{"id":"vidhyamitra:city-day:jamnagar:1981-02-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1981-02-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-09","date_display":"February 9, 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":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444644.770833,"kali_year":5082,"ahargana":1856179.2708,"sun":{"sidereal_longitude":296.7316,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":349.1755,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":52.4439,"elapsed_within_tithi_degrees":4.4439},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":349.1755,"elapsed_within_degrees":2.5089},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9071},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444644.770833,"ahargana":1856179.2708,"kali_year":5082,"ayanamsa_lahiri":23.5891,"grahas":{"sun":{"sidereal_longitude":296.61915,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":350.75265,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false,"latitude":-3.8352},"mars":{"sidereal_longitude":308.36175000000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":311.6260500000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.48894999999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":282.68935,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.57065,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.6897,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.6897,"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":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444644.770833,"kali_year":5082,"ahargana":1856179.2708,"sun":{"sidereal_longitude":296.7316,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":349.1755,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":52.4439,"elapsed_within_tithi_degrees":4.4439},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":349.1755,"elapsed_within_degrees":2.5089},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9071},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.835,"elongation":52.444},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.835,"opposition_distance":127.556}},"eclipse_window_40days":[{"offset_days":-20,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"jamnagar","name":"Jamnagar, Gujarat","lat":22.4707,"lon":70.0577,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"sunriseLocal":"07:26","sunsetLocal":"18:43","solarNoonLocal":"13:04","dayLengthHours":11.291552620237226,"dayLengthDisplay":"11 Hours 17 Mins 30 Secs","nightLengthDisplay":"12 Hours 42 Mins 30 Secs","moonriseLocal":"10:29","moonsetLocal":"22:53","rahuKala":{"name":"Rāhu Kāla","start":"08:50","end":"10:15","startHours":8.83687626278757,"endHours":10.248320340317225,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:40","end":"13:04","startHours":11.659764417846876,"endHours":13.071208495376531,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:29","end":"15:54","startHours":14.482652572906183,"endHours":15.894096650435838,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"10:04","end":"10:26","startHours":10.060127796646604,"endHours":10.436512883987845,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:54","end":"08:12","startHours":7.895913544434468,"endHours":8.197021614307461,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:42","end":"13:27","startHours":12.69482340803529,"endHours":13.447593582717772,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:55","end":"06:40","startHours":5.919891835892954,"endHours":6.6726620105754355,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:29","end":"07:26","startHours":6.484469466904815,"endHours":7.425432185257917,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:57","end":"15:42","startHours":14.953133932082736,"endHours":15.705904106765217,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:31","end":"18:55","startHours":18.516984805495145,"endHours":18.916984805495144,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:43","end":"19:11","startHours":18.716984805495144,"endHours":19.187466164671697,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:28","end":"20:13","startHours":18.466984805495144,"endHours":20.216984805495144,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:42","end":"01:27","startHours":24.69482340803529,"endHours":25.447593582717772,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:26","end":"08:50","startHours":7.425432185257917,"endHours":8.83687626278757,"quality":"auspicious"},{"name":"Kāla","start":"08:50","end":"10:15","startHours":8.83687626278757,"endHours":10.248320340317225,"quality":"inauspicious"},{"name":"Śubha","start":"10:15","end":"11:40","startHours":10.248320340317225,"endHours":11.659764417846876,"quality":"auspicious"},{"name":"Roga","start":"11:40","end":"13:04","startHours":11.659764417846876,"endHours":13.071208495376531,"quality":"inauspicious"},{"name":"Udveg","start":"13:04","end":"14:29","startHours":13.071208495376531,"endHours":14.482652572906183,"quality":"inauspicious"},{"name":"Chala","start":"14:29","end":"15:54","startHours":14.482652572906183,"endHours":15.894096650435838,"quality":"neutral"},{"name":"Labha","start":"15:54","end":"17:18","startHours":15.894096650435838,"endHours":17.30554072796549,"quality":"auspicious"},{"name":"Amṛta","start":"17:18","end":"18:43","startHours":17.30554072796549,"endHours":18.716984805495144,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:43","end":"20:18","startHours":18.716984805495144,"endHours":20.305540727965493,"quality":"neutral"},{"name":"Labha","start":"20:18","end":"21:54