{"id":"vidhyamitra:city-day:colombo:1981-02-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/1981-02-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-23","date_display":"February 23, 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":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444658.770833,"kali_year":5082,"ahargana":1856193.2708,"sun":{"sidereal_longitude":310.9309,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":179.9461,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":229.0152,"elapsed_within_tithi_degrees":1.0152},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":179.9461,"elapsed_within_degrees":6.6127},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":130.8769},"karana":{"half_tithi_index":38,"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":1981,"month":2,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444658.770833,"ahargana":1856193.2708,"kali_year":5082,"ayanamsa_lahiri":23.5896,"grahas":{"sun":{"sidereal_longitude":310.75231499999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":176.99101500000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false,"latitude":4.2281},"mars":{"sidereal_longitude":319.403015,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":299.612715,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":165.54181500000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":300.20581500000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":164.91221500000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":109.9479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":289.9479,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":"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":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444658.770833,"kali_year":5082,"ahargana":1856193.2708,"sun":{"sidereal_longitude":310.9309,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":179.9461,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":229.0152,"elapsed_within_tithi_degrees":1.0152},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":179.9461,"elapsed_within_degrees":6.6127},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":130.8769},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.228,"elongation":130.985},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.228,"opposition_distance":49.015}},"eclipse_window_40days":[{"offset_days":-18,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"06:26","sunsetLocal":"18:23","solarNoonLocal":"12:25","dayLengthHours":11.951309136683044,"dayLengthDisplay":"11 Hours 57 Mins 05 Secs","nightLengthDisplay":"12 Hours 02 Mins 55 Secs","moonriseLocal":"21:31","moonsetLocal":"09:28","rahuKala":{"name":"Rāhu Kāla","start":"07:56","end":"09:25","startHours":7.926984023068249,"endHours":9.420897665153628,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:55","end":"12:25","startHours":10.91481130723901,"endHours":12.408724949324391,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:54","end":"15:24","startHours":13.90263859140977,"endHours":15.39655223349515,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:37","startHours":9.221709179542245,"endHours":9.620086150765013,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:56","end":"07:15","startHours":6.931041595011329,"endHours":7.249743171989543,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:48","startHours":12.010347978101622,"endHours":12.80710192054716,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:50","end":"05:38","startHours":4.839562496091796,"endHours":5.636316438537332,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:26","end":"06:26","startHours":5.437127952925948,"endHours":6.433070380982868,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:12","startHours":14.40060980543823,"endHours":15.197363747883765,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:11","end":"18:35","startHours":18.184379517665914,"endHours":18.584379517665912,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:23","end":"18:53","startHours":18.384379517665913,"endHours":18.882350731694373,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:08","end":"19:53","startHours":18.134379517665913,"endHours":19.884379517665913,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:48","startHours":24.010347978101624,"endHours":24.807101920547158,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:26","end":"07:56","startHours":6.433070380982868,"endHours":7.926984023068249,"quality":"auspicious"},{"name":"Kāla","start":"07:56","end":"09:25","startHours":7.926984023068249,"endHours":9.420897665153628,"quality":"inauspicious"},{"name":"Śubha","start":"09:25","end":"10:55","startHours":9.420897665153628,"endHours":10.91481130723901,"quality":"auspicious"},{"name":"Roga","start":"10:55","end":"12:25","startHours":10.91481130723901,"endHours":12.408724949324391,"quality":"inauspicious"},{"name":"Udveg","start":"12:25","end":"13:54","startHours":12.408724949324391,"endHours":13.90263859140977,"quality":"inauspicious"},{"name":"Chala","start":"13:54","end":"15:24","startHours":13.90263859140977,"endHours":15.39655223349515,"quality":"neutral"},{"name":"Labha","start":"15:24","end":"16:53","startHours":15.39655223349515,"endHours":16.89046587558053,"quality":"auspicious"},{"name