{"id":"vidhyamitra:city-day:perth:1986-12-29:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1986-12-29","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-12-29","date_display":"December 29, 1986 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":1986,"month":12,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446793.770833,"kali_year":5088,"ahargana":1858328.2708,"sun":{"sidereal_longitude":253.1163,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":224.9651,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.8488,"elapsed_within_tithi_degrees":7.8488},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":224.9651,"elapsed_within_degrees":11.6318},"yoga":{"number":9,"name":"Śūla","sum_longitude":118.0814},"karana":{"half_tithi_index":55,"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":1986,"month":12,"day":29,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446793.770833,"ahargana":1858328.2708,"kali_year":5088,"ayanamsa_lahiri":23.6713,"grahas":{"sun":{"sidereal_longitude":253.34764199999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":223.57824200000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false,"latitude":-3.35},"mars":{"sidereal_longitude":329.155842,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":245.07644200000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":324.15334200000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":207.96964200000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":231.01614199999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":356.8253,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":176.8253,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":1986,"month":12,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446793.770833,"kali_year":5088,"ahargana":1858328.2708,"sun":{"sidereal_longitude":253.1163,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":224.9651,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":331.8488,"elapsed_within_tithi_degrees":7.8488},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":224.9651,"elapsed_within_degrees":11.6318},"yoga":{"number":9,"name":"Śūla","sum_longitude":118.0814},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.35,"elongation":28.151},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.35,"opposition_distance":151.849}},"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":"05:12","sunsetLocal":"19:26","solarNoonLocal":"12:19","dayLengthHours":14.220631984525784,"dayLengthDisplay":"14 Hours 13 Mins 14 Secs","nightLengthDisplay":"9 Hours 46 Mins 46 Secs","moonriseLocal":"03:20","moonsetLocal":"17:20","rahuKala":{"name":"Rāhu Kāla","start":"06:59","end":"08:46","startHours":6.9823426132123245,"endHours":8.759921611278047,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:32","end":"12:19","startHours":10.53750060934377,"endHours":12.315079607409494,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:06","end":"15:52","startHours":14.092658605475215,"endHours":15.87023760354094,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:31","end":"09:00","startHours":8.522911078202618,"endHours":8.996932144353476,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:48","end":"06:11","startHours":5.797289947835175,"endHours":6.176506800755862,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:47","startHours":11.841058541258633,"endHours":12.789100673560352,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:19","end":"04:15","startHours":3.308679350543163,"endHours":4.256721482844882,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:01","end":"05:12","startHours":4.019710949769452,"endHours":5.204763615146601,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:41","end":"15:38","startHours":14.68518493816379,"endHours":15.633227070465509,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:14","end":"19:38","startHours":19.225395599672385,"endHours":19.625395599672384,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:26","end":"20:01","startHours":19.425395599672385,"endHours":20.01792193236096,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:11","end":"20:56","startHours":19.175395599672385,"endHours":20.925395599672385,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:47","startHours":23.841058541258633,"endHours":24.789100673560355,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:12","end":"06:59","startHours":5.204763615146601,"endHours":6.9823426132123245,"quality":"auspicious"},{"name":"Kāla","start":"06:59","end":"08:46","startHours":6.9823426132123245,"endHours":8.759921611278047,"quality":"inauspicious"},{"name":"Śubha","start":"08:46","end":"10:32","startHours":8.759921611278047,"endHours":10.53750060934377,"quality":"auspicious"},{"name":"Roga","start":"10:32","end":"12:19","startHours":10.53750060934377,"endHours":12.315079607409494,"quality":"inauspicious"},{"name":"Udveg","start":"12:19","end":"14:06","startHours":12.315079607409494,"endHours":14.092658605475215,"quality":"inauspicious"},{"name":"Chala","start":"14:06","end":"15:52","startHours":14.092658605475215,"endHours":15.87023760354094,"quality":"neutral"},{"name":"Labha","start":"15:52","end":"17:39","startHours":15.87023760354094,"endHours":17.647816601606664,"quality":"auspicious"},{"name":"Amṛta","start":"17:39","end":"19:26","startHours":17.647816601606664,"endHours":19.425395599