{"id":"vidhyamitra:city-day:jammu:1981-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/jammu/1981-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-13","date_display":"January 13, 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":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444617.770833,"kali_year":5082,"ahargana":1856152.2708,"sun":{"sidereal_longitude":269.1023,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":354.5831,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":85.4807,"elapsed_within_tithi_degrees":1.4807},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.5831,"elapsed_within_degrees":7.9164},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.6854},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"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":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444617.770833,"ahargana":1856152.2708,"kali_year":5082,"ayanamsa_lahiri":23.5881,"grahas":{"sun":{"sidereal_longitude":269.18438100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":354.117681,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false,"latitude":-3.9893},"mars":{"sidereal_longitude":287.036781,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":277.37348099999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":166.62898100000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":248.882381,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":165.93158100000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.1203,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.1203,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"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":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444617.770833,"kali_year":5082,"ahargana":1856152.2708,"sun":{"sidereal_longitude":269.1023,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":354.5831,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":85.4807,"elapsed_within_tithi_degrees":1.4807},"nakshatra":{"number":27,"name":"Revatī","pada":3,"moon_longitude":354.5831,"elapsed_within_degrees":7.9164},"yoga":{"number":20,"name":"Śiva","sum_longitude":263.6854},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.989,"elongation":85.481},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.989,"opposition_distance":94.519}},"eclipse_window_40days":[{"offset_days":7,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"city":{"slug":"jammu","name":"Jammu, J&K","lat":32.7266,"lon":74.857,"tz_offset_hours":5.5,"state":"J&K","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"jammu","name":"Jammu, J&K","lat":32.7266,"lon":74.857,"tz_offset_hours":5.5,"state":"J&K","country":"IN","tier":"tier-1"},"sunriseLocal":"07:34","sunsetLocal":"17:45","solarNoonLocal":"12:39","dayLengthHours":10.189744439601563,"dayLengthDisplay":"10 Hours 11 Mins 23 Secs","nightLengthDisplay":"13 Hours 48 Mins 37 Secs","moonriseLocal":"11:58","moonsetLocal":"00:40","rahuKala":{"name":"Rāhu Kāla","start":"15:12","end":"16:28","startHours":15.200901634756617,"endHours":16.474619689706813,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:06","end":"11:23","startHours":10.106029414955835,"endHours":11.37974746990603,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:39","end":"13:56","startHours":12.653465524856227,"endHours":13.927183579806421,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:56","end":"10:17","startHours":9.936200340962476,"endHours":10.275858488949194,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:59","end":"08:15","startHours":7.9831659900388425,"endHours":8.254892508428217,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:19","end":"13:00","startHours":12.313807376869509,"endHours":12.993123672842945,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:12","end":"06:53","startHours":6.1999607131085686,"endHours":6.879277009082006,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:43","end":"07:34","startHours":6.709447935088647,"endHours":7.558593305055444,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:02","startHours":14.35175626478982,"endHours":15.031072560763258,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:33","end":"17:57","startHours":17.548337744657008,"endHours":17.948337744657007,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:45","end":"18:10","startHours":17.748337744657007,"endHours":18.172910429640407,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:30","end":"19:15","startHours":17.498337744657007,"endHours":19.248337744657007,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:19","end":"01:00","startHours":24.31380737686951,"endHours":24.993123672842945,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:34","end":"08:50","startHours":7.558593305055444,"endHours":8.83231136000564,"quality":"inauspicious"},{"name":"Udveg","start":"08:50","end":"10:06","startHours":8.83231136000564,"endHours":10.106029414955835,"quality":"inauspicious"},{"name":"Chala","start":"10:06","end":"11:23","startHours":10.106029414955835,"endHours":11.37974746990603,"quality":"neutral"},{"name":"Labha","start":"11:23","end":"12:39","startHours":11.37974746990603,"endHours":12.653465524856227,"quality":"auspicious"},{"name":"Amṛta","start":"12:39","end":"13:56","startHours":12.653465524856227,"endHours":13.927183579806421,"quality":"auspicious"},{"name":"Kāla","start":"13:56","end":"15:12","startHours":13.927183579806421,"endHours":15.200901634756617,"quality":"inauspicious"},{"name":"Śubha","start":"15:12","end":"16:28","startHours":15.200901634756617,"endHours":16.474619689706813,"quality":"auspicious"},{"name":"Roga","start":"16:28","end":"17:45","startHours":16.474619689706813,"endHours":17.748337744657007,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:45","end":"19:28","startHours":17.748337744657007,"endHours":19.474619689706813,"quality":"inauspicious"},{"name":"Śubha","start":"19:28","end":"21:12","startHours":19.474619689706813,"endHours":21.200901634756615,"quality":"auspicious"},{"name":"Roga","start":"21:12","end":"22:56","startHours":21.200901634756615,"endHours":22.92718357980642,"quality":"inauspicious"},{"name":"Udveg","start":"22:56","end":"00:39","startHours":22.92718357980642,"endHours":24.653465524856227,"quality":"inauspicious"},{"name":"Chala","start":"00:39","end":"02:23","startHours":24.653465524856227,"endHours":26.37974746990603,"quality":"neutral"},{"name":"Labha","start":"02:23","end":"04:06","startHours":26.37974746990603,"endHours":28.106029414955835,"quality":"auspicious"},{"name":"Amṛta","start":"04:06","end":"05:50","startHours":28.106029414955835,"endHours":29.83231136000564,"quality":"auspicious"},{"name":"Kāla","start":"05:50","end":"07:34","startHours":29.83231136000564,"endHours":31.558593305055446,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:34","end":"08:34","startHours":7.558593305055444,"endHours":8.558593305055444,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:34","end":"09:34","startHours":8.558593305055444,"endHours":9.558593305055444,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:34","end":"10:34","startHours":9.558593305055444,"endHours":10.558593305055444,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:34","end":"11:34","startHours":10.558593305055444,"endHours":11.558593305055444,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:34","end":"12:34","startHours":11.558593305055444,"endHours":12.558593305055444,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:34","end":"13:34","startHours":12.558593305055444,"endHours":13.558593305055444,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:34","end":"14:34","startHours":13.558593305055444,"endHours":14.558593305055444,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:34","end":"15:34","startHours":14.558593305055444,"endHours":15.558593305055444,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:34","end":"16:34","startHours":15.558593305055444,"endHours":16.558593305055446,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:34","end":"17:34","startHours":16.558593305055446,"endHours":17.558593305055446,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:34","end":"18:34","startHours":17.558593305055446,"endHours":18.558593305055446,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:34","end":"19:34","startHours":18.558593305055446,"endHours":19.558593305055446,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:34","end":"20:34","startHours":19.558593305055446,"endHours":20.558593305055446,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:34","end":"21:34","startHours":20.558593305055446,"endHours":21.558593305055446,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:34","end":"22:34","startHours":21.558593305055446,"endHours":22.558593305055446,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:34","end":"23:34","startHours":22.558593305055446,"endHours":23.558593305055446,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:34","end":"00:34","startHours":23.558593305055446,"endHours":24.558593305055446,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:34","end":"01:34","startHours":24.558593305055446,"endHours":25.558593305055446,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:34","end":"02:34","startHours":25.558593305055446,"endHours":26.558593305055446,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:34","end":"03:34","startHours":26.558593305055446,"endHours":27.558593305055446,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:34","end":"04:34","startHours":27.558593305055446,"endHours":28.558593305055446,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:34","end":"05:34","startHours":28.558593305055446,"endHours":29.558593305055446,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:34","end":"06:34","startHours":29.558593305055446,"endHours":30.558593305055446,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:34","end":"07:34","startHours":30.558593305055446,"endHours":31.558593305055446,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.51402002668385,"eotMinutes":-8.635931491373626,"ayanamsa":23.5881}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Aṣṭamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi_eve_of_ingress":"Makara"},"precedence":4}],"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":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"jammu"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 13, 1981 CE · Jammu, J&K · Vidhyamitra","description":"January 13, 1981 CE for Jammu, J&K: Śukla Aṣṭamī, sūryodaya 07:34, sūryāsta 17:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/jammu/1981-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/jammu/1981-01-13","sa":"https://sa.vidhyamitra.com/city/jammu/1981-01-13","hi":"https://hi.vidhyamitra.com/city/jammu/1981-01-13","x-default":"https://vidhyamitra.com/city/jammu/1981-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:52:41.958Z","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":"2026-06-02T20:52:41.958Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:52:41.958Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}