{"id":"vidhyamitra:day:2353-12-13:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2353-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2353-12-13","date_display":"December 13, 2353 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":2353,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2580821.770833,"kali_year":5455,"ahargana":1992356.2708,"sun":{"sidereal_longitude":230.5747,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":67.8221,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.2474,"elapsed_within_tithi_degrees":5.2474},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.8221,"elapsed_within_degrees":1.1555},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.3968},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":2353,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2580821.770833,"ahargana":1992356.2708,"kali_year":5455,"ayanamsa_lahiri":28.7974,"grahas":{"sun":{"sidereal_longitude":231.870987,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":71.03328699999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-2.08},"mars":{"sidereal_longitude":34.42068699999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":214.86168700000007,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":292.84818700000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"venus":{"sidereal_longitude":245.558587,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":21.062486999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":95.3769,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":275.3769,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2353,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2580821.770833,"kali_year":5455,"ahargana":1992356.2708,"sun":{"sidereal_longitude":230.5747,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":67.8221,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.2474,"elapsed_within_tithi_degrees":5.2474},"nakshatra":{"number":6,"name":"Ārdrā","pada":1,"moon_longitude":67.8221,"elapsed_within_degrees":1.1555},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.3968},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.08,"elongation":162.753},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.08,"opposition_distance":17.247}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":2410,"vikram_samvatsara":"Vyaya","saka_samvat":2275,"saka_samvatsara":"Śrīmukha","bengali_samvat":1760,"malayalam_era":1529,"nanakshahi_year":884,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Dvitīyā · Vikram 2410 Vyaya · Śaka 2275 Śrīmukha"},"festivals":[],"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,"valid_from":"2353-12-13T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga December 13, 2353 CE · Vidhyamitra","description":"Vedic pañchāṅga for December 13, 2353 CE: Kṛṣṇa Dvitīyā · Ārdrā.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2353-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2353-12-13","sa":"https://sa.vidhyamitra.com/day/2353-12-13","hi":"https://hi.vidhyamitra.com/day/2353-12-13","x-default":"https://vidhyamitra.com/day/2353-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-08T04:50:50.465Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-08T04:50:50.465Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}