{"id":"vidhyamitra:city-day:rishikesh:1938-09-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1938-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1938-09-18","date_display":"September 18, 1938 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":1938,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429159.770833,"kali_year":5040,"ahargana":1840694.2708,"sun":{"sidereal_longitude":150.8828,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":74.7023,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.8196,"elapsed_within_tithi_degrees":7.8196},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":74.7023,"elapsed_within_degrees":8.0357},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":225.5851},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1938,"month":9,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2429159.770833,"ahargana":1840694.2708,"kali_year":5040,"ayanamsa_lahiri":22.9968,"grahas":{"sun":{"sidereal_longitude":151.467491,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":73.36499100000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":-3.0984},"mars":{"sidereal_longitude":134.33149100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":135.46559100000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":301.636891,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":198.42689100000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":353.616091,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":211.1595,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":31.1595,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":1938,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429159.770833,"kali_year":5040,"ahargana":1840694.2708,"sun":{"sidereal_longitude":150.8828,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":74.7023,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":283.8196,"elapsed_within_tithi_degrees":7.8196},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":74.7023,"elapsed_within_degrees":8.0357},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":225.5851},"karana":{"half_tithi_index":47,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.098,"elongation":76.18},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.098,"opposition_distance":103.82}},"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":"06:01","sunsetLocal":"18:19","solarNoonLocal":"12:10","dayLengthHours":12.298471442655163,"dayLengthDisplay":"12 Hours 17 Mins 54 Secs","nightLengthDisplay":"11 Hours 42 Mins 06 Secs","moonriseLocal":"23:57","moonsetLocal":"13:59","rahuKala":{"name":"Rāhu Kāla","start":"16:47","end":"18:19","startHours":16.78391975476778,"endHours":18.321228685099676,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:10","end":"13:43","startHours":12.171992963772094,"endHours":13.70930189410399,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:15","end":"16:47","startHours":15.246610824435887,"endHours":16.78391975476778,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:18","startHours":8.892400579064052,"endHours":9.302349627152557,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:52","startHours":6.535193552555145,"endHours":6.86315279102595,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:35","startHours":11.76204391568359,"endHours":12.5819420118606,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:23","end":"05:12","startHours":4.382961050090492,"endHours":5.202859146267503,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:00","end":"06:01","startHours":4.99788462222325,"endHours":6.022757242444514,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:02","startHours":14.221738204214624,"endHours":15.041636300391636,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:07","end":"18:31","startHours":18.121228685099677,"endHours":18.521228685099675,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:19","end":"18:50","startHours":18.321228685099676,"endHours":18.83366499521031,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:04","end":"19:49","startHours":18.071228685099676,"endHours":19.821228685099676,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:35","startHours":23.762043915683588,"endHours":24.5819420118606,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:01","end":"07:34","startHours":6.022757242444514,"endHours":7.560066172776409,"quality":"inauspicious"},{"name":"Chala","start":"07:34","end":"09:06","startHours":7.560066172776409,"endHours":9.097375103108305,"quality":"neutral"},{"name":"Labha","start":"09:06","end":"10:38","startHours":9.097375103108305,"endHours":10.6346840334402,"quality":"auspicious"},{"name":"Amṛta","start":"10:38","end":"12:10","startHours":10.6346840334402,"endHours":12.171992963772094,"quality":"auspicious"},{"name":"Kāla","start":"12:10","end":"13:43","startHours":12.171992963772094,"endHours":13.70930189410399,"quality":"inauspicious"},{"name":"Śubha","start":"13:43","end":"15:15","startHours":13.70930189410399,"endHours":15.246610824435887,"quality":"auspicious"},{"name":"Roga","start":"15:15","end":"16:47","startHours":15.246610824435887,"endHours":16.78391975476778,"quality":"inauspicious"},{"name":"Udveg","start":"16:47","end":"18:19","startHours":16.78391975476778,"endHours":18.321228685099676,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:19","end":"19:47","startHours":18.321228685099676,"endHours":19.78391975476778,"quality":"auspicious"},{"name":"Roga","start":"19:47","end":"21:15","startHours":19.78391975476778,"endHours":21.246610824435884,"quality":"inauspicious"},{"name":"Udveg","start":"21:15","end":"22:43","startHours":21.246610824435884,"endHours":22.70930189410399,"quality":"inauspicious"},{"name":"Chala","start":"22:43","end":"00:10","startHours":22.70930189410399,"endHours":24.171992963772094,"quality":"neutral"},{"name":"Labha","start":"00:10","end":"01:38","startHours":24.171992963772094,"endHours":25.634684033440198,"quality":"auspicious"},{"name":"Amṛta","start":"01:38","end":"03:06","startHours":25.634684033440198,"endHours":27.097375103108305,"quality":"auspicious"},{"name":"Kāla","start":"03:06","end":"04:34","startHours":27.097375103108305,"endHours":28.56006617277641,"quality":"inauspicious"},{"name":"Śubha","start":"04:34","end":"06:01","startHours":28.56006617277641,"endHours":30.022757242444513,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.022757242444514,"endHours":7.022757242444514,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.022757242444514,"endHours":8.022757242444513,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.022757242444513,"endHours":9.022757242444513,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.022757242444513,"endHours":10.022757242444513,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.022757242444513,"endHours":11.022757242444513,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.022757242444513,"endHours":12.022757242444513,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.022757242444513,"endHours":13.022757242444513,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.022757242444513,"endHours":14.022757242444513,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.022757242444513,"endHours":15.022757242444513,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.022757242444513,"endHours":16.022757242444513,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.022757242444513,"endHours":17.022757242444513,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.022757242444513,"endHours":18.022757242444513,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.022757242444513,"endHours":19.022757242444513,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.022757242444513,"endHours":20.022757242444513,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.022757242444513,"endHours":21.022757242444513,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.022757242444513,"endHours":22.022757242444513,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.022757242444513,"endHours":23.022757242444513,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.022757242444513,"endHours":24.022757242444513,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.022757242444513,"endHours":25.022757242444513,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.022757242444513,"endHours":26.022757242444513,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.022757242444513,"endHours":27.022757242444513,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.022757242444513,"endHours":28.022757242444513,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.022757242444513,"endHours":29.022757242444513,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.022757242444513,"endHours":30.022757242444513,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":2.1988470448898245,"eotMinutes":6.610022173674397,"ayanamsa":22.9968}},"calendars":{"vikram_samvat":1995,"vikram_samvatsara":"Khara","saka_samvat":1860,"saka_samvatsara":"Bahudhānya","bengali_samvat":1345,"malayalam_era":1114,"nanakshahi_year":469,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Navamī · Vikram 1995 Khara · Śaka 1860 Bahudhānya"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 September 18, 1938 CE · Ṛṣikeśa · Vidhyamitra","description":"September 18, 1938 CE for Ṛṣikeśa: Kṛṣṇa Navamī, sūryodaya 06:01, sūryāsta 18:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1938-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1938-09-18","sa":"https://sa.vidhyamitra.com/city/rishikesh/1938-09-18","hi":"https://hi.vidhyamitra.com/city/rishikesh/1938-09-18","x-default":"https://vidhyamitra.com/city/rishikesh/1938-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T13:12:19.682Z","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":"2026-06-01T13:12:19.682Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T13:12:19.682Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}