{"id":"vidhyamitra:city-day:shimla:1981-08-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/shimla/1981-08-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-15","date_display":"August 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":8,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444831.770833,"kali_year":5083,"ahargana":1856366.2708,"sun":{"sidereal_longitude":117.9705,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":289.1876,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":171.2171,"elapsed_within_tithi_degrees":3.2171},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":289.1876,"elapsed_within_degrees":9.1876},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":47.1581},"karana":{"half_tithi_index":28,"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":8,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444831.770833,"ahargana":1856366.2708,"kali_year":5083,"ayanamsa_lahiri":23.5962,"grahas":{"sun":{"sidereal_longitude":118.53990499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":290.396705,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false,"latitude":-0.6572},"mars":{"sidereal_longitude":85.03240499999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":123.779605,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":165.18000500000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":152.451005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":162.959205,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":100.7815,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.7815,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":8,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444831.770833,"kali_year":5083,"ahargana":1856366.2708,"sun":{"sidereal_longitude":117.9705,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":289.1876,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":171.2171,"elapsed_within_tithi_degrees":3.2171},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":289.1876,"elapsed_within_degrees":9.1876},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":47.1581},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.657,"elongation":171.217},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.657,"opposition_distance":8.783}},"eclipse_window_40days":[{"offset_days":-15,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:46","sunsetLocal":"19:04","solarNoonLocal":"12:25","dayLengthHours":13.300368612518414,"dayLengthDisplay":"13 Hours 18 Mins 01 Secs","nightLengthDisplay":"10 Hours 41 Mins 59 Secs","moonriseLocal":"18:32","moonsetLocal":"05:14","rahuKala":{"name":"Rāhu Kāla","start":"09:06","end":"10:46","startHours":9.099626308980872,"endHours":10.762172385545675,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:05","end":"15:45","startHours":14.087264538675278,"endHours":15.74981061524008,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:46","end":"07:26","startHours":5.774534155851269,"endHours":7.43708023241607,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:19","startHours":8.877953498772232,"endHours":9.321299119189511,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:20","end":"06:41","startHours":6.32871618137287,"endHours":6.683392677706694,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:52","startHours":11.981372841693195,"endHours":12.868064082527757,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:00","end":"04:53","startHours":4.001151674182147,"endHours":4.887842915016708,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:40","end":"05:46","startHours":4.666170104808067,"endHours":5.774534155851269,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:38","end":"15:32","startHours":14.641446564196878,"endHours":15.528137805031438,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:52","end":"19:16","startHours":18.874902768369683,"endHours":19.27490276836968,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:04","end":"19:38","startHours":19.074902768369682,"endHours":19.629084793891284,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:49","end":"20:34","startHours":18.824902768369682,"endHours":20.574902768369682,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:52","startHours":23.981372841693197,"endHours":24.868064082527756,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:46","end":"07:26","startHours":5.774534155851269,"endHours":7.43708023241607,"quality":"inauspicious"},{"name":"Śubha","start":"07:26","end":"09:06","startHours":7.43708023241607,"endHours":9.099626308980872,"quality":"auspicious"},{"name":"Roga","start":"09:06","end":"10:46","startHours":9.099626308980872,"endHours":10.762172385545675,"quality":"inauspicious"},{"name":"Udveg","start":"10:46","end":"12:25","startHours":10.762172385545675,"endHours":12.424718462110476,"quality":"inauspicious"},{"name":"Chala","start":"12:25","end":"14:05","startHours":12.424718462110476,"endHours":14.087264538675278,"quality":"neutral"},{"name":"Labha","start":"14:05","end":"15:45","startHours":14.087264538675278,"endHours":15.74981061524008,"quality":"auspicious"},{"name":"Amṛta","start":"15:45","end":"17:25","startHours":15.74981061524008,"endHours":17.41235669180488,"quality":"auspicious"},{"name":"Kāla","start":"17:25","end":"19:04","startHours":17.41235669180488,"endHours":19.074902768369682,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:04","end":"20:25","startHours":19.074902768369682,"endHours":20.41235669180488,"quality":"auspicious"},{"name":"Amṛta","start":"20:25","end":"21:45","startHours":20.41235669180488,"endHours":21.74981061524008,"quality":"auspicious"},{"name":"Kāla","start":"21:45","end":"23:05","startHours":21.74981061524008,"endHours":23.087264538675278,"quality":"inauspicious"},{"name":"Śubha","start":"23:05","end":"00:25","startHours":23.087264538675278,"endHours":24.424718462110476,"quality":"auspicious"},{"name":"Roga","start":"00:25","end":"01:46","startHours":24.424718462110476,"endHours":25.762172385545675,"quality":"inauspicious"},{"name":"Udveg","start":"01:46","end":"03:06","startHours":25.762