{"id":"vidhyamitra:city-day:rishikesh:2028-02-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2028-02-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2028-02-04","date_display":"February 4, 2028 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":2028,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461805.770833,"kali_year":5129,"ahargana":1873340.2708,"sun":{"sidereal_longitude":290.4503,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":26.8913,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":96.4411,"elapsed_within_tithi_degrees":0.4411},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":26.8913,"elapsed_within_degrees":0.2246},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.3416},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2028,"month":2,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461805.770833,"ahargana":1873340.2708,"kali_year":5129,"ayanamsa_lahiri":24.2454,"grahas":{"sun":{"sidereal_longitude":290.484473,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":23.24677300000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false,"latitude":4.3366},"mars":{"sidereal_longitude":300.080473,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":286.29747299999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":152.270573,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":331.3714729999999,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":358.371073,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":281.4173,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":101.4173,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":2028,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461805.770833,"kali_year":5129,"ahargana":1873340.2708,"sun":{"sidereal_longitude":290.4503,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":26.8913,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":96.4411,"elapsed_within_tithi_degrees":0.4411},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1,"moon_longitude":26.8913,"elapsed_within_degrees":0.2246},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.3416},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.337,"elongation":96.441},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.337,"opposition_distance":83.559}},"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":"07:06","sunsetLocal":"17:56","solarNoonLocal":"12:31","dayLengthHours":10.825410606872204,"dayLengthDisplay":"10 Hours 49 Mins 31 Secs","nightLengthDisplay":"13 Hours 10 Mins 29 Secs","moonriseLocal":"11:58","moonsetLocal":"01:26","rahuKala":{"name":"Rāhu Kāla","start":"11:10","end":"12:31","startHours":11.163845746940863,"endHours":12.51702207279989,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:13","end":"16:35","startHours":15.223374724517939,"endHours":16.576551050376967,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:27","end":"09:49","startHours":8.457493095222812,"endHours":9.810669421081837,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:38","end":"09:59","startHours":9.6302459109673,"endHours":9.991092931196373,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:51","startHours":7.555375544650128,"endHours":7.844053160833387,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:53","startHours":12.156175052570816,"endHours":12.877869093028963,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:40","end":"06:23","startHours":5.660928688447493,"endHours":6.382622728905639,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:06","startHours":6.202199218791103,"endHours":7.104316769363787,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:03","startHours":14.321257173945256,"endHours":15.042951214403402,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.729727376235992,"endHours":18.12972737623599,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:23","startHours":17.92972737623599,"endHours":18.380786151522333,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.67972737623599,"endHours":19.42972737623599,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:53","startHours":24.156175052570816,"endHours":24.877869093028963,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:06","end":"08:27","startHours":7.104316769363787,"endHours":8.457493095222812,"quality":"neutral"},{"name":"Labha","start":"08:27","end":"09:49","startHours":8.457493095222812,"endHours":9.810669421081837,"quality":"auspicious"},{"name":"Amṛta","start":"09:49","end":"11:10","startHours":9.810669421081837,"endHours":11.163845746940863,"quality":"auspicious"},{"name":"Kāla","start":"11:10","end":"12:31","startHours":11.163845746940863,"endHours":12.51702207279989,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"13:52","startHours":12.51702207279989,"endHours":13.870198398658914,"quality":"auspicious"},{"name":"Roga","start":"13:52","end":"15:13","startHours":13.870198398658914,"endHours":15.223374724517939,"quality":"inauspicious"},{"name":"Udveg","start":"15:13","end":"16:35","startHours":15.223374724517939,"endHours":16.576551050376967,"quality":"inauspicious"},{"name":"Chala","start":"16:35","end":"17:56","startHours":16.576551050376967,"endHours":17.92972737623599,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:56","end":"19:35","startHours":17.92972737623599,"endHours":19.576551050376967,"quality":"inauspicious"},{"name":"Udveg","start":"19:35","end":"21:13","startHours":19.576551