{"id":"vidhyamitra:city-day:rishikesh:1971-01-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1971-01-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-01-27","date_display":"January 27, 1971 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":1971,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440978.770833,"kali_year":5072,"ahargana":1852513.2708,"sun":{"sidereal_longitude":283.0377,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":282.713,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.6753,"elapsed_within_tithi_degrees":11.6753},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":282.713,"elapsed_within_degrees":2.713},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.7507},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1971,"month":1,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2440978.770833,"ahargana":1852513.2708,"kali_year":5072,"ayanamsa_lahiri":23.4489,"grahas":{"sun":{"sidereal_longitude":282.9886180000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":284.143018,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false,"latitude":-1.7002},"mars":{"sidereal_longitude":219.43161800000007,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":260.41131799999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":219.35501799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":236.574518,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":22.75111800000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":304.932,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":124.932,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":1971,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440978.770833,"kali_year":5072,"ahargana":1852513.2708,"sun":{"sidereal_longitude":283.0377,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":282.713,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.6753,"elapsed_within_tithi_degrees":11.6753},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":282.713,"elapsed_within_degrees":2.713},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.7507},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.7,"elongation":0.325},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.7,"opposition_distance":179.675}},"eclipse_window_40days":[{"offset_days":14,"type":"lunar","occurs":true,"moon_latitude":0.69,"opposition_distance":1.965}]},"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":"07:11","sunsetLocal":"17:49","solarNoonLocal":"12:30","dayLengthHours":10.633359036538899,"dayLengthDisplay":"10 Hours 38 Mins 00 Secs","nightLengthDisplay":"13 Hours 22 Mins 00 Secs","moonriseLocal":"07:16","moonsetLocal":"17:53","rahuKala":{"name":"Rāhu Kāla","start":"12:30","end":"13:49","startHours":12.494906758447986,"endHours":13.824076638015347,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:30","end":"09:50","startHours":8.507397119745898,"endHours":9.83656699931326,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:10","end":"12:30","startHours":11.165736878880622,"endHours":12.494906758447986,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.659344348704279,"endHours":10.013789649922241,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:37","end":"07:54","startHours":7.621283866700989,"endHours":7.90484010767536,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:51","startHours":12.140461457230023,"endHours":12.849352059665948,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:28","startHours":5.760446035306682,"endHours":6.469336637742609,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:18","end":"07:11","startHours":6.292113987133627,"endHours":7.178227240178535,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:16","end":"14:59","startHours":14.2671332645378,"endHours":14.976023866973728,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:37","end":"18:01","startHours":17.611586276717436,"endHours":18.011586276717434,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:49","end":"18:15","startHours":17.811586276717435,"endHours":18.25464290323989,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:34","end":"19:19","startHours":17.561586276717435,"endHours":19.311586276717435,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:51","startHours":24.14046145723002,"endHours":24.84935205966595,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:11","end":"08:30","startHours":7.178227240178535,"endHours":8.507397119745898,"quality":"auspicious"},{"name":"Amṛta","start":"08:30","end":"09:50","startHours":8.507397119745898,"endHours":9.83656699931326,"quality":"auspicious"},{"name":"Kāla","start":"09:50","end":"11:10","startHours":9.83656699931326,"endHours":11.165736878880622,"quality":"inauspicious"},{"name":"Śubha","start":"11:10","end":"12:30","startHours":11.165736878880622,"endHours":12.494906758447986,"quality":"auspicious"},{"name":"Roga","start":"12:30","end":"13:49","startHours":12.494906758447986,"endHours":13.824076638015347,"quality":"inauspicious"},{"name":"Udveg","start":"13:49","end":"15:09","startHours":13.824076638015347,"endHours":15.153246517582708,"quality":"inauspicious"},{"name":"Chala","start":"15:09","end":"16:29","startHours":15.153246517582708,"endHours":16.48241639715007,"quality":"neutral"},{"name":"Labha","start":"16:29","end":"17:49","startHours":16.48241639715007,"endHours":17.811586276717435,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:49","end":"19:29","startHours":17.811586276717435,"endHours":19.48241639715007,"quality":"inauspicious"},{"name":"Chala","start":"19:29","end":"21:09","startHours":19.48241639715007,"endHours":21.15324651758271,"quality":"neutral"},{"name":"Labha","start":"21:09","end":"22:49","startHours":21.15324651758271,"endHours":22.82407663801535,"quality":"auspicious"},{"name":"Amṛta","start":"22:49","end":"00:30","startHours":22.82407663801535,"endHours":24.494906758447986,"quality":"auspicious"},{"name":"Kāla","start":"00:30","end":"02:10","startHours":24.494906758447986,"endHours":26.165736878880622,"quality":"inauspicious"},{"name":"Śubha","start":"02:10","end":"03:50","startHours":26.165736878880622,"endHours":27.836566999313263,"quality":"auspicious"},{"name":"Roga","start":"03:50","end":"05:30","startHours":27.836566999313263,"endHours":29.5073971197459,"quality":"inauspicious"},{"name":"Udveg","start":"05:30","end":"07:11","startHours":29.5073971197459,"endHours":31.178227240178536,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.178227240178535,"endHours":8.178227240178536,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.178227240178536,"endHours":9.178227240178536,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.178227240178536,"endHours":10.178227240178536,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.178227240178536,"endHours":11.178227240178536,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.178227240178536,"endHours":12.178227240178536,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.178227240178536,"endHours":13.178227240178536,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.178227240178536,"endHours":14.178227240178536,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.178227240178536,"endHours":15.178227240178536,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.178227240178536,"endHours":16.178227240178536,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.178227240178536,"endHours":17.178227240178536,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.178227240178536,"endHours":18.178227240178536,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.178227240178536,"endHours":19.178227240178536,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.178227240178536,"endHours":20.178227240178536,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.178227240178536,"endHours":21.178227240178536,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.178227240178536,"endHours":22.178227240178536,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.178227240178536,"endHours":23.178227240178536,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.178227240178536,"endHours":24.178227240178536,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.178227240178536,"endHours":25.178227240178536,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.178227240178536,"endHours":26.178227240178536,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.178227240178536,"endHours":27.178227240178536,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.178227240178536,"endHours":28.178227240178536,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.178227240178536,"endHours":29.178227240178536,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.178227240178536,"endHours":30.178227240178536,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.178227240178536,"endHours":31.178227240178536,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-18.661580648868057,"eotMinutes":-12.76480550687915,"ayanamsa":23.4489}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Amāvasyā · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","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 January 27, 1971 CE · Ṛṣikeśa · Vidhyamitra","description":"January 27, 1971 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 07:11, sūryāsta 17:49.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1971-01-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1971-01-27","sa":"https://sa.vidhyamitra.com/city/rishikesh/1971-01-27","hi":"https://hi.vidhyamitra.com/city/rishikesh/1971-01-27","x-default":"https://vidhyamitra.com/city/rishikesh/1971-01-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T13:52:45.506Z","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":"2026-05-19T13:52:45.506Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T13:52:45.506Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}