{"id":"vidhyamitra:city-day:rishikesh:1981-03-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-03-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-03-16","date_display":"March 16, 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":3,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444679.770833,"kali_year":5082,"ahargana":1856214.2708,"sun":{"sidereal_longitude":332.0021,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":97.4588,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.4567,"elapsed_within_tithi_degrees":5.4567},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":97.4588,"elapsed_within_degrees":4.1255},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.4609},"karana":{"half_tithi_index":20,"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":1981,"month":3,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444679.770833,"ahargana":1856214.2708,"kali_year":5082,"ayanamsa_lahiri":23.5904,"grahas":{"sun":{"sidereal_longitude":331.78091300000006,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":98.527513,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":-0.8868},"mars":{"sidereal_longitude":335.846913,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":304.469113,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":163.280713,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":326.415213,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":163.49541299999999,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":108.8352,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":288.8352,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":3,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444679.770833,"kali_year":5082,"ahargana":1856214.2708,"sun":{"sidereal_longitude":332.0021,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":97.4588,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.4567,"elapsed_within_tithi_degrees":5.4567},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":97.4588,"elapsed_within_degrees":4.1255},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.4609},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.887,"elongation":125.457},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.887,"opposition_distance":54.543}},"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":"06:27","sunsetLocal":"18:26","solarNoonLocal":"12:26","dayLengthHours":11.986288874853052,"dayLengthDisplay":"11 Hours 59 Mins 11 Secs","nightLengthDisplay":"12 Hours 00 Mins 49 Secs","moonriseLocal":"14:02","moonsetLocal":"03:44","rahuKala":{"name":"Rāhu Kāla","start":"07:57","end":"09:26","startHours":7.943295007621202,"endHours":9.441581116977833,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:56","end":"12:26","startHours":10.939867226334465,"endHours":12.438153335691098,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:56","end":"15:26","startHours":13.936439445047728,"endHours":15.43472555440436,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:15","end":"09:38","startHours":9.241809635730283,"endHours":9.641352598225385,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:57","end":"07:16","startHours":6.944437601383448,"endHours":7.264071971379529,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:50","startHours":12.038610373195995,"endHours":12.8376962981862,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:51","end":"05:39","startHours":4.846837048284164,"endHours":5.645922973274367,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:27","end":"06:27","startHours":5.446151492026816,"endHours":6.445008898264571,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:14","startHours":14.435868148166605,"endHours":15.234954073156809,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.231297773117625,"endHours":18.631297773117623,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:56","startHours":18.431297773117624,"endHours":18.9307264762365,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.181297773117624,"endHours":19.931297773117624,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:50","startHours":24.038610373195997,"endHours":24.8376962981862,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:27","end":"07:57","startHours":6.445008898264571,"endHours":7.943295007621202,"quality":"auspicious"},{"name":"Kāla","start":"07:57","end":"09:26","startHours":7.943295007621202,"endHours":9.441581116977833,"quality":"inauspicious"},{"name":"Śubha","start":"09:26","end":"10:56","startHours":9.441581116977833,"endHours":10.939867226334465,"quality":"auspicious"},{"name":"Roga","start":"10:56","end":"12:26","startHours":10.939867226334465,"endHours":12.438153335691098,"quality":"inauspicious"},{"name":"Udveg","start":"12:26","end":"13:56","startHours":12.438153335691098,"endHours":13.936439445047728,"quality":"inauspicious"},{"name":"Chala","start":"13:56","end":"15:26","startHours":13.936439445047728,"endHours":15.43472555440436,"quality":"neutral"},{"name":"Labha","start":"15:26","end":"16:56","startHours":15.43472555440436,"endHours":16.933011663760993,"quality":"auspicious"},{"name":"Amṛta","start":"16:56","end":"18:26","startHours":16.933011663760993,"endHours":18.431297773117624,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:26","end":"19:56","startHours":18.431297773117624,"endHours":19.933011663760993,"quality":"neutral"},