{"id":"vidhyamitra:city-day:dwarka:1973-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dwarka/1973-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-07-13","date_display":"July 13, 1973 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":1973,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441876.770833,"kali_year":5075,"ahargana":1853411.2708,"sun":{"sidereal_longitude":86.6705,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":238.8191,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":152.1486,"elapsed_within_tithi_degrees":8.1486},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.8191,"elapsed_within_degrees":12.1524},"yoga":{"number":25,"name":"Brahma","sum_longitude":325.4896},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":1973,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441876.770833,"ahargana":1853411.2708,"kali_year":5075,"ayanamsa_lahiri":23.4832,"grahas":{"sun":{"sidereal_longitude":87.02490799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":240.19040799999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":-1.429},"mars":{"sidereal_longitude":350.812708,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":98.71080799999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":286.25010799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"venus":{"sidereal_longitude":112.290008,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":64.39830799999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":257.3516,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":77.3516,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":1973,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441876.770833,"kali_year":5075,"ahargana":1853411.2708,"sun":{"sidereal_longitude":86.6705,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":238.8191,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":152.1486,"elapsed_within_tithi_degrees":8.1486},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":238.8191,"elapsed_within_degrees":12.1524},"yoga":{"number":25,"name":"Brahma","sum_longitude":325.4896},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.429,"elongation":152.149},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.429,"opposition_distance":27.851}},"eclipse_window_40days":[]},"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"sunriseLocal":"06:18","sunsetLocal":"19:41","solarNoonLocal":"12:59","dayLengthHours":13.390881734270287,"dayLengthDisplay":"13 Hours 23 Mins 27 Secs","nightLengthDisplay":"10 Hours 36 Mins 33 Secs","moonriseLocal":"17:50","moonsetLocal":"04:34","rahuKala":{"name":"Rāhu Kāla","start":"11:19","end":"12:59","startHours":11.317590263985558,"endHours":12.991450480769345,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"16:20","end":"18:01","startHours":16.33917091433692,"endHours":18.0130311311207,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:58","end":"09:39","startHours":7.969869830417987,"endHours":9.643730047201773,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:52","startHours":9.420548684963935,"endHours":9.866911409439611,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:51","end":"07:13","startHours":6.853963019228797,"endHours":7.211053198809338,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:33","end":"13:26","startHours":12.545087756293668,"endHours":13.437813205245021,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:24","startHours":4.510558715731496,"endHours":5.403284164682848,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:11","end":"06:18","startHours":5.18010280244501,"endHours":6.296009613634201,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"15:13","end":"16:07","startHours":15.223264103147727,"endHours":16.11598955209908,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:29","end":"19:53","startHours":19.48689134790449,"endHours":19.886891347904488,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:41","end":"20:15","startHours":19.68689134790449,"endHours":20.244844753499084,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:26","end":"21:11","startHours":19.43689134790449,"endHours":21.18689134790449,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:33","end":"01:26","startHours":24.54508775629367,"endHours":25.43781320524502,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:18","end":"07:58","startHours":6.296009613634201,"endHours":7.969869830417987,"quality":"neutral"},{"name":"Labha","start":"07:58","end":"09:39","startHours":7.969869830417987,"endHours":9.643730047201773,"quality":"auspicious"},{"name":"Amṛta","start":"09:39","end":"11:19","startHours":9.643730047201773,"endHours":11.317590263985558,"quality":"auspicious"},{"name":"Kāla","start":"11:19","end":"12:59","startHours":11.317590263985558,"endHours":12.991450480769345,"quality":"inauspicious"},{"name":"Śubha","start":"12:59","end":"14:40","startHours":12.991450480769345,"endHours":14.665310697553132,"quality":"auspicious"},{"name":"Roga","start":"14:40","end":"16:20","startHours":14.665310697553132,"endHours":16.33917091433692,"quality":"inauspicious"},{"name":"Udveg","start":"16:20","end":"18:01","startHours":16.33917091433692,"endHours":18.0130311311207,"quality":"inauspicious"},{"name":"Chala","start":"18:01","end":"19:41","startHours":18.0130311311207,"endHours":19.68689134790449,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