{"id":"vidhyamitra:city-day:colombo:2011-05-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2011-05-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-05-20","date_display":"May 20, 2011 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":2011,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455701.770833,"kali_year":5113,"ahargana":1867236.2708,"sun":{"sidereal_longitude":34.6227,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":248.8375,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":214.2148,"elapsed_within_tithi_degrees":10.2148},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":248.8375,"elapsed_within_degrees":8.8375},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.4602},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2011,"month":5,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455701.770833,"ahargana":1867236.2708,"kali_year":5113,"ayanamsa_lahiri":24.012,"grahas":{"sun":{"sidereal_longitude":34.69389100000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":248.71179099999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false,"latitude":0.3137},"mars":{"sidereal_longitude":12.345391000000006,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":11.394790999999998,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":2.6286910000000034,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":10.858991000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":166.673491,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":244.8366,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":64.8366,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4},"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":2011,"month":5,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455701.770833,"kali_year":5113,"ahargana":1867236.2708,"sun":{"sidereal_longitude":34.6227,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":248.8375,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":214.2148,"elapsed_within_tithi_degrees":10.2148},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":248.8375,"elapsed_within_degrees":8.8375},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.4602},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.314,"elongation":145.785},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.314,"opposition_distance":34.215}},"eclipse_window_40days":[{"offset_days":13,"type":"solar","occurs":true,"moon_latitude":1.195,"elongation":1.712}]},"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":"05:53","sunsetLocal":"18:21","solarNoonLocal":"12:07","dayLengthHours":12.454639274559723,"dayLengthDisplay":"12 Hours 27 Mins 17 Secs","nightLengthDisplay":"11 Hours 32 Mins 43 Secs","moonriseLocal":"20:33","moonsetLocal":"08:14","rahuKala":{"name":"Rāhu Kāla","start":"10:34","end":"12:07","startHours":10.55911820707695,"endHours":12.115948116396915,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:14","end":"16:47","startHours":15.229607935036846,"endHours":16.78643784435681,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:27","end":"09:00","startHours":7.44545838843702,"endHours":9.002288297756985,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:48","end":"09:13","startHours":8.794710976514324,"endHours":9.209865618999647,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:44","startHours":6.407571782223709,"endHours":6.739695496211968,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:32","startHours":11.70079347391159,"endHours":12.53110275888224,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:14","end":"05:03","startHours":4.228009909175758,"endHours":5.0583191941464065,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:53","startHours":4.850741872903744,"endHours":5.888628479117054,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"15:01","startHours":14.191721328823535,"endHours":15.022030613794183,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:09","end":"18:33","startHours":18.143267753676778,"endHours":18.543267753676776,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:21","end":"18:52","startHours":18.343267753676777,"endHours":18.862211056783433,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:06","end":"19:51","startHours":18.093267753676777,"endHours":19.843267753676777,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:32","startHours":23.70079347391159,"endHours":24.531102758882238,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:53","end":"07:27","startHours":5.888628479117054,"endHours":7.44545838843702,"quality":"neutral"},{"name":"Labha","start":"07:27","end":"09:00","startHours":7.44545838843702,"endHours":9.002288297756985,"quality":"auspicious"},{"name":"Amṛta","start":"09:00","end":"10:34","startHours":9.002288297756985,"endHours":10.55911820707695,"quality":"auspicious"},{"name":"Kāla","start":"10:34","end":"12:07","startHours":10.55911820707695,"endHours":12.115948116396915,"quality":"inauspicious"},{"name":"Śubha","start":"12:07","end":"13:40","startHours":12.115948116396915,"endHours":13.67277802571688,"quality":"auspicious"},{"name":"Roga","start":"13:40","end":"15:14","startHours":13.67277802571688,"endHours":15.229607935036846,"quality":"inauspicious"},{"name":"Udveg","start":"15:14","end":"16:47","startHours":15.229607935036846,"endHours":16.78643784435681,"quality":"inauspicious"},{"name