{"id":"vidhyamitra:city-day:rishikesh:1981-06-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-06-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-06-21","date_display":"June 21, 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":6,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444776.770833,"kali_year":5083,"ahargana":1856311.2708,"sun":{"sidereal_longitude":65.7775,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":286.8911,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":221.1136,"elapsed_within_tithi_degrees":5.1136},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":286.8911,"elapsed_within_degrees":6.8911},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":352.6687},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":6,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444776.770833,"ahargana":1856311.2708,"kali_year":5083,"ayanamsa_lahiri":23.5941,"grahas":{"sun":{"sidereal_longitude":65.99890600000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":285.00290599999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":-0.2506},"mars":{"sidereal_longitude":47.83670599999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":67.73040600000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":157.93990599999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":85.961906,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":159.35350599999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":103.6957,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":283.6957,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":6,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444776.770833,"kali_year":5083,"ahargana":1856311.2708,"sun":{"sidereal_longitude":65.7775,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":286.8911,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":221.1136,"elapsed_within_tithi_degrees":5.1136},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3,"moon_longitude":286.8911,"elapsed_within_degrees":6.8911},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":352.6687},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.251,"elongation":138.886},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.251,"opposition_distance":41.114}},"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":"05:16","sunsetLocal":"19:21","solarNoonLocal":"12:18","dayLengthHours":14.084292644642646,"dayLengthDisplay":"14 Hours 05 Mins 03 Secs","nightLengthDisplay":"9 Hours 54 Mins 57 Secs","moonriseLocal":"21:35","moonsetLocal":"08:14","rahuKala":{"name":"Rāhu Kāla","start":"17:35","end":"19:21","startHours":17.58789375330239,"endHours":19.348430333882717,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:18","end":"14:04","startHours":12.306284011561395,"endHours":14.066820592141726,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:50","end":"17:35","startHours":15.827357172722056,"endHours":17.58789375330239,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"09:01","startHours":8.55047263965669,"endHours":9.019949061144777,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:51","end":"06:14","startHours":5.850983216100182,"endHours":6.2265643532906525,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:47","startHours":11.836807590073306,"endHours":12.775760433049484,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:23","end":"04:20","startHours":3.3862320032877182,"endHours":4.325184846263895,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:05","end":"05:16","startHours":4.09044663551985,"endHours":5.264137689240071,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:39","end":"15:36","startHours":14.653666119001835,"endHours":15.592618961978012,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:09","end":"19:33","startHours":19.148430333882718,"endHours":19.548430333882717,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:21","end":"19:56","startHours":19.348430333882717,"endHours":19.935275860742827,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:06","end":"20:51","startHours":19.098430333882717,"endHours":20.848430333882717,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:47","startHours":23.836807590073306,"endHours":24.775760433049484,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:16","end":"07:01","startHours":5.264137689240071,"endHours":7.024674269820402,"quality":"inauspicious"},{"name":"Chala","start":"07:01","end":"08:47","startHours":7.024674269820402,"endHours":8.785210850400732,"quality":"neutral"},{"name":"Labha","start":"08:47","end":"10:33","startHours":8.785210850400732,"endHours":10.545747430981063,"quality":"auspicious"},{"name":"Amṛta","start":"10:33","end":"12:18","startHours":10.545747430981063,"endHours":12.306284011561395,"quality":"auspicious"},{"name":"Kāla","start":"12:18","end":"14:04","startHours":12.306284011561395,"endHours":14.066820592141726,"quality":"inauspicious"},{"name":"Śubha","start":"14:04","end":"15:50","startHours":14.066820592141726,"endHours":15.827357172722056,"quality":"auspicious"},{"name":"Roga","start":"15:50","end":"17:35","startHours":15.827357172722056,"endHours":17.58789375330239,"quality":"inauspicious"},{"name":"Udveg","start":"17:35","end":"19:21","startHours":17.58789375330239,"endHours":19.348430333882717,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:21","end":"20:35","startHours":19.348430333882717,"endHours":20.587893753302385,"quality":"auspicious"},{"name":"Roga","start":"20:35","end":"21:50","startHours":20.587893753302385,"endHours":21.827357172722056,"quality":"inauspicious"},{"name":"Udveg","start":"21:50","end":"23:04","startHours":21.827357172722056,"endHours":23.066820592141724,"quality":"inauspicious"},{"name":"Chala","start":"23:04","end":"00:18","startHours":23.066820592141724,"endHours":24.306284011561395,"quality":"neutral"},{"name":"Labha","start":"00:18","end":"01:33","startHours":24.306284011561395,"endHours":25.545747430981063,"quality":"auspicious"},{"name":"Amṛta","start":"01:33","end":"02:47","startHours":25.545747430981063,"endHours":26.78521085040073,"quality":"auspicious"},{"name":"Kāla","start":"02:47","end":"04:01","startHours":26.78521085040073,"endHours":28.0246742698204,"quality":"inauspicious"},{"name":"Śubha","start":"04:01","end":"05:16","startHours":28.0246742698204,"endHours":29.264137689240073,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:16","end":"06:16","startHours":5.264137689240071,"endHours":6.264137689240071,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:16","end":"07:16","startHours":6.264137689240071,"endHours":7.264137689240071,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:16","end":"08:16","startHours":7.264137689240071,"endHours":8.264137689240071,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:16","end":"09:16","startHours":8.264137689240071,"endHours":9.264137689240071,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:16","end":"10:16","startHours":9.264137689240071,"endHours":10.264137689240071,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:16","end":"11:16","startHours":10.264137689240071,"endHours":11.264137689240071,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:16","end":"12:16","startHours":11.264137689240071,"endHours":12.264137689240071,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:16","end":"13:16","startHours":12.264137689240071,"endHours":13.264137689240071,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:16","end":"14:16","startHours":13.264137689240071,"endHours":14.264137689240071,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:16","end":"15:16","startHours":14.264137689240071,"endHours":15.264137689240071,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:16","end":"16:16","startHours":15.264137689240071,"endHours":16.264137689240073,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:16","end":"17:16","startHours":16.264137689240073,"endHours":17.264137689240073,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:16","end":"18:16","startHours":17.264137689240073,"endHours":18.264137689240073,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:16","end":"19:16","startHours":18.264137689240073,"endHours":19.264137689240073,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:16","end":"20:16","startHours":19.264137689240073,"endHours":20.264137689240073,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:16","end":"21:16","startHours":20.264137689240073,"endHours":21.264137689240073,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:16","end":"22:16","startHours":21.264137689240073,"endHours":22.264137689240073,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:16","end":"23:16","startHours":22.264137689240073,"endHours":23.264137689240073,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:16","end":"00:16","startHours":23.264137689240073,"endHours":24.264137689240073,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:16","end":"01:16","startHours":24.264137689240073,"endHours":25.264137689240073,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:16","end":"02:16","startHours":25.264137689240073,"endHours":26.264137689240073,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:16","end":"03:16","startHours":26.264137689240073,"endHours":27.264137689240073,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:16","end":"04:16","startHours":27.264137689240073,"endHours":28.264137689240073,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:16","end":"05:16","startHours":28.264137689240073,"endHours":29.264137689240073,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":23.43587337918979,"eotMinutes":-1.4474406936836473,"ayanamsa":23.5941}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Kṛṣṇa Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Kṛṣṇa Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"precedence":5},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 June 21, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"June 21, 1981 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 05:16, sūryāsta 19:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-06-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-06-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-06-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-06-21","x-default":"https://vidhyamitra.com/city/rishikesh/1981-06-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T20:09:53.584Z","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":"2026-05-18T20:09:53.584Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T20:09:53.584Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}