{"id":"vidhyamitra:city-day:rishikesh:1977-02-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1977-02-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1977-02-16","date_display":"February 16, 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":2,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443190.770833,"kali_year":5078,"ahargana":1854725.2708,"sun":{"sidereal_longitude":303.8804,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":278.7114,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":334.831,"elapsed_within_tithi_degrees":10.831},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":278.7114,"elapsed_within_degrees":12.0447},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":222.5918},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"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":1977,"month":2,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443190.770833,"ahargana":1854725.2708,"kali_year":5078,"ayanamsa_lahiri":23.5335,"grahas":{"sun":{"sidereal_longitude":303.72170299999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":277.14320299999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false,"latitude":4.4993},"mars":{"sidereal_longitude":281.88060300000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":284.065303,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":29.162003000000027,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":348.780803,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":108.836003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":187.7296,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":7.7296,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":1977,"month":2,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443190.770833,"kali_year":5078,"ahargana":1854725.2708,"sun":{"sidereal_longitude":303.8804,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":278.7114,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":334.831,"elapsed_within_tithi_degrees":10.831},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4,"moon_longitude":278.7114,"elapsed_within_degrees":12.0447},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":222.5918},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.499,"elongation":25.169},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.499,"opposition_distance":154.831}},"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":"06:57","sunsetLocal":"18:06","solarNoonLocal":"12:31","dayLengthHours":11.154682332544725,"dayLengthDisplay":"11 Hours 09 Mins 17 Secs","nightLengthDisplay":"12 Hours 50 Mins 43 Secs","moonriseLocal":"05:31","moonsetLocal":"15:59","rahuKala":{"name":"Rāhu Kāla","start":"12:31","end":"13:55","startHours":12.524460143365935,"endHours":13.918795434934026,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:20","end":"09:44","startHours":8.341454268661662,"endHours":9.735789560229753,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:08","end":"12:31","startHours":11.130124851797845,"endHours":12.524460143365935,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:33","end":"09:55","startHours":9.549878188020674,"endHours":9.921700932438831,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:25","end":"07:43","startHours":7.4118974076162685,"endHours":7.709355603150795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.152637398947778,"endHours":12.896282887784093,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:28","end":"06:12","startHours":5.459827999420942,"endHours":6.203473488257257,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:01","end":"06:57","startHours":6.017562116048178,"endHours":6.947118977093572,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:08","startHours":14.383573865456722,"endHours":15.127219354293036,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.901801309638298,"endHours":18.301801309638297,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:34","startHours":18.101801309638297,"endHours":18.566579740160993,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.851801309638297,"endHours":19.601801309638297,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.15263739894778,"endHours":24.896282887784093,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:57","end":"08:20","startHours":6.947118977093572,"endHours":8.341454268661662,"quality":"auspicious"},{"name":"Amṛta","start":"08:20","end":"09:44","startHours":8.341454268661662,"endHours":9.735789560229753,"quality":"auspicious"},{"name":"Kāla","start":"09:44","end":"11:08","startHours":9.735789560229753,"endHours":11.130124851797845,"quality":"inauspicious"},{"name":"Śubha","start":"11:08","end":"12:31","startHours":11.130124851797845,"endHours":12.524460143365935,"quality":"auspicious"},{"name":"Roga","start":"12:31","end":"13:55","startHours":12.524460143365935,"endHours":13.918795434934026,"quality":"inauspicious"},{"name":"Udveg","start":"13:55","end":"15:19","startHours":13.918795434934026,"endHours":15.313130726502116,"quality":"inauspicious"},{"name":"Chala","start":"15:19","end":"16:42","startHours":15.313130726502116,"endHours":16.707466018070207,"quality":"neutral"},{"name":"Labha","start":"16:42","end":"18:06","startHours":16.707466018070207,"endHours":18.101801309638297,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:06","end":"19:42","startHours":18