display":"December 31, 2138 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":2138,"month":12,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502312.770833,"kali_year":5240,"ahargana":1913847.2708,"sun":{"sidereal_longitude":252.776,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":239.1552,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":346.3792,"elapsed_within_tithi_degrees":10.3792},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":239.1552,"elapsed_within_degrees":12.4886},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.9313},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2138,"month":12,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2502312.770833,"ahargana":1913847.2708,"kali_year":5240,"ayanamsa_lahiri":25.7947,"grahas":{"sun":{"sidereal_longitude":253.36800799999992,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":240.89340800000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":-3.7297},"mars":{"sidereal_longitude":274.111708,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":252.22290799999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":259.935508,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":206.80030799999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":278.0075079999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":295.1615,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":115.1615,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"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":2138,"month":12,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2502312.770833,"kali_year":5240,"ahargana":1913847.2708,"sun":{"sidereal_longitude":252.776,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":239.1552,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":346.3792,"elapsed_within_tithi_degrees":10.3792},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":239.1552,"elapsed_within_degrees":12.4886},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.9313},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.73,"elongation":13.621},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.73,"opposition_distance":166.379}},"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":"05:14","sunsetLocal":"19:26","solarNoonLocal":"12:20","dayLengthHours":14.207081680759451,"dayLengthDisplay":"14 Hours 12 Mins 25 Secs","nightLengthDisplay":"9 Hours 47 Mins 35 Secs","moonriseLocal":"04:24","moonsetLocal":"18:36","rahuKala":{"name":"Rāhu Kāla","start":"12:20","end":"14:06","startHours":12.33023724873009,"endHours":14.10612245882502,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:00","end":"08:47","startHours":7.002581618445294,"endHours":8.778466828540225,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:33","end":"12:20","startHours":10.554352038635157,"endHours":12.33023724873009,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"09:01","startHours":8.541682133860903,"endHours":9.01525152321955,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:49","end":"06:12","startHours":5.818658145048674,"endHours":6.197513656535593,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:48","startHours":11.856667859371441,"endHours":12.803806638088737,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:20","end":"04:17","startHours":3.3324188509157695,"endHours":4.279557629633066,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:03","end":"05:14","startHours":4.042772934953742,"endHours":5.226696408350363,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:42","end":"15:39","startHours":14.698084195523332,"endHours":15.64522297424063,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.233778089109816,"endHours":19.633778089109814,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:02","startHours":19.433778089109815,"endHours":20.025739825808124,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.183778089109815,"endHours":20.933778089109815,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:48","startHours":23.85666785937144,"endHours":24.803806638088737,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:14","end":"07:00","startHours":5.226696408350363,"endHours":7.002581618445294,"quality":"auspicious"},{"name":"Amṛta","start":"07:00","end":"08:47","startHours":7.002581618445294,"endHours":8.778466828540225,"quality":"auspicious"},{"name":"Kāla","start":"08:47","end":"10:33","startHours":8.778466828540225,"endHours":10.554352038635157,"quality":"inauspicious"},{"name":"Śubha","start":"10:33","end":"12:20","startHours":10.554352038635157,"endHours":12.33023724873009,"quality":"auspicious"},{"name":"Roga","start":"12:20","end":"14:06","startHours":12.33023724873009,"endHours":14.10612245882502,"quality":"inauspicious"},{"name":"Udveg","start":"14:06","end":"15:53","startHours":14.10612245882502,"endHours":15.88200766891995,"quality":"inauspicious"},{"name":"Chala","start":"15:53","end":"17:39","startHours":15.88200766891995,"endHours":17.657892879014884,"quality":"neutral"},{"name":"Labha","start":"17:39","end":"19:26","startHours":17.657892879014884,"endHours":19.433778089109815,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:26","end":"20:39","startHours":19.433778089109815,"endHours":20.657892879014884,"quality":"inauspicious"},{"name":"Chala","start