{"id":"vidhyamitra:city-day:colombo:2016-04-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2016-04-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2016-04-18","date_display":"April 18, 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2016,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457496.770833,"kali_year":5118,"ahargana":1869031.2708,"sun":{"sidereal_longitude":4.4431,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":136.887,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":132.444,"elapsed_within_tithi_degrees":0.444},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2,"moon_longitude":136.887,"elapsed_within_degrees":3.5537},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3301},"karana":{"half_tithi_index":22,"name":"Bava"},"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":4,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457496.770833,"ahargana":1869031.2708,"kali_year":5118,"ayanamsa_lahiri":24.0806,"grahas":{"sun":{"sidereal_longitude":4.363608999999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":138.815809,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false,"latitude":-0.9992},"mars":{"sidereal_longitude":224.59880899999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":23.989409000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":139.19230900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":350.964309,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":231.669709,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":149.7289,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":329.7289,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2016,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457496.770833,"kali_year":5118,"ahargana":1869031.2708,"sun":{"sidereal_longitude":4.4431,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":136.887,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":132.444,"elapsed_within_tithi_degrees":0.444},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2,"moon_longitude":136.887,"elapsed_within_degrees":3.5537},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3301},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.999,"elongation":132.444},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.999,"opposition_distance":47.556}},"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":"06:01","sunsetLocal":"18:19","solarNoonLocal":"12:10","dayLengthHours":12.293085012278993,"dayLengthDisplay":"12 Hours 17 Mins 35 Secs","nightLengthDisplay":"11 Hours 42 Mins 25 Secs","moonriseLocal":"15:02","moonsetLocal":"03:14","rahuKala":{"name":"Rāhu Kāla","start":"07:33","end":"09:06","startHours":7.557581738797322,"endHours":9.094217365332195,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:38","end":"12:10","startHours":10.63085299186707,"endHours":12.167488618401944,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:42","end":"15:14","startHours":13.704124244936818,"endHours":15.240759871471692,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.889332615127547,"endHours":9.299102115536845,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:52","startHours":6.533157987774072,"endHours":6.860973588101512,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:35","startHours":11.757719117992643,"endHours":12.577258118811244,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:23","end":"05:12","startHours":4.381868110625248,"endHours":5.2014071114438485,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:00","end":"06:01","startHours":4.996522361239198,"endHours":6.020946112262448,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:02","startHours":14.216336120448442,"endHours":15.035875121267042,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:07","end":"18:31","startHours":18.11403112454144,"endHours":18.51403112454144,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:19","end":"18:50","startHours":18.31403112454144,"endHours":18.826243000053065,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:04","end":"19:49","startHours":18.06403112454144,"endHours":19.81403112454144,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:35","startHours":23.757719117992643,"endHours":24.577258118811244,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:01","end":"07:33","startHours":6.020946112262448,"endHours":7.557581738797322,"quality":"auspicious"},{"name":"Kāla","start":"07:33","end":"09:06","startHours":7.557581738797322,"endHours":9.094217365332195,"quality":"inauspicious"},{"name":"Śubha","start":"09:06","end":"10:38","startHours":9.094217365332195,"endHours":10.63085299186707,"quality":"auspicious"},{"name":"Roga","start":"10:38","end":"12:10","startHours":10.63085299186707,"endHours":12.167488618401944,"quality":"inauspicious"},{"name":"Udveg","start":"12:10","end":"13:42","startHours":12.167488618401944,"endHours":13.704124244936818,"quality":"inauspicious"},{"name":"Chala","start":"13:42","end":"15:14","startHours":13.704124244936818,"endHours":15.240759871471692,"quality":"neutral"},{"name":"Labha","start":"15:14","end":"16:47","startHours":15.240759871471692,"endHours":16.777395498006566,"quality":"auspicious"},{"name":"Amṛta","start":"16:47","end":"18:19","startHours":16.777395498006566,"endHours":18.31403112454144,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:19","end":"19