{"id":"vidhyamitra:city-day:rishikesh:1981-07-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-07-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-30","date_display":"July 30, 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":7,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444815.770833,"kali_year":5083,"ahargana":1856350.2708,"sun":{"sidereal_longitude":102.726,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":89.8758,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.1498,"elapsed_within_tithi_degrees":11.1498},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.8758,"elapsed_within_degrees":9.8758},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.6019},"karana":{"half_tithi_index":57,"name":"Śakuni"},"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":1981,"month":7,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444815.770833,"ahargana":1856350.2708,"kali_year":5083,"ayanamsa_lahiri":23.5956,"grahas":{"sun":{"sidereal_longitude":103.20701600000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"moon":{"sidereal_longitude":88.58551599999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false,"latitude":-0.9158},"mars":{"sidereal_longitude":74.484016,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":91.22281600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":162.49111600000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":133.259616,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":161.51311599999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.6293,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.6293,"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":7,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444815.770833,"kali_year":5083,"ahargana":1856350.2708,"sun":{"sidereal_longitude":102.726,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":89.8758,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.1498,"elapsed_within_tithi_degrees":11.1498},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.8758,"elapsed_within_degrees":9.8758},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.6019},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.916,"elongation":12.85},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.916,"opposition_distance":167.15}},"eclipse_window_40days":[{"offset_days":-13,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":1,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:34","sunsetLocal":"19:12","solarNoonLocal":"12:23","dayLengthHours":13.634837370537156,"dayLengthDisplay":"13 Hours 38 Mins 05 Secs","nightLengthDisplay":"10 Hours 21 Mins 55 Secs","moonriseLocal":"04:29","moonsetLocal":"18:21","rahuKala":{"name":"Rāhu Kāla","start":"14:05","end":"15:48","startHours":14.08842609993015,"endHours":15.792780771247294,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:34","end":"07:16","startHours":5.566652743344426,"endHours":7.271007414661571,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:59","end":"10:41","startHours":8.975362085978716,"endHours":10.67971675729586,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:45","end":"09:12","startHours":8.748114796469762,"endHours":9.202609375487668,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:08","end":"06:30","startHours":6.134770967116808,"endHours":6.498366630331132,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:50","startHours":11.9295768495951,"endHours":12.838566007630911,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:45","end":"04:39","startHours":3.748674427272806,"endHours":4.657663585308616,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:26","end":"05:34","startHours":4.430416295799663,"endHours":5.566652743344426,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:34","startHours":14.65654432370253,"endHours":15.56553348173834,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:00","end":"19:24","startHours":19.001490113881584,"endHours":19.401490113881582,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:12","end":"19:46","startHours":19.201490113881583,"endHours":19.769608337653963,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:57","end":"20:42","startHours":18.951490113881583,"endHours":20.701490113881583,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:50","startHours":23.9295768495951,"endHours":24.83856600763091,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:34","end":"07:16","startHours":5.566652743344426,"endHours":7.271007414661571,"quality":"auspicious"},{"name":"Roga","start":"07:16","end":"08:59","startHours":7.271007414661571,"endHours":8.975362085978716,"quality":"inauspicious"},{"name":"Udveg","start":"08:59","end":"10:41","startHours":8.975362085978716,"endHours":10.67971675729586,"quality":"inauspicious"},{"name":"Chala","start":"10:41","end":"12:23","startHours":10.67971675729586,"endHours":12.384071428613005,"quality":"neutral"},{"name":"Labha","start":"12:23","end":"14:05","startHours":12.384071428613005,"endHours":14.08842609993015,"quality":"auspicious"},{"name":"Amṛta","start":"14:05","end":"15:48","startHours":14.08842609993015,"endHours":15.792780771247294,"quality":"auspicious"},{"name":"Kāla","start":"15:48","end":"17:30","startHours":15.792780771247294,"endHours":17.49713544256444,"quality":"inauspicious"},{"name":"Śubha","start":"17:30","end":"