{"id":"vidhyamitra:city-day:colombo:1981-07-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/1981-07-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-26","date_display":"July 26, 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":7,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444811.770833,"kali_year":5083,"ahargana":1856346.2708,"sun":{"sidereal_longitude":98.9273,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":32.2685,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":293.3412,"elapsed_within_tithi_degrees":5.3412},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":32.2685,"elapsed_within_degrees":5.6019},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.1959},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":7,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444811.770833,"ahargana":1856346.2708,"kali_year":5083,"ayanamsa_lahiri":23.5955,"grahas":{"sun":{"sidereal_longitude":99.38376900000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"moon":{"sidereal_longitude":31.121268999999984,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":-4.2165},"mars":{"sidereal_longitude":71.81216899999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":83.737369,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":161.88196900000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":128.439169,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":161.19586900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.8412,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.8412,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":7,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444811.770833,"kali_year":5083,"ahargana":1856346.2708,"sun":{"sidereal_longitude":98.9273,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":32.2685,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":293.3412,"elapsed_within_tithi_degrees":5.3412},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":32.2685,"elapsed_within_degrees":5.6019},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":131.1959},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.216,"elongation":66.659},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.216,"opposition_distance":113.341}},"eclipse_window_40days":[{"offset_days":-9,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":5,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"06:03","sunsetLocal":"18:30","solarNoonLocal":"12:17","dayLengthHours":12.44742778517027,"dayLengthDisplay":"12 Hours 26 Mins 51 Secs","nightLengthDisplay":"11 Hours 33 Mins 09 Secs","moonriseLocal":"01:32","moonsetLocal":"13:56","rahuKala":{"name":"Rāhu Kāla","start":"16:57","end":"18:30","startHours":16.946792945166194,"endHours":18.50272141831248,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:17","end":"13:50","startHours":12.279007525727344,"endHours":13.834935998873629,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:23","end":"16:57","startHours":15.390864472019912,"endHours":16.946792945166194,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:22","startHours":8.95969344968194,"endHours":9.374607709187615,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:34","end":"06:54","startHours":6.5739364575243044,"endHours":6.905867865128845,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:42","startHours":11.86409326622167,"endHours":12.69392178523302,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:24","end":"05:14","startHours":4.395636595119507,"endHours":5.225465114130858,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:01","end":"06:03","startHours":5.01800798437802,"endHours":6.05529363314221,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:11","startHours":14.353578823255724,"endHours":15.183407342267076,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.30272141831248,"endHours":18.70272141831248,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:01","startHours":18.50272141831248,"endHours":19.021364242694574,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.25272141831248,"endHours":20.00272141831248,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:42","startHours":23.86409326622167,"endHours":24.69392178523302,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:03","end":"07:37","startHours":6.05529363314221,"endHours":7.611222106288493,"quality":"inauspicious"},{"name":"Chala","start":"07:37","end":"09:10","startHours":7.611222106288493,"endHours":9.167150579434777,"quality":"neutral"},{"name":"Labha","start":"09:10","end":"10:43","startHours":9.167150579434777,"endHours":10.72307905258106,"quality":"auspicious"},{"name":"Amṛta","start":"10:43","end":"12:17","startHours":10.72307905258106,"endHours":12.279007525727344,"quality":"auspicious"},{"name":"Kāla","start":"12:17","end":"13:50","startHours":12.279007525727344,"endHours":13.834935998873629,"quality":"inauspicious"},{"name":"Śubha","start":"13:50","end":"15:23","startHours":13.834935998873629,"endHours":15.390864472019912,"quality":"auspicious"},{"name":"Roga","start":"15:23","end":"16:57","startHours":15.390864472019912,"endHours":16.946792945166194,"quality":"inauspicious"},{"name":"Udveg","start":"16:57","end":"18:30","startHours":