{"id":"vidhyamitra:city-day:howrah:1981-02-05:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/1981-02-05","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-05","date_display":"February 5, 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":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444640.770833,"kali_year":5082,"ahargana":1856175.2708,"sun":{"sidereal_longitude":292.6558,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":292.8181,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.1623,"elapsed_within_tithi_degrees":0.1623},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.8181,"elapsed_within_degrees":12.8181},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":225.4739},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":5,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444640.770833,"ahargana":1856175.2708,"kali_year":5082,"ayanamsa_lahiri":23.5889,"grahas":{"sun":{"sidereal_longitude":292.56680300000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":294.020003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":-0.1503},"mars":{"sidereal_longitude":305.20120299999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":310.573903,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.65470300000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":277.68080299999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.703803,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.9016,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.9016,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":2,"day":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444640.770833,"kali_year":5082,"ahargana":1856175.2708,"sun":{"sidereal_longitude":292.6558,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":292.8181,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":0.1623,"elapsed_within_tithi_degrees":0.1623},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.8181,"elapsed_within_degrees":12.8181},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":225.4739},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.15,"opposition_distance":179.838}},"eclipse_window_40days":[{"offset_days":-16,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":0,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"06:15","sunsetLocal":"17:28","solarNoonLocal":"11:51","dayLengthHours":11.21254409104764,"dayLengthDisplay":"11 Hours 12 Mins 45 Secs","nightLengthDisplay":"12 Hours 47 Mins 15 Secs","moonriseLocal":"06:21","moonsetLocal":"17:33","rahuKala":{"name":"Rāhu Kāla","start":"13:15","end":"14:39","startHours":13.253994981728747,"endHours":14.655562993109701,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:15","end":"07:39","startHours":6.246154924823972,"endHours":7.647722936204927,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:03","end":"10:27","startHours":9.049290947585881,"endHours":10.450858958966837,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:14","startHours":8.862415212735087,"endHours":9.236166682436675,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:43","end":"07:01","startHours":6.713344261950957,"endHours":7.012345437712227,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:29","end":"12:14","startHours":11.478675500646204,"endHours":12.226178440049381,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:45","end":"05:30","startHours":4.75114904601762,"endHours":5.498651985420796,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:19","end":"06:15","startHours":5.311776250570002,"endHours":6.246154924823972,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:43","end":"14:28","startHours":13.721184318855732,"endHours":14.468687258258909,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:16","end":"17:40","startHours":17.258699015871613,"endHours":17.658699015871612,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:28","end":"17:56","startHours":17.458699015871613,"endHours":17.925888352998598,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:13","end":"18:58","startHours":17.208699015871613,"endHours":18.958699015871613,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:29","end":"00:14","startHours":23.478675500646204,"endHours":24.22617844004938,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:15","end":"07:39","startHours":6.246154924823972,"endHours":7.647722936204927,"quality":"auspicious"},{"name":"Roga","start":"07:39","end":"09:03","startHours":7.647722936204927,"endHours":9.049290947585881,"quality":"inauspicious"},{"name":"Udveg","start":"09:03","end":"10:27","startHours":9.049290947585881,"endHours":10.450858958966837,"quality":"inauspicious"},{"name":"Chala","start":"10:27","end":"11:51","startHours":10.450858958966837,"endHours":11.852426970347793,"quality":"neutral"},{"name":"Labha","start":"11:51","end":"13:15","startHours":11.852426970347793,"endHours":13.253994981728747,"quality":"auspicious"},{"name":"Amṛta","start":"13:15","end":"14:39","startHours":13.253994981728747,"endHours":14.655562993109701,"quality":"auspicious"},{"name":"Kāla","start":"14:39","end":"16:03","startHours":14.655562993109701,"endHours":16.057131004490657,"quality":"inauspicious"},{"name":"Śubha","start":"16:03","end":"17:28","startHours":16.057131004490657,"endHours":17.458699015871613,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:28","end":"19:03","startHours":17.458699015871613,"endHours":19.057131004490657,"quality":"auspicious"},{"name":"Kāla","start":"19:03","end":"20:39","startHours":19.057131004