{"id":"vidhyamitra:city-day:rishikesh:1988-12-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1988-12-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1988-12-07","date_display":"December 7, 1988 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":1988,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447502.770833,"kali_year":5090,"ahargana":1859037.2708,"sun":{"sidereal_longitude":231.0313,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":203.8741,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":332.8428,"elapsed_within_tithi_degrees":8.8428},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.8741,"elapsed_within_degrees":3.8741},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":74.9054},"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":1988,"month":12,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447502.770833,"ahargana":1859037.2708,"kali_year":5090,"ayanamsa_lahiri":23.6984,"grahas":{"sun":{"sidereal_longitude":231.45525299999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":205.21955300000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":-4.0647},"mars":{"sidereal_longitude":345.213053,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":234.72075299999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":35.986852999999996,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":203.153453,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":248.683453,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":319.2591,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":139.2591,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":1988,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447502.770833,"kali_year":5090,"ahargana":1859037.2708,"sun":{"sidereal_longitude":231.0313,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":203.8741,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":332.8428,"elapsed_within_tithi_degrees":8.8428},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":203.8741,"elapsed_within_degrees":3.8741},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":74.9054},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.065,"elongation":27.157},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.065,"opposition_distance":152.843}},"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":"07:01","sunsetLocal":"17:18","solarNoonLocal":"12:09","dayLengthHours":10.281278859716764,"dayLengthDisplay":"10 Hours 16 Mins 53 Secs","nightLengthDisplay":"13 Hours 43 Mins 07 Secs","moonriseLocal":"05:03","moonsetLocal":"15:45","rahuKala":{"name":"Rāhu Kāla","start":"12:09","end":"13:26","startHours":12.153431724611046,"endHours":13.438591582075642,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:18","end":"09:35","startHours":8.29795215221726,"endHours":9.583112009681855,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:52","end":"12:09","startHours":10.86827186714645,"endHours":12.153431724611046,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:45","startHours":9.411757362019909,"endHours":9.754466657343801,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:26","end":"07:43","startHours":7.441178913907529,"endHours":7.715346350166643,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:30","startHours":11.810722429287154,"endHours":12.496141019934939,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:39","end":"06:20","startHours":5.6419551134570955,"endHours":6.32737370410488,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:01","startHours":6.156019056442934,"endHours":7.012792294752664,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:33","startHours":13.866978201230506,"endHours":14.552396791878289,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.09407115446943,"endHours":17.494071154469427,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:43","startHours":17.294071154469428,"endHours":17.722457773624292,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.044071154469428,"endHours":18.794071154469428,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:30","startHours":23.810722429287154,"endHours":24.49614101993494,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:01","end":"08:18","startHours":7.012792294752664,"endHours":8.29795215221726,"quality":"auspicious"},{"name":"Amṛta","start":"08:18","end":"09:35","startHours":8.29795215221726,"endHours":9.583112009681855,"quality":"auspicious"},{"name":"Kāla","start":"09:35","end":"10:52","startHours":9.583112009681855,"endHours":10.86827186714645,"quality":"inauspicious"},{"name":"Śubha","start":"10:52","end":"12:09","startHours":10.86827186714645,"endHours":12.153431724611046,"quality":"auspicious"},{"name":"Roga","start":"12:09","end":"13:26","startHours":12.153431724611046,"endHours":13.438591582075642,"quality":"inauspicious"},{"name":"Udveg","start":"13:26","end":"14:43","startHours":13.438591582075642,"endHours":14.723751439540237,"quality":"inauspicious"},{"name":"Chala","start":"14:43","end":"16:01","startHours":14.723751439540237,"endHours":16.008911297004833,"quality":"neutral"},{"name":"Labha","start":"16:01","end":"17:18","startHours":16.008911297004833,"endHours":17.294071154469428,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:18","end":"19:01","startHours":17.294071154469428,"endHours":19.008911297004833,"quality":"inauspicious"},{"name":"Chala","start":"19:01","end":"20:43","startHours":19.008911297004833,"endHours":20.723751439540237,"quality":"neutral"},{"name":"Labha","start":"20:43","end":"22:26","startHours":20.723751439540237,"endHours":22.43859158207564,"quality":"auspicious"},{"name":"Amṛta","start":"22:26","end":"00:09","startHours":22.43859158207564,"endHours":24.153431724611046,"quality":"auspicious"},{"name":"Kāla","start":"00:09","end":"01:52","startHours":24.153431724611046,"endHours":25.86827186714645,"quality":"inauspicious"},{"name":"Śubha","start":"01:52","end":"03:35","startHours":25.86827186714645,"endHours":27.583112009681855,"quality":"auspicious"},{"name":"Roga","start":"03:35","end":"05:18","startHours":27.583112009681855,"endHours":29.29795215221726,"quality":"inauspicious"},{"name":"Udveg","start":"05:18","end":"07:01","startHours":29.29795215221726,"endHours":31.012792294752664,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.012792294752664,"endHours":8.012792294752664,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.012792294752664,"endHours":9.012792294752664,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.012792294752664,"endHours":10.012792294752664,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.012792294752664,"endHours":11.012792294752664,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.012792294752664,"endHours":12.012792294752664,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.012792294752664,"endHours":13.012792294752664,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.012792294752664,"endHours":14.012792294752664,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.012792294752664,"endHours":15.012792294752664,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.012792294752664,"endHours":16.012792294752664,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.012792294752664,"endHours":17.012792294752664,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.012792294752664,"endHours":18.012792294752664,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.012792294752664,"endHours":19.012792294752664,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.012792294752664,"endHours":20.012792294752664,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.012792294752664,"endHours":21.012792294752664,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.012792294752664,"endHours":22.012792294752664,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.012792294752664,"endHours":23.012792294752664,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.012792294752664,"endHours":24.012792294752664,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.012792294752664,"endHours":25.012792294752664,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.012792294752664,"endHours":26.012792294752664,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.012792294752664,"endHours":27.012792294752664,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.012792294752664,"endHours":28.012792294752664,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.012792294752664,"endHours":29.012792294752664,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.012792294752664,"endHours":30.012792294752664,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.012792294752664,"endHours":31.012792294752664,"planetary_lord":"Sun"}],"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"South-West","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.60989376817078,"eotMinutes":7.723696523337262,"ayanamsa":23.6984}},"calendars":{"vikram_samvat":2045,"vikram_samvatsara":"Vṛṣa","saka_samvat":1910,"saka_samvatsara":"Vibhava","bengali_samvat":1395,"malayalam_era":1164,"nanakshahi_year":519,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Trayodaśī · Vikram 2045 Vṛṣa · Śaka 1910 Vibhava"},"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":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 December 7, 1988 CE · Ṛṣikeśa · Vidhyamitra","description":"December 7, 1988 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 07:01, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1988-12-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1988-12-07","sa":"https://sa.vidhyamitra.com/city/rishikesh/1988-12-07","hi":"https://hi.vidhyamitra.com/city/rishikesh/1988-12-07","x-default":"https://vidhyamitra.com/city/rishikesh/1988-12-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:35:07.384Z","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":"2026-06-01T15:35:07.384Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:35:07.384Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}