{"id":"vidhyamitra:city-day:rishikesh:1987-01-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1987-01-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-01-06","date_display":"January 6, 1987 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":1987,"month":1,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446801.770833,"kali_year":5088,"ahargana":1858336.2708,"sun":{"sidereal_longitude":261.341,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":337.5247,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":76.1836,"elapsed_within_tithi_degrees":4.1836},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.5247,"elapsed_within_degrees":4.1914},"yoga":{"number":18,"name":"Varīyān","sum_longitude":238.8657},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1987,"month":1,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446801.770833,"ahargana":1858336.2708,"kali_year":5088,"ayanamsa_lahiri":23.6716,"grahas":{"sun":{"sidereal_longitude":261.50173700000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":340.74953700000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false,"latitude":-1.4546},"mars":{"sidereal_longitude":334.74493699999994,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":257.709337,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":325.42913699999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":215.136937,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":231.902337,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":356.4014,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":176.4014,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":1987,"month":1,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446801.770833,"kali_year":5088,"ahargana":1858336.2708,"sun":{"sidereal_longitude":261.341,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":337.5247,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":76.1836,"elapsed_within_tithi_degrees":4.1836},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":337.5247,"elapsed_within_degrees":4.1914},"yoga":{"number":18,"name":"Varīyān","sum_longitude":238.8657},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.455,"elongation":76.184},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.455,"opposition_distance":103.816}},"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":"07:14","sunsetLocal":"17:31","solarNoonLocal":"12:23","dayLengthHours":10.28463248473376,"dayLengthDisplay":"10 Hours 17 Mins 05 Secs","nightLengthDisplay":"13 Hours 42 Mins 55 Secs","moonriseLocal":"11:33","moonsetLocal":"23:47","rahuKala":{"name":"Rāhu Kāla","start":"14:57","end":"16:14","startHours":14.951245139633002,"endHours":16.236824200224724,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:49","end":"11:06","startHours":9.808928897266124,"endHours":11.094507957857843,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:23","end":"13:40","startHours":12.380087018449563,"endHours":13.665666079041284,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:59","startHours":9.637518355853894,"endHours":9.980339438678353,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:40","end":"07:56","startHours":7.666297129613257,"endHours":7.940553995872824,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:43","startHours":12.037265935625104,"endHours":12.722908101274022,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:52","end":"06:33","startHours":5.866486444784849,"endHours":6.552128610433766,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:23","end":"07:14","startHours":6.380718069021537,"endHours":7.237770776082684,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:47","startHours":14.094192432571855,"endHours":14.779834598220772,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:19","end":"17:43","startHours":17.322403260816444,"endHours":17.722403260816442,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:31","end":"17:57","startHours":17.522403260816443,"endHours":17.950929614347015,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:16","end":"19:01","startHours":17.272403260816443,"endHours":19.022403260816443,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:43","startHours":24.037265935625108,"endHours":24.722908101274022,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:14","end":"08:31","startHours":7.237770776082684,"endHours":8.523349836674404,"quality":"inauspicious"},{"name":"Udveg","start":"08:31","end":"09:49","startHours":8.523349836674404,"endHours":9.808928897266124,"quality":"inauspicious"},{"name":"Chala","start":"09:49","end":"11:06","startHours":9.808928897266124,"endHours":11.094507957857843,"quality":"neutral"},{"name":"Labha","start":"11:06","end":"12:23","startHours":11.094507957857843,"endHours":12.380087018449563,"quality":"auspicious"},{"name":"Amṛta","start":"12:23","end":"13:40","startHours":12.380087018449563,"endHours":13.665666079041284,"quality":"auspicious"},{"name":"Kāla","start":"13:40","end":"14:57","startHours":13.665666079041284,"endHours":14.951245139633002,"quality":"inauspicious"},{"name":"Śubha","start":"14:57","end":"16:14","startHours":14.951245139633002,"endHours":16.236824200224724,"quality":"auspicious"},{"name":"Roga","start":"16:14","end":"17:31","startHours":16.236824200224724,"