050376967,"endHours":21.22337472451794,"quality":"inauspicious"},{"name":"Chala","start":"21:13","end":"22:52","startHours":21.22337472451794,"endHours":22.870198398658914,"quality":"neutral"},{"name":"Labha","start":"22:52","end":"00:31","startHours":22.870198398658914,"endHours":24.51702207279989,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"02:10","startHours":24.51702207279989,"endHours":26.163845746940865,"quality":"auspicious"},{"name":"Kāla","start":"02:10","end":"03:49","startHours":26.163845746940865,"endHours":27.81066942108184,"quality":"inauspicious"},{"name":"Śubha","start":"03:49","end":"05:27","startHours":27.81066942108184,"endHours":29.457493095222812,"quality":"auspicious"},{"name":"Roga","start":"05:27","end":"07:06","startHours":29.457493095222812,"endHours":31.104316769363788,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:06","end":"08:06","startHours":7.104316769363787,"endHours":8.104316769363788,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:06","end":"09:06","startHours":8.104316769363788,"endHours":9.104316769363788,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:06","end":"10:06","startHours":9.104316769363788,"endHours":10.104316769363788,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:06","end":"11:06","startHours":10.104316769363788,"endHours":11.104316769363788,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:06","end":"12:06","startHours":11.104316769363788,"endHours":12.104316769363788,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:06","end":"13:06","startHours":12.104316769363788,"endHours":13.104316769363788,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:06","end":"14:06","startHours":13.104316769363788,"endHours":14.104316769363788,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:06","end":"15:06","startHours":14.104316769363788,"endHours":15.104316769363788,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:06","end":"16:06","startHours":15.104316769363788,"endHours":16.104316769363788,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:06","end":"17:06","startHours":16.104316769363788,"endHours":17.104316769363788,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:06","end":"18:06","startHours":17.104316769363788,"endHours":18.104316769363788,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:06","end":"19:06","startHours":18.104316769363788,"endHours":19.104316769363788,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:06","end":"20:06","startHours":19.104316769363788,"endHours":20.104316769363788,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:06","end":"21:06","startHours":20.104316769363788,"endHours":21.104316769363788,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:06","end":"22:06","startHours":21.104316769363788,"endHours":22.104316769363788,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:06","end":"23:06","startHours":22.104316769363788,"endHours":23.104316769363788,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:06","end":"00:06","startHours":23.104316769363788,"endHours":24.104316769363788,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:06","end":"01:06","startHours":24.104316769363788,"endHours":25.104316769363788,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:06","end":"02:06","startHours":25.104316769363788,"endHours":26.104316769363788,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:06","end":"03:06","startHours":26.104316769363788,"endHours":27.104316769363788,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:06","end":"04:06","startHours":27.104316769363788,"endHours":28.104316769363788,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:06","end":"05:06","startHours":28.104316769363788,"endHours":29.104316769363788,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:06","end":"06:06","startHours":29.104316769363788,"endHours":30.104316769363788,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:06","end":"07:06","startHours":30.104316769363788,"endHours":31.104316769363788,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Gada","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":-16.413179864883904,"eotMinutes":-14.091724367993354,"ayanamsa":24.2454}},"calendars":{"vikram_samvat":2085,"vikram_samvatsara":"Durmati","saka_samvat":1950,"saka_samvatsara":"Kīlaka","bengali_samvat":1435,"malayalam_era":1204,"nanakshahi_year":559,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Navamī · Vikram 2085 Durmati · Śaka 1950 Kīlaka"},"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":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Śukla Navamī","url":"/day/-1626101-04-03","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 February 4, 2028 CE · Ṛṣikeśa · Vidhyamitra","description":"February 4, 2028 CE for Ṛṣikeśa: Śukla Navamī, sūryodaya 07:06, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2028-02-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2028-02-04","sa":"https://sa.vidhyamitra.com/city/rishikesh/2028-02-04","hi":"https://hi.vidhyamitra.com/city/rishikesh/2028-02-04","x-default":"https://vidhyamitra.com/city/rishikesh/2028-02-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T08:17:00.282Z","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":"2026-05-15T08:17:00.282Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T08:17:00.282Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}