{"id":"vidhyamitra:city-day:howrah:1990-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/1990-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-01-30","date_display":"January 30, 1990 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":1990,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447921.770833,"kali_year":5091,"ahargana":1859456.2708,"sun":{"sidereal_longitude":286.1926,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":326.2715,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.0789,"elapsed_within_tithi_degrees":4.0789},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":326.2715,"elapsed_within_degrees":6.2715},"yoga":{"number":19,"name":"Parigha","sum_longitude":252.4641},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1990,"month":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447921.770833,"ahargana":1859456.2708,"kali_year":5091,"ayanamsa_lahiri":23.7144,"grahas":{"sun":{"sidereal_longitude":286.16614400000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":327.11434399999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false,"latitude":2.1945},"mars":{"sidereal_longitude":246.75044400000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":261.19594400000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":68.339944,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":268.960544,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":265.05504399999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":297.0584,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":117.0584,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"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":1990,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447921.770833,"kali_year":5091,"ahargana":1859456.2708,"sun":{"sidereal_longitude":286.1926,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":326.2715,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":40.0789,"elapsed_within_tithi_degrees":4.0789},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":326.2715,"elapsed_within_degrees":6.2715},"yoga":{"number":19,"name":"Parigha","sum_longitude":252.4641},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.195,"elongation":40.079},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.195,"opposition_distance":139.921}},"eclipse_window_40days":[{"offset_days":-3,"type":"solar","occurs":true,"moon_latitude":-0.956,"elongation":1.82}]},"city":{"slug":"howrah","name":"Howrah, West Bengal","lat":22.5958,"lon":88.2636,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"howrah","name":"Howrah, West Bengal","lat":22.5958,"lon":88.2636,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"sunriseLocal":"06:17","sunsetLocal":"17:23","solarNoonLocal":"11:50","dayLengthHours":11.105283932524342,"dayLengthDisplay":"11 Hours 06 Mins 19 Secs","nightLengthDisplay":"12 Hours 53 Mins 41 Secs","moonriseLocal":"08:38","moonsetLocal":"20:31","rahuKala":{"name":"Rāhu Kāla","start":"14:37","end":"16:00","startHours":14.614700082727161,"endHours":16.002860574292704,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:04","end":"10:27","startHours":9.062058116464991,"endHours":10.450218608030532,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:50","end":"13:14","startHours":11.838379099596075,"endHours":13.226539591161618,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:15","startHours":8.876970050922917,"endHours":9.247146182007063,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:45","end":"07:03","startHours":6.748457297189086,"endHours":7.0445982020564015,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:28","end":"12:13","startHours":11.46820296851193,"endHours":12.20855523068022,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:48","end":"05:33","startHours":4.805032608997326,"endHours":5.5453848711656155,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:22","end":"06:17","startHours":5.360296805623543,"endHours":6.285737133333905,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:41","end":"14:26","startHours":13.6892597550168,"endHours":14.42961201718509,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:11","end":"17:35","startHours":17.191021065858248,"endHours":17.591021065858246,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:23","end":"17:51","startHours":17.391021065858247,"endHours":17.853741229713428,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:08","end":"18:53","startHours":17.141021065858247,"endHours":18.891021065858247,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:28","end":"00:13","startHours":23.46820296851193,"endHours":24.20855523068022,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:17","end":"07:40","startHours":6.285737133333905,"endHours":7.673897624899448,"quality":"inauspicious"},{"name":"Udveg","start":"07:40","end":"09:04","startHours":7.673897624899448,"endHours":9.062058116464991,"quality":"inauspicious"},{"name":"Chala","start":"09:04","end":"10:27","startHours":9.062058116464991,"endHours":10.450218608030532,"quality":"neutral"},{"name":"Labha","start":"10:27","end":"11:50","startHours":10.450218608030532,"endHours":11.838379099596075,"quality":"auspicious"},{"name":"Amṛta","start":"11:50","end":"13:14","startHours":11.838379099596075,"endHours":13.226539591161618,"quality":"auspicious"},{"name":"Kāla","start":"13:14","end":"14:37","startHours":13.226539591161618,"endHours":14.614700082727161,"quality":"inauspicious"},