{"id":"vidhyamitra:city-day:shimla:1981-04-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/shimla/1981-04-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-01","date_display":"April 1, 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":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444695.770833,"kali_year":5082,"ahargana":1856230.2708,"sun":{"sidereal_longitude":347.8522,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":298.1353,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":310.2831,"elapsed_within_tithi_degrees":10.2831},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.1353,"elapsed_within_degrees":4.802},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9875},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":4,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444695.770833,"ahargana":1856230.2708,"kali_year":5082,"ayanamsa_lahiri":23.591,"grahas":{"sun":{"sidereal_longitude":347.641901,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":296.26470100000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":-0.7921},"mars":{"sidereal_longitude":348.224101,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":324.8993009999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":161.249101,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":346.307901,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":162.253201,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.9874,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.9874,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444695.770833,"kali_year":5082,"ahargana":1856230.2708,"sun":{"sidereal_longitude":347.8522,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":298.1353,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":310.2831,"elapsed_within_tithi_degrees":10.2831},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.1353,"elapsed_within_degrees":4.802},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9875},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.792,"elongation":49.717},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.792,"opposition_distance":130.283}},"eclipse_window_40days":[]},"city":{"slug":"shimla","name":"Shimla, Himachal Pradesh","lat":31.1048,"lon":77.1734,"tz_offset_hours":5.5,"state":"Himachal Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"shimla","name":"Shimla, Himachal Pradesh","lat":31.1048,"lon":77.1734,"tz_offset_hours":5.5,"state":"Himachal Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"06:11","sunsetLocal":"18:40","solarNoonLocal":"12:26","dayLengthHours":12.488627576197793,"dayLengthDisplay":"12 Hours 29 Mins 19 Secs","nightLengthDisplay":"11 Hours 30 Mins 41 Secs","moonriseLocal":"03:34","moonsetLocal":"14:26","rahuKala":{"name":"Rāhu Kāla","start":"12:26","end":"13:59","startHours":12.427511601685858,"endHours":13.98859004871058,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:45","end":"09:18","startHours":7.744276260611684,"endHours":9.305354707636408,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:52","end":"12:26","startHours":10.866433154661133,"endHours":12.427511601685858,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:06","end":"09:31","startHours":9.09721091469978,"endHours":9.51349850057304,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:42","end":"07:02","startHours":6.703557295928535,"endHours":7.036587364627143,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:51","startHours":12.011224015812598,"endHours":12.843799187559117,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:21","startHours":4.518047470093921,"endHours":5.350622641840441,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:09","end":"06:11","startHours":5.142478848903811,"endHours":6.18319781358696,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:20","startHours":14.508949531052156,"endHours":15.341524702798676,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:28","end":"18:52","startHours":18.471825389784755,"endHours":18.871825389784753,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:40","end":"19:12","startHours":18.671825389784754,"endHours":19.19218487212633,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:25","end":"20:10","startHours":18.421825389784754,"endHours":20.171825389784754,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:51","startHours":24.011224015812598,"endHours":24.843799187559117,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:11","end":"07:45","startHours":6.18319781358696,"endHours":7.744276260611684,"quality":"auspicious"},{"name":"Amṛta","start":"07:45","end":"09:18","startHours":7.744276260611684,"endHours":9.305354707636408,"quality":"auspicious"},{"name":"Kāla","start":"09:18","end":"10:52","startHours":9.305354707636408,"endHours":10.866433154661133,"quality":"inauspicious"},{"name":"Śubha","start":"10:52","end":"12:26","startHours":10.866433154661133,"endHours":12.427511601685858,"quality":"auspicious"},{"name":"Roga","start":"12:26","end":"13:59","startHours":12.427511601685858,"endHours":13.98859004871058,"quality":"inauspicious"},{"name":"Udveg","start":"13:59","end":"15:33","startHours":13.98859004871058,"endHours":15.549668495735304,"quality":"inauspicious"},{"name":"Chala","start":"15:33","end":"17:07","startHours":15.549668495735304,"endHours":17.11074694276003,"quality":"neutral"},{"name":"Labha","start":"17:07","end":"18:40","startHours":17.11074694276003,"endHours":18.671825389784754,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