{"id":"vidhyamitra:city-day:noida:1981-01-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/noida/1981-01-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-10","date_display":"January 10, 1981 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":1981,"month":1,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444614.770833,"kali_year":5082,"ahargana":1856149.2708,"sun":{"sidereal_longitude":266.0202,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":312.02,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.9998,"elapsed_within_tithi_degrees":9.9998},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":312.02,"elapsed_within_degrees":5.3533},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":218.0402},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1981,"month":1,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444614.770833,"ahargana":1856149.2708,"kali_year":5082,"ayanamsa_lahiri":23.5879,"grahas":{"sun":{"sidereal_longitude":266.127696,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":312.226496,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":-1.5186},"mars":{"sidereal_longitude":284.673896,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":272.36079600000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.503196,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":245.12879599999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":165.891296,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.2792,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.2792,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":1,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444614.770833,"kali_year":5082,"ahargana":1856149.2708,"sun":{"sidereal_longitude":266.0202,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":312.02,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.9998,"elapsed_within_tithi_degrees":9.9998},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":312.02,"elapsed_within_degrees":5.3533},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":218.0402},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.519,"elongation":46},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.519,"opposition_distance":134}},"eclipse_window_40days":[{"offset_days":10,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"07:14","sunsetLocal":"17:41","solarNoonLocal":"12:28","dayLengthHours":10.448351480916067,"dayLengthDisplay":"10 Hours 26 Mins 54 Secs","nightLengthDisplay":"13 Hours 33 Mins 06 Secs","moonriseLocal":"09:50","moonsetLocal":"21:14","rahuKala":{"name":"Rāhu Kāla","start":"09:51","end":"11:10","startHours":9.853500860180414,"endHours":11.159544795294924,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:46","end":"15:05","startHours":13.77163266552394,"endHours":15.077676600638448,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:14","end":"08:33","startHours":7.241412989951399,"endHours":8.547456925065907,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:41","end":"10:02","startHours":9.679361668831813,"endHours":10.027640051529016,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:41","end":"07:57","startHours":7.676760968322902,"endHours":7.955383674480664,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:07","end":"12:49","startHours":12.11731034771223,"endHours":12.813867113106635,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:51","end":"06:33","startHours":5.84829945916259,"endHours":6.544856224556995,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:22","end":"07:14","startHours":6.370717033208393,"endHours":7.241412989951399,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:54","startHours":14.206980643895443,"endHours":14.903537409289848,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:29","end":"17:53","startHours":17.489764470867467,"endHours":17.889764470867465,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:41","end":"18:08","startHours":17.689764470867466,"endHours":18.12511244923897,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:26","end":"19:11","startHours":17.439764470867466,"endHours":19.189764470867466,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:07","end":"00:49","startHours":24.11731034771223,"endHours":24.813867113106635,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:14","end":"08:33","startHours":7.241412989951399,"endHours":8.547456925065907,"quality":"inauspicious"},{"name":"Śubha","start":"08:33","end":"09:51","startHours":8.547456925065907,"endHours":9.853500860180414,"quality":"auspicious"},{"name":"Roga","start":"09:51","end":"11:10","startHours":9.853500860180414,"endHours":11.159544795294924,"quality":"inauspicious"},{"name":"Udveg","start":"11:10","end":"12:28","startHours":11.159544795294924,"endHours":12.465588730409433,"quality":"inauspicious"},{"name":"Chala","start":"12:28","end":"13:46","startHours":12.465588730409433,"endHours":13.77163266552394,"quality":"neutral"},{"name":"Labha","start":"13:46","end":"15:05","startHours":13.77163266552394,"endHours":15.077676600638448,"quality":"auspicious"},{"name":"Amṛta","start":"15:05","end":"16:23","startHours":15.077676600638448,"endHours":16.383720535752957,"quality":"auspicious"},{"name":"Kāla","start":"16:23","end":"17:41","startHours":16.383720535752957,"endHours":17.689764470867466,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:41","end":"19:23","startHours":17.689764470867466,"endHours":19.383720535752957,"quality":"auspicious"},{"name":"Amṛta","start":"19:23","end":"21:05","startHours":19.383720535752957,"endHours":21.077676600638448,"quality":"auspicious"},{"name":"Kāla","start":"21:05","end":"22:46","startHours":21.077676600638448,"endHours":22.771632665523942,"quality":"inauspicious"},{"name":"Śubha","start":"22:46","end":"00:28","startHours":22.771632665523942,"endHours":24.465588730409433,"quality":"auspicious"},{"name":"Roga","start":"00:28","end":"02:10","startHours":24.465588730409433,"endHours":26.159544795294924,"quality":"inauspicious"},{"name":"Udveg","start":"02:10","end":"03:51","startHours":26.159544795294924,"endHours":27.853500860180418,"quality":"inauspicious"},{"name":"Chala","start":"03:51","end":"05:33","startHours":27.853500860180418,"endHours":29.54745692506591,"quality":"neutral"},{"name":"Labha","start":"05:33","end":"07:14","startHours":29.54745692506591,"endHours":31.2414129899514,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.241412989951399,"endHours":8.2414129899514,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.2414129899514,"endHours":9.2414129899514,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.2414129899514,"endHours":10.2414129899514,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.2414129899514,"endHours":11.2414129899514,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.2414129899514,"endHours":12.2414129899514,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.2414129899514,"endHours":13.2414129899514,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.2414129899514,"endHours":14.2414129899514,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.2414129899514,"endHours":15.2414129899514,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.2414129899514,"endHours":16.2414129899514,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.2414129899514,"endHours":17.2414129899514,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.2414129899514,"endHours":18.2414129899514,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.2414129899514,"endHours":19.2414129899514,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.2414129899514,"endHours":20.2414129899514,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.2414129899514,"endHours":21.2414129899514,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.2414129899514,"endHours":22.2414129899514,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.2414129899514,"endHours":23.2414129899514,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.2414129899514,"endHours":24.2414129899514,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.2414129899514,"endHours":25.2414129899514,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.2414129899514,"endHours":26.2414129899514,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.2414129899514,"endHours":27.2414129899514,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.2414129899514,"endHours":28.2414129899514,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.2414129899514,"endHours":29.2414129899514,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.2414129899514,"endHours":30.2414129899514,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.2414129899514,"endHours":31.2414129899514,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"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":-21.988277542781915,"eotMinutes":-7.499323824565993,"ayanamsa":23.5879}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"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},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"noida"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 10, 1981 CE · Noida, Uttar Pradesh · Vidhyamitra","description":"January 10, 1981 CE for Noida, Uttar Pradesh: Śukla Caturthī, sūryodaya 07:14, sūryāsta 17:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/noida/1981-01-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/noida/1981-01-10","sa":"https://sa.vidhyamitra.com/city/noida/1981-01-10","hi":"https://hi.vidhyamitra.com/city/noida/1981-01-10","x-default":"https://vidhyamitra.com/city/noida/1981-01-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T10:59:36.171Z","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":"2026-05-19T10:59:36.171Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T10:59:36.171Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}