{"id":"vidhyamitra:city-day:colombo:1998-01-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/1998-01-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-01-07","date_display":"January 7, 1998 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":1998,"month":1,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450820.770833,"kali_year":5099,"ahargana":1862355.2708,"sun":{"sidereal_longitude":262.527,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":11.0803,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":108.5533,"elapsed_within_tithi_degrees":0.5533},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":11.0803,"elapsed_within_degrees":11.0803},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.6073},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1998,"month":1,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450820.770833,"ahargana":1862355.2708,"kali_year":5099,"ayanamsa_lahiri":23.8253,"grahas":{"sun":{"sidereal_longitude":262.70338100000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":11.452480999999977,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":-3.3228},"mars":{"sidereal_longitude":291.71738099999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":239.601181,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":299.69098099999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":277.53348099999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"saturn":{"sidereal_longitude":350.103581,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":143.4555,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":323.4555,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1998,"month":1,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450820.770833,"kali_year":5099,"ahargana":1862355.2708,"sun":{"sidereal_longitude":262.527,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":11.0803,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":108.5533,"elapsed_within_tithi_degrees":0.5533},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":11.0803,"elapsed_within_degrees":11.0803},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.6073},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.323,"elongation":108.553},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.323,"opposition_distance":71.447}},"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":"06:25","sunsetLocal":"18:09","solarNoonLocal":"12:17","dayLengthHours":11.738153054812933,"dayLengthDisplay":"11 Hours 44 Mins 17 Secs","nightLengthDisplay":"12 Hours 15 Mins 43 Secs","moonriseLocal":"13:23","moonsetLocal":"01:41","rahuKala":{"name":"Rāhu Kāla","start":"12:17","end":"13:45","startHours":12.280787905123663,"endHours":13.74805703697528,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:53","end":"09:21","startHours":7.878980509568814,"endHours":9.346249641420432,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:49","end":"12:17","startHours":10.813518773272047,"endHours":12.280787905123663,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:09","end":"09:33","startHours":9.150613757173549,"endHours":9.541885525667313,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:54","end":"07:13","startHours":6.900801088334403,"endHours":7.213818503129415,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:40","startHours":11.889516136629899,"endHours":12.672059673617428,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:51","end":"05:38","startHours":4.846624303742139,"endHours":5.629167840729669,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:26","end":"06:25","startHours":5.433531956482787,"endHours":6.4117113777171975,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"15:01","startHours":14.237146747592487,"endHours":15.019690284580015,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:57","end":"18:21","startHours":17.94986443253013,"endHours":18.34986443253013,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:09","end":"18:38","startHours":18.14986443253013,"endHours":18.638954143147334,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:54","end":"19:39","startHours":17.89986443253013,"endHours":19.64986443253013,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:40","startHours":23.889516136629897,"endHours":24.67205967361743,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:25","end":"07:53","startHours":6.4117113777171975,"endHours":7.878980509568814,"quality":"auspicious"},{"name":"Amṛta","start":"07:53","end":"09:21","startHours":7.878980509568814,"endHours":9.346249641420432,"quality":"auspicious"},{"name":"Kāla","start":"09:21","end":"10:49","startHours":9.346249641420432,"endHours":10.813518773272047,"quality":"inauspicious"},{"name":"Śubha","start":"10:49","end":"12:17","startHours":10.813518773272047,"endHours":12.280787905123663,"quality":"auspicious"},{"name":"Roga","start":"12:17","end":"13:45","startHours":12.280787905123663,"endHours":13.74805703697528,"quality":"inauspicious"},{"name":"Udveg","start":"13:45","end":"15:13","startHours":13.74805703697528,"endHours":15.215326168826898,"quality":"inauspicious"},{"name":"Chala","start":"15:13","end":"16:41","startHours":15.215326168826898,"endHours":16.682595300678514,"quality":"neutral"},{"name":"Labha","start":"16:41","end":"18:09","startHours":16.682595300678514,"endHours":18.14986443253013,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:09","end":"19:41","startHours":18.14986443253013,"endHours":19.682595300678514,"quality":"inauspicious"},{"name":"Chala","start":"19:41","end":"21:13","startHours":19.682595300678514,"endHours":21.2153261688269,"quality":"neutral"},{"name":"Labha","start":"21:13","end":"22:45","startHours":21.2153261688269,"endHours":22.74805703697528,"quality":"auspicious"},{"name":"Amṛta","start":"22:45","end":"00:17","startHours":22.74805703697528,"endHours":24.280787905123663,"quality":"auspicious"},{"name":"Kāla","start":"00:17","end":"01:49","startHours":24.280787905123663,"endHours":25.813518773272047,"quality":"inauspicious"},{"name":"Śubha","start":"01:49","end":"03:21","startHours":25.813518773272047,"endHours":27.346249641420428,"quality":"auspicious"},{"name":"Roga","start":"03:21","end":"04:53","startHours":27.346249641420428,"endHours":28.878980509568812,"quality":"inauspicious"},{"name":"Udveg","start":"04:53","end":"06:25","startHours":28.878980509568812,"endHours":30.411711377717197,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.4117113777171975,"endHours":7.4117113777171975,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.4117113777171975,"endHours":8.411711377717197,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.411711377717197,"endHours":9.411711377717197,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.411711377717197,"endHours":10.411711377717197,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.411711377717197,"endHours":11.411711377717197,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.411711377717197,"endHours":12.411711377717197,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.411711377717197,"endHours":13.411711377717197,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.411711377717197,"endHours":14.411711377717197,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.411711377717197,"endHours":15.411711377717197,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.411711377717197,"endHours":16.411711377717197,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.411711377717197,"endHours":17.411711377717197,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.411711377717197,"endHours":18.411711377717197,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.411711377717197,"endHours":19.411711377717197,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.411711377717197,"endHours":20.411711377717197,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.411711377717197,"endHours":21.411711377717197,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.411711377717197,"endHours":22.411711377717197,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.411711377717197,"endHours":23.411711377717197,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.411711377717197,"endHours":24.411711377717197,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.411711377717197,"endHours":25.411711377717197,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.411711377717197,"endHours":26.411711377717197,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.411711377717197,"endHours":27.411711377717197,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.411711377717197,"endHours":28.411711377717197,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.411711377717197,"endHours":29.411711377717197,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.411711377717197,"endHours":30.411711377717197,"planetary_lord":"Sun"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.414053590060885,"eotMinutes":-6.292074307419696,"ayanamsa":23.8253}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Daśamī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 January 7, 1998 CE · Colombo, Sri Lanka · Vidhyamitra","description":"January 7, 1998 CE for Colombo, Sri Lanka: Śukla Daśamī, sūryodaya 06:25, sūryāsta 18:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/1998-01-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/1998-01-07","sa":"https://sa.vidhyamitra.com/city/colombo/1998-01-07","hi":"https://hi.vidhyamitra.com/city/colombo/1998-01-07","x-default":"https://vidhyamitra.com/city/colombo/1998-01-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T18:44:54.968Z","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":"2026-06-01T18:44:54.968Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T18:44:54.968Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}