{"id":"vidhyamitra:city-day:colombo:2016-10-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2016-10-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2016-10-17","date_display":"October 17, 2016 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":2016,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457678.770833,"kali_year":5118,"ahargana":1869213.2708,"sun":{"sidereal_longitude":179.2457,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":9.9794,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":190.7337,"elapsed_within_tithi_degrees":10.7337},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.9794,"elapsed_within_degrees":9.9794},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.225},"karana":{"half_tithi_index":31,"name":"Kaulava"},"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":2016,"month":10,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457678.770833,"ahargana":1869213.2708,"kali_year":5118,"ayanamsa_lahiri":24.0876,"grahas":{"sun":{"sidereal_longitude":180.01615500000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":12.21425499999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":-3.4404},"mars":{"sidereal_longitude":259.08315500000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":172.283955,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":163.43535500000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":214.18275500000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":228.64905499999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":140.0856,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":320.0856,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":2016,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457678.770833,"kali_year":5118,"ahargana":1869213.2708,"sun":{"sidereal_longitude":179.2457,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":9.9794,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":190.7337,"elapsed_within_tithi_degrees":10.7337},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.9794,"elapsed_within_degrees":9.9794},"yoga":{"number":15,"name":"Vajra","sum_longitude":189.225},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.44,"elongation":169.266},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.44,"opposition_distance":10.734}},"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":"05:57","sunsetLocal":"17:54","solarNoonLocal":"11:55","dayLengthHours":11.96059816248501,"dayLengthDisplay":"11 Hours 57 Mins 38 Secs","nightLengthDisplay":"12 Hours 02 Mins 22 Secs","moonriseLocal":"18:35","moonsetLocal":"06:53","rahuKala":{"name":"Rāhu Kāla","start":"07:26","end":"08:56","startHours":7.436905363034324,"endHours":8.93198013334495,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:26","end":"11:55","startHours":10.427054903655575,"endHours":11.922129673966202,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:25","end":"14:55","startHours":13.417204444276829,"endHours":14.912279214587453,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:08","startHours":8.732636830636865,"endHours":9.131323436053034,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:26","end":"06:46","startHours":6.4401888494939055,"endHours":6.7591381338268395,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:31","end":"12:19","startHours":11.523443068550035,"endHours":12.320816279382369,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:21","end":"05:09","startHours":4.347084171059029,"endHours":5.144457381891363,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:57","end":"05:57","startHours":4.94511407918328,"endHours":5.941830592723697,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:43","startHours":13.915562701047037,"endHours":14.71293591187937,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:42","end":"18:06","startHours":17.702428755208707,"endHours":18.102428755208706,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:54","end":"18:24","startHours":17.902428755208707,"endHours":18.400787011978917,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:39","end":"19:24","startHours":17.652428755208707,"endHours":19.402428755208707,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:31","end":"00:19","startHours":23.523443068550037,"endHours":24.32081627938237,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:57","end":"07:26","startHours":5.941830592723697,"endHours":7.436905363034324,"quality":"auspicious"},{"name":"Kāla","start":"07:26","end":"08:56","startHours":7.436905363034324,"endHours":8.93198013334495,"quality":"inauspicious"},{"name":"Śubha","start":"08:56","end":"10:26","startHours":8.93198013334495,"endHours":10.427054903655575,"quality":"auspicious"},{"name":"Roga","start":"10:26","end":"11:55","startHours":10.427054903655575,"endHours":11.922129673966202,"quality":"inauspicious"},{"name":"Udveg","start":"11:55","end":"13:25","startHours":11.922129673966202,"endHours":13.417204444276829,"quality":"inauspicious"},{"name":"Chala","start":"13:25","end":"14:55","startHours":13.417204444276829,"endHours":14.912279214587453,"quality":"neutral"},{"name":"Labha","start":"14:55","end":"16:24","startHours":14.912279214587453,"endHours":16.40735398489808,"quality":"auspicious"},{"name":"Amṛta","start":"16:24","end":"17:54","startHours":16.40735398489808,"endHours":17.902428755208707,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:54","end":"19:24","startHours":17.902428755208707,"endHours":19.40735398489808,"quality":"neutral"},{"name":"Labha","start":"19:24","end":"20:55","startHours":19.40735398489808,"endHours":20.912279214587453,"quality":"auspicious"},{"name":"Amṛta","start":"20:55","end":"22:25","startHours":20.912279214587453,"endHours":22.417204444276827,"quality":"auspicious"},{"name":"Kāla","start":"22:25","end":"23:55","startHours":22.417204444276827,"endHours":23.922129673966204,"quality":"inauspicious"},{"name":"Śubha","start":"23:55","end":"01:26","startHours":23.922129673966204,"endHours":25.427054903655574,"quality":"auspicious"},{"name":"Roga","start":"01:26","end":"02:56","startHours":25.427054903655574,"endHours":26.93198013334495,"quality":"inauspicious"},{"name":"Udveg","start":"02:56","end":"04:26","startHours":26.93198013334495,"endHours":28.436905363034324,"quality":"inauspicious"},{"name":"Chala","start":"04:26","end":"05:57","startHours":28.436905363034324,"endHours":29.941830592723697,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.941830592723697,"endHours":6.941830592723697,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.941830592723697,"endHours":7.941830592723697,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.941830592723697,"endHours":8.941830592723697,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.941830592723697,"endHours":9.941830592723697,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.941830592723697,"endHours":10.941830592723697,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.941830592723697,"endHours":11.941830592723697,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.941830592723697,"endHours":12.941830592723697,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.941830592723697,"endHours":13.941830592723697,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.941830592723697,"endHours":14.941830592723697,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.941830592723697,"endHours":15.941830592723697,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.941830592723697,"endHours":16.941830592723697,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.941830592723697,"endHours":17.941830592723697,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.941830592723697,"endHours":18.941830592723697,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.941830592723697,"endHours":19.941830592723697,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.941830592723697,"endHours":20.941830592723697,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.941830592723697,"endHours":21.941830592723697,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.941830592723697,"endHours":22.941830592723697,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.941830592723697,"endHours":23.941830592723697,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.941830592723697,"endHours":24.941830592723697,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.941830592723697,"endHours":25.941830592723697,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.941830592723697,"endHours":26.941830592723697,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.941830592723697,"endHours":27.941830592723697,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.941830592723697,"endHours":28.941830592723697,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.941830592723697,"endHours":29.941830592723697,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-9.347974576677828,"eotMinutes":15.227419562027912,"ayanamsa":24.0876}},"calendars":{"vikram_samvat":2073,"vikram_samvatsara":"Saumya","saka_samvat":1938,"saka_samvatsara":"Durmukhi","bengali_samvat":1423,"malayalam_era":1192,"nanakshahi_year":547,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Pratipada · Vikram 2073 Saumya · Śaka 1938 Durmukhi"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"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":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"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 October 17, 2016 CE · Colombo, Sri Lanka · Vidhyamitra","description":"October 17, 2016 CE for Colombo, Sri Lanka: Kṛṣṇa Pratipada, sūryodaya 05:57, sūryāsta 17:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2016-10-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2016-10-17","sa":"https://sa.vidhyamitra.com/city/colombo/2016-10-17","hi":"https://hi.vidhyamitra.com/city/colombo/2016-10-17","x-default":"https://vidhyamitra.com/city/colombo/2016-10-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T16:31:01.745Z","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":"2026-05-15T16:31:01.745Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T16:31:01.745Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}