{"id":"vidhyamitra:city-day:jamnagar:1981-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1981-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-30","date_display":"January 30, 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":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444634.770833,"kali_year":5082,"ahargana":1856169.2708,"sun":{"sidereal_longitude":286.5288,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":217.0104,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":290.4816,"elapsed_within_tithi_degrees":2.4816},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.0104,"elapsed_within_degrees":3.6771},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":143.5392},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444634.770833,"ahargana":1856169.2708,"kali_year":5082,"ayanamsa_lahiri":23.5887,"grahas":{"sun":{"sidereal_longitude":286.478832,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":216.75533199999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":4.3298},"mars":{"sidereal_longitude":300.45883200000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":304.61593200000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":166.809932,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":true},"venus":{"sidereal_longitude":270.166832,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":165.85333200000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":111.2195,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":291.2195,"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":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444634.770833,"kali_year":5082,"ahargana":1856169.2708,"sun":{"sidereal_longitude":286.5288,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":217.0104,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":290.4816,"elapsed_within_tithi_degrees":2.4816},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":217.0104,"elapsed_within_degrees":3.6771},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":143.5392},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.33,"elongation":69.518},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.33,"opposition_distance":110.482}},"eclipse_window_40days":[{"offset_days":-10,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":6,"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":"07:30","sunsetLocal":"18:37","solarNoonLocal":"13:03","dayLengthHours":11.114512994429496,"dayLengthDisplay":"11 Hours 06 Mins 52 Secs","nightLengthDisplay":"12 Hours 53 Mins 08 Secs","moonriseLocal":"02:57","moonsetLocal":"13:52","rahuKala":{"name":"Rāhu Kāla","start":"11:40","end":"13:03","startHours":11.662791641959053,"endHours":13.052105766262741,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:50","end":"17:13","startHours":15.830734014870115,"endHours":17.2200481391738,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:53","end":"10:16","startHours":8.884163393351681,"endHours":10.273477517655367,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"10:05","end":"10:28","startHours":10.088235634414875,"endHours":10.458719400895859,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:57","end":"08:15","startHours":7.957953977149222,"endHours":8.254340990334008,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:41","end":"13:25","startHours":12.681621999781758,"endHours":13.422589532743725,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:01","end":"06:45","startHours":6.01291420312406,"endHours":6.753881736086027,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:34","end":"07:30","startHours":6.568639852845535,"endHours":7.494849269047993,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:54","end":"15:39","startHours":14.904524598667656,"endHours":15.645492131629622,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:25","end":"18:49","startHours":18.40936226347749,"endHours":18.80936226347749,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:37","end":"19:04","startHours":18.60936226347749,"endHours":19.07246697157872,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:22","end":"20:07","startHours":18.35936226347749,"endHours":20.10936226347749,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:41","end":"01:25","startHours":24.681621999781758,"endHours":25.422589532743725,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:30","end":"08:53","startHours":7.494849269047993,"endHours":8.884163393351681,"quality":"neutral"},{"name":"Labha","start":"08:53","end":"10:16","startHours":8.884163393351681,"endHours":10.273477517655367,"quality":"auspicious"},{"name":"Amṛta","start":"10:16","end":"11:40","startHours":10.273477517655367,"endHours":11.662791641959053,"quality":"auspicious"},{"name":"Kāla","start":"11:40","end":"13:03","startHours":11.662791641959053,"endHours":13.052105766262741,"quality":"inauspicious"},{"name":"Śubha","start":"13:03","end":"14:26","startHours":13.052105766262741,"endHours":14.44141989056643,"quality":"auspicious"},{"name":"Roga","start":"14:26","end":"15:50","startHours":14.44141989056643,"endHours":15.830734014870115,"quality":"inauspicious"},{"name":"Udveg","start":"15:50","end":"17:13","startHours":15.830734014870115,"endHours":17.2200481391738,"quality":"inauspicious"},{"name":"Chala","start":"17:13","end":"18:37","startHours":17.2200