{"id":"vidhyamitra:city-day:noida:1981-10-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/noida/1981-10-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-31","date_display":"October 31, 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":10,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444908.770833,"kali_year":5083,"ahargana":1856443.2708,"sun":{"sidereal_longitude":193.291,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":231.5353,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.2443,"elapsed_within_tithi_degrees":2.2443},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":231.5353,"elapsed_within_degrees":4.8686},"yoga":{"number":5,"name":"Śobhana","sum_longitude":64.8263},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1981,"month":10,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444908.770833,"ahargana":1856443.2708,"kali_year":5083,"ayanamsa_lahiri":23.5992,"grahas":{"sun":{"sidereal_longitude":193.93446300000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":228.88186299999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":3.1896},"mars":{"sidereal_longitude":132.407263,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":176.10806300000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":181.17476299999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":240.957763,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":171.935163,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":96.7017,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":276.7017,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":10,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444908.770833,"kali_year":5083,"ahargana":1856443.2708,"sun":{"sidereal_longitude":193.291,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":231.5353,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.2443,"elapsed_within_tithi_degrees":2.2443},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":231.5353,"elapsed_within_degrees":4.8686},"yoga":{"number":5,"name":"Śobhana","sum_longitude":64.8263},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.19,"elongation":38.244},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.19,"opposition_distance":141.756}},"eclipse_window_40days":[]},"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"noida","name":"Noida, Uttar Pradesh","lat":28.5355,"lon":77.391,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tier-1"},"sunriseLocal":"06:31","sunsetLocal":"17:37","solarNoonLocal":"12:04","dayLengthHours":11.09068442792898,"dayLengthDisplay":"11 Hours 05 Mins 26 Secs","nightLengthDisplay":"12 Hours 54 Mins 34 Secs","moonriseLocal":"09:12","moonsetLocal":"19:35","rahuKala":{"name":"Rāhu Kāla","start":"09:18","end":"10:41","startHours":9.293715900508952,"endHours":10.680051454000075,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:27","end":"14:50","startHours":13.45272256098232,"endHours":14.839058114473442,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:31","end":"07:54","startHours":6.521044793526706,"endHours":7.907380347017829,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:29","startHours":9.108871160043469,"endHours":9.478560640974434,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:59","end":"07:17","startHours":6.983156644690414,"endHours":7.278908229435187,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:26","startHours":11.69669752656023,"endHours":12.436076488422161,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:03","end":"05:47","startHours":5.042286869802842,"endHours":5.781665831664775,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:36","end":"06:31","startHours":5.596821091199291,"endHours":6.521044793526706,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:39","startHours":13.914834412146028,"endHours":14.654213374007961,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:25","end":"17:49","startHours":17.411729221455687,"endHours":17.811729221455685,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:37","end":"18:04","startHours":17.611729221455686,"endHours":18.073841072619395,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:22","end":"19:07","startHours":17.361729221455686,"endHours":19.111729221455686,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:26","startHours":23.69669752656023,"endHours":24.43607648842216,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:31","end":"07:54","startHours":6.521044793526706,"endHours":7.907380347017829,"quality":"inauspicious"},{"name":"Śubha","start":"07:54","end":"09:18","startHours":7.907380347017829,"endHours":9.293715900508952,"quality":"auspicious"},{"name":"Roga","start":"09:18","end":"10:41","startHours":9.293715900508952,"endHours":10.680051454000075,"quality":"inauspicious"},{"name":"Udveg","start":"10:41","end":"12:04","startHours":10.680051454000075,"endHours":12.066387007491198,"quality":"inauspicious"},{"name":"Chala","start":"12:04","end":"13:27","startHours":12.066387007491198,"endHours":13.45272256098232,"quality":"neutral"},{"name":"Labha","start":"13:27","end":"14:50","startHours":13.45272256098232,"endHours":14.839058114473442,"quality":"auspicious"},{"name":"Amṛta","start":"14:50","end":"16:14","startHours":14.839058114473442,"endHours":16.225393667964564,"quality":"auspicious"},{"name":"Kāla","start":"16:14","end":"17:37","startHours":16.225393667964564,"endHours":17.611