:40","end":"20:07","startHours":18.671825389784754,"endHours":20.11074694276003,"quality":"inauspicious"},{"name":"Chala","start":"20:07","end":"21:33","startHours":20.11074694276003,"endHours":21.549668495735304,"quality":"neutral"},{"name":"Labha","start":"21:33","end":"22:59","startHours":21.549668495735304,"endHours":22.98859004871058,"quality":"auspicious"},{"name":"Amṛta","start":"22:59","end":"00:26","startHours":22.98859004871058,"endHours":24.427511601685858,"quality":"auspicious"},{"name":"Kāla","start":"00:26","end":"01:52","startHours":24.427511601685858,"endHours":25.866433154661134,"quality":"inauspicious"},{"name":"Śubha","start":"01:52","end":"03:18","startHours":25.866433154661134,"endHours":27.30535470763641,"quality":"auspicious"},{"name":"Roga","start":"03:18","end":"04:45","startHours":27.30535470763641,"endHours":28.744276260611684,"quality":"inauspicious"},{"name":"Udveg","start":"04:45","end":"06:11","startHours":28.744276260611684,"endHours":30.18319781358696,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:11","end":"07:11","startHours":6.18319781358696,"endHours":7.18319781358696,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:11","end":"08:11","startHours":7.18319781358696,"endHours":8.183197813586961,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:11","end":"09:11","startHours":8.183197813586961,"endHours":9.183197813586961,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:11","end":"10:11","startHours":9.183197813586961,"endHours":10.183197813586961,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:11","end":"11:11","startHours":10.183197813586961,"endHours":11.183197813586961,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:11","end":"12:11","startHours":11.183197813586961,"endHours":12.183197813586961,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:11","end":"13:11","startHours":12.183197813586961,"endHours":13.183197813586961,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:11","end":"14:11","startHours":13.183197813586961,"endHours":14.183197813586961,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:11","end":"15:11","startHours":14.183197813586961,"endHours":15.183197813586961,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:11","end":"16:11","startHours":15.183197813586961,"endHours":16.18319781358696,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:11","end":"17:11","startHours":16.18319781358696,"endHours":17.18319781358696,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:11","end":"18:11","startHours":17.18319781358696,"endHours":18.18319781358696,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:11","end":"19:11","startHours":18.18319781358696,"endHours":19.18319781358696,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:11","end":"20:11","startHours":19.18319781358696,"endHours":20.18319781358696,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:11","end":"21:11","startHours":20.18319781358696,"endHours":21.18319781358696,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:11","end":"22:11","startHours":21.18319781358696,"endHours":22.18319781358696,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:11","end":"23:11","startHours":22.18319781358696,"endHours":23.18319781358696,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:11","end":"00:11","startHours":23.18319781358696,"endHours":24.18319781358696,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:11","end":"01:11","startHours":24.18319781358696,"endHours":25.18319781358696,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:11","end":"02:11","startHours":25.18319781358696,"endHours":26.18319781358696,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:11","end":"03:11","startHours":26.18319781358696,"endHours":27.18319781358696,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:11","end":"04:11","startHours":27.18319781358696,"endHours":28.18319781358696,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:11","end":"05:11","startHours":28.18319781358696,"endHours":29.18319781358696,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:11","end":"06:11","startHours":29.18319781358696,"endHours":30.18319781358696,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":4.443577456367389,"eotMinutes":-4.344296101151456,"ayanamsa":23.591}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"papamochani-ekadashi","name":"Pāpamocanī Ekādaśī","name_sanskrit":"पापमोचनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Removes mahā-pātakas (great sins).","vrata":true,"detection":{"tithi_number":26,"tithi_paksha":"Kṛṣṇa","lunar_month":"Caitra"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"shimla"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 1, 1981 CE · Shimla, Himachal Pradesh · Vidhyamitra","description":"April 1, 1981 CE for Shimla, Himachal Pradesh: Kṛṣṇa Ekādaśī, sūryodaya 06:11, sūryāsta 18:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/shimla/1981-04-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/shimla/1981-04-01","sa":"https://sa.vidhyamitra.com/city/shimla/1981-04-01","hi":"https://hi.vidhyamitra.com/city/shimla/1981-04-01","x-default":"https://vidhyamitra.com/city/shimla/1981-04-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T19:58:34.429Z","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":"2026-06-02T19:58:34.429Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T19:58:34.429Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}