{"id":"vidhyamitra:city-day:rishikesh:1977-05-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1977-05-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1977-05-12","date_display":"May 12, 1977 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":1977,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443275.770833,"kali_year":5079,"ahargana":1854810.2708,"sun":{"sidereal_longitude":27.7229,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":317.2623,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":289.5394,"elapsed_within_tithi_degrees":1.5394},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.2623,"elapsed_within_degrees":10.5956},"yoga":{"number":26,"name":"Indra","sum_longitude":344.9851},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"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":1977,"month":5,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443275.770833,"ahargana":1854810.2708,"kali_year":5079,"ayanamsa_lahiri":23.5367,"grahas":{"sun":{"sidereal_longitude":27.669956000000013,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":320.05005600000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":3.2334},"mars":{"sidereal_longitude":347.875856,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":11.627955999999983,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":44.569856000000016,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":348.800956,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":107.21455600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":183.2259,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":3.2259,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":1977,"month":5,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443275.770833,"kali_year":5079,"ahargana":1854810.2708,"sun":{"sidereal_longitude":27.7229,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":317.2623,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":289.5394,"elapsed_within_tithi_degrees":1.5394},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.2623,"elapsed_within_degrees":10.5956},"yoga":{"number":26,"name":"Indra","sum_longitude":344.9851},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.233,"elongation":70.461},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.233,"opposition_distance":109.539}},"eclipse_window_40days":[]},"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":"05:26","sunsetLocal":"19:01","solarNoonLocal":"12:13","dayLengthHours":13.58962358274917,"dayLengthDisplay":"13 Hours 35 Mins 23 Secs","nightLengthDisplay":"10 Hours 24 Mins 37 Secs","moonriseLocal":"01:55","moonsetLocal":"13:30","rahuKala":{"name":"Rāhu Kāla","start":"13:55","end":"15:37","startHours":13.918569953182505,"endHours":15.617272901026151,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:26","end":"07:07","startHours":5.425055213964273,"endHours":7.1237581618079195,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:49","end":"10:31","startHours":8.822461109651567,"endHours":10.521164057495213,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:03","startHours":8.595967383272413,"endHours":9.048954836030719,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.991289529912155,"endHours":6.3536794921188,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:40","startHours":11.766879552580553,"endHours":12.672854458097165,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:37","end":"04:31","startHours":3.6131054029310508,"endHours":4.519080308447662,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:26","startHours":4.292586582068509,"endHours":5.425055213964273,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:23","startHours":14.484804269130386,"endHours":15.390779174646998,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:49","end":"19:13","startHours":18.814678796713444,"endHours":19.214678796713443,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:01","end":"19:35","startHours":19.014678796713444,"endHours":19.580913112661325,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:46","end":"20:31","startHours":18.764678796713444,"endHours":20.514678796713444,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:40","startHours":23.766879552580555,"endHours":24.672854458097163,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:26","end":"07:07","startHours":5.425055213964273,"endHours":7.1237581618079195,"quality":"auspicious"},{"name":"Roga","start":"07:07","end":"08:49","startHours":7.1237581618079195,"endHours":8.822461109651567,"quality":"inauspicious"},{"name":"Udveg","start":"08:49","end":"10:31","startHours":8.822461109651567,"endHours":10.521164057495213,"quality":"inauspicious"},{"name":"Chala","start":"10:31","end":"12:13","startHours":10.521164057495213,"endHours":12.219867005338859,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:55","startHours":12.219867005338859,"endHours":13.918569953182505,"quality":"auspicious"},{"name":"Amṛta","start":"13:55","end":"15:37","startHours":13.918569953182505,"endHours":15.617272901026151,"quality":"auspicious"},{"name":"Kāla","start":"15:37","end":"17:19","startHours":15.617272901026151,"endHours":17.315975848869797,"quality":"inauspicious"},{"name":"Śubha","start":"17:19","end":"19:01","startHours":17.315975848869797,"endHours":19.014678796713444,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:01