19:12","startHours":17.49713544256444,"endHours":19.201490113881583,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"19:12","end":"20:30","startHours":19.201490113881583,"endHours":20.49713544256444,"quality":"auspicious"},{"name":"Kāla","start":"20:30","end":"21:48","startHours":20.49713544256444,"endHours":21.792780771247294,"quality":"inauspicious"},{"name":"Śubha","start":"21:48","end":"23:05","startHours":21.792780771247294,"endHours":23.08842609993015,"quality":"auspicious"},{"name":"Roga","start":"23:05","end":"00:23","startHours":23.08842609993015,"endHours":24.384071428613005,"quality":"inauspicious"},{"name":"Udveg","start":"00:23","end":"01:41","startHours":24.384071428613005,"endHours":25.67971675729586,"quality":"inauspicious"},{"name":"Chala","start":"01:41","end":"02:59","startHours":25.67971675729586,"endHours":26.975362085978716,"quality":"neutral"},{"name":"Labha","start":"02:59","end":"04:16","startHours":26.975362085978716,"endHours":28.27100741466157,"quality":"auspicious"},{"name":"Amṛta","start":"04:16","end":"05:34","startHours":28.27100741466157,"endHours":29.566652743344427,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:34","end":"06:34","startHours":5.566652743344426,"endHours":6.566652743344426,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:34","end":"07:34","startHours":6.566652743344426,"endHours":7.566652743344426,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:34","end":"08:34","startHours":7.566652743344426,"endHours":8.566652743344427,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:34","end":"09:34","startHours":8.566652743344427,"endHours":9.566652743344427,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:34","end":"10:34","startHours":9.566652743344427,"endHours":10.566652743344427,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:34","end":"11:34","startHours":10.566652743344427,"endHours":11.566652743344427,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:34","end":"12:34","startHours":11.566652743344427,"endHours":12.566652743344427,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:34","end":"13:34","startHours":12.566652743344427,"endHours":13.566652743344427,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:34","end":"14:34","startHours":13.566652743344427,"endHours":14.566652743344427,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:34","end":"15:34","startHours":14.566652743344427,"endHours":15.566652743344427,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:34","end":"16:34","startHours":15.566652743344427,"endHours":16.566652743344427,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:34","end":"17:34","startHours":16.566652743344427,"endHours":17.566652743344427,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:34","end":"18:34","startHours":17.566652743344427,"endHours":18.566652743344427,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:34","end":"19:34","startHours":18.566652743344427,"endHours":19.566652743344427,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:34","end":"20:34","startHours":19.566652743344427,"endHours":20.566652743344427,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:34","end":"21:34","startHours":20.566652743344427,"endHours":21.566652743344427,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:34","end":"22:34","startHours":21.566652743344427,"endHours":22.566652743344427,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:34","end":"23:34","startHours":22.566652743344427,"endHours":23.566652743344427,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:34","end":"00:34","startHours":23.566652743344427,"endHours":24.566652743344427,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:34","end":"01:34","startHours":24.566652743344427,"endHours":25.566652743344427,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:34","end":"02:34","startHours":25.566652743344427,"endHours":26.566652743344427,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:34","end":"03:34","startHours":26.566652743344427,"endHours":27.566652743344427,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:34","end":"04:34","startHours":27.566652743344427,"endHours":28.566652743344427,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:34","end":"05:34","startHours":28.566652743344427,"endHours":29.566652743344427,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":18.570179232302387,"eotMinutes":-6.1146857167802535,"ayanamsa":23.5956}},"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 Kṛṣṇa Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2},{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 July 30, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"July 30, 1981 CE for Ṛṣikeśa: Kṛṣṇa Caturdaśī, sūryodaya 05:34, sūryāsta 19:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-07-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-07-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-07-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-07-30","x-default":"https://vidhyamitra.com/city/rishikesh/1981-07-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T18:41:29.296Z","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":"2026-05-18T18:41:29.296Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T18:41:29.296Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}