{"id":"vidhyamitra:city-day:jamnagar:1971-07-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jamnagar/1971-07-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-07-18","date_display":"July 18, 1971 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":1971,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441150.770833,"kali_year":5073,"ahargana":1852685.2708,"sun":{"sidereal_longitude":90.9497,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":37.3275,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":306.3778,"elapsed_within_tithi_degrees":6.3778},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.3275,"elapsed_within_degrees":10.6608},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":128.2772},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1971,"month":7,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441150.770833,"ahargana":1852685.2708,"kali_year":5073,"ayanamsa_lahiri":23.4555,"grahas":{"sun":{"sidereal_longitude":91.328846,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"moon":{"sidereal_longitude":37.77864599999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":4.4093},"mars":{"sidereal_longitude":298.532146,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":115.969946,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":213.949746,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":80.57504599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":40.134345999999994,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":295.8186,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":115.8186,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1971,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441150.770833,"kali_year":5073,"ahargana":1852685.2708,"sun":{"sidereal_longitude":90.9497,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":37.3275,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":306.3778,"elapsed_within_tithi_degrees":6.3778},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.3275,"elapsed_within_degrees":10.6608},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":128.2772},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.409,"elongation":53.622},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.409,"opposition_distance":126.378}},"eclipse_window_40days":[{"offset_days":20,"type":"lunar","occurs":true,"moon_latitude":-0.252,"opposition_distance":1.604}]},"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":"06:15","sunsetLocal":"19:36","solarNoonLocal":"12:56","dayLengthHours":13.359596949889308,"dayLengthDisplay":"13 Hours 21 Mins 35 Secs","nightLengthDisplay":"10 Hours 38 Mins 25 Secs","moonriseLocal":"02:43","moonsetLocal":"16:00","rahuKala":{"name":"Rāhu Kāla","start":"17:56","end":"19:36","startHours":17.93693412488364,"endHours":19.606883743619804,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:56","end":"14:36","startHours":12.92708526867515,"endHours":14.597034887411311,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"16:16","end":"17:56","startHours":16.266984506147477,"endHours":17.93693412488364,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:22","end":"09:49","startHours":9.364526082038001,"endHours":9.809845980367644,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:48","end":"07:10","startHours":6.803936666642549,"endHours":7.160192585306264,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:29","end":"13:22","startHours":12.481765370345506,"endHours":13.372405167004793,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:21","startHours":4.46600720041192,"endHours":5.356646997071207,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:08","end":"06:15","startHours":5.133987047906386,"endHours":6.247286793730495,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"15:09","end":"16:03","startHours":15.153684760323369,"endHours":16.044324556982655,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:24","end":"19:48","startHours":19.406883743619805,"endHours":19.806883743619803,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:36","end":"20:10","startHours":19.606883743619804,"endHours":20.163533616531858,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:21","end":"21:06","startHours":19.356883743619804,"endHours":21.106883743619804,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:29","end":"01:22","startHours":24.481765370345506,"endHours":25.372405167004793,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:15","end":"07:55","startHours":6.247286793730495,"endHours":7.917236412466658,"quality":"inauspicious"},{"name":"Chala","start":"07:55","end":"09:35","startHours":7.917236412466658,"endHours":9.587186031202823,"quality":"neutral"},{"name":"Labha","start":"09:35","end":"11:15","startHours":9.587186031202823,"endHours":11.257135649938984,"quality":"auspicious"},{"name":"Amṛta","start":"11:15","end":"12:56","startHours":11.257135649938984,"endHours":12.92708526867515,"quality":"auspicious"},{"name":"Kāla","start":"12:56","end":"14:36","startHours":12.92708526867515,"endHours":14.597034887411311,"quality":"inauspicious"},{"name":"Śubha","start":"14:36","end":"16:16","startHours":14.597034887411311,"endHours":16.266984506147477,"quality":"auspicious"},{"name":"Roga","start":"16:16","end":"17:56","startHours":16.266984506147477,"endHours":17.93693412488364,"quality":"inauspicious"},{"name":"Udveg","start":"17:56","end":"19:36","startHours":17.93693412488364,"endHours":19.606883743619804,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:36","end":"20:56","startHours