","startHours":20.305540727965493,"endHours":21.894096650435838,"quality":"auspicious"},{"name":"Amṛta","start":"21:54","end":"23:29","startHours":21.894096650435838,"endHours":23.482652572906183,"quality":"auspicious"},{"name":"Kāla","start":"23:29","end":"01:04","startHours":23.482652572906183,"endHours":25.07120849537653,"quality":"inauspicious"},{"name":"Śubha","start":"01:04","end":"02:40","startHours":25.07120849537653,"endHours":26.65976441784688,"quality":"auspicious"},{"name":"Roga","start":"02:40","end":"04:15","startHours":26.65976441784688,"endHours":28.248320340317225,"quality":"inauspicious"},{"name":"Udveg","start":"04:15","end":"05:50","startHours":28.248320340317225,"endHours":29.83687626278757,"quality":"inauspicious"},{"name":"Chala","start":"05:50","end":"07:26","startHours":29.83687626278757,"endHours":31.425432185257918,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:26","end":"08:26","startHours":7.425432185257917,"endHours":8.425432185257918,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:26","end":"09:26","startHours":8.425432185257918,"endHours":9.425432185257918,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:26","end":"10:26","startHours":9.425432185257918,"endHours":10.425432185257918,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:26","end":"11:26","startHours":10.425432185257918,"endHours":11.425432185257918,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:26","end":"12:26","startHours":11.425432185257918,"endHours":12.425432185257918,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:26","end":"13:26","startHours":12.425432185257918,"endHours":13.425432185257918,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:26","end":"14:26","startHours":13.425432185257918,"endHours":14.425432185257918,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:26","end":"15:26","startHours":14.425432185257918,"endHours":15.425432185257918,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:26","end":"16:26","startHours":15.425432185257918,"endHours":16.425432185257918,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:26","end":"17:26","startHours":16.425432185257918,"endHours":17.425432185257918,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:26","end":"18:26","startHours":17.425432185257918,"endHours":18.425432185257918,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:26","end":"19:26","startHours":18.425432185257918,"endHours":19.425432185257918,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:26","end":"20:26","startHours":19.425432185257918,"endHours":20.425432185257918,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:26","end":"21:26","startHours":20.425432185257918,"endHours":21.425432185257918,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:26","end":"22:26","startHours":21.425432185257918,"endHours":22.425432185257918,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:26","end":"23:26","startHours":22.425432185257918,"endHours":23.425432185257918,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:26","end":"00:26","startHours":23.425432185257918,"endHours":24.425432185257918,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:26","end":"01:26","startHours":24.425432185257918,"endHours":25.425432185257918,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:26","end":"02:26","startHours":25.425432185257918,"endHours":26.425432185257918,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:26","end":"03:26","startHours":26.425432185257918,"endHours":27.425432185257918,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:26","end":"04:26","startHours":27.425432185257918,"endHours":28.425432185257918,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:26","end":"05:26","startHours":28.425432185257918,"endHours":29.425432185257918,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:26","end":"06:26","startHours":29.425432185257918,"endHours":30.425432185257918,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:26","end":"07:26","startHours":30.425432185257918,"endHours":31.425432185257918,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","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":-14.746827649045654,"eotMinutes":-14.503309722591807,"ayanamsa":23.5891}},"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 Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"sarasvati-jayanti","name":"Sarasvatī Jayantī (Vasanta Pañchamī)","name_sanskrit":"सरस्वती जयन्ती / वसन्त पञ्चमी","tradition":"Pan-Hindu","associated_deity":"Sarasvatī (Vāk-tattva)","significance":"Manifestation of Devī Sarasvatī; vidyā-ārambha day; vasanta-ṛtu begins.","vrata":true,"detection":{"tithi_number":5,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Skanda Purāṇa","Devī Bhāgavata"]}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"jamnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 9, 1981 CE · Jamnagar, Gujarat · Vidhyamitra","description":"February 9, 1981 CE for Jamnagar, Gujarat: Śukla Pañcamī, sūryodaya 07:26, sūryāsta 18:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1981-02-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1981-02-09","sa":"https://sa.vidhyamitra.com/city/jamnagar/1981-02-09","hi":"https://hi.vidhyamitra.com/city/jamnagar/1981-02-09","x-default":"https://vidhyamitra.com/city/jamnagar/1981-02-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T04:09:09.768Z","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":"2026-05-31T04:09:09.768Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T04:09:09.768Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}