{"id":"vidhyamitra:city-day:colombo:2018-07-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2018-07-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-07-17","date_display":"July 17, 2018 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":2018,"month":7,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458316.770833,"kali_year":5120,"ahargana":1869851.2708,"sun":{"sidereal_longitude":89.8492,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":141.9156,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":52.0664,"elapsed_within_tithi_degrees":4.0664},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":141.9156,"elapsed_within_degrees":8.5822},"yoga":{"number":18,"name":"Varīyān","sum_longitude":231.7647},"karana":{"half_tithi_index":8,"name":"Bava"},"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":2018,"month":7,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458316.770833,"ahargana":1869851.2708,"kali_year":5120,"ayanamsa_lahiri":24.112,"grahas":{"sun":{"sidereal_longitude":90.33457899999996,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"moon":{"sidereal_longitude":144.956479,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":2.62},"mars":{"sidereal_longitude":282.390579,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":115.920479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":199.17487900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":133.33867899999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":250.23787900000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":106.2813,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":286.2813,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":2018,"month":7,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458316.770833,"kali_year":5120,"ahargana":1869851.2708,"sun":{"sidereal_longitude":89.8492,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":141.9156,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":52.0664,"elapsed_within_tithi_degrees":4.0664},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":141.9156,"elapsed_within_degrees":8.5822},"yoga":{"number":18,"name":"Varīyān","sum_longitude":231.7647},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.62,"elongation":52.066},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.62,"opposition_distance":127.934}},"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":"06:02","sunsetLocal":"18:31","solarNoonLocal":"12:16","dayLengthHours":12.48085807196654,"dayLengthDisplay":"12 Hours 28 Mins 51 Secs","nightLengthDisplay":"11 Hours 31 Mins 09 Secs","moonriseLocal":"09:50","moonsetLocal":"21:59","rahuKala":{"name":"Rāhu Kāla","start":"15:24","end":"16:57","startHours":15.392360899646615,"endHours":16.952468158642432,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:09","end":"10:43","startHours":9.151931863663345,"endHours":10.712039122659164,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:16","end":"13:50","startHours":12.27214638165498,"endHours":13.832253640650798,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:57","end":"09:22","startHours":8.943917562463902,"endHours":9.359946164862787,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:33","end":"06:53","startHours":6.551753098670315,"endHours":6.884575980589423,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:41","startHours":11.856117779256094,"endHours":12.688174984053864,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:22","end":"05:12","startHours":4.367602936076171,"endHours":5.19966014087394,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:59","end":"06:02","startHours":4.991645839674498,"endHours":6.0317173456717095,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:11","startHours":14.352289393649404,"endHours":15.184346598447172,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.31257541763825,"endHours":18.71257541763825,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:02","startHours":18.51257541763825,"endHours":19.032611170636855,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.26257541763825,"endHours":20.01257541763825,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:41","startHours":23.856117779256092,"endHours":24.688174984053862,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:02","end":"07:36","startHours":6.0317173456717095,"endHours":7.5918246046675275,"quality":"inauspicious"},{"name":"Udveg","start":"07:36","end":"09:09","startHours":7.5918246046675275,"endHours":9.151931863663345,"quality":"inauspicious"},{"name":"Chala","start":"09:09","end":"10:43","startHours":9.151931863663345,"endHours":10.712039122659164,"quality":"neutral"},{"name":"Labha","start":"10:43","end":"12:16","startHours":10.712039122659164,"endHours":12.27214638165498,"quality":"auspicious"},{"name":"Amṛta","start":"12:16","end":"13:50","startHours":12.27214638165498,"endHours":13.832253640650798,"quality":"auspicious"},{"name":"Kāla","start":"13:50","end":"15:24","startHours":13.832253640650798,"endHours":15.392360899646615,"quality":"inauspicious"},{"name":"Śubha","start":"15:24","end":"16:57","startHours":15.392360899646615,"endHours":16.952468158642432,"quality":"auspicious"},{"name":"Roga","start":"16:57","end":"18:31","startHours":16.952468158642432,"endHours":18.51257541763825,