":19.606883743619804,"endHours":20.936934124883642,"quality":"auspicious"},{"name":"Roga","start":"20:56","end":"22:16","startHours":20.936934124883642,"endHours":22.266984506147477,"quality":"inauspicious"},{"name":"Udveg","start":"22:16","end":"23:36","startHours":22.266984506147477,"endHours":23.59703488741131,"quality":"inauspicious"},{"name":"Chala","start":"23:36","end":"00:56","startHours":23.59703488741131,"endHours":24.92708526867515,"quality":"neutral"},{"name":"Labha","start":"00:56","end":"02:15","startHours":24.92708526867515,"endHours":26.257135649938988,"quality":"auspicious"},{"name":"Amṛta","start":"02:15","end":"03:35","startHours":26.257135649938988,"endHours":27.587186031202823,"quality":"auspicious"},{"name":"Kāla","start":"03:35","end":"04:55","startHours":27.587186031202823,"endHours":28.917236412466657,"quality":"inauspicious"},{"name":"Śubha","start":"04:55","end":"06:15","startHours":28.917236412466657,"endHours":30.247286793730495,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:15","end":"07:15","startHours":6.247286793730495,"endHours":7.247286793730495,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:15","end":"08:15","startHours":7.247286793730495,"endHours":8.247286793730495,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:15","end":"09:15","startHours":8.247286793730495,"endHours":9.247286793730495,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:15","end":"10:15","startHours":9.247286793730495,"endHours":10.247286793730495,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:15","end":"11:15","startHours":10.247286793730495,"endHours":11.247286793730495,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:15","end":"12:15","startHours":11.247286793730495,"endHours":12.247286793730495,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:15","end":"13:15","startHours":12.247286793730495,"endHours":13.247286793730495,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:15","end":"14:15","startHours":13.247286793730495,"endHours":14.247286793730495,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:15","end":"15:15","startHours":14.247286793730495,"endHours":15.247286793730495,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:15","end":"16:15","startHours":15.247286793730495,"endHours":16.247286793730495,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:15","end":"17:15","startHours":16.247286793730495,"endHours":17.247286793730495,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:15","end":"18:15","startHours":17.247286793730495,"endHours":18.247286793730495,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:15","end":"19:15","startHours":18.247286793730495,"endHours":19.247286793730495,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:15","end":"20:15","startHours":19.247286793730495,"endHours":20.247286793730495,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:15","end":"21:15","startHours":20.247286793730495,"endHours":21.247286793730495,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:15","end":"22:15","startHours":21.247286793730495,"endHours":22.247286793730495,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:15","end":"23:15","startHours":22.247286793730495,"endHours":23.247286793730495,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:15","end":"00:15","startHours":23.247286793730495,"endHours":24.247286793730495,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:15","end":"01:15","startHours":24.247286793730495,"endHours":25.247286793730495,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:15","end":"02:15","startHours":25.247286793730495,"endHours":26.247286793730495,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:15","end":"03:15","startHours":26.247286793730495,"endHours":27.247286793730495,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:15","end":"04:15","startHours":27.247286793730495,"endHours":28.247286793730495,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:15","end":"05:15","startHours":28.247286793730495,"endHours":29.247286793730495,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:15","end":"06:15","startHours":29.247286793730495,"endHours":30.247286793730495,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.16765172353955,"eotMinutes":-5.85591612050904,"ayanamsa":23.4555}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Ekādaśī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"aja-ekadashi","name":"Ajā Ekādaśī","name_sanskrit":"अजा एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"King Hariścandra observed this; restored him to throne and family.","vrata":true,"detection":{"tithi_number":26,"tithi_paksha":"Kṛṣṇa","lunar_month":"Śrāvaṇa"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"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 July 18, 1971 CE · Jamnagar, Gujarat · Vidhyamitra","description":"July 18, 1971 CE for Jamnagar, Gujarat: Kṛṣṇa Ekādaśī, sūryodaya 06:15, sūryāsta 19:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jamnagar/1971-07-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jamnagar/1971-07-18","sa":"https://sa.vidhyamitra.com/city/jamnagar/1971-07-18","hi":"https://hi.vidhyamitra.com/city/jamnagar/1971-07-18","x-default":"https://vidhyamitra.com/city/jamnagar/1971-07-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T06:19:37.412Z","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":"2026-06-01T06:19:37.412Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T06:19:37.412Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}