endHours":17.522403260816443,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:31","end":"19:14","startHours":17.522403260816443,"endHours":19.236824200224724,"quality":"inauspicious"},{"name":"Śubha","start":"19:14","end":"20:57","startHours":19.236824200224724,"endHours":20.951245139633002,"quality":"auspicious"},{"name":"Roga","start":"20:57","end":"22:40","startHours":20.951245139633002,"endHours":22.665666079041284,"quality":"inauspicious"},{"name":"Udveg","start":"22:40","end":"00:23","startHours":22.665666079041284,"endHours":24.380087018449565,"quality":"inauspicious"},{"name":"Chala","start":"00:23","end":"02:06","startHours":24.380087018449565,"endHours":26.094507957857843,"quality":"neutral"},{"name":"Labha","start":"02:06","end":"03:49","startHours":26.094507957857843,"endHours":27.808928897266124,"quality":"auspicious"},{"name":"Amṛta","start":"03:49","end":"05:31","startHours":27.808928897266124,"endHours":29.523349836674406,"quality":"auspicious"},{"name":"Kāla","start":"05:31","end":"07:14","startHours":29.523349836674406,"endHours":31.237770776082684,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:14","end":"08:14","startHours":7.237770776082684,"endHours":8.237770776082684,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:14","end":"09:14","startHours":8.237770776082684,"endHours":9.237770776082684,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:14","end":"10:14","startHours":9.237770776082684,"endHours":10.237770776082684,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:14","end":"11:14","startHours":10.237770776082684,"endHours":11.237770776082684,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:14","end":"12:14","startHours":11.237770776082684,"endHours":12.237770776082684,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:14","end":"13:14","startHours":12.237770776082684,"endHours":13.237770776082684,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:14","end":"14:14","startHours":13.237770776082684,"endHours":14.237770776082684,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:14","end":"15:14","startHours":14.237770776082684,"endHours":15.237770776082684,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:14","end":"16:14","startHours":15.237770776082684,"endHours":16.237770776082684,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:14","end":"17:14","startHours":16.237770776082684,"endHours":17.237770776082684,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:14","end":"18:14","startHours":17.237770776082684,"endHours":18.237770776082684,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:14","end":"19:14","startHours":18.237770776082684,"endHours":19.237770776082684,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:14","end":"20:14","startHours":19.237770776082684,"endHours":20.237770776082684,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:14","end":"21:14","startHours":20.237770776082684,"endHours":21.237770776082684,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:14","end":"22:14","startHours":21.237770776082684,"endHours":22.237770776082684,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:14","end":"23:14","startHours":22.237770776082684,"endHours":23.237770776082684,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:14","end":"00:14","startHours":23.237770776082684,"endHours":24.237770776082684,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:14","end":"01:14","startHours":24.237770776082684,"endHours":25.237770776082684,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:14","end":"02:14","startHours":25.237770776082684,"endHours":26.237770776082684,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:14","end":"03:14","startHours":26.237770776082684,"endHours":27.237770776082684,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:14","end":"04:14","startHours":27.237770776082684,"endHours":28.237770776082684,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:14","end":"05:14","startHours":28.237770776082684,"endHours":29.237770776082684,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:14","end":"06:14","startHours":29.237770776082684,"endHours":30.237770776082684,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:14","end":"07:14","startHours":30.237770776082684,"endHours":31.237770776082684,"planetary_lord":"Saturn"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.573412280189107,"eotMinutes":-5.875621106973772,"ayanamsa":23.6716}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Saptamī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 January 6, 1987 CE · Ṛṣikeśa · Vidhyamitra","description":"January 6, 1987 CE for Ṛṣikeśa: Śukla Saptamī, sūryodaya 07:14, sūryāsta 17:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1987-01-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1987-01-06","sa":"https://sa.vidhyamitra.com/city/rishikesh/1987-01-06","hi":"https://hi.vidhyamitra.com/city/rishikesh/1987-01-06","x-default":"https://vidhyamitra.com/city/rishikesh/1987-01-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T02:23:19.763Z","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":"2026-05-18T02:23:19.763Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T02:23:19.763Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}