.101801309638297,"endHours":19.707466018070207,"quality":"inauspicious"},{"name":"Chala","start":"19:42","end":"21:19","startHours":19.707466018070207,"endHours":21.313130726502116,"quality":"neutral"},{"name":"Labha","start":"21:19","end":"22:55","startHours":21.313130726502116,"endHours":22.918795434934026,"quality":"auspicious"},{"name":"Amṛta","start":"22:55","end":"00:31","startHours":22.918795434934026,"endHours":24.524460143365935,"quality":"auspicious"},{"name":"Kāla","start":"00:31","end":"02:08","startHours":24.524460143365935,"endHours":26.130124851797845,"quality":"inauspicious"},{"name":"Śubha","start":"02:08","end":"03:44","startHours":26.130124851797845,"endHours":27.735789560229755,"quality":"auspicious"},{"name":"Roga","start":"03:44","end":"05:20","startHours":27.735789560229755,"endHours":29.341454268661664,"quality":"inauspicious"},{"name":"Udveg","start":"05:20","end":"06:57","startHours":29.341454268661664,"endHours":30.947118977093574,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:57","end":"07:57","startHours":6.947118977093572,"endHours":7.947118977093572,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:57","end":"08:57","startHours":7.947118977093572,"endHours":8.947118977093572,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:57","end":"09:57","startHours":8.947118977093572,"endHours":9.947118977093572,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:57","end":"10:57","startHours":9.947118977093572,"endHours":10.947118977093572,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:57","end":"11:57","startHours":10.947118977093572,"endHours":11.947118977093572,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:57","end":"12:57","startHours":11.947118977093572,"endHours":12.947118977093572,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:57","end":"13:57","startHours":12.947118977093572,"endHours":13.947118977093572,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:57","end":"14:57","startHours":13.947118977093572,"endHours":14.947118977093572,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:57","end":"15:57","startHours":14.947118977093572,"endHours":15.947118977093572,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:57","end":"16:57","startHours":15.947118977093572,"endHours":16.947118977093574,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:57","end":"17:57","startHours":16.947118977093574,"endHours":17.947118977093574,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:57","end":"18:57","startHours":17.947118977093574,"endHours":18.947118977093574,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:57","end":"19:57","startHours":18.947118977093574,"endHours":19.947118977093574,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:57","end":"20:57","startHours":19.947118977093574,"endHours":20.947118977093574,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:57","end":"21:57","startHours":20.947118977093574,"endHours":21.947118977093574,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:57","end":"22:57","startHours":21.947118977093574,"endHours":22.947118977093574,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:57","end":"23:57","startHours":22.947118977093574,"endHours":23.947118977093574,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:57","end":"00:57","startHours":23.947118977093574,"endHours":24.947118977093574,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:57","end":"01:57","startHours":24.947118977093574,"endHours":25.947118977093574,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:57","end":"02:57","startHours":25.947118977093574,"endHours":26.947118977093574,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:57","end":"03:57","startHours":26.947118977093574,"endHours":27.947118977093574,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:57","end":"04:57","startHours":27.947118977093574,"endHours":28.947118977093574,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:57","end":"05:57","startHours":28.947118977093574,"endHours":29.947118977093574,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:57","end":"06:57","startHours":29.947118977093574,"endHours":30.947118977093574,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.423314425013256,"eotMinutes":-14.538008601956186,"ayanamsa":23.5335}},"calendars":{"vikram_samvat":2034,"vikram_samvatsara":"Pramoda","saka_samvat":1899,"saka_samvatsara":"Piṅgala","bengali_samvat":1384,"malayalam_era":1153,"nanakshahi_year":508,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Trayodaśī · Vikram 2034 Pramoda · Śaka 1899 Piṅgala"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 16, 1977 CE · Ṛṣikeśa · Vidhyamitra","description":"February 16, 1977 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 06:57, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1977-02-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1977-02-16","sa":"https://sa.vidhyamitra.com/city/rishikesh/1977-02-16","hi":"https://hi.vidhyamitra.com/city/rishikesh/1977-02-16","x-default":"https://vidhyamitra.com/city/rishikesh/1977-02-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T04:19:56.403Z","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":"2026-06-02T04:19:56.403Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T04:19:56.403Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}