{"id":"vidhyamitra:city-day:vrindavan:2131-01-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2131-01-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-01-01","date_display":"January 1, 2131 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":2131,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499391.770833,"kali_year":5232,"ahargana":1910926.2708,"sun":{"sidereal_longitude":253.8761,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":271.683,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.8069,"elapsed_within_tithi_degrees":5.8069},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.683,"elapsed_within_degrees":5.0163},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":165.5591},"karana":{"half_tithi_index":2,"name":"Bālava"},"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":2131,"month":1,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499391.770833,"ahargana":1910926.2708,"kali_year":5232,"ayanamsa_lahiri":25.683,"grahas":{"sun":{"sidereal_longitude":254.43991200000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":273.182412,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":-0.1375},"mars":{"sidereal_longitude":215.35301200000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":237.62911200000008,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":18.507911999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":207.79091199999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":196.51511200000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":89.9301,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":269.9301,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"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":2131,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499391.770833,"kali_year":5232,"ahargana":1910926.2708,"sun":{"sidereal_longitude":253.8761,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":271.683,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":17.8069,"elapsed_within_tithi_degrees":5.8069},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":271.683,"elapsed_within_degrees":5.0163},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":165.5591},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.138,"elongation":17.807},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.138,"opposition_distance":162.193}},"eclipse_window_40days":[]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:10","sunsetLocal":"17:36","solarNoonLocal":"12:23","dayLengthHours":10.428199084763719,"dayLengthDisplay":"10 Hours 25 Mins 42 Secs","nightLengthDisplay":"13 Hours 34 Mins 18 Secs","moonriseLocal":"08:20","moonsetLocal":"18:56","rahuKala":{"name":"Rāhu Kāla","start":"08:28","end":"09:47","startHours":8.47389164860354,"endHours":9.777416534199006,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:05","end":"12:23","startHours":11.08094141979447,"endHours":12.384466305389935,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:41","end":"14:59","startHours":13.6879911909854,"endHours":14.991516076580865,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:57","startHours":9.603613216119609,"endHours":9.951219852278399,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:36","end":"07:53","startHours":7.604875058206563,"endHours":7.882960367133595,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:44","startHours":12.036859669231145,"endHours":12.732072941548726,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:47","end":"06:29","startHours":5.7799402183729125,"endHours":6.475153490690493,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:18","end":"07:10","startHours":6.301350172611098,"endHours":7.170366763008075,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:49","startHours":14.122499486183887,"endHours":14.817712758501468,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.398565847771795,"endHours":17.798565847771794,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:02","startHours":17.598565847771795,"endHours":18.033074142970282,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.348565847771795,"endHours":19.098565847771795,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:44","startHours":24.036859669231145,"endHours":24.732072941548726,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:10","end":"08:28","startHours":7.170366763008075,"endHours":8.47389164860354,"quality":"auspicious"},{"name":"Kāla","start":"08:28","end":"09:47","startHours":8.47389164860354,"endHours":9.777416534199006,"quality":"inauspicious"},{"name":"Śubha","start":"09:47","end":"11:05","startHours":9.777416534199006,"endHours":11.08094141979447,"quality":"auspicious"},{"name":"Roga","start":"11:05","end":"12:23","startHours":11.08094141979447,"endHours":12.384466305389935,"quality":"inauspicious"},{"name":"Udveg","start":"12:23","end":"13:41","startHours":12.384466305389935,"endHours":13.6879911909854,"quality":"inauspicious"},{"name":"Chala","start":"13:41","end":"14:59","startHours":13.6879911909854,"endHours":14.991516076580865,"quality":"neutral"},{"name":"Labha","start":"14:59","end":"16:18","startHours":14.991516076580865,"endHours":16.29504096217633,"quality":"auspicious"},{"name":"Amṛta","start":"16:18","end":"17:36","startHours":16.29504096217633,"endHours":17.598565847771795,