{"name":"Labha","start":"19:56","end":"21:26","startHours":19.933011663760993,"endHours":21.43472555440436,"quality":"auspicious"},{"name":"Amṛta","start":"21:26","end":"22:56","startHours":21.43472555440436,"endHours":22.93643944504773,"quality":"auspicious"},{"name":"Kāla","start":"22:56","end":"00:26","startHours":22.93643944504773,"endHours":24.438153335691098,"quality":"inauspicious"},{"name":"Śubha","start":"00:26","end":"01:56","startHours":24.438153335691098,"endHours":25.939867226334467,"quality":"auspicious"},{"name":"Roga","start":"01:56","end":"03:26","startHours":25.939867226334467,"endHours":27.441581116977837,"quality":"inauspicious"},{"name":"Udveg","start":"03:26","end":"04:57","startHours":27.441581116977837,"endHours":28.943295007621202,"quality":"inauspicious"},{"name":"Chala","start":"04:57","end":"06:27","startHours":28.943295007621202,"endHours":30.44500889826457,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:27","end":"07:27","startHours":6.445008898264571,"endHours":7.445008898264571,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:27","end":"08:27","startHours":7.445008898264571,"endHours":8.445008898264572,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:27","end":"09:27","startHours":8.445008898264572,"endHours":9.445008898264572,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:27","end":"10:27","startHours":9.445008898264572,"endHours":10.445008898264572,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:27","end":"11:27","startHours":10.445008898264572,"endHours":11.445008898264572,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:27","end":"12:27","startHours":11.445008898264572,"endHours":12.445008898264572,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:27","end":"13:27","startHours":12.445008898264572,"endHours":13.445008898264572,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:27","end":"14:27","startHours":13.445008898264572,"endHours":14.445008898264572,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:27","end":"15:27","startHours":14.445008898264572,"endHours":15.445008898264572,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:27","end":"16:27","startHours":15.445008898264572,"endHours":16.44500889826457,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:27","end":"17:27","startHours":16.44500889826457,"endHours":17.44500889826457,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:27","end":"18:27","startHours":17.44500889826457,"endHours":18.44500889826457,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:27","end":"19:27","startHours":18.44500889826457,"endHours":19.44500889826457,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:27","end":"20:27","startHours":19.44500889826457,"endHours":20.44500889826457,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:27","end":"21:27","startHours":20.44500889826457,"endHours":21.44500889826457,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:27","end":"22:27","startHours":21.44500889826457,"endHours":22.44500889826457,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:27","end":"23:27","startHours":22.44500889826457,"endHours":23.44500889826457,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:27","end":"00:27","startHours":23.44500889826457,"endHours":24.44500889826457,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:27","end":"01:27","startHours":24.44500889826457,"endHours":25.44500889826457,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:27","end":"02:27","startHours":25.44500889826457,"endHours":26.44500889826457,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:27","end":"03:27","startHours":26.44500889826457,"endHours":27.44500889826457,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:27","end":"04:27","startHours":27.44500889826457,"endHours":28.44500889826457,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:27","end":"05:27","startHours":28.44500889826457,"endHours":29.44500889826457,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:27","end":"06:27","startHours":29.44500889826457,"endHours":30.44500889826457,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-1.8392931354523092,"eotMinutes":-9.359600141465874,"ayanamsa":23.5904}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"kamada-ekadashi","name":"Kāmadā Ekādaśī","name_sanskrit":"कामदा एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Fulfills righteous desires; removes brahma-hatyā.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5},{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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":[]},"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 March 16, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"March 16, 1981 CE for Ṛṣikeśa: Śukla Ekādaśī, sūryodaya 06:27, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-03-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-03-16","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-03-16","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-03-16","x-default":"https://vidhyamitra.com/city/rishikesh/1981-03-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T07:56:12.317Z","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":"2026-05-19T07:56:12.317Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T07:56:12.317Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}