{"id":"vidhyamitra:city-day:rishikesh:2131-07-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2131-07-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-07-28","date_display":"July 28, 2131 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":2131,"month":7,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499599.770833,"kali_year":5233,"ahargana":1911134.2708,"sun":{"sidereal_longitude":98.1553,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":143.8944,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.7391,"elapsed_within_tithi_degrees":9.7391},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":143.8944,"elapsed_within_degrees":10.5611},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.0497},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2131,"month":7,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499599.770833,"ahargana":1911134.2708,"kali_year":5233,"ayanamsa_lahiri":25.6909,"grahas":{"sun":{"sidereal_longitude":98.969965,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"moon":{"sidereal_longitude":142.699865,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false,"latitude":4.0771},"mars":{"sidereal_longitude":358.805665,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":83.90516500000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":53.914364999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":100.755065,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":192.29306499999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":78.9093,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":258.9093,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2131,"month":7,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499599.770833,"kali_year":5233,"ahargana":1911134.2708,"sun":{"sidereal_longitude":98.1553,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":143.8944,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.7391,"elapsed_within_tithi_degrees":9.7391},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":143.8944,"elapsed_within_degrees":10.5611},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.0497},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.077,"elongation":45.739},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.077,"opposition_distance":134.261}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":0.962,"elongation":2.89}]},"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":"05:33","sunsetLocal":"19:14","solarNoonLocal":"12:23","dayLengthHours":13.681685572445502,"dayLengthDisplay":"13 Hours 40 Mins 54 Secs","nightLengthDisplay":"10 Hours 19 Mins 06 Secs","moonriseLocal":"09:05","moonsetLocal":"21:31","rahuKala":{"name":"Rāhu Kāla","start":"08:58","end":"10:40","startHours":8.964577818161978,"endHours":10.674788514717665,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:06","end":"15:48","startHours":14.095209907829041,"endHours":15.805420604384729,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:33","end":"07:15","startHours":5.544156425050603,"endHours":7.254367121606291,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:12","startHours":8.736549725287887,"endHours":9.19260591103607,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:07","end":"06:29","startHours":6.114226657235832,"endHours":6.479071605834379,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:50","startHours":11.92894302552517,"endHours":12.841055397021536,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:43","end":"04:38","startHours":3.719931682057869,"endHours":4.632044053554236,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:24","end":"05:33","startHours":4.404015960680145,"endHours":5.544156425050603,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:40","end":"15:35","startHours":14.665280140014271,"endHours":15.577392511510638,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:02","end":"19:26","startHours":19.025841997496105,"endHours":19.425841997496104,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:14","end":"19:48","startHours":19.225841997496104,"endHours":19.795912229681335,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:59","end":"20:44","startHours":18.975841997496104,"endHours":20.725841997496104,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:50","startHours":23.928943025525168,"endHours":24.841055397021538,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:33","end":"07:15","startHours":5.544156425050603,"endHours":7.254367121606291,"quality":"inauspicious"},{"name":"Śubha","start":"07:15","end":"08:58","startHours":7.254367121606291,"endHours":8.964577818161978,"quality":"auspicious"},{"name":"Roga","start":"08:58","end":"10:40","startHours":8.964577818161978,"endHours":10.674788514717665,"quality":"inauspicious"},{"name":"Udveg","start":"10:40","end":"12:23","startHours":10.674788514717665,"endHours":12.384999211273353,"quality":"inauspicious"},{"name":"Chala","start":"12:23","end":"14:06","startHours":12.384999211273353,"endHours":14.095209907829041,"quality":"neutral"},{"name":"Labha","start":"14:06","end":"15:48","startHours":14.095209907829041,"endHours":15.805420604384729,"quality":"auspicious"},{"name":"Amṛta","start":"15:48","end":"17:31","startHours":15.805420604384729,"endHours":17.515631300940417,"quality":"auspicious"},{"name":"Kāla","start":"17:31","end":"19:14","startHours