{"id":"vidhyamitra:city-day:mathura:1981-02-23:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1981-02-23","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-23","date_display":"February 23, 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":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444658.770833,"kali_year":5082,"ahargana":1856193.2708,"sun":{"sidereal_longitude":310.9309,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":179.9461,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":229.0152,"elapsed_within_tithi_degrees":1.0152},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":179.9461,"elapsed_within_degrees":6.6127},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":130.8769},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2,"day":23,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444658.770833,"ahargana":1856193.2708,"kali_year":5082,"ayanamsa_lahiri":23.5896,"grahas":{"sun":{"sidereal_longitude":310.75231499999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":176.99101500000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false,"latitude":4.2281},"mars":{"sidereal_longitude":319.403015,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":299.612715,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":165.54181500000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":300.20581500000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":164.91221500000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":109.9479,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":289.9479,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"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":2,"day":23,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444658.770833,"kali_year":5082,"ahargana":1856193.2708,"sun":{"sidereal_longitude":310.9309,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":179.9461,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":229.0152,"elapsed_within_tithi_degrees":1.0152},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":179.9461,"elapsed_within_degrees":6.6127},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":130.8769},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.228,"elongation":130.985},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.228,"opposition_distance":49.015}},"eclipse_window_40days":[{"offset_days":-18,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:50","sunsetLocal":"18:16","solarNoonLocal":"12:33","dayLengthHours":11.43152945315572,"dayLengthDisplay":"11 Hours 25 Mins 54 Secs","nightLengthDisplay":"12 Hours 34 Mins 06 Secs","moonriseLocal":"21:52","moonsetLocal":"09:24","rahuKala":{"name":"Rāhu Kāla","start":"08:16","end":"09:42","startHours":8.267734737724327,"endHours":9.696675919368792,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:08","end":"12:33","startHours":11.125617101013258,"endHours":12.554558282657723,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:59","end":"15:25","startHours":13.983499464302188,"endHours":15.412440645946653,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:30","end":"09:53","startHours":9.506150428482863,"endHours":9.887201410254722,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:19","end":"07:37","startHours":7.315107283294684,"endHours":7.61994806871217,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:56","startHours":12.173507300885866,"endHours":12.93560926442958,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:19","end":"06:05","startHours":5.314589628992433,"endHours":6.0766915925361475,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:53","end":"06:50","startHours":5.886166101650218,"endHours":6.838793556079862,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:13","startHours":14.459813191517009,"endHours":15.221915155060724,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:04","end":"18:28","startHours":18.070323009235583,"endHours":18.47032300923558,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:16","end":"18:45","startHours":18.270323009235582,"endHours":18.746636736450405,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:01","end":"19:46","startHours":18.020323009235582,"endHours":19.770323009235582,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:56","startHours":24.173507300885866,"endHours":24.93560926442958,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:50","end":"08:16","startHours":6.838793556079862,"endHours":8.267734737724327,"quality":"auspicious"},{"name":"Kāla","start":"08:16","end":"09:42","startHours":8.267734737724327,"endHours":9.696675919368792,"quality":"inauspicious"},{"name":"Śubha","start":"09:42","end":"11:08","startHours":9.696675919368792,"endHours":11.125617101013258,"quality":"auspicious"},{"name":"Roga","start":"11:08","end":"12:33","startHours":11.125617101013258,"endHours":12.554558282657723,"quality":"inauspicious"},{"name":"Udveg","start":"12:33","end":"13:59","startHours":12.554558282657723,"endHours":13.983499464302188,"quality":"inauspicious"},{"name":"Chala","start":"13:59","end":"15:25","startHours":13.983499464302188,"endHours":15.412440645946653,"quality":"neutral"},{"name":"Labha","start":"15:25","end":"16:50","startHours":15.412440645946653,"endHours":16.841381827591118,"quality":"auspicious"},{"name":"Amṛta","start