:41","end":"21:01","startHours":19.68689134790449,"endHours":21.0130311311207,"quality":"inauspicious"},{"name":"Udveg","start":"21:01","end":"22:20","startHours":21.0130311311207,"endHours":22.33917091433692,"quality":"inauspicious"},{"name":"Chala","start":"22:20","end":"23:40","startHours":22.33917091433692,"endHours":23.66531069755313,"quality":"neutral"},{"name":"Labha","start":"23:40","end":"00:59","startHours":23.66531069755313,"endHours":24.991450480769345,"quality":"auspicious"},{"name":"Amṛta","start":"00:59","end":"02:19","startHours":24.991450480769345,"endHours":26.317590263985558,"quality":"auspicious"},{"name":"Kāla","start":"02:19","end":"03:39","startHours":26.317590263985558,"endHours":27.64373004720177,"quality":"inauspicious"},{"name":"Śubha","start":"03:39","end":"04:58","startHours":27.64373004720177,"endHours":28.969869830417988,"quality":"auspicious"},{"name":"Roga","start":"04:58","end":"06:18","startHours":28.969869830417988,"endHours":30.2960096136342,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:18","end":"07:18","startHours":6.296009613634201,"endHours":7.296009613634201,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:18","end":"08:18","startHours":7.296009613634201,"endHours":8.296009613634201,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:18","end":"09:18","startHours":8.296009613634201,"endHours":9.296009613634201,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:18","end":"10:18","startHours":9.296009613634201,"endHours":10.296009613634201,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:18","end":"11:18","startHours":10.296009613634201,"endHours":11.296009613634201,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:18","end":"12:18","startHours":11.296009613634201,"endHours":12.296009613634201,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:18","end":"13:18","startHours":12.296009613634201,"endHours":13.296009613634201,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:18","end":"14:18","startHours":13.296009613634201,"endHours":14.296009613634201,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:18","end":"15:18","startHours":14.296009613634201,"endHours":15.296009613634201,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:18","end":"16:18","startHours":15.296009613634201,"endHours":16.2960096136342,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:18","end":"17:18","startHours":16.2960096136342,"endHours":17.2960096136342,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:18","end":"18:18","startHours":17.2960096136342,"endHours":18.2960096136342,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:18","end":"19:18","startHours":18.2960096136342,"endHours":19.2960096136342,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:18","end":"20:18","startHours":19.2960096136342,"endHours":20.2960096136342,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:18","end":"21:18","startHours":20.2960096136342,"endHours":21.2960096136342,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:18","end":"22:18","startHours":21.2960096136342,"endHours":22.2960096136342,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:18","end":"23:18","startHours":22.2960096136342,"endHours":23.2960096136342,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:18","end":"00:18","startHours":23.2960096136342,"endHours":24.2960096136342,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:18","end":"01:18","startHours":24.2960096136342,"endHours":25.2960096136342,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:18","end":"02:18","startHours":25.2960096136342,"endHours":26.2960096136342,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:18","end":"03:18","startHours":26.2960096136342,"endHours":27.2960096136342,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:18","end":"04:18","startHours":27.2960096136342,"endHours":28.2960096136342,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:18","end":"05:18","startHours":28.2960096136342,"endHours":29.2960096136342,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:18","end":"06:18","startHours":29.2960096136342,"endHours":30.2960096136342,"planetary_lord":"Mars"}],"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","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":21.871438707300673,"eotMinutes":-5.361428846160681,"ayanamsa":23.4832}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Trayodaśī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"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":"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"dwarka"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 13, 1973 CE · Dvārakā · Vidhyamitra","description":"July 13, 1973 CE for Dvārakā: Śukla Trayodaśī, sūryodaya 06:18, sūryāsta 19:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dwarka/1973-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dwarka/1973-07-13","sa":"https://sa.vidhyamitra.com/city/dwarka/1973-07-13","hi":"https://hi.vidhyamitra.com/city/dwarka/1973-07-13","x-default":"https://vidhyamitra.com/city/dwarka/1973-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:10:09.029Z","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":"2026-05-31T06:10:09.029Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:10:09.029Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}