{"id":"vidhyamitra:city-day:colombo:1981-12-29:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/1981-12-29","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-29","date_display":"December 29, 1981 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":1981,"month":12,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444967.770833,"kali_year":5083,"ahargana":1856502.2708,"sun":{"sidereal_longitude":253.4183,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":284.4929,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":31.0746,"elapsed_within_tithi_degrees":7.0746},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.4929,"elapsed_within_degrees":4.4929},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":177.9113},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1981,"month":12,"day":29,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444967.770833,"ahargana":1856502.2708,"kali_year":5083,"ayanamsa_lahiri":23.6014,"grahas":{"sun":{"sidereal_longitude":253.63560900000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":282.5707090000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false,"latitude":-0.8514},"mars":{"sidereal_longitude":162.433309,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":264.48300900000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":192.451909,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":285.37290900000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":177.393009,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":93.5756,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":273.5756,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1981,"month":12,"day":29,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444967.770833,"kali_year":5083,"ahargana":1856502.2708,"sun":{"sidereal_longitude":253.4183,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":284.4929,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":31.0746,"elapsed_within_tithi_degrees":7.0746},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.4929,"elapsed_within_degrees":4.4929},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":177.9113},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.851,"elongation":31.075},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.851,"opposition_distance":148.925}},"eclipse_window_40days":[]},"city":{"slug":"colombo","name":"Colombo, Sri Lanka","lat":6.9271,"lon":79.8612,"tz_offset_hours":5.5,"country":"LK","tier":"diaspora"},"tier2":{"city":{"slug":"colombo","name":"Colombo, Sri Lanka","lat":6.9271,"lon":79.8612,"tz_offset_hours":5.5,"country":"LK","tier":"diaspora"},"sunriseLocal":"06:21","sunsetLocal":"18:05","solarNoonLocal":"12:13","dayLengthHours":11.723152108035572,"dayLengthDisplay":"11 Hours 43 Mins 23 Secs","nightLengthDisplay":"12 Hours 16 Mins 37 Secs","moonriseLocal":"08:16","moonsetLocal":"20:02","rahuKala":{"name":"Rāhu Kāla","start":"15:09","end":"16:37","startHours":15.14582096775172,"endHours":16.611214981256165,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:17","end":"10:45","startHours":9.284244913733932,"endHours":10.74963892723838,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:13","end":"13:41","startHours":12.215032940742827,"endHours":13.680426954247272,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:05","end":"09:29","startHours":9.088859045266673,"endHours":9.479630782201191,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:09","startHours":6.841921557893189,"endHours":7.154538947440804,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:36","startHours":11.824261203808307,"endHours":12.605804677677346,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:47","end":"05:34","startHours":4.790369938986963,"endHours":5.571913412856001,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:23","end":"06:21","startHours":5.3765275443887415,"endHours":6.35345688672504,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:57","startHours":14.168891625415421,"endHours":14.950435099284459,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.876608994760613,"endHours":18.27660899476061,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:34","startHours":18.076608994760612,"endHours":18.56507366592876,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.826608994760612,"endHours":19.576608994760612,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:36","startHours":23.82426120380831,"endHours":24.605804677677344,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:21","end":"07:49","startHours":6.35345688672504,"endHours":7.818850900229486,"quality":"inauspicious"},{"name":"Udveg","start":"07:49","end":"09:17","startHours":7.818850900229486,"endHours":9.284244913733932,"quality":"inauspicious"},{"name":"Chala","start":"09:17","end":"10:45","startHours":9.284244913733932,"endHours":10.74963892723838,"quality":"neutral"},{"name":"Labha","start":"10:45","end":"12:13","startHours":10.74963892723838,"endHours":12.215032940742827,"quality":"auspicious"},{"name":"Amṛta","start":"12:13","end":"13:41","startHours":12.215032940742827,"endHours":13.680426954247272,"quality":"auspicious"},{"name":"Kāla","start":"13:41","end":"15:09","startHours":13.680426954247272,"endHours":15.14582096775172,"quality":"inauspicious"},{"name":"Śubha","start":"15:09","end":"16:37","startHours":15.14582096775172,"endHours":16.611214981256165,"quality":"auspicious"},{"name":"Roga","start":"16:37","end":"18:05","startHours":16.611214981256165,"endHours":18.076608994760612,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:05","end":"19:37","startHours":18.076608994760612,"endHours":19.611214981256165,"quality":"inauspicious"},{"name":"Śubha","start":"19:37","end":"21:09","startHours":19.611214981256165,"endHours":21.145820967751717,"quality":"auspicious"},{"name":"Roga","start":"21:09","end":"22:41","startHours":21.145820967751717,"endHours":22.680426954247274,"quality":"inauspicious"},{"name":"Udveg","start":"22:41","end":"00:13","startHours":22.680426954247274,"endHours":24.215032940742827,"quality":"inauspicious"},{"name":"Chala","start":"00:13","end":"01:45","startHours":24.215032940742827,"endHours":25.74963892723838,"quality":"neutral"},{"name":"Labha","start":"01:45","end":"03:17","startHours":25.74963892723838,"endHours":27.284244913733932,"quality":"auspicious"},{"name":"Amṛta","start":"03:17","end":"04:49","startHours":27.284244913733932,"endHours":28.818850900229485,"quality":"auspicious"},{"name":"Kāla","start":"04:49","end":"06:21","startHours":28.818850900229485,"endHours":30.35345688672504,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.35345688672504,"endHours":7.35345688672504,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.35345688672504,"endHours":8.35345688672504,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.35345688672504,"endHours":9.35345688672504,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.35345688672504,"endHours":10.35345688672504,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.35345688672504,"endHours":11.35345688672504,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.35345688672504,"endHours":12.35345688672504,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.35345688672504,"endHours":13.35345688672504,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.35345688672504,"endHours":14.35345688672504,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.35345688672504,"endHours":15.35345688672504,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.35345688672504,"endHours":16.35345688672504,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.35345688672504,"endHours":17.35345688672504,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.35345688672504,"endHours":18.35345688672504,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.35345688672504,"endHours":19.35345688672504,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.35345688672504,"endHours":20.35345688672504,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.35345688672504,"endHours":21.35345688672504,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.35345688672504,"endHours":22.35345688672504,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.35345688672504,"endHours":23.35345688672504,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.35345688672504,"endHours":24.35345688672504,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.35345688672504,"endHours":25.35345688672504,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.35345688672504,"endHours":26.35345688672504,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.35345688672504,"endHours":27.35345688672504,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.35345688672504,"endHours":28.35345688672504,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.35345688672504,"endHours":29.35345688672504,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.35345688672504,"endHours":30.35345688672504,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","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":-23.238780933088552,"eotMinutes":-2.3467764445695645,"ayanamsa":23.6014}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","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 Śukla Tṛtīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"colombo"},"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, 1981 CE · Colombo, Sri Lanka · Vidhyamitra","description":"December 29, 1981 CE for Colombo, Sri Lanka: Śukla Tṛtīyā, sūryodaya 06:21, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/1981-12-29","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/1981-12-29","sa":"https://sa.vidhyamitra.com/city/colombo/1981-12-29","hi":"https://hi.vidhyamitra.com/city/colombo/1981-12-29","x-default":"https://vidhyamitra.com/city/colombo/1981-12-29"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T10:40:43.672Z","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":"2026-06-02T10:40:43.672Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T10:40:43.672Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}