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:31","end":"19:57","startHours":18.51257541763825,"endHours":19.952468158642432,"quality":"inauspicious"},{"name":"Śubha","start":"19:57","end":"21:24","startHours":19.952468158642432,"endHours":21.392360899646615,"quality":"auspicious"},{"name":"Roga","start":"21:24","end":"22:50","startHours":21.392360899646615,"endHours":22.832253640650798,"quality":"inauspicious"},{"name":"Udveg","start":"22:50","end":"00:16","startHours":22.832253640650798,"endHours":24.272146381654977,"quality":"inauspicious"},{"name":"Chala","start":"00:16","end":"01:43","startHours":24.272146381654977,"endHours":25.712039122659164,"quality":"neutral"},{"name":"Labha","start":"01:43","end":"03:09","startHours":25.712039122659164,"endHours":27.151931863663343,"quality":"auspicious"},{"name":"Amṛta","start":"03:09","end":"04:36","startHours":27.151931863663343,"endHours":28.591824604667526,"quality":"auspicious"},{"name":"Kāla","start":"04:36","end":"06:02","startHours":28.591824604667526,"endHours":30.03171734567171,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:02","end":"07:02","startHours":6.0317173456717095,"endHours":7.0317173456717095,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:02","end":"08:02","startHours":7.0317173456717095,"endHours":8.031717345671709,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:02","end":"09:02","startHours":8.031717345671709,"endHours":9.031717345671709,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:02","end":"10:02","startHours":9.031717345671709,"endHours":10.031717345671709,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:02","end":"11:02","startHours":10.031717345671709,"endHours":11.031717345671709,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:02","end":"12:02","startHours":11.031717345671709,"endHours":12.031717345671709,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:02","end":"13:02","startHours":12.031717345671709,"endHours":13.031717345671709,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:02","end":"14:02","startHours":13.031717345671709,"endHours":14.031717345671709,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:02","end":"15:02","startHours":14.031717345671709,"endHours":15.031717345671709,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:02","end":"16:02","startHours":15.031717345671709,"endHours":16.03171734567171,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:02","end":"17:02","startHours":16.03171734567171,"endHours":17.03171734567171,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:02","end":"18:02","startHours":17.03171734567171,"endHours":18.03171734567171,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:02","end":"19:02","startHours":18.03171734567171,"endHours":19.03171734567171,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:02","end":"20:02","startHours":19.03171734567171,"endHours":20.03171734567171,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:02","end":"21:02","startHours":20.03171734567171,"endHours":21.03171734567171,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:02","end":"22:02","startHours":21.03171734567171,"endHours":22.03171734567171,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:02","end":"23:02","startHours":22.03171734567171,"endHours":23.03171734567171,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:02","end":"00:02","startHours":23.03171734567171,"endHours":24.03171734567171,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:02","end":"01:02","startHours":24.03171734567171,"endHours":25.03171734567171,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:02","end":"02:02","startHours":25.03171734567171,"endHours":26.03171734567171,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:02","end":"03:02","startHours":26.03171734567171,"endHours":27.03171734567171,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:02","end":"04:02","startHours":27.03171734567171,"endHours":28.03171734567171,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:02","end":"05:02","startHours":28.03171734567171,"endHours":29.03171734567171,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:02","end":"06:02","startHours":29.03171734567171,"endHours":30.03171734567171,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"West","rahuVasa":"North","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.22766899837719,"eotMinutes":-5.773582899298716,"ayanamsa":24.112}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Pañcamī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"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 July 17, 2018 CE · Colombo, Sri Lanka · Vidhyamitra","description":"July 17, 2018 CE for Colombo, Sri Lanka: Śukla Pañcamī, sūryodaya 06:02, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2018-07-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2018-07-17","sa":"https://sa.vidhyamitra.com/city/colombo/2018-07-17","hi":"https://hi.vidhyamitra.com/city/colombo/2018-07-17","x-default":"https://vidhyamitra.com/city/colombo/2018-07-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T11:53:17.975Z","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":"2026-05-15T11:53:17.975Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T11:53:17.975Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}