172385545675,"endHours":27.099626308980874,"quality":"inauspicious"},{"name":"Chala","start":"03:06","end":"04:26","startHours":27.099626308980874,"endHours":28.437080232416072,"quality":"neutral"},{"name":"Labha","start":"04:26","end":"05:46","startHours":28.437080232416072,"endHours":29.77453415585127,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:46","end":"06:46","startHours":5.774534155851269,"endHours":6.774534155851269,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:46","end":"07:46","startHours":6.774534155851269,"endHours":7.774534155851269,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:46","end":"08:46","startHours":7.774534155851269,"endHours":8.774534155851269,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:46","end":"09:46","startHours":8.774534155851269,"endHours":9.774534155851269,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:46","end":"10:46","startHours":9.774534155851269,"endHours":10.774534155851269,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:46","end":"11:46","startHours":10.774534155851269,"endHours":11.774534155851269,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:46","end":"12:46","startHours":11.774534155851269,"endHours":12.774534155851269,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:46","end":"13:46","startHours":12.774534155851269,"endHours":13.774534155851269,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:46","end":"14:46","startHours":13.774534155851269,"endHours":14.774534155851269,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:46","end":"15:46","startHours":14.774534155851269,"endHours":15.774534155851269,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:46","end":"16:46","startHours":15.774534155851269,"endHours":16.77453415585127,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:46","end":"17:46","startHours":16.77453415585127,"endHours":17.77453415585127,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:46","end":"18:46","startHours":17.77453415585127,"endHours":18.77453415585127,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:46","end":"19:46","startHours":18.77453415585127,"endHours":19.77453415585127,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:46","end":"20:46","startHours":19.77453415585127,"endHours":20.77453415585127,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:46","end":"21:46","startHours":20.77453415585127,"endHours":21.77453415585127,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:46","end":"22:46","startHours":21.77453415585127,"endHours":22.77453415585127,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:46","end":"23:46","startHours":22.77453415585127,"endHours":23.77453415585127,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:46","end":"00:46","startHours":23.77453415585127,"endHours":24.77453415585127,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:46","end":"01:46","startHours":24.77453415585127,"endHours":25.77453415585127,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:46","end":"02:46","startHours":25.77453415585127,"endHours":26.77453415585127,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:46","end":"03:46","startHours":26.77453415585127,"endHours":27.77453415585127,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:46","end":"04:46","startHours":27.77453415585127,"endHours":28.77453415585127,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:46","end":"05:46","startHours":28.77453415585127,"endHours":29.77453415585127,"planetary_lord":"Mercury"}],"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","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.13003216828694,"eotMinutes":-4.176707726628523,"ayanamsa":23.5962}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Pūrṇimā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"raksha-bandhana","name":"Rakṣā Bandhana / Śrāvaṇa Pūrṇimā","name_sanskrit":"रक्षा बन्धन","tradition":"Pan-Hindu","significance":"Sister-brother bond; Brāhmaṇa Upākarma.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":1},{"id":"jhulan-purnima","name":"Jhūlan Pūrṇimā (Rādhā-Krishna swing)","name_sanskrit":"झूलन पूर्णिमा","tradition":"Vaishnava","associated_deity":"Rādhā-Krishna","significance":"Rādhā-Krishna swing-līlā festival; Jhūlan-yātrā culmination.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":3},{"id":"upakarman-rigveda","name":"Ṛg-Veda Upākarman","name_sanskrit":"ऋग्वेद उपाकर्मन्","tradition":"Smarta","associated_deity":"Ṛṣi-paramparā","significance":"Annual renewal of Veda-svādhyāya for Ṛg-Vedīs. Śrāvaṇa Pūrṇimā.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":3},{"id":"upakarman-yajurveda","name":"Yajur-Veda Upākarman","name_sanskrit":"यजुर्वेद उपाकर्मन्","tradition":"Smarta","significance":"Annual renewal of Veda-svādhyāya for Yajur-Vedīs.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":3},{"id":"hayagriva-jayanti","name":"Hayagrīva Jayantī","name_sanskrit":"हयग्रीव जयन्ती","tradition":"Vaishnava","associated_deity":"Hayagrīva (Knowledge-form of Bhagavān)","significance":"Bhagavān as Hayagrīva restored the Vedas to Brahmā. Vidyā-pradāyaka.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":4,"sources":["Devī-Bhāgavata, Hayagrīva-stotra"]}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"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 August 15, 1981 CE · Shimla, Himachal Pradesh · Vidhyamitra","description":"August 15, 1981 CE for Shimla, Himachal Pradesh: Śukla Pūrṇimā, sūryodaya 05:46, sūryāsta 19:04.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/shimla/1981-08-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/shimla/1981-08-15","sa":"https://sa.vidhyamitra.com/city/shimla/1981-08-15","hi":"https://hi.vidhyamitra.com/city/shimla/1981-08-15","x-default":"https://vidhyamitra.com/city/shimla/1981-08-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T22:09:58.200Z","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":"2026-06-02T22:09:58.200Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T22:09:58.200Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}