{"id":"vidhyamitra:day:1697-04-15:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1697-04-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1697-04-15","date_display":"April 15, 1697 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":1697,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2340981.770833,"kali_year":4799,"ahargana":1752516.2708,"sun":{"sidereal_longitude":6.917,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":287.9123,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":280.9953,"elapsed_within_tithi_degrees":4.9953},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":287.9123,"elapsed_within_degrees":7.9123},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.8293},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1697,"month":4,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2340981.770833,"ahargana":1752516.2708,"kali_year":4799,"ayanamsa_lahiri":19.6244,"grahas":{"sun":{"sidereal_longitude":6.10463900000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":283.5712390000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":4.4804},"mars":{"sidereal_longitude":7.070239000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":345.51153899999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":185.51973899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":55.984939,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":291.867339,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":203.2543,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":23.2543,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1697,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2340981.770833,"kali_year":4799,"ahargana":1752516.2708,"sun":{"sidereal_longitude":6.917,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":287.9123,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":280.9953,"elapsed_within_tithi_degrees":4.9953},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":287.9123,"elapsed_within_degrees":7.9123},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.8293},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.48,"elongation":79.005},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.48,"opposition_distance":100.995}},"eclipse_window_40days":[{"offset_days":6,"type":"solar","occurs":true,"moon_latitude":0.768,"elongation":0.367}]},"calendars":{"vikram_samvat":1754,"vikram_samvatsara":"Vikṛti","saka_samvat":1619,"saka_samvatsara":"Īśvara","bengali_samvat":1104,"malayalam_era":873,"nanakshahi_year":228,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Navamī · Vikram 1754 Vikṛti · Śaka 1619 Īśvara"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"valid_from":"1697-04-15T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga April 15, 1697 CE · Vidhyamitra","description":"Vedic pañchāṅga for April 15, 1697 CE: Kṛṣṇa Navamī · Śravaṇa.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1697-04-15","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1697-04-15","sa":"https://sa.vidhyamitra.com/day/1697-04-15","hi":"https://hi.vidhyamitra.com/day/1697-04-15","x-default":"https://vidhyamitra.com/day/1697-04-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T15:58:47.397Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-02T15:58:47.397Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}