{"id":"vidhyamitra:city-day:surat:1981-07-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/surat/1981-07-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-07","date_display":"July 7, 1981 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":1981,"month":7,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444792.770833,"kali_year":5083,"ahargana":1856327.2708,"sun":{"sidereal_longitude":80.9237,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":146.9004,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":65.9766,"elapsed_within_tithi_degrees":5.9766},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":146.9004,"elapsed_within_degrees":0.2337},"yoga":{"number":18,"name":"Varīyān","sum_longitude":227.8241},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1981,"month":7,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444792.770833,"ahargana":1856327.2708,"kali_year":5083,"ayanamsa_lahiri":23.5948,"grahas":{"sun":{"sidereal_longitude":81.25649499999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"moon":{"sidereal_longitude":147.64559499999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false,"latitude":3.1273},"mars":{"sidereal_longitude":58.93109500000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":63.296794999999975,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":159.403095,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":105.44019500000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":159.97249499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":102.8479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.8479,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":1981,"month":7,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444792.770833,"kali_year":5083,"ahargana":1856327.2708,"sun":{"sidereal_longitude":80.9237,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":146.9004,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":65.9766,"elapsed_within_tithi_degrees":5.9766},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":146.9004,"elapsed_within_degrees":0.2337},"yoga":{"number":18,"name":"Varīyān","sum_longitude":227.8241},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.127,"elongation":65.977},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.127,"opposition_distance":114.023}},"eclipse_window_40days":[{"offset_days":10,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128}]},"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"tier2":{"city":{"slug":"surat","name":"Surat, Gujarat","lat":21.1702,"lon":72.8311,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"mega","elevation_m":13},"sunriseLocal":"06:02","sunsetLocal":"19:24","solarNoonLocal":"12:43","dayLengthHours":13.368423125551832,"dayLengthDisplay":"13 Hours 22 Mins 06 Secs","nightLengthDisplay":"10 Hours 37 Mins 54 Secs","moonriseLocal":"11:01","moonsetLocal":"23:17","rahuKala":{"name":"Rāhu Kāla","start":"16:04","end":"17:44","startHours":16.06206744645965,"endHours":17.73312033715363,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:23","end":"11:03","startHours":9.377855883683733,"endHours":11.048908774377713,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:43","end":"14:23","startHours":12.719961665071692,"endHours":14.39101455576567,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:09","end":"09:36","startHours":9.155048831591204,"endHours":9.600662935776263,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:36","end":"06:57","startHours":6.592767732527102,"endHours":6.9492590158751515,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:16","end":"13:10","startHours":12.27434756088663,"endHours":13.165575769256753,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:09","startHours":4.253293685555532,"endHours":5.144521893925654,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:55","end":"06:02","startHours":4.921714841833123,"endHours":6.035750102295776,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:57","end":"15:50","startHours":14.948032185996997,"endHours":15.83926039436712,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:12","end":"19:36","startHours":19.20417322784761,"endHours":19.604173227847607,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:24","end":"19:58","startHours":19.404173227847608,"endHours":19.961190858078933,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:09","end":"20:54","startHours":19.154173227847608,"endHours":20.904173227847608,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:16","end":"01:10","startHours":24.274347560886632,"endHours":25.165575769256755,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:02","end":"07:42","startHours":6.035750102295776,"endHours":7.706802992989754,"quality":"inauspicious"},{"name":"Udveg","start":"07:42","end":"09:23","startHours":7.706802992989754,"endHours":9.377855883683733,"quality":"inauspicious"},{"name":"Chala","start":"09:23","end":"11:03","startHours":9.377855883683733,"endHours":11.048908774377713,"quality":"neutral"},{"name":"Labha","start":"11:03","end":"12:43","startHours":11.048908774377713,"endHours":12.719961665071692,"quality":"auspicious"},{"name":"Amṛta","start":"12:43","end":"14:23","startHours":12.719961665071692,"endHours":14.39101455576567,"quality":"auspicious"},{"name":"Kāla","start":"14:23","end":"16:04","startHours":14.39101455576567,"endHours":16.06206744645965,"quality":"inauspicious"},{"name":"Śubha","start":"16:04","end":"17:44","startHours":16.06206744