:47","startHours":18.31403112454144,"endHours":19.777395498006566,"quality":"neutral"},{"name":"Labha","start":"19:47","end":"21:14","startHours":19.777395498006566,"endHours":21.240759871471692,"quality":"auspicious"},{"name":"Amṛta","start":"21:14","end":"22:42","startHours":21.240759871471692,"endHours":22.704124244936818,"quality":"auspicious"},{"name":"Kāla","start":"22:42","end":"00:10","startHours":22.704124244936818,"endHours":24.167488618401944,"quality":"inauspicious"},{"name":"Śubha","start":"00:10","end":"01:38","startHours":24.167488618401944,"endHours":25.63085299186707,"quality":"auspicious"},{"name":"Roga","start":"01:38","end":"03:06","startHours":25.63085299186707,"endHours":27.094217365332195,"quality":"inauspicious"},{"name":"Udveg","start":"03:06","end":"04:33","startHours":27.094217365332195,"endHours":28.55758173879732,"quality":"inauspicious"},{"name":"Chala","start":"04:33","end":"06:01","startHours":28.55758173879732,"endHours":30.020946112262447,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.020946112262448,"endHours":7.020946112262448,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.020946112262448,"endHours":8.020946112262447,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.020946112262447,"endHours":9.020946112262447,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.020946112262447,"endHours":10.020946112262447,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.020946112262447,"endHours":11.020946112262447,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.020946112262447,"endHours":12.020946112262447,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.020946112262447,"endHours":13.020946112262447,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.020946112262447,"endHours":14.020946112262447,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.020946112262447,"endHours":15.020946112262447,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.020946112262447,"endHours":16.020946112262447,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.020946112262447,"endHours":17.020946112262447,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.020946112262447,"endHours":18.020946112262447,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.020946112262447,"endHours":19.020946112262447,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.020946112262447,"endHours":20.020946112262447,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.020946112262447,"endHours":21.020946112262447,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.020946112262447,"endHours":22.020946112262447,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.020946112262447,"endHours":23.020946112262447,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.020946112262447,"endHours":24.020946112262447,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.020946112262447,"endHours":25.020946112262447,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.020946112262447,"endHours":26.020946112262447,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.020946112262447,"endHours":27.020946112262447,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.020946112262447,"endHours":28.020946112262447,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.020946112262447,"endHours":29.020946112262447,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.020946112262447,"endHours":30.020946112262447,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.920168305661761,"eotMinutes":0.5058828958834352,"ayanamsa":24.0806}},"calendars":{"vikram_samvat":2073,"vikram_samvatsara":"Saumya","saka_samvat":1938,"saka_samvatsara":"Durmukhi","bengali_samvat":1423,"malayalam_era":1192,"nanakshahi_year":547,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Dvādaśī · Vikram 2073 Saumya · Śaka 1938 Durmukhi"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7, 6.34-35.","step_count":5,"url":"/walk/chandra-walk","steps":[{"label":"BG 6.5","url":"/bhagavad-gita/6/5","purpose":"Lift the self by the Self; begin the walk with inner responsibility."},{"label":"BG 6.6","url":"/bhagavad-gita/6/6","purpose":"See the mind as friend when mastered and enemy when unmastered."},{"label":"BG 6.7","url":"/bhagavad-gita/6/7","purpose":"Stabilize the conquered mind in heat/cold, honor/dishonor, pleasure/pain."},{"label":"BG 6.34","url":"/bhagavad-gita/6/34","purpose":"Name the restless mind honestly before trying to discipline it."},{"label":"BG 6.35","url":"/bhagavad-gita/6/35","purpose":"Complete with abhyāsa and vairāgya: practice and detachment."}]},"reason":"Somavāra (Monday) — 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 April 18, 2016 CE · Colombo, Sri Lanka · Vidhyamitra","description":"April 18, 2016 CE for Colombo, Sri Lanka: Śukla Dvādaśī, sūryodaya 06:01, sūryāsta 18:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2016-04-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2016-04-18","sa":"https://sa.vidhyamitra.com/city/colombo/2016-04-18","hi":"https://hi.vidhyamitra.com/city/colombo/2016-04-18","x-default":"https://vidhyamitra.com/city/colombo/2016-04-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-24T23:25:50.771Z","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":"2026-09-24T23:25:50.771Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-24T23:25:50.771Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}