{"id":"vidhyamitra:day:2288-07-13:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/2288-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2288-07-13","date_display":"July 13, 2288 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":2288,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2556928.770833,"kali_year":5390,"ahargana":1968463.2708,"sun":{"sidereal_longitude":82.4021,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":241.3087,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":158.9067,"elapsed_within_tithi_degrees":2.9067},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.3087,"elapsed_within_degrees":1.3087},"yoga":{"number":25,"name":"Brahma","sum_longitude":323.7108},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2288,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2556928.770833,"ahargana":1968463.2708,"kali_year":5390,"ayanamsa_lahiri":27.8835,"grahas":{"sun":{"sidereal_longitude":83.48607500000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"moon":{"sidereal_longitude":242.01347499999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":-2.8929},"mars":{"sidereal_longitude":101.554575,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":104.611875,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":119.380675,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":108.86997500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":308.39317500000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":281.343,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":101.343,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":2288,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2556928.770833,"kali_year":5390,"ahargana":1968463.2708,"sun":{"sidereal_longitude":82.4021,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":241.3087,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":158.9067,"elapsed_within_tithi_degrees":2.9067},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":241.3087,"elapsed_within_degrees":1.3087},"yoga":{"number":25,"name":"Brahma","sum_longitude":323.7108},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.893,"elongation":158.907},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.893,"opposition_distance":21.093}},"eclipse_window_40days":[{"offset_days":16,"type":"solar","occurs":true,"moon_latitude":0.291,"elongation":0.781}]},"calendars":{"vikram_samvat":2345,"vikram_samvatsara":"Vṛṣa","saka_samvat":2210,"saka_samvatsara":"Vibhava","bengali_samvat":1695,"malayalam_era":1464,"nanakshahi_year":819,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Caturdaśī · Vikram 2345 Vṛṣa · Śaka 2210 Vibhava"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"valid_from":"2288-07-13T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga July 13, 2288 CE · Vidhyamitra","description":"Vedic pañchāṅga for July 13, 2288 CE: Śukla Caturdaśī · Mūla.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/2288-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/day/2288-07-13","sa":"https://sa.vidhyamitra.com/day/2288-07-13","hi":"https://hi.vidhyamitra.com/day/2288-07-13","x-default":"https://vidhyamitra.com/day/2288-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T09:57:58.249Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-01T09:57:58.249Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}