{"id":"vidhyamitra:city-day:dwarka:2031-04-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dwarka/2031-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-04-13","date_display":"April 13, 2031 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":2031,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462969.770833,"kali_year":5132,"ahargana":1874504.2708,"sun":{"sidereal_longitude":358.7061,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":247.4322,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.7261,"elapsed_within_tithi_degrees":8.7261},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":247.4322,"elapsed_within_degrees":7.4322},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.1382},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":2031,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462969.770833,"ahargana":1874504.2708,"kali_year":5132,"ayanamsa_lahiri":24.29,"grahas":{"sun":{"sidereal_longitude":358.6402,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":248.7767,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false,"latitude":2.0894},"mars":{"sidereal_longitude":205.46159999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":344.52570000000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":244.70759999999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"venus":{"sidereal_longitude":37.95260000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":41.713300000000004,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":219.743,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":39.743,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2031,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462969.770833,"kali_year":5132,"ahargana":1874504.2708,"sun":{"sidereal_longitude":358.7061,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":247.4322,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.7261,"elapsed_within_tithi_degrees":8.7261},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":247.4322,"elapsed_within_degrees":7.4322},"yoga":{"number":19,"name":"Parigha","sum_longitude":246.1382},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.089,"elongation":111.274},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.089,"opposition_distance":68.726}},"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":"06:37","sunsetLocal":"19:13","solarNoonLocal":"12:55","dayLengthHours":12.612080068134823,"dayLengthDisplay":"12 Hours 36 Mins 43 Secs","nightLengthDisplay":"11 Hours 23 Mins 17 Secs","moonriseLocal":"00:13","moonsetLocal":"10:57","rahuKala":{"name":"Rāhu Kāla","start":"17:39","end":"19:13","startHours":17.644453539378965,"endHours":19.220963547895817,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:55","end":"14:29","startHours":12.914923513828406,"endHours":14.49143352234526,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"16:04","end":"17:39","startHours":16.067943530862113,"endHours":17.644453539378965,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:33","end":"09:58","startHours":9.551702162325787,"endHours":9.972104831263614,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:28","startHours":7.134386815933279,"endHours":7.470708951083541,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:30","end":"13:20","startHours":12.494520844890578,"endHours":13.335326182766233,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:56","end":"05:46","startHours":4.927272804009686,"endHours":5.76807814188534,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:33","end":"06:37","startHours":5.557876807416426,"endHours":6.608883479760995,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"15:01","end":"15:51","startHours":15.016936858517543,"endHours":15.857742196393197,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:01","end":"19:25","startHours":19.020963547895818,"endHours":19.420963547895816,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:13","end":"19:45","startHours":19.220963547895817,"endHours":19.746466884068102,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:58","end":"20:43","startHours":18.970963547895817,"endHours":20.720963547895817,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:30","end":"01:20","startHours":24.494520844890577,"endHours":25.335326182766234,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:37","end":"08:11","startHours":6.608883479760995,"endHours":8.185393488277848,"quality":"inauspicious"},{"name":"Chala","start":"08:11","end":"09:46","startHours":8.185393488277848,"endHours":9.761903496794702,"quality":"neutral"},{"name":"Labha","start":"09:46","end":"11:20","startHours":9.761903496794702,"endHours":11.338413505311554,"quality":"auspicious"},{"name":"Amṛta","start":"11:20","end":"12:55","startHours":11.338413505311554,"endHours":12.914923513828406,"quality":"auspicious"},{"name":"Kāla","start":"12:55","end":"14:29","startHours":12.914923513828406,"endHours":14.49143352234526,"quality":"inauspicious"},{"name":"Śubha","start":"14:29","end":"16:04","startHours":14.49143352234526,"endHours":16.067943530862113,"quality":"auspicious"},{"name":"Roga","start":"16:04","end":"17:39","startHours":16.067943530862113,"endHours":17.644453539378965,"quality":"inauspicious"},{"name":"Udveg","start":"17:39","end":"19:13","startHours":17.644453539378965,"endHours":19.220963547895817,