{"id":"vidhyamitra:day:1699-12-31:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1699-12-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1699-12-31","date_display":"December 31, 1699 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":1699,"month":12,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2341971.770833,"kali_year":4801,"ahargana":1753506.2708,"sun":{"sidereal_longitude":260.5835,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":11.2498,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":110.6663,"elapsed_within_tithi_degrees":2.6663},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":11.2498,"elapsed_within_degrees":11.2498},"yoga":{"number":21,"name":"Siddha","sum_longitude":271.8333},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1699,"month":12,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2341971.770833,"ahargana":1753506.2708,"kali_year":4801,"ayanamsa_lahiri":19.6622,"grahas":{"sun":{"sidereal_longitude":260.081013,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":7.382013000000029,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false,"latitude":-2.9178},"mars":{"sidereal_longitude":187.50511299999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":283.668713,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":264.39231300000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":275.73391300000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":312.452713,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":150.7993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":330.7993,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":1699,"month":12,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2341971.770833,"kali_year":4801,"ahargana":1753506.2708,"sun":{"sidereal_longitude":260.5835,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":11.2498,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":110.6663,"elapsed_within_tithi_degrees":2.6663},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":11.2498,"elapsed_within_degrees":11.2498},"yoga":{"number":21,"name":"Siddha","sum_longitude":271.8333},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.918,"elongation":110.666},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.918,"opposition_distance":69.334}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1756,"vikram_samvatsara":"Nandana","saka_samvat":1621,"saka_samvatsara":"Pramāthi","bengali_samvat":1106,"malayalam_era":875,"nanakshahi_year":230,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Daśamī · Vikram 1756 Nandana · Śaka 1621 Pramāthi"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"validity":{"eternal":false,"valid_from":"1699-12-31T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga December 31, 1699 CE · Vidhyamitra","description":"Vedic pañchāṅga for December 31, 1699 CE: Śukla Daśamī · Aśvinī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1699-12-31","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1699-12-31","sa":"https://sa.vidhyamitra.com/day/1699-12-31","hi":"https://hi.vidhyamitra.com/day/1699-12-31","x-default":"https://vidhyamitra.com/day/1699-12-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T14:56:50.854Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-02T14:56:50.854Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}