645965,"endHours":17.73312033715363,"quality":"auspicious"},{"name":"Roga","start":"17:44","end":"19:24","startHours":17.73312033715363,"endHours":19.404173227847608,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:24","end":"20:44","startHours":19.404173227847608,"endHours":20.73312033715363,"quality":"inauspicious"},{"name":"Śubha","start":"20:44","end":"22:04","startHours":20.73312033715363,"endHours":22.06206744645965,"quality":"auspicious"},{"name":"Roga","start":"22:04","end":"23:23","startHours":22.06206744645965,"endHours":23.391014555765672,"quality":"inauspicious"},{"name":"Udveg","start":"23:23","end":"00:43","startHours":23.391014555765672,"endHours":24.719961665071693,"quality":"inauspicious"},{"name":"Chala","start":"00:43","end":"02:03","startHours":24.719961665071693,"endHours":26.048908774377715,"quality":"neutral"},{"name":"Labha","start":"02:03","end":"03:23","startHours":26.048908774377715,"endHours":27.377855883683733,"quality":"auspicious"},{"name":"Amṛta","start":"03:23","end":"04:42","startHours":27.377855883683733,"endHours":28.706802992989754,"quality":"auspicious"},{"name":"Kāla","start":"04:42","end":"06:02","startHours":28.706802992989754,"endHours":30.035750102295776,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:02","end":"07:02","startHours":6.035750102295776,"endHours":7.035750102295776,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:02","end":"08:02","startHours":7.035750102295776,"endHours":8.035750102295776,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:02","end":"09:02","startHours":8.035750102295776,"endHours":9.035750102295776,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:02","end":"10:02","startHours":9.035750102295776,"endHours":10.035750102295776,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:02","end":"11:02","startHours":10.035750102295776,"endHours":11.035750102295776,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:02","end":"12:02","startHours":11.035750102295776,"endHours":12.035750102295776,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:02","end":"13:02","startHours":12.035750102295776,"endHours":13.035750102295776,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:02","end":"14:02","startHours":13.035750102295776,"endHours":14.035750102295776,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:02","end":"15:02","startHours":14.035750102295776,"endHours":15.035750102295776,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:02","end":"16:02","startHours":15.035750102295776,"endHours":16.035750102295776,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:02","end":"17:02","startHours":16.035750102295776,"endHours":17.035750102295776,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:02","end":"18:02","startHours":17.035750102295776,"endHours":18.035750102295776,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:02","end":"19:02","startHours":18.035750102295776,"endHours":19.035750102295776,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:02","end":"20:02","startHours":19.035750102295776,"endHours":20.035750102295776,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:02","end":"21:02","startHours":20.035750102295776,"endHours":21.035750102295776,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:02","end":"22:02","startHours":21.035750102295776,"endHours":22.035750102295776,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:02","end":"23:02","startHours":22.035750102295776,"endHours":23.035750102295776,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:02","end":"00:02","startHours":23.035750102295776,"endHours":24.035750102295776,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:02","end":"01:02","startHours":24.035750102295776,"endHours":25.035750102295776,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:02","end":"02:02","startHours":25.035750102295776,"endHours":26.035750102295776,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:02","end":"03:02","startHours":26.035750102295776,"endHours":27.035750102295776,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:02","end":"04:02","startHours":27.035750102295776,"endHours":28.035750102295776,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:02","end":"05:02","startHours":28.035750102295776,"endHours":29.035750102295776,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:02","end":"06:02","startHours":29.035750102295776,"endHours":30.035750102295776,"planetary_lord":"Saturn"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":22.609347447816923,"eotMinutes":-4.522099904301516,"ayanamsa":23.5948}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Ṣaṣṭhī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"surat"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 7, 1981 CE · Surat, Gujarat · Vidhyamitra","description":"July 7, 1981 CE for Surat, Gujarat: Śukla Ṣaṣṭhī, sūryodaya 06:02, sūryāsta 19:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/surat/1981-07-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/surat/1981-07-07","sa":"https://sa.vidhyamitra.com/city/surat/1981-07-07","hi":"https://hi.vidhyamitra.com/city/surat/1981-07-07","x-default":"https://vidhyamitra.com/city/surat/1981-07-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T01:16:53.776Z","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":"2026-06-02T01:16:53.776Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T01:16:53.776Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}