":"20:39","end":"21:53","startHours":20.657892879014884,"endHours":21.882007668919954,"quality":"neutral"},{"name":"Labha","start":"21:53","end":"23:06","startHours":21.882007668919954,"endHours":23.10612245882502,"quality":"auspicious"},{"name":"Amṛta","start":"23:06","end":"00:20","startHours":23.10612245882502,"endHours":24.33023724873009,"quality":"auspicious"},{"name":"Kāla","start":"00:20","end":"01:33","startHours":24.33023724873009,"endHours":25.55435203863516,"quality":"inauspicious"},{"name":"Śubha","start":"01:33","end":"02:47","startHours":25.55435203863516,"endHours":26.778466828540225,"quality":"auspicious"},{"name":"Roga","start":"02:47","end":"04:00","startHours":26.778466828540225,"endHours":28.002581618445294,"quality":"inauspicious"},{"name":"Udveg","start":"04:00","end":"05:14","startHours":28.002581618445294,"endHours":29.226696408350364,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:14","end":"06:14","startHours":5.226696408350363,"endHours":6.226696408350363,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:14","end":"07:14","startHours":6.226696408350363,"endHours":7.226696408350363,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:14","end":"08:14","startHours":7.226696408350363,"endHours":8.226696408350364,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:14","end":"09:14","startHours":8.226696408350364,"endHours":9.226696408350364,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:14","end":"10:14","startHours":9.226696408350364,"endHours":10.226696408350364,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:14","end":"11:14","startHours":10.226696408350364,"endHours":11.226696408350364,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:14","end":"12:14","startHours":11.226696408350364,"endHours":12.226696408350364,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:14","end":"13:14","startHours":12.226696408350364,"endHours":13.226696408350364,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:14","end":"14:14","startHours":13.226696408350364,"endHours":14.226696408350364,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:14","end":"15:14","startHours":14.226696408350364,"endHours":15.226696408350364,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:14","end":"16:14","startHours":15.226696408350364,"endHours":16.226696408350364,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:14","end":"17:14","startHours":16.226696408350364,"endHours":17.226696408350364,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:14","end":"18:14","startHours":17.226696408350364,"endHours":18.226696408350364,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:14","end":"19:14","startHours":18.226696408350364,"endHours":19.226696408350364,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:14","end":"20:14","startHours":19.226696408350364,"endHours":20.226696408350364,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:14","end":"21:14","startHours":20.226696408350364,"endHours":21.226696408350364,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:14","end":"22:14","startHours":21.226696408350364,"endHours":22.226696408350364,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:14","end":"23:14","startHours":22.226696408350364,"endHours":23.226696408350364,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:14","end":"00:14","startHours":23.226696408350364,"endHours":24.226696408350364,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:14","end":"01:14","startHours":24.226696408350364,"endHours":25.226696408350364,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:14","end":"02:14","startHours":25.226696408350364,"endHours":26.226696408350364,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:14","end":"03:14","startHours":26.226696408350364,"endHours":27.226696408350364,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:14","end":"04:14","startHours":27.226696408350364,"endHours":28.226696408350364,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:14","end":"05:14","startHours":28.226696408350364,"endHours":29.226696408350364,"planetary_lord":"Sun"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.119954568149485,"eotMinutes":-3.2562349238053434,"ayanamsa":25.7947}},"calendars":{"vikram_samvat":2195,"vikram_samvatsara":"Virodhakṛt","saka_samvat":2060,"saka_samvatsara":"Vilambī","bengali_samvat":1545,"malayalam_era":1314,"nanakshahi_year":669,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Caturdaśī · Vikram 2195 Virodhakṛt · Śaka 2060 Vilambī"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 December 31, 2138 CE · Perth, Australia · Vidhyamitra","description":"December 31, 2138 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 05:14, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2138-12-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2138-12-31","sa":"https://sa.vidhyamitra.com/city/perth/2138-12-31","hi":"https://hi.vidhyamitra.com/city/perth/2138-12-31","x-default":"https://vidhyamitra.com/city/perth/2138-12-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T03:58:58.820Z","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":"2026-06-01T03:58:58.820Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T03:58:58.820Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}