672385,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:26","end":"20:39","startHours":19.425395599672385,"endHours":20.64781660160666,"quality":"neutral"},{"name":"Labha","start":"20:39","end":"21:52","startHours":20.64781660160666,"endHours":21.87023760354094,"quality":"auspicious"},{"name":"Amṛta","start":"21:52","end":"23:06","startHours":21.87023760354094,"endHours":23.092658605475215,"quality":"auspicious"},{"name":"Kāla","start":"23:06","end":"00:19","startHours":23.092658605475215,"endHours":24.315079607409494,"quality":"inauspicious"},{"name":"Śubha","start":"00:19","end":"01:32","startHours":24.315079607409494,"endHours":25.53750060934377,"quality":"auspicious"},{"name":"Roga","start":"01:32","end":"02:46","startHours":25.53750060934377,"endHours":26.759921611278045,"quality":"inauspicious"},{"name":"Udveg","start":"02:46","end":"03:59","startHours":26.759921611278045,"endHours":27.982342613212325,"quality":"inauspicious"},{"name":"Chala","start":"03:59","end":"05:12","startHours":27.982342613212325,"endHours":29.2047636151466,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:12","end":"06:12","startHours":5.204763615146601,"endHours":6.204763615146601,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:12","end":"07:12","startHours":6.204763615146601,"endHours":7.204763615146601,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:12","end":"08:12","startHours":7.204763615146601,"endHours":8.2047636151466,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:12","end":"09:12","startHours":8.2047636151466,"endHours":9.2047636151466,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:12","end":"10:12","startHours":9.2047636151466,"endHours":10.2047636151466,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:12","end":"11:12","startHours":10.2047636151466,"endHours":11.2047636151466,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:12","end":"12:12","startHours":11.2047636151466,"endHours":12.2047636151466,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:12","end":"13:12","startHours":12.2047636151466,"endHours":13.2047636151466,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:12","end":"14:12","startHours":13.2047636151466,"endHours":14.2047636151466,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:12","end":"15:12","startHours":14.2047636151466,"endHours":15.2047636151466,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:12","end":"16:12","startHours":15.2047636151466,"endHours":16.2047636151466,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:12","end":"17:12","startHours":16.2047636151466,"endHours":17.2047636151466,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:12","end":"18:12","startHours":17.2047636151466,"endHours":18.2047636151466,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:12","end":"19:12","startHours":18.2047636151466,"endHours":19.2047636151466,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:12","end":"20:12","startHours":19.2047636151466,"endHours":20.2047636151466,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:12","end":"21:12","startHours":20.2047636151466,"endHours":21.2047636151466,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:12","end":"22:12","startHours":21.2047636151466,"endHours":22.2047636151466,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:12","end":"23:12","startHours":22.2047636151466,"endHours":23.2047636151466,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:12","end":"00:12","startHours":23.2047636151466,"endHours":24.2047636151466,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:12","end":"01:12","startHours":24.2047636151466,"endHours":25.2047636151466,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:12","end":"02:12","startHours":25.2047636151466,"endHours":26.2047636151466,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:12","end":"03:12","startHours":26.2047636151466,"endHours":27.2047636151466,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:12","end":"04:12","startHours":27.2047636151466,"endHours":28.2047636151466,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:12","end":"05:12","startHours":28.2047636151466,"endHours":29.2047636151466,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"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":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"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":-23.250493960402096,"eotMinutes":-2.3467764445695645,"ayanamsa":23.6713}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"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 Trayodaśī · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 29, 1986 CE · Perth, Australia · Vidhyamitra","description":"December 29, 1986 CE for Perth, Australia: Kṛṣṇa Trayodaśī, sūryodaya 05:12, sūryāsta 19:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1986-12-29","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1986-12-29","sa":"https://sa.vidhyamitra.com/city/perth/1986-12-29","hi":"https://hi.vidhyamitra.com/city/perth/1986-12-29","x-default":"https://vidhyamitra.com/city/perth/1986-12-29"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T03:12:12.148Z","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":"2026-06-02T03:12:12.148Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T03:12:12.148Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}