":17.515631300940417,"endHours":19.225841997496104,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:14","end":"20:31","startHours":19.225841997496104,"endHours":20.515631300940417,"quality":"auspicious"},{"name":"Amṛta","start":"20:31","end":"21:48","startHours":20.515631300940417,"endHours":21.80542060438473,"quality":"auspicious"},{"name":"Kāla","start":"21:48","end":"23:06","startHours":21.80542060438473,"endHours":23.09520990782904,"quality":"inauspicious"},{"name":"Śubha","start":"23:06","end":"00:23","startHours":23.09520990782904,"endHours":24.384999211273353,"quality":"auspicious"},{"name":"Roga","start":"00:23","end":"01:40","startHours":24.384999211273353,"endHours":25.674788514717665,"quality":"inauspicious"},{"name":"Udveg","start":"01:40","end":"02:58","startHours":25.674788514717665,"endHours":26.964577818161978,"quality":"inauspicious"},{"name":"Chala","start":"02:58","end":"04:15","startHours":26.964577818161978,"endHours":28.25436712160629,"quality":"neutral"},{"name":"Labha","start":"04:15","end":"05:33","startHours":28.25436712160629,"endHours":29.544156425050602,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:33","end":"06:33","startHours":5.544156425050603,"endHours":6.544156425050603,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:33","end":"07:33","startHours":6.544156425050603,"endHours":7.544156425050603,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:33","end":"08:33","startHours":7.544156425050603,"endHours":8.544156425050602,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:33","end":"09:33","startHours":8.544156425050602,"endHours":9.544156425050602,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:33","end":"10:33","startHours":9.544156425050602,"endHours":10.544156425050602,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:33","end":"11:33","startHours":10.544156425050602,"endHours":11.544156425050602,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:33","end":"12:33","startHours":11.544156425050602,"endHours":12.544156425050602,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:33","end":"13:33","startHours":12.544156425050602,"endHours":13.544156425050602,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:33","end":"14:33","startHours":13.544156425050602,"endHours":14.544156425050602,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:33","end":"15:33","startHours":14.544156425050602,"endHours":15.544156425050602,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:33","end":"16:33","startHours":15.544156425050602,"endHours":16.544156425050602,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:33","end":"17:33","startHours":16.544156425050602,"endHours":17.544156425050602,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:33","end":"18:33","startHours":17.544156425050602,"endHours":18.544156425050602,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:33","end":"19:33","startHours":18.544156425050602,"endHours":19.544156425050602,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:33","end":"20:33","startHours":19.544156425050602,"endHours":20.544156425050602,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:33","end":"21:33","startHours":20.544156425050602,"endHours":21.544156425050602,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:33","end":"22:33","startHours":21.544156425050602,"endHours":22.544156425050602,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:33","end":"23:33","startHours":22.544156425050602,"endHours":23.544156425050602,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:33","end":"00:33","startHours":23.544156425050602,"endHours":24.544156425050602,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:33","end":"01:33","startHours":24.544156425050602,"endHours":25.544156425050602,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:33","end":"02:33","startHours":25.544156425050602,"endHours":26.544156425050602,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:33","end":"03:33","startHours":26.544156425050602,"endHours":27.544156425050602,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:33","end":"04:33","startHours":27.544156425050602,"endHours":28.544156425050602,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:33","end":"05:33","startHours":28.544156425050602,"endHours":29.544156425050602,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"West","rahuVasa":"East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":19.095758782081177,"eotMinutes":-6.170352676401169,"ayanamsa":25.6909}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Caturthī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 July 28, 2131 CE · Ṛṣikeśa · Vidhyamitra","description":"July 28, 2131 CE for Ṛṣikeśa: Śukla Caturthī, sūryodaya 05:33, sūryāsta 19:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2131-07-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2131-07-28","sa":"https://sa.vidhyamitra.com/city/rishikesh/2131-07-28","hi":"https://hi.vidhyamitra.com/city/rishikesh/2131-07-28","x-default":"https://vidhyamitra.com/city/rishikesh/2131-07-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T06:03:10.408Z","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":"2026-05-23T06:03:10.408Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T06:03:10.408Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}