{"id":"vidhyamitra:city-day:siliguri:1981-07-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/siliguri/1981-07-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-30","date_display":"July 30, 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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444815.770833,"kali_year":5083,"ahargana":1856350.2708,"sun":{"sidereal_longitude":102.726,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":89.8758,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.1498,"elapsed_within_tithi_degrees":11.1498},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.8758,"elapsed_within_degrees":9.8758},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.6019},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444815.770833,"ahargana":1856350.2708,"kali_year":5083,"ayanamsa_lahiri":23.5956,"grahas":{"sun":{"sidereal_longitude":103.20701600000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"moon":{"sidereal_longitude":88.58551599999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false,"latitude":-0.9158},"mars":{"sidereal_longitude":74.484016,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":91.22281600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":162.49111600000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":133.259616,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":161.51311599999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.6293,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.6293,"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":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444815.770833,"kali_year":5083,"ahargana":1856350.2708,"sun":{"sidereal_longitude":102.726,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":89.8758,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":347.1498,"elapsed_within_tithi_degrees":11.1498},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.8758,"elapsed_within_degrees":9.8758},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.6019},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.916,"elongation":12.85},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.916,"opposition_distance":167.15}},"eclipse_window_40days":[{"offset_days":-13,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":1,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"city":{"slug":"siliguri","name":"Siliguri, West Bengal","lat":26.7271,"lon":88.3953,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"siliguri","name":"Siliguri, West Bengal","lat":26.7271,"lon":88.3953,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"sunriseLocal":"05:00","sunsetLocal":"18:25","solarNoonLocal":"11:43","dayLengthHours":13.431898657162428,"dayLengthDisplay":"13 Hours 25 Mins 55 Secs","nightLengthDisplay":"10 Hours 34 Mins 05 Secs","moonriseLocal":"03:55","moonsetLocal":"17:33","rahuKala":{"name":"Rāhu Kāla","start":"13:23","end":"15:04","startHours":13.387878760758309,"endHours":15.066866092903613,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:00","end":"06:40","startHours":4.992942100031791,"endHours":6.6719294321770946,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:21","end":"10:02","startHours":8.350916764322399,"endHours":10.029904096467702,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:08","end":"08:34","startHours":8.127051786703024,"endHours":8.574781741941772,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:33","end":"05:55","startHours":5.552604544080226,"endHours":5.910788508271224,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:16","end":"12:09","startHours":11.261161473374257,"endHours":12.156621383851752,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:12","end":"04:06","startHours":3.2020222790768007,"endHours":4.097482189554296,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:52","end":"05:00","startHours":3.8736172119349224,"endHours":4.992942100031791,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:57","end":"14:51","startHours":13.947541204806743,"endHours":14.843001115284238,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.22484075719422,"endHours":18.624840757194217,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:59","startHours":18.424840757194218,"endHours":18.984503201242653,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.174840757194218,"endHours":19.924840757194218,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:16","end":"00:09","startHours":23.261161473374255,"endHours":24.156621383851753,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:00","end":"06:40","startHours":4.992942100031791,"endHours":6.6719294321770946,"quality":"auspicious"},{"name":"Roga","start":"06:40","end":"08:21","startHours":6.6719294321770946,"endHours":8.350916764322399,"quality":"inauspicious"},{"name":"Udveg","start":"08:21","end":"10:02","startHours":8.350916764322399,"endHours":10.029904096467702,"quality":"inauspicious"},{"name":"Chala","start":"10:02","end":"11:43","startHours":10.029904096467702,"endHours":11.708891428613004,"quality":"neutral"},{"name":"Labha","start":"11:43","end":"13:23","startHours":11.708891428613004,"endHours":13.387878760758309,"quality":"auspicious"},{"name":"Amṛta","start":"13:23","end":"15:04","startHours":13.387878760758309,"endHours":15.066866092903613,"quality":"auspicious"},{"name":"Kāla","start":"15:04","end":"16:45","startHours":15