16.946792945166194,"endHours":18.50272141831248,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:30","end":"19:57","startHours":18.50272141831248,"endHours":19.946792945166194,"quality":"auspicious"},{"name":"Roga","start":"19:57","end":"21:23","startHours":19.946792945166194,"endHours":21.390864472019913,"quality":"inauspicious"},{"name":"Udveg","start":"21:23","end":"22:50","startHours":21.390864472019913,"endHours":22.83493599887363,"quality":"inauspicious"},{"name":"Chala","start":"22:50","end":"00:17","startHours":22.83493599887363,"endHours":24.279007525727344,"quality":"neutral"},{"name":"Labha","start":"00:17","end":"01:43","startHours":24.279007525727344,"endHours":25.72307905258106,"quality":"auspicious"},{"name":"Amṛta","start":"01:43","end":"03:10","startHours":25.72307905258106,"endHours":27.167150579434775,"quality":"auspicious"},{"name":"Kāla","start":"03:10","end":"04:37","startHours":27.167150579434775,"endHours":28.611222106288494,"quality":"inauspicious"},{"name":"Śubha","start":"04:37","end":"06:03","startHours":28.611222106288494,"endHours":30.05529363314221,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:03","end":"07:03","startHours":6.05529363314221,"endHours":7.05529363314221,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:03","end":"08:03","startHours":7.05529363314221,"endHours":8.05529363314221,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:03","end":"09:03","startHours":8.05529363314221,"endHours":9.05529363314221,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:03","end":"10:03","startHours":9.05529363314221,"endHours":10.05529363314221,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:03","end":"11:03","startHours":10.05529363314221,"endHours":11.05529363314221,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:03","end":"12:03","startHours":11.05529363314221,"endHours":12.05529363314221,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:03","end":"13:03","startHours":12.05529363314221,"endHours":13.05529363314221,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:03","end":"14:03","startHours":13.05529363314221,"endHours":14.05529363314221,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:03","end":"15:03","startHours":14.05529363314221,"endHours":15.05529363314221,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:03","end":"16:03","startHours":15.05529363314221,"endHours":16.05529363314221,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:03","end":"17:03","startHours":16.05529363314221,"endHours":17.05529363314221,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:03","end":"18:03","startHours":17.05529363314221,"endHours":18.05529363314221,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:03","end":"19:03","startHours":18.05529363314221,"endHours":19.05529363314221,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:03","end":"20:03","startHours":19.05529363314221,"endHours":20.05529363314221,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:03","end":"21:03","startHours":20.05529363314221,"endHours":21.05529363314221,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:03","end":"22:03","startHours":21.05529363314221,"endHours":22.05529363314221,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:03","end":"23:03","startHours":22.05529363314221,"endHours":23.05529363314221,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:03","end":"00:03","startHours":23.05529363314221,"endHours":24.05529363314221,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:03","end":"01:03","startHours":24.05529363314221,"endHours":25.05529363314221,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:03","end":"02:03","startHours":25.05529363314221,"endHours":26.05529363314221,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:03","end":"03:03","startHours":26.05529363314221,"endHours":27.05529363314221,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:03","end":"04:03","startHours":27.05529363314221,"endHours":28.05529363314221,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:03","end":"05:03","startHours":28.05529363314221,"endHours":29.05529363314221,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:03","end":"06:03","startHours":29.05529363314221,"endHours":30.05529363314221,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.490153992621977,"eotMinutes":-6.185251543640582,"ayanamsa":23.5955}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","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 July 26, 1981 CE · Colombo, Sri Lanka · Vidhyamitra","description":"July 26, 1981 CE for Colombo, Sri Lanka: Kṛṣṇa Daśamī, sūryodaya 06:03, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/1981-07-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/1981-07-26","sa":"https://sa.vidhyamitra.com/city/colombo/1981-07-26","hi":"https://hi.vidhyamitra.com/city/colombo/1981-07-26","x-default":"https://vidhyamitra.com/city/colombo/1981-07-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T06:45:28.164Z","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":"2026-06-02T06:45:28.164Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T06:45:28.164Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}