481391738,"endHours":18.60936226347749,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:37","end":"20:13","startHours":18.60936226347749,"endHours":20.2200481391738,"quality":"inauspicious"},{"name":"Udveg","start":"20:13","end":"21:50","startHours":20.2200481391738,"endHours":21.830734014870117,"quality":"inauspicious"},{"name":"Chala","start":"21:50","end":"23:26","startHours":21.830734014870117,"endHours":23.44141989056643,"quality":"neutral"},{"name":"Labha","start":"23:26","end":"01:03","startHours":23.44141989056643,"endHours":25.05210576626274,"quality":"auspicious"},{"name":"Amṛta","start":"01:03","end":"02:40","startHours":25.05210576626274,"endHours":26.662791641959053,"quality":"auspicious"},{"name":"Kāla","start":"02:40","end":"04:16","startHours":26.662791641959053,"endHours":28.273477517655365,"quality":"inauspicious"},{"name":"Śubha","start":"04:16","end":"05:53","startHours":28.273477517655365,"endHours":29.88416339335168,"quality":"auspicious"},{"name":"Roga","start":"05:53","end":"07:30","startHours":29.88416339335168,"endHours":31.494849269047993,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:30","end":"08:30","startHours":7.494849269047993,"endHours":8.494849269047993,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:30","end":"09:30","startHours":8.494849269047993,"endHours":9.494849269047993,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:30","end":"10:30","startHours":9.494849269047993,"endHours":10.494849269047993,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:30","end":"11:30","startHours":10.494849269047993,"endHours":11.494849269047993,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:30","end":"12:30","startHours":11.494849269047993,"endHours":12.494849269047993,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:30","end":"13:30","startHours":12.494849269047993,"endHours":13.494849269047993,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:30","end":"14:30","startHours":13.494849269047993,"endHours":14.494849269047993,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:30","end":"15:30","startHours":14.494849269047993,"endHours":15.494849269047993,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:30","end":"16:30","startHours":15.494849269047993,"endHours":16.494849269047993,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:30","end":"17:30","startHours":16.494849269047993,"endHours":17.494849269047993,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:30","end":"18:30","startHours":17.494849269047993,"endHours":18.494849269047993,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:30","end":"19:30","startHours":18.494849269047993,"endHours":19.494849269047993,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:30","end":"20:30","startHours":19.494849269047993,"endHours":20.494849269047993,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:30","end":"21:30","startHours":20.494849269047993,"endHours":21.494849269047993,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:30","end":"22:30","startHours":21.494849269047993,"endHours":22.494849269047993,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:30","end":"23:30","startHours":22.494849269047993,"endHours":23.494849269047993,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:30","end":"00:30","startHours":23.494849269047993,"endHours":24.494849269047993,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:30","end":"01:30","startHours":24.494849269047993,"endHours":25.494849269047993,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:30","end":"02:30","startHours":25.494849269047993,"endHours":26.494849269047993,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:30","end":"03:30","startHours":26.494849269047993,"endHours":27.494849269047993,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:30","end":"04:30","startHours":27.494849269047993,"endHours":28.494849269047993,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:30","end":"05:30","startHours":28.494849269047993,"endHours":29.494849269047993,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:30","end":"06:30","startHours":29.494849269047993,"endHours":30.494849269047993,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:30","end":"07:30","startHours":30.494849269047993,"endHours":31.494849269047993,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"South-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-17.720818877496043,"eotMinutes":-13.357145975764517,"ayanamsa":23.5887}},"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 Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 January 30, 1981 CE · Jamnagar, Gujarat · Vidhyamitra","description":"January 30, 1981 CE for Jamnagar, Gujarat: Kṛṣṇa Daśamī, sūryodaya 07:30, sūryāsta 18:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1981-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1981-01-30","sa":"https://sa.vidhyamitra.com/city/jamnagar/1981-01-30","hi":"https://hi.vidhyamitra.com/city/jamnagar/1981-01-30","x-default":"https://vidhyamitra.com/city/jamnagar/1981-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T06:14:26.948Z","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":"2026-05-18T06:14:26.948Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T06:14:26.948Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}