{"id":"vidhyamitra:city-day:rishikesh:1981-01-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-01-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-26","date_display":"January 26, 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":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444630.770833,"kali_year":5082,"ahargana":1856165.2708,"sun":{"sidereal_longitude":282.4362,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":170.5314,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.0952,"elapsed_within_tithi_degrees":8.0952},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.5314,"elapsed_within_degrees":10.5314},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.9676},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":1981,"month":1,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444630.770833,"ahargana":1856165.2708,"kali_year":5082,"ayanamsa_lahiri":23.5886,"grahas":{"sun":{"sidereal_longitude":282.41478499999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":169.15298499999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":3.8602},"mars":{"sidereal_longitude":297.297585,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":298.86728500000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.84988499999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":265.157385,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":165.91828499999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":111.4315,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":291.4315,"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":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444630.770833,"kali_year":5082,"ahargana":1856165.2708,"sun":{"sidereal_longitude":282.4362,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":170.5314,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.0952,"elapsed_within_tithi_degrees":8.0952},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.5314,"elapsed_within_degrees":10.5314},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.9676},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.86,"elongation":111.905},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.86,"opposition_distance":68.095}},"eclipse_window_40days":[{"offset_days":-6,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":10,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"sunriseLocal":"07:11","sunsetLocal":"17:48","solarNoonLocal":"12:29","dayLengthHours":10.624018437480702,"dayLengthDisplay":"10 Hours 37 Mins 26 Secs","nightLengthDisplay":"13 Hours 22 Mins 34 Secs","moonriseLocal":"23:05","moonsetLocal":"10:47","rahuKala":{"name":"Rāhu Kāla","start":"08:30","end":"09:50","startHours":8.507199510171915,"endHours":9.835201814857003,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:10","end":"12:29","startHours":11.16320411954209,"endHours":12.49120642422718,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:49","end":"15:09","startHours":13.819208728912265,"endHours":15.147211033597355,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:01","startHours":9.658134840898992,"endHours":10.012268788815014,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:37","end":"07:54","startHours":7.621864640381857,"endHours":7.905171798714676,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:51","startHours":12.137072476311156,"endHours":12.845340372143204,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:28","startHours":5.762661413822734,"endHours":6.470929309654781,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:18","end":"07:11","startHours":6.293862335696769,"endHours":7.179197205486828,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:16","end":"14:58","startHours":14.261876163807296,"endHours":14.970144059639342,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:36","end":"18:00","startHours":17.60321564296753,"endHours":18.00321564296753,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:48","end":"18:15","startHours":17.80321564296753,"endHours":18.24588307786256,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:33","end":"19:18","startHours":17.55321564296753,"endHours":19.30321564296753,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:51","startHours":24.137072476311157,"endHours":24.845340372143202,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:11","end":"08:30","startHours":7.179197205486828,"endHours":8.507199510171915,"quality":"auspicious"},{"name":"Kāla","start":"08:30","end":"09:50","startHours":8.507199510171915,"endHours":9.835201814857003,"quality":"inauspicious"},{"name":"Śubha","start":"09:50","end":"11:10","startHours":9.835201814857003,"endHours":11.16320411954209,"quality":"auspicious"},{"name":"Roga","start":"11:10","end":"12:29","startHours":11.16320411954209,"endHours":12.49120642422718,"quality":"inauspicious"},{"name":"Udveg","start":"12:29","end":"13:49","startHours":12.49120642422718,"endHours":13.819208728912265,"quality":"inauspicious"},{"name":"Chala","start":"13:49","end":"15:09","startHours":13.819208728912265,"endHours":15.147211033597355,"quality":"neutral"},{"name":"Labha","start":"15:09","end":"16:29","startHours":15.147211033597355,"endHours":16.475213338282444,"quality":"auspicious"},{"name":"Amṛta","start":"16:29","end":"17:48","startHours":16.475213338282444,"endHours":17.80321564296753,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:48","end":"19:29","startHours":17.80321564296753,"endHours":19.47521333828244,"quality":"neutral"},{"name":"Labha","start":"19:29","end":"21:09","startHours":19.47521333828244,"endHours":21.147211033597355,"quality":"auspicious"},{"name":"Amṛta","start":"21:09","end":"22:49","startHours":21.147211033597355,"endHours":22.819208728912265,"quality":"auspicious"},{"name":"Kāla","start":"22:49","end":"00:29","startHours":22.819208728912265,"endHours":24.49120642422718,"quality":"inauspicious"},{"name":"Śubha","start":"00:29","end":"02:10","startHours":24.49120642422718,"endHours":26.16320411954209,"quality":"auspicious"},{"name":"Roga","start":"02:10","end":"03:50","startHours":26.16320411954209,"endHours":27.835201814857,"quality":"inauspicious"},{"name":"Udveg","start":"03:50","end":"05:30","startHours":27.835201814857,"endHours":29.507199510171915,"quality":"inauspicious"},{"name":"Chala","start":"05:30","end":"07:11","startHours":29.507199510171915,"endHours":31.17919720548683,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.179197205486828,"endHours":8.179197205486828,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.179197205486828,"endHours":9.179197205486828,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.179197205486828,"endHours":10.179197205486828,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.179197205486828,"endHours":11.179197205486828,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.179197205486828,"endHours":12.179197205486828,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.179197205486828,"endHours":13.179197205486828,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.179197205486828,"endHours":14.179197205486828,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.179197205486828,"endHours":15.179197205486828,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.179197205486828,"endHours":16.17919720548683,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.17919720548683,"endHours":17.17919720548683,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.17919720548683,"endHours":18.17919720548683,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.17919720548683,"endHours":19.17919720548683,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.17919720548683,"endHours":20.17919720548683,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.17919720548683,"endHours":21.17919720548683,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.17919720548683,"endHours":22.17919720548683,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.17919720548683,"endHours":23.17919720548683,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.17919720548683,"endHours":24.17919720548683,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.17919720548683,"endHours":25.17919720548683,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.17919720548683,"endHours":26.17919720548683,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.17919720548683,"endHours":27.17919720548683,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.17919720548683,"endHours":28.17919720548683,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.17919720548683,"endHours":29.17919720548683,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.17919720548683,"endHours":30.17919720548683,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.17919720548683,"endHours":31.17919720548683,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-18.76930538468594,"eotMinutes":-12.542785453630707,"ayanamsa":23.5886}},"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 Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Ṣaṣṭhī · 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":"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 26, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"January 26, 1981 CE for Ṛṣikeśa: Kṛṣṇa Ṣaṣṭhī, sūryodaya 07:11, sūryāsta 17:48.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-01-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-01-26","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-01-26","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-01-26","x-default":"https://vidhyamitra.com/city/rishikesh/1981-01-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T20:01:43.285Z","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":"2026-05-18T20:01:43.285Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T20:01:43.285Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}