490657,"endHours":20.655562993109704,"quality":"inauspicious"},{"name":"Śubha","start":"20:39","end":"22:15","startHours":20.655562993109704,"endHours":22.25399498172875,"quality":"auspicious"},{"name":"Roga","start":"22:15","end":"23:51","startHours":22.25399498172875,"endHours":23.852426970347793,"quality":"inauspicious"},{"name":"Udveg","start":"23:51","end":"01:27","startHours":23.852426970347793,"endHours":25.450858958966837,"quality":"inauspicious"},{"name":"Chala","start":"01:27","end":"03:03","startHours":25.450858958966837,"endHours":27.04929094758588,"quality":"neutral"},{"name":"Labha","start":"03:03","end":"04:39","startHours":27.04929094758588,"endHours":28.64772293620493,"quality":"auspicious"},{"name":"Amṛta","start":"04:39","end":"06:15","startHours":28.64772293620493,"endHours":30.246154924823973,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:15","end":"07:15","startHours":6.246154924823972,"endHours":7.246154924823972,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:15","end":"08:15","startHours":7.246154924823972,"endHours":8.246154924823973,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:15","end":"09:15","startHours":8.246154924823973,"endHours":9.246154924823973,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:15","end":"10:15","startHours":9.246154924823973,"endHours":10.246154924823973,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:15","end":"11:15","startHours":10.246154924823973,"endHours":11.246154924823973,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:15","end":"12:15","startHours":11.246154924823973,"endHours":12.246154924823973,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:15","end":"13:15","startHours":12.246154924823973,"endHours":13.246154924823973,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:15","end":"14:15","startHours":13.246154924823973,"endHours":14.246154924823973,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:15","end":"15:15","startHours":14.246154924823973,"endHours":15.246154924823973,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:15","end":"16:15","startHours":15.246154924823973,"endHours":16.246154924823973,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:15","end":"17:15","startHours":16.246154924823973,"endHours":17.246154924823973,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:15","end":"18:15","startHours":17.246154924823973,"endHours":18.246154924823973,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:15","end":"19:15","startHours":18.246154924823973,"endHours":19.246154924823973,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:15","end":"20:15","startHours":19.246154924823973,"endHours":20.246154924823973,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:15","end":"21:15","startHours":20.246154924823973,"endHours":21.246154924823973,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:15","end":"22:15","startHours":21.246154924823973,"endHours":22.246154924823973,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:15","end":"23:15","startHours":22.246154924823973,"endHours":23.246154924823973,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:15","end":"00:15","startHours":23.246154924823973,"endHours":24.246154924823973,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:15","end":"01:15","startHours":24.246154924823973,"endHours":25.246154924823973,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:15","end":"02:15","startHours":25.246154924823973,"endHours":26.246154924823973,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:15","end":"03:15","startHours":26.246154924823973,"endHours":27.246154924823973,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:15","end":"04:15","startHours":27.246154924823973,"endHours":28.246154924823973,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:15","end":"05:15","startHours":28.246154924823973,"endHours":29.246154924823973,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:15","end":"06:15","startHours":29.246154924823973,"endHours":30.246154924823973,"planetary_lord":"Moon"}],"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","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-15.992389209472162,"eotMinutes":-14.200018220867548,"ayanamsa":23.5889}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"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 Pratipada · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"magha-gupta-navratri-start","name":"Māgha Gupta Navrātri Start","name_sanskrit":"माघ गुप्त नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī (10 Mahāvidyās)","significance":"Hidden (gupta) Navrātri for advanced sādhanā of 10 Mahāvidyās.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":3}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 February 5, 1981 CE · Howrah, West Bengal · Vidhyamitra","description":"February 5, 1981 CE for Howrah, West Bengal: Śukla Pratipada, sūryodaya 06:15, sūryāsta 17:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/1981-02-05","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/1981-02-05","sa":"https://sa.vidhyamitra.com/city/howrah/1981-02-05","hi":"https://hi.vidhyamitra.com/city/howrah/1981-02-05","x-default":"https://vidhyamitra.com/city/howrah/1981-02-05"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T00:09:37.251Z","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":"2026-05-31T00:09:37.251Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T00:09:37.251Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}