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:36","end":"19:18","startHours":17.598565847771795,"endHours":19.29504096217633,"quality":"neutral"},{"name":"Labha","start":"19:18","end":"20:59","startHours":19.29504096217633,"endHours":20.991516076580865,"quality":"auspicious"},{"name":"Amṛta","start":"20:59","end":"22:41","startHours":20.991516076580865,"endHours":22.6879911909854,"quality":"auspicious"},{"name":"Kāla","start":"22:41","end":"00:23","startHours":22.6879911909854,"endHours":24.384466305389935,"quality":"inauspicious"},{"name":"Śubha","start":"00:23","end":"02:05","startHours":24.384466305389935,"endHours":26.08094141979447,"quality":"auspicious"},{"name":"Roga","start":"02:05","end":"03:47","startHours":26.08094141979447,"endHours":27.777416534199006,"quality":"inauspicious"},{"name":"Udveg","start":"03:47","end":"05:28","startHours":27.777416534199006,"endHours":29.47389164860354,"quality":"inauspicious"},{"name":"Chala","start":"05:28","end":"07:10","startHours":29.47389164860354,"endHours":31.170366763008076,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:10","end":"08:10","startHours":7.170366763008075,"endHours":8.170366763008076,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:10","end":"09:10","startHours":8.170366763008076,"endHours":9.170366763008076,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:10","end":"10:10","startHours":9.170366763008076,"endHours":10.170366763008076,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:10","end":"11:10","startHours":10.170366763008076,"endHours":11.170366763008076,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:10","end":"12:10","startHours":11.170366763008076,"endHours":12.170366763008076,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:10","end":"13:10","startHours":12.170366763008076,"endHours":13.170366763008076,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:10","end":"14:10","startHours":13.170366763008076,"endHours":14.170366763008076,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:10","end":"15:10","startHours":14.170366763008076,"endHours":15.170366763008076,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:10","end":"16:10","startHours":15.170366763008076,"endHours":16.170366763008076,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:10","end":"17:10","startHours":16.170366763008076,"endHours":17.170366763008076,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:10","end":"18:10","startHours":17.170366763008076,"endHours":18.170366763008076,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:10","end":"19:10","startHours":18.170366763008076,"endHours":19.170366763008076,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:10","end":"20:10","startHours":19.170366763008076,"endHours":20.170366763008076,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:10","end":"21:10","startHours":20.170366763008076,"endHours":21.170366763008076,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:10","end":"22:10","startHours":21.170366763008076,"endHours":22.170366763008076,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:10","end":"23:10","startHours":22.170366763008076,"endHours":23.170366763008076,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:10","end":"00:10","startHours":23.170366763008076,"endHours":24.170366763008076,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:10","end":"01:10","startHours":24.170366763008076,"endHours":25.170366763008076,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:10","end":"02:10","startHours":25.170366763008076,"endHours":26.170366763008076,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:10","end":"03:10","startHours":26.170366763008076,"endHours":27.170366763008076,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:10","end":"04:10","startHours":27.170366763008076,"endHours":28.170366763008076,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:10","end":"05:10","startHours":28.170366763008076,"endHours":29.170366763008076,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:10","end":"06:10","startHours":29.170366763008076,"endHours":30.170366763008076,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:10","end":"07:10","startHours":30.170366763008076,"endHours":31.170366763008076,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.050415814768918,"eotMinutes":-3.705178323396069,"ayanamsa":25.683}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Dvitīyā · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"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,"location_specific":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 1, 2131 CE · Vṛndāvana · Vidhyamitra","description":"January 1, 2131 CE for Vṛndāvana: Śukla Dvitīyā, sūryodaya 07:10, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2131-01-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2131-01-01","sa":"https://sa.vidhyamitra.com/city/vrindavan/2131-01-01","hi":"https://hi.vidhyamitra.com/city/vrindavan/2131-01-01","x-default":"https://vidhyamitra.com/city/vrindavan/2131-01-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T05:01:49.496Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-23T05:01:49.496Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T05:01:49.496Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}