729221455686,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:37","end":"19:14","startHours":17.611729221455686,"endHours":19.225393667964564,"quality":"auspicious"},{"name":"Amṛta","start":"19:14","end":"20:50","startHours":19.225393667964564,"endHours":20.839058114473442,"quality":"auspicious"},{"name":"Kāla","start":"20:50","end":"22:27","startHours":20.839058114473442,"endHours":22.452722560982316,"quality":"inauspicious"},{"name":"Śubha","start":"22:27","end":"00:04","startHours":22.452722560982316,"endHours":24.066387007491194,"quality":"auspicious"},{"name":"Roga","start":"00:04","end":"01:41","startHours":24.066387007491194,"endHours":25.680051454000072,"quality":"inauspicious"},{"name":"Udveg","start":"01:41","end":"03:18","startHours":25.680051454000072,"endHours":27.29371590050895,"quality":"inauspicious"},{"name":"Chala","start":"03:18","end":"04:54","startHours":27.29371590050895,"endHours":28.907380347017828,"quality":"neutral"},{"name":"Labha","start":"04:54","end":"06:31","startHours":28.907380347017828,"endHours":30.521044793526706,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:31","end":"07:31","startHours":6.521044793526706,"endHours":7.521044793526706,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:31","end":"08:31","startHours":7.521044793526706,"endHours":8.521044793526706,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:31","end":"09:31","startHours":8.521044793526706,"endHours":9.521044793526706,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:31","end":"10:31","startHours":9.521044793526706,"endHours":10.521044793526706,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:31","end":"11:31","startHours":10.521044793526706,"endHours":11.521044793526706,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:31","end":"12:31","startHours":11.521044793526706,"endHours":12.521044793526706,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:31","end":"13:31","startHours":12.521044793526706,"endHours":13.521044793526706,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:31","end":"14:31","startHours":13.521044793526706,"endHours":14.521044793526706,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:31","end":"15:31","startHours":14.521044793526706,"endHours":15.521044793526706,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:31","end":"16:31","startHours":15.521044793526706,"endHours":16.521044793526706,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:31","end":"17:31","startHours":16.521044793526706,"endHours":17.521044793526706,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:31","end":"18:31","startHours":17.521044793526706,"endHours":18.521044793526706,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:31","end":"19:31","startHours":18.521044793526706,"endHours":19.521044793526706,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:31","end":"20:31","startHours":19.521044793526706,"endHours":20.521044793526706,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:31","end":"21:31","startHours":20.521044793526706,"endHours":21.521044793526706,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:31","end":"22:31","startHours":21.521044793526706,"endHours":22.521044793526706,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:31","end":"23:31","startHours":22.521044793526706,"endHours":23.521044793526706,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:31","end":"00:31","startHours":23.521044793526706,"endHours":24.521044793526706,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:31","end":"01:31","startHours":24.521044793526706,"endHours":25.521044793526706,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:31","end":"02:31","startHours":25.521044793526706,"endHours":26.521044793526706,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:31","end":"03:31","startHours":26.521044793526706,"endHours":27.521044793526706,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:31","end":"04:31","startHours":27.521044793526706,"endHours":28.521044793526706,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:31","end":"05:31","startHours":28.521044793526706,"endHours":29.521044793526706,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:31","end":"06:31","startHours":29.521044793526706,"endHours":30.521044793526706,"planetary_lord":"Mercury"}],"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":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.022890896247462,"eotMinutes":16.45277955052819,"ayanamsa":23.5992}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Caturthī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"noida"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 31, 1981 CE · Noida, Uttar Pradesh · Vidhyamitra","description":"October 31, 1981 CE for Noida, Uttar Pradesh: Śukla Caturthī, sūryodaya 06:31, sūryāsta 17:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/noida/1981-10-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/noida/1981-10-31","sa":"https://sa.vidhyamitra.com/city/noida/1981-10-31","hi":"https://hi.vidhyamitra.com/city/noida/1981-10-31","x-default":"https://vidhyamitra.com/city/noida/1981-10-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:35:23.132Z","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":"2026-05-30T23:35:23.132Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:35:23.132Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}