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:13","end":"20:39","startHours":19.220963547895817,"endHours":20.644453539378965,"quality":"auspicious"},{"name":"Roga","start":"20:39","end":"22:04","startHours":20.644453539378965,"endHours":22.06794353086211,"quality":"inauspicious"},{"name":"Udveg","start":"22:04","end":"23:29","startHours":22.06794353086211,"endHours":23.491433522345258,"quality":"inauspicious"},{"name":"Chala","start":"23:29","end":"00:55","startHours":23.491433522345258,"endHours":24.914923513828406,"quality":"neutral"},{"name":"Labha","start":"00:55","end":"02:20","startHours":24.914923513828406,"endHours":26.338413505311554,"quality":"auspicious"},{"name":"Amṛta","start":"02:20","end":"03:46","startHours":26.338413505311554,"endHours":27.7619034967947,"quality":"auspicious"},{"name":"Kāla","start":"03:46","end":"05:11","startHours":27.7619034967947,"endHours":29.185393488277846,"quality":"inauspicious"},{"name":"Śubha","start":"05:11","end":"06:37","startHours":29.185393488277846,"endHours":30.608883479760994,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:37","end":"07:37","startHours":6.608883479760995,"endHours":7.608883479760995,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:37","end":"08:37","startHours":7.608883479760995,"endHours":8.608883479760994,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:37","end":"09:37","startHours":8.608883479760994,"endHours":9.608883479760994,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:37","end":"10:37","startHours":9.608883479760994,"endHours":10.608883479760994,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:37","end":"11:37","startHours":10.608883479760994,"endHours":11.608883479760994,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:37","end":"12:37","startHours":11.608883479760994,"endHours":12.608883479760994,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:37","end":"13:37","startHours":12.608883479760994,"endHours":13.608883479760994,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:37","end":"14:37","startHours":13.608883479760994,"endHours":14.608883479760994,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:37","end":"15:37","startHours":14.608883479760994,"endHours":15.608883479760994,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:37","end":"16:37","startHours":15.608883479760994,"endHours":16.608883479760994,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:37","end":"17:37","startHours":16.608883479760994,"endHours":17.608883479760994,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:37","end":"18:37","startHours":17.608883479760994,"endHours":18.608883479760994,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:37","end":"19:37","startHours":18.608883479760994,"endHours":19.608883479760994,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:37","end":"20:37","startHours":19.608883479760994,"endHours":20.608883479760994,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:37","end":"21:37","startHours":20.608883479760994,"endHours":21.608883479760994,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:37","end":"22:37","startHours":21.608883479760994,"endHours":22.608883479760994,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:37","end":"23:37","startHours":22.608883479760994,"endHours":23.608883479760994,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:37","end":"00:37","startHours":23.608883479760994,"endHours":24.608883479760994,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:37","end":"01:37","startHours":24.608883479760994,"endHours":25.608883479760994,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:37","end":"02:37","startHours":25.608883479760994,"endHours":26.608883479760994,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:37","end":"03:37","startHours":26.608883479760994,"endHours":27.608883479760994,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:37","end":"04:37","startHours":27.608883479760994,"endHours":28.608883479760994,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:37","end":"05:37","startHours":28.608883479760994,"endHours":29.608883479760994,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:37","end":"06:37","startHours":29.608883479760994,"endHours":30.608883479760994,"planetary_lord":"Jupiter"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":8.914495108977476,"eotMinutes":-0.7698108297043191,"ayanamsa":24.29}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Ṣaṣṭhī · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"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":[]},"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 April 13, 2031 CE · Dvārakā · Vidhyamitra","description":"April 13, 2031 CE for Dvārakā: Kṛṣṇa Ṣaṣṭhī, sūryodaya 06:37, sūryāsta 19:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dwarka/2031-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dwarka/2031-04-13","sa":"https://sa.vidhyamitra.com/city/dwarka/2031-04-13","hi":"https://hi.vidhyamitra.com/city/dwarka/2031-04-13","x-default":"https://vidhyamitra.com/city/dwarka/2031-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T21:17:42.623Z","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":"2026-05-14T21:17:42.623Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T21:17:42.623Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}