{"name":"Śubha","start":"14:37","end":"16:00","startHours":14.614700082727161,"endHours":16.002860574292704,"quality":"auspicious"},{"name":"Roga","start":"16:00","end":"17:23","startHours":16.002860574292704,"endHours":17.391021065858247,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:23","end":"19:00","startHours":17.391021065858247,"endHours":19.002860574292704,"quality":"inauspicious"},{"name":"Śubha","start":"19:00","end":"20:37","startHours":19.002860574292704,"endHours":20.61470008272716,"quality":"auspicious"},{"name":"Roga","start":"20:37","end":"22:14","startHours":20.61470008272716,"endHours":22.226539591161618,"quality":"inauspicious"},{"name":"Udveg","start":"22:14","end":"23:50","startHours":22.226539591161618,"endHours":23.838379099596075,"quality":"inauspicious"},{"name":"Chala","start":"23:50","end":"01:27","startHours":23.838379099596075,"endHours":25.450218608030532,"quality":"neutral"},{"name":"Labha","start":"01:27","end":"03:04","startHours":25.450218608030532,"endHours":27.06205811646499,"quality":"auspicious"},{"name":"Amṛta","start":"03:04","end":"04:40","startHours":27.06205811646499,"endHours":28.673897624899446,"quality":"auspicious"},{"name":"Kāla","start":"04:40","end":"06:17","startHours":28.673897624899446,"endHours":30.285737133333903,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:17","end":"07:17","startHours":6.285737133333905,"endHours":7.285737133333905,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:17","end":"08:17","startHours":7.285737133333905,"endHours":8.285737133333905,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:17","end":"09:17","startHours":8.285737133333905,"endHours":9.285737133333905,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:17","end":"10:17","startHours":9.285737133333905,"endHours":10.285737133333905,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:17","end":"11:17","startHours":10.285737133333905,"endHours":11.285737133333905,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:17","end":"12:17","startHours":11.285737133333905,"endHours":12.285737133333905,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:17","end":"13:17","startHours":12.285737133333905,"endHours":13.285737133333905,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:17","end":"14:17","startHours":13.285737133333905,"endHours":14.285737133333905,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:17","end":"15:17","startHours":14.285737133333905,"endHours":15.285737133333905,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:17","end":"16:17","startHours":15.285737133333905,"endHours":16.285737133333903,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:17","end":"17:17","startHours":16.285737133333903,"endHours":17.285737133333903,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:17","end":"18:17","startHours":17.285737133333903,"endHours":18.285737133333903,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:17","end":"19:17","startHours":18.285737133333903,"endHours":19.285737133333903,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:17","end":"20:17","startHours":19.285737133333903,"endHours":20.285737133333903,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:17","end":"21:17","startHours":20.285737133333903,"endHours":21.285737133333903,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:17","end":"22:17","startHours":21.285737133333903,"endHours":22.285737133333903,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:17","end":"23:17","startHours":22.285737133333903,"endHours":23.285737133333903,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:17","end":"00:17","startHours":23.285737133333903,"endHours":24.285737133333903,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:17","end":"01:17","startHours":24.285737133333903,"endHours":25.285737133333903,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:17","end":"02:17","startHours":25.285737133333903,"endHours":26.285737133333903,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:17","end":"03:17","startHours":26.285737133333903,"endHours":27.285737133333903,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:17","end":"04:17","startHours":27.285737133333903,"endHours":28.285737133333903,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:17","end":"05:17","startHours":28.285737133333903,"endHours":29.285737133333903,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:17","end":"06:17","startHours":29.285737133333903,"endHours":30.285737133333903,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.770984943718474,"eotMinutes":-13.357145975764517,"ayanamsa":23.7144}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":"howrah"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 30, 1990 CE · Howrah, West Bengal · Vidhyamitra","description":"January 30, 1990 CE for Howrah, West Bengal: Śukla Caturthī, sūryodaya 06:17, sūryāsta 17:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/1990-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/1990-01-30","sa":"https://sa.vidhyamitra.com/city/howrah/1990-01-30","hi":"https://hi.vidhyamitra.com/city/howrah/1990-01-30","x-default":"https://vidhyamitra.com/city/howrah/1990-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:07:04.291Z","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":"2026-06-01T01:07:04.291Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:07:04.291Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}