.066866092903613,"endHours":16.745853425048914,"quality":"inauspicious"},{"name":"Śubha","start":"16:45","end":"18:25","startHours":16.745853425048914,"endHours":18.424840757194218,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:25","end":"19:45","startHours":18.424840757194218,"endHours":19.745853425048914,"quality":"auspicious"},{"name":"Kāla","start":"19:45","end":"21:04","startHours":19.745853425048914,"endHours":21.06686609290361,"quality":"inauspicious"},{"name":"Śubha","start":"21:04","end":"22:23","startHours":21.06686609290361,"endHours":22.38787876075831,"quality":"auspicious"},{"name":"Roga","start":"22:23","end":"23:43","startHours":22.38787876075831,"endHours":23.708891428613004,"quality":"inauspicious"},{"name":"Udveg","start":"23:43","end":"01:02","startHours":23.708891428613004,"endHours":25.0299040964677,"quality":"inauspicious"},{"name":"Chala","start":"01:02","end":"02:21","startHours":25.0299040964677,"endHours":26.3509167643224,"quality":"neutral"},{"name":"Labha","start":"02:21","end":"03:40","startHours":26.3509167643224,"endHours":27.671929432177095,"quality":"auspicious"},{"name":"Amṛta","start":"03:40","end":"05:00","startHours":27.671929432177095,"endHours":28.99294210003179,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:00","end":"06:00","startHours":4.992942100031791,"endHours":5.992942100031791,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:00","end":"07:00","startHours":5.992942100031791,"endHours":6.992942100031791,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:00","end":"08:00","startHours":6.992942100031791,"endHours":7.992942100031791,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:00","end":"09:00","startHours":7.992942100031791,"endHours":8.99294210003179,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:00","end":"10:00","startHours":8.99294210003179,"endHours":9.99294210003179,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:00","end":"11:00","startHours":9.99294210003179,"endHours":10.99294210003179,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:00","end":"12:00","startHours":10.99294210003179,"endHours":11.99294210003179,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:00","end":"13:00","startHours":11.99294210003179,"endHours":12.99294210003179,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:00","end":"14:00","startHours":12.99294210003179,"endHours":13.99294210003179,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:00","end":"15:00","startHours":13.99294210003179,"endHours":14.99294210003179,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:00","end":"16:00","startHours":14.99294210003179,"endHours":15.99294210003179,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:00","end":"17:00","startHours":15.99294210003179,"endHours":16.99294210003179,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:00","end":"18:00","startHours":16.99294210003179,"endHours":17.99294210003179,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:00","end":"19:00","startHours":17.99294210003179,"endHours":18.99294210003179,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:00","end":"20:00","startHours":18.99294210003179,"endHours":19.99294210003179,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:00","end":"21:00","startHours":19.99294210003179,"endHours":20.99294210003179,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:00","end":"22:00","startHours":20.99294210003179,"endHours":21.99294210003179,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:00","end":"23:00","startHours":21.99294210003179,"endHours":22.99294210003179,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:00","end":"00:00","startHours":22.99294210003179,"endHours":23.99294210003179,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:00","end":"01:00","startHours":23.99294210003179,"endHours":24.99294210003179,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:00","end":"02:00","startHours":24.99294210003179,"endHours":25.99294210003179,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:00","end":"03:00","startHours":25.99294210003179,"endHours":26.99294210003179,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:00","end":"04:00","startHours":26.99294210003179,"endHours":27.99294210003179,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:00","end":"05:00","startHours":27.99294210003179,"endHours":28.99294210003179,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.570179232302387,"eotMinutes":-6.1146857167802535,"ayanamsa":23.5956}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"siliguri"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 30, 1981 CE · Siliguri, West Bengal · Vidhyamitra","description":"July 30, 1981 CE for Siliguri, West Bengal: Kṛṣṇa Caturdaśī, sūryodaya 05:00, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/siliguri/1981-07-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/siliguri/1981-07-30","sa":"https://sa.vidhyamitra.com/city/siliguri/1981-07-30","hi":"https://hi.vidhyamitra.com/city/siliguri/1981-07-30","x-default":"https://vidhyamitra.com/city/siliguri/1981-07-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T20:13:50.753Z","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":"2026-06-03T20:13:50.753Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T20:13:50.753Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}