{"id":"vidhyamitra:city-day:howrah:1979-12-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/1979-12-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-12-01","date_display":"December 1, 1979 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":1979,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444208.770833,"kali_year":5081,"ahargana":1855743.2708,"sun":{"sidereal_longitude":224.2105,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.7669,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.5564,"elapsed_within_tithi_degrees":2.5564},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.7669,"elapsed_within_degrees":10.7669},"yoga":{"number":18,"name":"Varīyān","sum_longitude":234.9773},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1979,"month":12,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444208.770833,"ahargana":1855743.2708,"kali_year":5081,"ayanamsa_lahiri":23.5724,"grahas":{"sun":{"sidereal_longitude":224.666108,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":9.474708000000021,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":-3.7718},"mars":{"sidereal_longitude":131.47060799999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":206.48940800000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":135.405508,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":249.779408,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":152.03510800000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":133.791,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":313.791,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1979,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444208.770833,"kali_year":5081,"ahargana":1855743.2708,"sun":{"sidereal_longitude":224.2105,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":10.7669,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.5564,"elapsed_within_tithi_degrees":2.5564},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.7669,"elapsed_within_degrees":10.7669},"yoga":{"number":18,"name":"Varīyān","sum_longitude":234.9773},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.772,"elongation":146.556},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.772,"opposition_distance":33.444}},"eclipse_window_40days":[]},"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":"06:01","sunsetLocal":"16:53","solarNoonLocal":"11:27","dayLengthHours":10.861452840651388,"dayLengthDisplay":"10 Hours 51 Mins 41 Secs","nightLengthDisplay":"13 Hours 08 Mins 19 Secs","moonriseLocal":"14:42","moonsetLocal":"03:30","rahuKala":{"name":"Rāhu Kāla","start":"08:44","end":"10:05","startHours":8.731545946497146,"endHours":10.089227551578569,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:48","end":"14:10","startHours":12.804590761741416,"endHours":14.16227236682284,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:01","end":"07:22","startHours":6.016182736334298,"endHours":7.373864341415722,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:55","startHours":8.550521732486288,"endHours":8.912570160508002,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:46","startHours":6.468743271361439,"endHours":6.758382013778809,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:05","end":"11:49","startHours":11.084860728638278,"endHours":11.808957584681705,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:34","end":"05:18","startHours":4.567989024247447,"endHours":5.292085880290872,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:01","startHours":5.1110616662800155,"endHours":6.016182736334298,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:15","end":"13:59","startHours":13.257151296768557,"endHours":13.981248152811983,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:41","end":"17:05","startHours":16.677635576985686,"endHours":17.077635576985685,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:53","end":"17:20","startHours":16.877635576985686,"endHours":17.33019611201283,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:38","end":"18:23","startHours":16.627635576985686,"endHours":18.377635576985686,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:05","end":"23:49","startHours":23.08486072863828,"endHours":23.808957584681703,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:01","end":"07:22","startHours":6.016182736334298,"endHours":7.373864341415722,"quality":"inauspicious"},{"name":"Śubha","start":"07:22","end":"08:44","startHours":7.373864341415722,"endHours":8.731545946497146,"quality":"auspicious"},{"name":"Roga","start":"08:44","end":"10:05","startHours":8.731545946497146,"endHours":10.089227551578569,"quality":"inauspicious"},{"name":"Udveg","start":"10:05","end":"11:27","startHours":10.089227551578569,"endHours":11.446909156659991,"quality":"inauspicious"},{"name":"Chala","start":"11:27","end":"12:48","startHours":11.446909156659991,"endHours":12.804590761741416,"quality":"neutral"},{"name":"Labha","start":"12:48","end":"14:10","startHours":12.804590761741416,"endHours":14.16227236682284,"quality":"auspicious"},{"name":"Amṛta","start":"14:10","end":"15:31","startHours":14.16227236682284,"endHours":15.519953971904261,"quality":"auspicious"},{"name":"Kāla","start":"15:31","end":"16:53","startHours":15.519953971904261,"endHours":16.877635576985686,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"16:53","end":"18:31","startHours":16.877635576985686,"endHours":18.51995397190426,"quality":"auspicious"},{"name":"Amṛta","start":"18:31","end":"20:10","startHours":18.51995397190426,"endHours":20.16227236682284,"quality":"auspicious"},{"name":"Kāla","start":"20:10","end":"21:48","startHours":20.16227236682284,"endHours":21.804590761741416,"quality":"inauspicious"},{"name":"Śubha","start":"21:48","end":"23:27","startHours":21.804590761741416,"endHours":23.44690915665999,"quality":"auspicious"},{"name":"Roga","start":"23:27","end":"01:05","startHours":23.44690915665999,"endHours":25.089227551578567,"quality":"inauspicious"},{"name":"Udveg","start":"01:05","end":"02:44","startHours":25.089227551578567,"endHours":26.731545946497143,"quality":"inauspicious"},{"name":"Chala","start":"02:44","end":"04:22","startHours":26.731545946497143,"endHours":28.37386434141572,"quality":"neutral"},{"name":"Labha","start":"04:22","end":"06:01","startHours":28.37386434141572,"endHours":30.016182736334297,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.016182736334298,"endHours":7.016182736334298,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.016182736334298,"endHours":8.016182736334297,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.016182736334297,"endHours":9.016182736334297,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.016182736334297,"endHours":10.016182736334297,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.016182736334297,"endHours":11.016182736334297,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.016182736334297,"endHours":12.016182736334297,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.016182736334297,"endHours":13.016182736334297,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.016182736334297,"endHours":14.016182736334297,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.016182736334297,"endHours":15.016182736334297,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.016182736334297,"endHours":16.016182736334297,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.016182736334297,"endHours":17.016182736334297,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.016182736334297,"endHours":18.016182736334297,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.016182736334297,"endHours":19.016182736334297,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.016182736334297,"endHours":20.016182736334297,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.016182736334297,"endHours":21.016182736334297,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.016182736334297,"endHours":22.016182736334297,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.016182736334297,"endHours":23.016182736334297,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.016182736334297,"endHours":24.016182736334297,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.016182736334297,"endHours":25.016182736334297,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.016182736334297,"endHours":26.016182736334297,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.016182736334297,"endHours":27.016182736334297,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.016182736334297,"endHours":28.016182736334297,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.016182736334297,"endHours":29.016182736334297,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.016182736334297,"endHours":30.016182736334297,"planetary_lord":"Mercury"}],"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":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.677887306150744,"eotMinutes":10.131050600400467,"ayanamsa":23.5724}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Trayodaśī · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"festivals":[{"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":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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":"howrah"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 1, 1979 CE · Howrah, West Bengal · Vidhyamitra","description":"December 1, 1979 CE for Howrah, West Bengal: Śukla Trayodaśī, sūryodaya 06:01, sūryāsta 16:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/1979-12-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/1979-12-01","sa":"https://sa.vidhyamitra.com/city/howrah/1979-12-01","hi":"https://hi.vidhyamitra.com/city/howrah/1979-12-01","x-default":"https://vidhyamitra.com/city/howrah/1979-12-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T05:28:37.325Z","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":"2026-06-01T05:28:37.325Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T05:28:37.325Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}