","end":"20:19","startHours":19.014678796713444,"endHours":20.315975848869797,"quality":"auspicious"},{"name":"Kāla","start":"20:19","end":"21:37","startHours":20.315975848869797,"endHours":21.61727290102615,"quality":"inauspicious"},{"name":"Śubha","start":"21:37","end":"22:55","startHours":21.61727290102615,"endHours":22.918569953182505,"quality":"auspicious"},{"name":"Roga","start":"22:55","end":"00:13","startHours":22.918569953182505,"endHours":24.21986700533886,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:31","startHours":24.21986700533886,"endHours":25.521164057495213,"quality":"inauspicious"},{"name":"Chala","start":"01:31","end":"02:49","startHours":25.521164057495213,"endHours":26.822461109651567,"quality":"neutral"},{"name":"Labha","start":"02:49","end":"04:07","startHours":26.822461109651567,"endHours":28.12375816180792,"quality":"auspicious"},{"name":"Amṛta","start":"04:07","end":"05:26","startHours":28.12375816180792,"endHours":29.425055213964274,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:26","end":"06:26","startHours":5.425055213964273,"endHours":6.425055213964273,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:26","end":"07:26","startHours":6.425055213964273,"endHours":7.425055213964273,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:26","end":"08:26","startHours":7.425055213964273,"endHours":8.425055213964274,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:26","end":"09:26","startHours":8.425055213964274,"endHours":9.425055213964274,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:26","end":"10:26","startHours":9.425055213964274,"endHours":10.425055213964274,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:26","end":"11:26","startHours":10.425055213964274,"endHours":11.425055213964274,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:26","end":"12:26","startHours":11.425055213964274,"endHours":12.425055213964274,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:26","end":"13:26","startHours":12.425055213964274,"endHours":13.425055213964274,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:26","end":"14:26","startHours":13.425055213964274,"endHours":14.425055213964274,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:26","end":"15:26","startHours":14.425055213964274,"endHours":15.425055213964274,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:26","end":"16:26","startHours":15.425055213964274,"endHours":16.425055213964274,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:26","end":"17:26","startHours":16.425055213964274,"endHours":17.425055213964274,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:26","end":"18:26","startHours":17.425055213964274,"endHours":18.425055213964274,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:26","end":"19:26","startHours":18.425055213964274,"endHours":19.425055213964274,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:26","end":"20:26","startHours":19.425055213964274,"endHours":20.425055213964274,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:26","end":"21:26","startHours":20.425055213964274,"endHours":21.425055213964274,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:26","end":"22:26","startHours":21.425055213964274,"endHours":22.425055213964274,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:26","end":"23:26","startHours":22.425055213964274,"endHours":23.425055213964274,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:26","end":"00:26","startHours":23.425055213964274,"endHours":24.425055213964274,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:26","end":"01:26","startHours":24.425055213964274,"endHours":25.425055213964274,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:26","end":"02:26","startHours":25.425055213964274,"endHours":26.425055213964274,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:26","end":"03:26","startHours":26.425055213964274,"endHours":27.425055213964274,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:26","end":"04:26","startHours":27.425055213964274,"endHours":28.425055213964274,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:26","end":"05:26","startHours":28.425055213964274,"endHours":29.425055213964274,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.059047077100107,"eotMinutes":3.7375796796685163,"ayanamsa":23.5367}},"calendars":{"vikram_samvat":2034,"vikram_samvatsara":"Pramoda","saka_samvat":1899,"saka_samvatsara":"Piṅgala","bengali_samvat":1384,"malayalam_era":1153,"nanakshahi_year":508,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Daśamī · Vikram 2034 Pramoda · Śaka 1899 Piṅgala"},"festivals":[],"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 12, 1977 CE · Ṛṣikeśa · Vidhyamitra","description":"May 12, 1977 CE for Ṛṣikeśa: Kṛṣṇa Daśamī, sūryodaya 05:26, sūryāsta 19:01.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1977-05-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1977-05-12","sa":"https://sa.vidhyamitra.com/city/rishikesh/1977-05-12","hi":"https://hi.vidhyamitra.com/city/rishikesh/1977-05-12","x-default":"https://vidhyamitra.com/city/rishikesh/1977-05-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:29:50.328Z","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":"2026-06-01T19:29:50.328Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:29:50.328Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}