":"Amṛta","start":"16:53","end":"18:23","startHours":16.89046587558053,"endHours":18.384379517665913,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:23","end":"19:53","startHours":18.384379517665913,"endHours":19.89046587558053,"quality":"neutral"},{"name":"Labha","start":"19:53","end":"21:24","startHours":19.89046587558053,"endHours":21.39655223349515,"quality":"auspicious"},{"name":"Amṛta","start":"21:24","end":"22:54","startHours":21.39655223349515,"endHours":22.902638591409772,"quality":"auspicious"},{"name":"Kāla","start":"22:54","end":"00:25","startHours":22.902638591409772,"endHours":24.40872494932439,"quality":"inauspicious"},{"name":"Śubha","start":"00:25","end":"01:55","startHours":24.40872494932439,"endHours":25.91481130723901,"quality":"auspicious"},{"name":"Roga","start":"01:55","end":"03:25","startHours":25.91481130723901,"endHours":27.420897665153632,"quality":"inauspicious"},{"name":"Udveg","start":"03:25","end":"04:56","startHours":27.420897665153632,"endHours":28.92698402306825,"quality":"inauspicious"},{"name":"Chala","start":"04:56","end":"06:26","startHours":28.92698402306825,"endHours":30.43307038098287,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:26","end":"07:26","startHours":6.433070380982868,"endHours":7.433070380982868,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:26","end":"08:26","startHours":7.433070380982868,"endHours":8.433070380982869,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:26","end":"09:26","startHours":8.433070380982869,"endHours":9.433070380982869,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:26","end":"10:26","startHours":9.433070380982869,"endHours":10.433070380982869,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:26","end":"11:26","startHours":10.433070380982869,"endHours":11.433070380982869,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:26","end":"12:26","startHours":11.433070380982869,"endHours":12.433070380982869,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:26","end":"13:26","startHours":12.433070380982869,"endHours":13.433070380982869,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:26","end":"14:26","startHours":13.433070380982869,"endHours":14.433070380982869,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:26","end":"15:26","startHours":14.433070380982869,"endHours":15.433070380982869,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:26","end":"16:26","startHours":15.433070380982869,"endHours":16.43307038098287,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:26","end":"17:26","startHours":16.43307038098287,"endHours":17.43307038098287,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:26","end":"18:26","startHours":17.43307038098287,"endHours":18.43307038098287,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:26","end":"19:26","startHours":18.43307038098287,"endHours":19.43307038098287,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:26","end":"20:26","startHours":19.43307038098287,"endHours":20.43307038098287,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:26","end":"21:26","startHours":20.43307038098287,"endHours":21.43307038098287,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:26","end":"22:26","startHours":21.43307038098287,"endHours":22.43307038098287,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:26","end":"23:26","startHours":22.43307038098287,"endHours":23.43307038098287,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:26","end":"00:26","startHours":23.43307038098287,"endHours":24.43307038098287,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:26","end":"01:26","startHours":24.43307038098287,"endHours":25.43307038098287,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:26","end":"02:26","startHours":25.43307038098287,"endHours":26.43307038098287,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:26","end":"03:26","startHours":26.43307038098287,"endHours":27.43307038098287,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:26","end":"04:26","startHours":27.43307038098287,"endHours":28.43307038098287,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:26","end":"05:26","startHours":28.43307038098287,"endHours":29.43307038098287,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:26","end":"06:26","startHours":29.43307038098287,"endHours":30.43307038098287,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.916807370965897,"eotMinutes":-13.968296959463448,"ayanamsa":23.5896}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[]},"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 February 23, 1981 CE · Colombo, Sri Lanka · Vidhyamitra","description":"February 23, 1981 CE for Colombo, Sri Lanka: Kṛṣṇa Pañcamī, sūryodaya 06:26, sūryāsta 18:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/1981-02-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/1981-02-23","sa":"https://sa.vidhyamitra.com/city/colombo/1981-02-23","hi":"https://hi.vidhyamitra.com/city/colombo/1981-02-23","x-default":"https://vidhyamitra.com/city/colombo/1981-02-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:00:50.008Z","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":"2026-06-02T04:00:50.008Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:00:50.008Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}