{"id":"vidhyamitra:day:1660-05-12:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1660-05-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1660-05-12","date_display":"May 12, 1660 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":1660,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2327494.770833,"kali_year":4762,"ahargana":1739029.2708,"sun":{"sidereal_longitude":33.4972,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":67.5399,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":34.0427,"elapsed_within_tithi_degrees":10.0427},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.5399,"elapsed_within_degrees":0.8733},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":101.0372},"karana":{"half_tithi_index":5,"name":"Gara"},"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":1660,"month":5,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2327494.770833,"ahargana":1739029.2708,"kali_year":4762,"ayanamsa_lahiri":19.1085,"grahas":{"sun":{"sidereal_longitude":32.73684100000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":64.365141,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false,"latitude":-3.4295},"mars":{"sidereal_longitude":98.610141,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":53.09084100000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":138.892041,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":76.25084099999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":203.54074100000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":197.8604,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":17.8604,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"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":1660,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2327494.770833,"kali_year":4762,"ahargana":1739029.2708,"sun":{"sidereal_longitude":33.4972,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":67.5399,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":34.0427,"elapsed_within_tithi_degrees":10.0427},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.5399,"elapsed_within_degrees":0.8733},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":101.0372},"karana":{"half_tithi_index":5,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.429,"elongation":34.043},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.429,"opposition_distance":145.957}},"eclipse_window_40days":[{"offset_days":-3,"type":"solar","occurs":true,"moon_latitude":-0.85,"elongation":1.708}]},"calendars":{"vikram_samvat":1717,"vikram_samvatsara":"Pramādī","saka_samvat":1582,"saka_samvatsara":"Śārvarī","bengali_samvat":1067,"malayalam_era":836,"nanakshahi_year":191,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha (Adhika) Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Jyeṣṭha","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha (Adhika) Śukla Tṛtīyā · Vikram 1717 Pramādī · Śaka 1582 Śārvarī"},"festivals":[],"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":[]},"validity":{"eternal":false,"valid_from":"1660-05-12T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga May 12, 1660 CE · Vidhyamitra","description":"Vedic pañchāṅga for May 12, 1660 CE: Śukla Tṛtīyā · Ārdrā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1660-05-12","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1660-05-12","sa":"https://sa.vidhyamitra.com/day/1660-05-12","hi":"https://hi.vidhyamitra.com/day/1660-05-12","x-default":"https://vidhyamitra.com/day/1660-05-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-05T09:54:50.100Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-05T09:54:50.100Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}