{"id":"vidhyamitra:city-day:colombo:2012-05-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2012-05-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-05-04","date_display":"May 4, 2012 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":2012,"month":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456051.770833,"kali_year":5114,"ahargana":1867586.2708,"sun":{"sidereal_longitude":19.9744,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":171.2832,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.3087,"elapsed_within_tithi_degrees":7.3087},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":171.2832,"elapsed_within_degrees":11.2832},"yoga":{"number":15,"name":"Vajra","sum_longitude":191.2576},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":2012,"month":5,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456051.770833,"ahargana":1867586.2708,"kali_year":5114,"ayanamsa_lahiri":24.0254,"grahas":{"sun":{"sidereal_longitude":19.959419000000025,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":170.09151900000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false,"latitude":-3.6853},"mars":{"sidereal_longitude":131.684619,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":357.121819,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":26.676018999999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":57.482819000000006,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":180.54951900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":226.2919,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":46.2919,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2012,"month":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456051.770833,"kali_year":5114,"ahargana":1867586.2708,"sun":{"sidereal_longitude":19.9744,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":171.2832,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":151.3087,"elapsed_within_tithi_degrees":7.3087},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":171.2832,"elapsed_within_degrees":11.2832},"yoga":{"number":15,"name":"Vajra","sum_longitude":191.2576},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.685,"elongation":151.309},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.685,"opposition_distance":28.691}},"eclipse_window_40days":[{"offset_days":17,"type":"solar","occurs":true,"moon_latitude":0.597,"elongation":1.466}]},"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":"05:56","sunsetLocal":"18:19","solarNoonLocal":"12:07","dayLengthHours":12.383309759649412,"dayLengthDisplay":"12 Hours 23 Mins 00 Secs","nightLengthDisplay":"11 Hours 37 Mins 00 Secs","moonriseLocal":"16:08","moonsetLocal":"04:07","rahuKala":{"name":"Rāhu Kāla","start":"10:34","end":"12:07","startHours":10.573698653075828,"endHours":12.121612373032004,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:13","end":"16:46","startHours":15.217439812944358,"endHours":16.765353532900534,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:29","end":"09:02","startHours":7.477871213163476,"endHours":9.025784933119652,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:49","end":"09:14","startHours":8.819396437125494,"endHours":9.232173429113809,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:27","end":"06:47","startHours":6.445928733192691,"endHours":6.776150326783342,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:32","startHours":11.708835381043691,"endHours":12.534389365020317,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:17","end":"05:06","startHours":4.278849525254044,"endHours":5.104403509230671,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:54","end":"05:56","startHours":4.898015013236515,"endHours":5.929957493207299,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:01","startHours":14.185497332973574,"endHours":15.011051316950201,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:07","end":"18:31","startHours":18.113267252856712,"endHours":18.51326725285671,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:19","end":"18:50","startHours":18.31326725285671,"endHours":18.829238492842105,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:04","end":"19:49","startHours":18.06326725285671,"endHours":19.81326725285671,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:32","startHours":23.70883538104369,"endHours":24.534389365020317,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:56","end":"07:29","startHours":5.929957493207299,"endHours":7.477871213163476,"quality":"neutral"},{"name":"Labha","start":"07:29","end":"09:02","startHours":7.477871213163476,"endHours":9.025784933119652,"quality":"auspicious"},{"name":"Amṛta","start":"09:02","end":"10:34","startHours":9.025784933119652,"endHours":10.573698653075828,"quality":"auspicious"},{"name":"Kāla","start":"10:34","end":"12:07","startHours":10.573698653075828,"endHours":12.121612373032004,"quality":"inauspicious"},{"name":"Śubha","start":"12:07","end":"13:40","startHours":12.121612373032004,"endHours":13.669526092988182,"quality":"auspicious"},{"name":"Roga","start":"13:40","end":"15:13","startHours":13.669526092988182,"endHours":15.217439812944358,"quality":"inauspicious"},{"name":"Udveg","start":"15:13","end":"16:46","startHours":15.217439812944358,"endHours":16.765353532900534,"quality":"inauspicious"},{"name":"Chala","start":"16:46","end":"18:19","startHours":16.765353532900534,"endHours":18.31326725285671,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:19","end":"19:46","startHours":18.31326725285671,"endHours":19.765353532900534,"quality":"inauspicious"},{"name":"Udveg","start":"19:46","end":"21:13","startHours":19.765353532900534,"endHours":21.21743981294436,"quality":"inauspicious"},{"name":"Chala","start":"21:13","end":"22:40","startHours":21.21743981294436,"endHours":22.669526092988182,"quality":"neutral"},{"name":"Labha","start":"22:40","end":"00:07","startHours":22.669526092988182,"endHours":24.121612373032004,"quality":"auspicious"},{"name":"Amṛta","start":"00:07","end":"01:34","startHours":24.121612373032004,"endHours":25.57369865307583,"quality":"auspicious"},{"name":"Kāla","start":"01:34","end":"03:02","startHours":25.57369865307583,"endHours":27.025784933119652,"quality":"inauspicious"},{"name":"Śubha","start":"03:02","end":"04:29","startHours":27.025784933119652,"endHours":28.477871213163475,"quality":"auspicious"},{"name":"Roga","start":"04:29","end":"05:56","startHours":28.477871213163475,"endHours":29.929957493207297,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.929957493207299,"endHours":6.929957493207299,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.929957493207299,"endHours":7.929957493207299,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.929957493207299,"endHours":8.929957493207299,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.929957493207299,"endHours":9.929957493207299,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.929957493207299,"endHours":10.929957493207299,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.929957493207299,"endHours":11.929957493207299,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.929957493207299,"endHours":12.929957493207299,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.929957493207299,"endHours":13.929957493207299,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.929957493207299,"endHours":14.929957493207299,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.929957493207299,"endHours":15.929957493207299,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.929957493207299,"endHours":16.929957493207297,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.929957493207297,"endHours":17.929957493207297,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.929957493207297,"endHours":18.929957493207297,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.929957493207297,"endHours":19.929957493207297,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.929957493207297,"endHours":20.929957493207297,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.929957493207297,"endHours":21.929957493207297,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.929957493207297,"endHours":22.929957493207297,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.929957493207297,"endHours":23.929957493207297,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.929957493207297,"endHours":24.929957493207297,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.929957493207297,"endHours":25.929957493207297,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.929957493207297,"endHours":26.929957493207297,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.929957493207297,"endHours":27.929957493207297,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.929957493207297,"endHours":28.929957493207297,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.929957493207297,"endHours":29.929957493207297,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"South-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":16.034276396006398,"eotMinutes":3.258457618079846,"ayanamsa":24.0254}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Trayodaśī · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 4, 2012 CE · Colombo, Sri Lanka · Vidhyamitra","description":"May 4, 2012 CE for Colombo, Sri Lanka: Śukla Trayodaśī, sūryodaya 05:56, sūryāsta 18:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2012-05-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2012-05-04","sa":"https://sa.vidhyamitra.com/city/colombo/2012-05-04","hi":"https://hi.vidhyamitra.com/city/colombo/2012-05-04","x-default":"https://vidhyamitra.com/city/colombo/2012-05-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T16:42:08.890Z","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":"2026-05-15T16:42:08.890Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T16:42:08.890Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}