{"id":"vidhyamitra:day:1913-05-21:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1913-05-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1913-05-21","date_display":"May 21, 1913 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":1913,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419908.770833,"kali_year":5015,"ahargana":1831443.2708,"sun":{"sidereal_longitude":36.8768,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":228.1469,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":191.2702,"elapsed_within_tithi_degrees":11.2702},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":228.1469,"elapsed_within_degrees":1.4803},"yoga":{"number":20,"name":"Śiva","sum_longitude":265.0237},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1913,"month":5,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2419908.770833,"ahargana":1831443.2708,"kali_year":5015,"ayanamsa_lahiri":22.643,"grahas":{"sun":{"sidereal_longitude":36.73164700000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":226.222447,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false,"latitude":-4.1362},"mars":{"sidereal_longitude":348.419147,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":24.111447,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":266.03694700000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":5.060946999999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":44.579346999999984,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":341.322,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":161.322,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"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":1913,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2419908.770833,"kali_year":5015,"ahargana":1831443.2708,"sun":{"sidereal_longitude":36.8768,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":228.1469,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":191.2702,"elapsed_within_tithi_degrees":11.2702},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":228.1469,"elapsed_within_degrees":1.4803},"yoga":{"number":20,"name":"Śiva","sum_longitude":265.0237},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.136,"elongation":168.73},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.136,"opposition_distance":11.27}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1970,"vikram_samvatsara":"Akṣaya","saka_samvat":1835,"saka_samvatsara":"Pramādī","bengali_samvat":1320,"malayalam_era":1089,"nanakshahi_year":444,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Pratipada · Vikram 1970 Akṣaya · Śaka 1835 Pramādī"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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,"valid_from":"1913-05-21T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga May 21, 1913 CE · Vidhyamitra","description":"Vedic pañchāṅga for May 21, 1913 CE: Kṛṣṇa Pratipada · Jyeṣṭhā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1913-05-21","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1913-05-21","sa":"https://sa.vidhyamitra.com/day/1913-05-21","hi":"https://hi.vidhyamitra.com/day/1913-05-21","x-default":"https://vidhyamitra.com/day/1913-05-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T10:43:27.974Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-14T10:43:27.974Z","pillar_versions":{"BOB-History":"Pūrṇa"}}}