{"id":"vidhyamitra:city-day:noida:1981-01-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/noida/1981-01-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-15","date_display":"January 15, 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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444619.770833,"kali_year":5082,"ahargana":1856154.2708,"sun":{"sidereal_longitude":271.1563,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":23.4808,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.3245,"elapsed_within_tithi_degrees":4.3245},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":23.4808,"elapsed_within_degrees":10.1474},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.637},"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":1981,"month":1,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444619.770833,"ahargana":1856154.2708,"kali_year":5082,"ayanamsa_lahiri":23.5881,"grahas":{"sun":{"sidereal_longitude":271.22160499999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":22.534505000000024,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false,"latitude":-4.4985},"mars":{"sidereal_longitude":288.61330499999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":280.735905,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":166.69760499999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":251.38530500000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.94940499999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.0143,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.0143,"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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444619.770833,"kali_year":5082,"ahargana":1856154.2708,"sun":{"sidereal_longitude":271.1563,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":23.4808,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":112.3245,"elapsed_within_tithi_degrees":4.3245},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4,"moon_longitude":23.4808,"elapsed_within_degrees":10.1474},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.637},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.499,"elongation":112.324},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.499,"opposition_distance":67.676}},"eclipse_window_40days":[{"offset_days":5,"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":"17:45","solarNoonLocal":"12:30","dayLengthHours":10.518130081374867,"dayLengthDisplay":"10 Hours 31 Mins 05 Secs","nightLengthDisplay":"13 Hours 28 Mins 55 Secs","moonriseLocal":"13:15","moonsetLocal":"02:35","rahuKala":{"name":"Rāhu Kāla","start":"13:49","end":"15:08","startHours":13.811198750940747,"endHours":15.125965011112605,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:14","end":"08:33","startHours":7.237367450081455,"endHours":8.552133710253313,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:52","end":"11:11","startHours":9.866899970425171,"endHours":11.18166623059703,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:41","end":"10:03","startHours":9.691597802402256,"endHours":10.042202138448086,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:41","end":"07:57","startHours":7.67562287013874,"endHours":7.956106338975403,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:51","startHours":12.145828154723059,"endHours":12.847036826814715,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:50","end":"06:32","startHours":5.834950105898139,"endHours":6.5361587779897965,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:22","end":"07:14","startHours":6.360856609966882,"endHours":7.237367450081455,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:15","end":"14:57","startHours":14.249454170998032,"endHours":14.95066284308969,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:33","end":"17:57","startHours":17.55549753145632,"endHours":17.95549753145632,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:45","end":"18:12","startHours":17.75549753145632,"endHours":18.193752951513606,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:30","end":"19:15","startHours":17.50549753145632,"endHours":19.25549753145632,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:51","startHours":24.14582815472306,"endHours":24.84703682681472,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:14","end":"08:33","startHours":7.237367450081455,"endHours":8.552133710253313,"quality":"auspicious"},{"name":"Roga","start":"08:33","end":"09:52","startHours":8.552133710253313,"endHours":9.866899970425171,"quality":"inauspicious"},{"name":"Udveg","start":"09:52","end":"11:11","startHours":9.866899970425171,"endHours":11.18166623059703,"quality":"inauspicious"},{"name":"Chala","start":"11:11","end":"12:30","startHours":11.18166623059703,"endHours":12.496432490768889,"quality":"neutral"},{"name":"Labha","start":"12:30","end":"13:49","startHours":12.496432490768889,"endHours":13.811198750940747,"quality":"auspicious"},{"name":"Amṛta","start":"13:49","end":"15:08","startHours":13.811198750940747,"endHours":15.125965011112605,"quality":"auspicious"},{"name":"Kāla","start":"15:08","end":"16:26","startHours":15.125965011112605,"endHours":16.440731271284463,"quality":"inauspicious"},{"name":"Śubha","start":"16:26","end":"17:45","startHours":16.440731271284463,"endHours":17.75549753145632,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:45","end":"19:26","startHours":17.75549753145632,"endHours":19.440731271284463,"quality":"auspicious"},{"name":"Kāla","start":"19:26","end":"21:08","startHours":19.440731271284463,"endHours":21.125965011112605,"quality":"inauspicious"},{"name":"Śubha","start":"21:08","end":"22:49","startHours":21.125965011112605,"endHours":22.811198750940747,"quality":"auspicious"},{"name":"Roga","start":"22:49","end":"00:30","startHours":22.811198750940747,"endHours":24.49643249076889,"quality":"inauspicious"},{"name":"Udveg","start":"00:30","end":"02:11","startHours":24.49643249076889,"endHours":26.18166623059703,"quality":"inauspicious"},{"name":"Chala","start":"02:11","end":"03:52","startHours":26.18166623059703,"endHours":27.86689997042517,"quality":"neutral"},{"name":"Labha","start":"03:52","end":"05:33","startHours":27.86689997042517,"endHours":29.55213371025331,"quality":"auspicious"},{"name":"Amṛta","start":"05:33","end":"07:14","startHours":29.55213371025331,"endHours":31.237367450081454,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.237367450081455,"endHours":8.237367450081454,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.237367450081454,"endHours":9.237367450081454,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.237367450081454,"endHours":10.237367450081454,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.237367450081454,"endHours":11.237367450081454,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.237367450081454,"endHours":12.237367450081454,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.237367450081454,"endHours":13.237367450081454,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.237367450081454,"endHours":14.237367450081454,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.237367450081454,"endHours":15.237367450081454,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.237367450081454,"endHours":16.237367450081454,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.237367450081454,"endHours":17.237367450081454,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.237367450081454,"endHours":18.237367450081454,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.237367450081454,"endHours":19.237367450081454,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.237367450081454,"endHours":20.237367450081454,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.237367450081454,"endHours":21.237367450081454,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.237367450081454,"endHours":22.237367450081454,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.237367450081454,"endHours":23.237367450081454,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.237367450081454,"endHours":24.237367450081454,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.237367450081454,"endHours":25.237367450081454,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.237367450081454,"endHours":26.237367450081454,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.237367450081454,"endHours":27.237367450081454,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.237367450081454,"endHours":28.237367450081454,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.237367450081454,"endHours":29.237367450081454,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.237367450081454,"endHours":30.237367450081454,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.237367450081454,"endHours":31.237367450081454,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"East","rahuVasa":"North-West","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.163115564621055,"eotMinutes":-9.349949446133257,"ayanamsa":23.5881}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"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":[]},"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 15, 1981 CE · Noida, Uttar Pradesh · Vidhyamitra","description":"January 15, 1981 CE for Noida, Uttar Pradesh: Śukla Daśamī, sūryodaya 07:14, sūryāsta 17:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/noida/1981-01-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/noida/1981-01-15","sa":"https://sa.vidhyamitra.com/city/noida/1981-01-15","hi":"https://hi.vidhyamitra.com/city/noida/1981-01-15","x-default":"https://vidhyamitra.com/city/noida/1981-01-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T14:27:06.135Z","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":"2026-05-19T14:27:06.135Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T14:27:06.135Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}