{"id":"vidhyamitra:city-day:rishikesh:1998-12-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1998-12-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-12-07","date_display":"December 7, 1998 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":1998,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451154.770833,"kali_year":5100,"ahargana":1862689.2708,"sun":{"sidereal_longitude":230.4299,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":95.1644,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7344,"elapsed_within_tithi_degrees":8.7344},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":95.1644,"elapsed_within_degrees":1.831},"yoga":{"number":25,"name":"Brahma","sum_longitude":325.5943},"karana":{"half_tithi_index":37,"name":"Bālava"},"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":1998,"month":12,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451154.770833,"ahargana":1862689.2708,"kali_year":5100,"ayanamsa_lahiri":23.8381,"grahas":{"sun":{"sidereal_longitude":230.88192000000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":96.77251999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":-2.2885},"mars":{"sidereal_longitude":161.49532,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":219.07981999999993,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":325.24911999999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":240.25731999999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":3.3254200000000083,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":125.7585,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.7585,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"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":1998,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451154.770833,"kali_year":5100,"ahargana":1862689.2708,"sun":{"sidereal_longitude":230.4299,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":95.1644,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7344,"elapsed_within_tithi_degrees":8.7344},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":95.1644,"elapsed_within_degrees":1.831},"yoga":{"number":25,"name":"Brahma","sum_longitude":325.5943},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.289,"elongation":135.266},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.289,"opposition_distance":44.734}},"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":10.285741002418435,"dayLengthDisplay":"10 Hours 17 Mins 09 Secs","nightLengthDisplay":"13 Hours 42 Mins 51 Secs","moonriseLocal":"20:21","moonsetLocal":"10:04","rahuKala":{"name":"Rāhu Kāla","start":"08:18","end":"09:35","startHours":8.296278848704132,"endHours":9.581996474006436,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:52","end":"12:09","startHours":10.867714099308742,"endHours":12.153431724611046,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:26","end":"14:43","startHours":13.43914934991335,"endHours":14.724866975215654,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:25","end":"09:45","startHours":9.410567457299463,"endHours":9.753425490713411,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:26","end":"07:43","startHours":7.439133765169262,"endHours":7.71342019190042,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:30","startHours":11.810573691197098,"endHours":12.496289758024995,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:38","end":"06:19","startHours":5.639129089746037,"endHours":6.324845156573932,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:09","end":"07:01","startHours":6.153416139866958,"endHours":7.010561223401828,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:33","startHours":13.867721891680784,"endHours":14.55343795850868,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:06","end":"17:30","startHours":17.096302225820263,"endHours":17.496302225820262,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:18","end":"17:43","startHours":17.296302225820263,"endHours":17.724874767587696,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:03","end":"18:48","startHours":17.046302225820263,"endHours":18.796302225820263,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:30","startHours":23.8105736911971,"endHours":24.496289758024993,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:01","end":"08:18","startHours":7.010561223401828,"endHours":8.296278848704132,"quality":"auspicious"},{"name":"Kāla","start":"08:18","end":"09:35","startHours":8.296278848704132,"endHours":9.581996474006436,"quality":"inauspicious"},{"name":"Śubha","start":"09:35","end":"10:52","startHours":9.581996474006436,"endHours":10.867714099308742,"quality":"auspicious"},{"name":"Roga","start":"10:52","end":"12:09","startHours":10.867714099308742,"endHours":12.153431724611046,"quality":"inauspicious"},{"name":"Udveg","start":"12:09","end":"13:26","startHours":12.153431724611046,"endHours":13.43914934991335,"quality":"inauspicious"},{"name":"Chala","start":"13:26","end":"14:43","startHours":13.43914934991335,"endHours":14.724866975215654,"quality":"neutral"},{"name":"Labha","start":"14:43","end":"16:01","startHours":14.724866975215654,"endHours":16.01058460051796,"quality":"auspicious"},{"name":"Amṛta","start":"16:01","end":"17:18","startHours":16.01058460051796,"endHours":17.296302225820263,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:18","end":"19:01","startHours":17.296302225820263,"endHours":19.01058460051796,"quality":"neutral"},{"name":"Labha","start":"19:01","end":"20:43","startHours":19.01058460051796,"endHours":20.724866975215654,"quality":"auspicious"},{"name":"Amṛta","start":"20:43","end":"22:26","startHours":20.724866975215654,"endHours":22.43914934991335,"quality":"auspicious"},{"name":"Kāla","start":"22:26","end":"00:09","startHours":22.43914934991335,"endHours":24.153431724611046,"quality":"inauspicious"},{"name":"Śubha","start":"00:09","end":"01:52","startHours":24.153431724611046,"endHours":25.867714099308742,"quality":"auspicious"},{"name":"Roga","start":"01:52","end":"03:35","startHours":25.867714099308742,"endHours":27.581996474006438,"quality":"inauspicious"},{"name":"Udveg","start":"03:35","end":"05:18","startHours":27.581996474006438,"endHours":29.296278848704134,"quality":"inauspicious"},{"name":"Chala","start":"05:18","end":"07:01","startHours":29.296278848704134,"endHours":31.01056122340183,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.010561223401828,"endHours":8.010561223401828,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.010561223401828,"endHours":9.010561223401828,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.010561223401828,"endHours":10.010561223401828,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.010561223401828,"endHours":11.010561223401828,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.010561223401828,"endHours":12.010561223401828,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.010561223401828,"endHours":13.010561223401828,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.010561223401828,"endHours":14.010561223401828,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.010561223401828,"endHours":15.010561223401828,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.010561223401828,"endHours":16.01056122340183,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.01056122340183,"endHours":17.01056122340183,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.01056122340183,"endHours":18.01056122340183,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.01056122340183,"endHours":19.01056122340183,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.01056122340183,"endHours":20.01056122340183,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.01056122340183,"endHours":21.01056122340183,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.01056122340183,"endHours":22.01056122340183,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.01056122340183,"endHours":23.01056122340183,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.01056122340183,"endHours":24.01056122340183,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.01056122340183,"endHours":25.01056122340183,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.01056122340183,"endHours":26.01056122340183,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.01056122340183,"endHours":27.01056122340183,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.01056122340183,"endHours":28.01056122340183,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.01056122340183,"endHours":29.01056122340183,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.01056122340183,"endHours":30.01056122340183,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.01056122340183,"endHours":31.01056122340183,"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":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.56134865869142,"eotMinutes":7.723696523337262,"ayanamsa":23.8381}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Caturthī · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"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":"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 December 7, 1998 CE · Ṛṣikeśa · Vidhyamitra","description":"December 7, 1998 CE for Ṛṣikeśa: Kṛṣṇa Caturthī, sūryodaya 07:01, sūryāsta 17:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1998-12-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1998-12-07","sa":"https://sa.vidhyamitra.com/city/rishikesh/1998-12-07","hi":"https://hi.vidhyamitra.com/city/rishikesh/1998-12-07","x-default":"https://vidhyamitra.com/city/rishikesh/1998-12-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T02:10:29.780Z","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":"2026-05-17T02:10:29.780Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T02:10:29.780Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}