{"id":"vidhyamitra:city-day:rishikesh:1987-10-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1987-10-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-10-26","date_display":"October 26, 1987 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":1987,"month":10,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447094.770833,"kali_year":5089,"ahargana":1858629.2708,"sun":{"sidereal_longitude":187.7266,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":228.9485,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.2218,"elapsed_within_tithi_degrees":5.2218},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":228.9485,"elapsed_within_degrees":2.2818},"yoga":{"number":5,"name":"Śobhana","sum_longitude":56.6751},"karana":{"half_tithi_index":6,"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":1987,"month":10,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447094.770833,"ahargana":1858629.2708,"kali_year":5089,"ayanamsa_lahiri":23.6828,"grahas":{"sun":{"sidereal_longitude":188.40474199999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":230.22554200000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":-4.1738},"mars":{"sidereal_longitude":167.580242,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":193.95624199999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":0.6979420000000118,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":205.39934199999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":233.97124200000007,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":340.8769,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":160.8769,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":1987,"month":10,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447094.770833,"kali_year":5089,"ahargana":1858629.2708,"sun":{"sidereal_longitude":187.7266,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":228.9485,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.2218,"elapsed_within_tithi_degrees":5.2218},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1,"moon_longitude":228.9485,"elapsed_within_degrees":2.2818},"yoga":{"number":5,"name":"Śobhana","sum_longitude":56.6751},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.174,"elongation":41.222},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.174,"opposition_distance":138.778}},"eclipse_window_40days":[{"offset_days":-19,"type":"lunar","occurs":true,"moon_latitude":0.545,"opposition_distance":0.003}]},"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":"06:25","sunsetLocal":"17:36","solarNoonLocal":"12:01","dayLengthHours":11.17295807688052,"dayLengthDisplay":"11 Hours 10 Mins 23 Secs","nightLengthDisplay":"12 Hours 49 Mins 37 Secs","moonriseLocal":"09:40","moonsetLocal":"19:55","rahuKala":{"name":"Rāhu Kāla","start":"07:49","end":"09:13","startHours":7.820563724663914,"endHours":9.217183484273978,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:37","end":"12:01","startHours":10.613803243884043,"endHours":12.010423003494108,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:24","end":"14:48","startHours":13.407042763104172,"endHours":14.803662522714237,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:24","startHours":9.030967516325969,"endHours":9.403399452221986,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:53","end":"07:11","startHours":6.88948388492387,"endHours":7.187429433640684,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:23","startHours":11.63799106759809,"endHours":12.382854939390125,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:56","end":"05:41","startHours":4.93421622146978,"endHours":5.679080093261814,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:30","end":"06:25","startHours":5.4928641253138055,"endHours":6.423943965053849,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:37","startHours":13.872582682974194,"endHours":14.617446554766229,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:24","end":"17:48","startHours":17.396902041934368,"endHours":17.796902041934366,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:36","end":"18:04","startHours":17.596902041934367,"endHours":18.06244196180439,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:21","end":"19:06","startHours":17.346902041934367,"endHours":19.096902041934367,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:23","startHours":23.63799106759809,"endHours":24.382854939390125,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:25","end":"07:49","startHours":6.423943965053849,"endHours":7.820563724663914,"quality":"auspicious"},{"name":"Kāla","start":"07:49","end":"09:13","startHours":7.820563724663914,"endHours":9.217183484273978,"quality":"inauspicious"},{"name":"Śubha","start":"09:13","end":"10:37","startHours":9.217183484273978,"endHours":10.613803243884043,"quality":"auspicious"},{"name":"Roga","start":"10:37","end":"12:01","startHours":10.613803243884043,"endHours":12.010423003494108,"quality":"inauspicious"},{"name":"Udveg","start":"12:01","end":"13:24","startHours":12.010423003494108,"endHours":13.407042763104172,"quality":"inauspicious"},{"name":"Chala","start":"13:24","end":"14:48","startHours":13.407042763104172,"endHours":14.803662522714237,"quality":"neutral"},{"name":"Labha","start":"14:48","end":"16:12","startHours":14.803662522714237,"endHours":16.200282282324302,"quality":"auspicious"},{"name":"Amṛta","start":"16:12","end":"17:36","startHours":16.200282282324302,"endHours":17.596902041934367,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:36","end":"19:12","startHours":17.596902041934367,"endHours":19.200282282324302,"quality":"neutral"},{"name":"Labha","start":"19:12","end":"20:48","startHours":19.200282282324302,"endHours":20.803662522714237,"quality":"auspicious"},{"name":"Amṛta","start":"20:48","end":"22:24","startHours":20.803662522714237,"endHours":22.407042763104172,"quality":"auspicious"},{"name":"Kāla","start":"22:24","end":"00:01","startHours":22.407042763104172,"endHours":24.010423003494108,"quality":"inauspicious"},{"name":"Śubha","start":"00:01","end":"01:37","startHours":24.010423003494108,"endHours":25.613803243884043,"quality":"auspicious"},{"name":"Roga","start":"01:37","end":"03:13","startHours":25.613803243884043,"endHours":27.217183484273978,"quality":"inauspicious"},{"name":"Udveg","start":"03:13","end":"04:49","startHours":27.217183484273978,"endHours":28.820563724663913,"quality":"inauspicious"},{"name":"Chala","start":"04:49","end":"06:25","startHours":28.820563724663913,"endHours":30.423943965053848,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.423943965053849,"endHours":7.423943965053849,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.423943965053849,"endHours":8.423943965053848,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.423943965053848,"endHours":9.423943965053848,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.423943965053848,"endHours":10.423943965053848,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.423943965053848,"endHours":11.423943965053848,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.423943965053848,"endHours":12.423943965053848,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.423943965053848,"endHours":13.423943965053848,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.423943965053848,"endHours":14.423943965053848,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.423943965053848,"endHours":15.423943965053848,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.423943965053848,"endHours":16.423943965053848,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.423943965053848,"endHours":17.423943965053848,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.423943965053848,"endHours":18.423943965053848,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.423943965053848,"endHours":19.423943965053848,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.423943965053848,"endHours":20.423943965053848,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.423943965053848,"endHours":21.423943965053848,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.423943965053848,"endHours":22.423943965053848,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.423943965053848,"endHours":23.423943965053848,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.423943965053848,"endHours":24.423943965053848,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.423943965053848,"endHours":25.423943965053848,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.423943965053848,"endHours":26.423943965053848,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.423943965053848,"endHours":27.423943965053848,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.423943965053848,"endHours":28.423943965053848,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.423943965053848,"endHours":29.423943965053848,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.423943965053848,"endHours":30.423943965053848,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.197444439367521,"eotMinutes":16.304219790353635,"ayanamsa":23.6828}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Caturthī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"festivals":[{"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":"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5}]},"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 October 26, 1987 CE · Ṛṣikeśa · Vidhyamitra","description":"October 26, 1987 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 06:25, sūryāsta 17:36.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1987-10-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1987-10-26","sa":"https://sa.vidhyamitra.com/city/rishikesh/1987-10-26","hi":"https://hi.vidhyamitra.com/city/rishikesh/1987-10-26","x-default":"https://vidhyamitra.com/city/rishikesh/1987-10-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T17:19:40.889Z","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":"2026-05-31T17:19:40.889Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T17:19:40.889Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}