":"16:50","end":"18:16","startHours":16.841381827591118,"endHours":18.270323009235582,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:16","end":"19:50","startHours":18.270323009235582,"endHours":19.841381827591118,"quality":"neutral"},{"name":"Labha","start":"19:50","end":"21:25","startHours":19.841381827591118,"endHours":21.412440645946653,"quality":"auspicious"},{"name":"Amṛta","start":"21:25","end":"22:59","startHours":21.412440645946653,"endHours":22.983499464302188,"quality":"auspicious"},{"name":"Kāla","start":"22:59","end":"00:33","startHours":22.983499464302188,"endHours":24.554558282657723,"quality":"inauspicious"},{"name":"Śubha","start":"00:33","end":"02:08","startHours":24.554558282657723,"endHours":26.12561710101326,"quality":"auspicious"},{"name":"Roga","start":"02:08","end":"03:42","startHours":26.12561710101326,"endHours":27.696675919368793,"quality":"inauspicious"},{"name":"Udveg","start":"03:42","end":"05:16","startHours":27.696675919368793,"endHours":29.267734737724325,"quality":"inauspicious"},{"name":"Chala","start":"05:16","end":"06:50","startHours":29.267734737724325,"endHours":30.838793556079864,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:50","end":"07:50","startHours":6.838793556079862,"endHours":7.838793556079862,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:50","end":"08:50","startHours":7.838793556079862,"endHours":8.838793556079862,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:50","end":"09:50","startHours":8.838793556079862,"endHours":9.838793556079862,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:50","end":"10:50","startHours":9.838793556079862,"endHours":10.838793556079862,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:50","end":"11:50","startHours":10.838793556079862,"endHours":11.838793556079862,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:50","end":"12:50","startHours":11.838793556079862,"endHours":12.838793556079862,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:50","end":"13:50","startHours":12.838793556079862,"endHours":13.838793556079862,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:50","end":"14:50","startHours":13.838793556079862,"endHours":14.838793556079862,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:50","end":"15:50","startHours":14.838793556079862,"endHours":15.838793556079862,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:50","end":"16:50","startHours":15.838793556079862,"endHours":16.838793556079864,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:50","end":"17:50","startHours":16.838793556079864,"endHours":17.838793556079864,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:50","end":"18:50","startHours":17.838793556079864,"endHours":18.838793556079864,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:50","end":"19:50","startHours":18.838793556079864,"endHours":19.838793556079864,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:50","end":"20:50","startHours":19.838793556079864,"endHours":20.838793556079864,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:50","end":"21:50","startHours":20.838793556079864,"endHours":21.838793556079864,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:50","end":"22:50","startHours":21.838793556079864,"endHours":22.838793556079864,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:50","end":"23:50","startHours":22.838793556079864,"endHours":23.838793556079864,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:50","end":"00:50","startHours":23.838793556079864,"endHours":24.838793556079864,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:50","end":"01:50","startHours":24.838793556079864,"endHours":25.838793556079864,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:50","end":"02:50","startHours":25.838793556079864,"endHours":26.838793556079864,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:50","end":"03:50","startHours":26.838793556079864,"endHours":27.838793556079864,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:50","end":"04:50","startHours":27.838793556079864,"endHours":28.838793556079864,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:50","end":"05:50","startHours":28.838793556079864,"endHours":29.838793556079864,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:50","end":"06:50","startHours":29.838793556079864,"endHours":30.838793556079864,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-9.916807370965897,"eotMinutes":-13.968296959463448,"ayanamsa":23.5896}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi":"Kumbha"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 23, 1981 CE · Mathurā · Vidhyamitra","description":"February 23, 1981 CE for Mathurā: Kṛṣṇa Pañcamī, sūryodaya 06:50, sūryāsta 18:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1981-02-23","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1981-02-23","sa":"https://sa.vidhyamitra.com/city/mathura/1981-02-23","hi":"https://hi.vidhyamitra.com/city/mathura/1981-02-23","x-default":"https://vidhyamitra.com/city/mathura/1981-02-23"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:32:58.883Z","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":"2026-05-14T17:32:58.883Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:32:58.883Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}