":"Chala","start":"16:47","end":"18:21","startHours":16.78643784435681,"endHours":18.343267753676777,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:21","end":"19:47","startHours":18.343267753676777,"endHours":19.78643784435681,"quality":"inauspicious"},{"name":"Udveg","start":"19:47","end":"21:14","startHours":19.78643784435681,"endHours":21.229607935036846,"quality":"inauspicious"},{"name":"Chala","start":"21:14","end":"22:40","startHours":21.229607935036846,"endHours":22.67277802571688,"quality":"neutral"},{"name":"Labha","start":"22:40","end":"00:07","startHours":22.67277802571688,"endHours":24.115948116396915,"quality":"auspicious"},{"name":"Amṛta","start":"00:07","end":"01:34","startHours":24.115948116396915,"endHours":25.55911820707695,"quality":"auspicious"},{"name":"Kāla","start":"01:34","end":"03:00","startHours":25.55911820707695,"endHours":27.002288297756984,"quality":"inauspicious"},{"name":"Śubha","start":"03:00","end":"04:27","startHours":27.002288297756984,"endHours":28.445458388437018,"quality":"auspicious"},{"name":"Roga","start":"04:27","end":"05:53","startHours":28.445458388437018,"endHours":29.888628479117052,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:53","end":"06:53","startHours":5.888628479117054,"endHours":6.888628479117054,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:53","end":"07:53","startHours":6.888628479117054,"endHours":7.888628479117054,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:53","end":"08:53","startHours":7.888628479117054,"endHours":8.888628479117054,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:53","end":"09:53","startHours":8.888628479117054,"endHours":9.888628479117054,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:53","end":"10:53","startHours":9.888628479117054,"endHours":10.888628479117054,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:53","end":"11:53","startHours":10.888628479117054,"endHours":11.888628479117054,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:53","end":"12:53","startHours":11.888628479117054,"endHours":12.888628479117054,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:53","end":"13:53","startHours":12.888628479117054,"endHours":13.888628479117054,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:53","end":"14:53","startHours":13.888628479117054,"endHours":14.888628479117054,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:53","end":"15:53","startHours":14.888628479117054,"endHours":15.888628479117054,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:53","end":"16:53","startHours":15.888628479117054,"endHours":16.888628479117052,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:53","end":"17:53","startHours":16.888628479117052,"endHours":17.888628479117052,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:53","end":"18:53","startHours":17.888628479117052,"endHours":18.888628479117052,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:53","end":"19:53","startHours":18.888628479117052,"endHours":19.888628479117052,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:53","end":"20:53","startHours":19.888628479117052,"endHours":20.888628479117052,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:53","end":"21:53","startHours":20.888628479117052,"endHours":21.888628479117052,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:53","end":"22:53","startHours":21.888628479117052,"endHours":22.888628479117052,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:53","end":"23:53","startHours":22.888628479117052,"endHours":23.888628479117052,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:53","end":"00:53","startHours":23.888628479117052,"endHours":24.888628479117052,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:53","end":"01:53","startHours":24.888628479117052,"endHours":25.888628479117052,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:53","end":"02:53","startHours":25.888628479117052,"endHours":26.888628479117052,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:53","end":"03:53","startHours":26.888628479117052,"endHours":27.888628479117052,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:53","end":"04:53","startHours":27.888628479117052,"endHours":28.888628479117052,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:53","end":"05:53","startHours":28.888628479117052,"endHours":29.888628479117052,"planetary_lord":"Mars"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.868786845328227,"eotMinutes":3.5983130161851964,"ayanamsa":24.012}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Tṛtīyā · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 May 20, 2011 CE · Colombo, Sri Lanka · Vidhyamitra","description":"May 20, 2011 CE for Colombo, Sri Lanka: Kṛṣṇa Tṛtīyā, sūryodaya 05:53, sūryāsta 18:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2011-05-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2011-05-20","sa":"https://sa.vidhyamitra.com/city/colombo/2011-05-20","hi":"https://hi.vidhyamitra.com/city/colombo/2011-05-20","x-default":"https://vidhyamitra.com/city/colombo/2011-05-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T21:42:14.266Z","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":"2026-06-01T21:42:14.266Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T21:42:14.266Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}