{"id":"vidhyamitra:city-day:berlin:1981-04-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/berlin/1981-04-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-18","date_display":"April 18, 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":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444712.770833,"kali_year":5083,"ahargana":1856247.2708,"sun":{"sidereal_longitude":4.498,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":170.6426,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":166.1446,"elapsed_within_tithi_degrees":10.1446},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.6426,"elapsed_within_degrees":10.6426},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":175.1407},"karana":{"half_tithi_index":27,"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":4,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444712.770833,"ahargana":1856247.2708,"kali_year":5083,"ayanamsa_lahiri":23.5917,"grahas":{"sun":{"sidereal_longitude":4.33675199999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":170.18495200000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false,"latitude":4.0283},"mars":{"sidereal_longitude":1.1870519999999942,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":354.070152,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":159.24335199999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":7.363051999999982,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":160.98885199999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.0867,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.0867,"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":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444712.770833,"kali_year":5083,"ahargana":1856247.2708,"sun":{"sidereal_longitude":4.498,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":170.6426,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":166.1446,"elapsed_within_tithi_degrees":10.1446},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":170.6426,"elapsed_within_degrees":10.6426},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":175.1407},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.028,"elongation":166.145},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.028,"opposition_distance":13.855}},"eclipse_window_40days":[]},"city":{"slug":"berlin","name":"Berlin, Germany","lat":52.52,"lon":13.405,"tz_offset_hours":1,"country":"DE","tier":"diaspora"},"tier2":{"city":{"slug":"berlin","name":"Berlin, Germany","lat":52.52,"lon":13.405,"tz_offset_hours":1,"country":"DE","tier":"diaspora"},"sunriseLocal":"05:03","sunsetLocal":"19:09","solarNoonLocal":"12:06","dayLengthHours":14.10121687188798,"dayLengthDisplay":"14 Hours 06 Mins 04 Secs","nightLengthDisplay":"9 Hours 53 Mins 56 Secs","moonriseLocal":"17:34","moonsetLocal":"04:45","rahuKala":{"name":"Rāhu Kāla","start":"08:34","end":"10:20","startHours":8.572597733763281,"endHours":10.33524984274928,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:52","end":"15:37","startHours":13.860554060721274,"endHours":15.623206169707272,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:03","end":"06:49","startHours":5.047293515791287,"endHours":6.809945624777284,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:20","end":"08:48","startHours":8.33757745256515,"endHours":8.807618014961415,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:38","end":"06:01","startHours":5.634844218786619,"endHours":6.010876668703632,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:34","startHours":11.62786138933901,"endHours":12.567942514131541,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:10","end":"04:06","startHours":3.1671312662062228,"endHours":4.107212390998755,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:52","end":"05:03","startHours":3.872192109800622,"endHours":5.047293515791287,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:23","startHours":14.448104763716605,"endHours":15.388185888509136,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:57","end":"19:21","startHours":18.948510387679267,"endHours":19.348510387679266,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:09","end":"19:44","startHours":19.148510387679266,"endHours":19.7360610906746,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:54","end":"20:39","startHours":18.898510387679266,"endHours":20.648510387679266,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:34","startHours":23.627861389339007,"endHours":24.56794251413154,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:03","end":"06:49","startHours":5.047293515791287,"endHours":6.809945624777284,"quality":"inauspicious"},{"name":"Śubha","start":"06:49","end":"08:34","startHours":6.809945624777284,"endHours":8.572597733763281,"quality":"auspicious"},{"name":"Roga","start":"08:34","end":"10:20","startHours":8.572597733763281,"endHours":10.33524984274928,"quality":"inauspicious"},{"name":"Udveg","start":"10:20","end":"12:06","startHours":10.33524984274928,"endHours":12.097901951735277,"quality":"inauspicious"},{"name":"Chala","start":"12:06","end":"13:52","startHours":12.097901951735277,"endHours":13.860554060721274,"quality":"neutral"},{"name":"Labha","start":"13:52","end":"15:37","startHours":13.860554060721274,"endHours":15.623206169707272,"quality":"auspicious"},{"name":"Amṛta","start":"15:37","end":"17:23","startHours":15.623206169707272,"endHours":17.38585827869327,"quality":"auspicious"},{"name":"Kāla","start":"17:23","end":"19:09","startHours":17.38585827869327,"endHours":19.148510387679266,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:09","end":"20:23","startHours":19.148510387679266,"endHours":20.38585827869327,"quality":"auspicious"},{"name":"Amṛta","start":"20:23","end":"21:37","startHours":20.38585827869327,"endHours":21.62320616970727,"quality":"auspicious"},{"name":"Kāla","start":"21:37","end":"22:52","startHours":21.62320616970727,"endHours":22.860554060721274,"quality":"inauspicious"},{"name":"Śubha","start":"22:52","end":"00:06","startHours":22.860554060721274,"endHours":24.097901951735277,"quality":"auspicious"},{"name":"Roga","start":"00:06","end":"01:20","startHours":24.097901951735277,"endHours":25.335249842749278,"quality":"inauspicious"},{"name":"Udveg","start":"01:20","end":"02:34","startHours":25.335249842749278,"endHours":26.57259773376328,"quality":"inauspicious"},{"name":"Chala","start":"02:34","end":"03:49","startHours":26.57259773376328,"endHours":27.809945624777285,"quality":"neutral"},{"name":"Labha","start":"03:49","end":"05:03","startHours":27.809945624777285,"endHours":29.04729351579129,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:03","end":"06:03","startHours":5.047293515791287,"endHours":6.047293515791287,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:03","end":"07:03","startHours":6.047293515791287,"endHours":7.047293515791287,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:03","end":"08:03","startHours":7.047293515791287,"endHours":8.047293515791287,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:03","end":"09:03","startHours":8.047293515791287,"endHours":9.047293515791287,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:03","end":"10:03","startHours":9.047293515791287,"endHours":10.047293515791287,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:03","end":"11:03","startHours":10.047293515791287,"endHours":11.047293515791287,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:03","end":"12:03","startHours":11.047293515791287,"endHours":12.047293515791287,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:03","end":"13:03","startHours":12.047293515791287,"endHours":13.047293515791287,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:03","end":"14:03","startHours":13.047293515791287,"endHours":14.047293515791287,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:03","end":"15:03","startHours":14.047293515791287,"endHours":15.047293515791287,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:03","end":"16:03","startHours":15.047293515791287,"endHours":16.04729351579129,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:03","end":"17:03","startHours":16.04729351579129,"endHours":17.04729351579129,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:03","end":"18:03","startHours":17.04729351579129,"endHours":18.04729351579129,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:03","end":"19:03","startHours":18.04729351579129,"endHours":19.04729351579129,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:03","end":"20:03","startHours":19.04729351579129,"endHours":20.04729351579129,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:03","end":"21:03","startHours":20.04729351579129,"endHours":21.04729351579129,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:03","end":"22:03","startHours":21.04729351579129,"endHours":22.04729351579129,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:03","end":"23:03","startHours":22.04729351579129,"endHours":23.04729351579129,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:03","end":"00:03","startHours":23.04729351579129,"endHours":24.04729351579129,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:03","end":"01:03","startHours":24.04729351579129,"endHours":25.04729351579129,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:03","end":"02:03","startHours":25.04729351579129,"endHours":26.04729351579129,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:03","end":"03:03","startHours":26.04729351579129,"endHours":27.04729351579129,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:03","end":"04:03","startHours":27.04729351579129,"endHours":28.04729351579129,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:03","end":"05:03","startHours":28.04729351579129,"endHours":29.04729351579129,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.736083426606916,"eotMinutes":0.5058828958834352,"ayanamsa":23.5917}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[]},"validity":{"eternal":false,"location_specific":"berlin"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 18, 1981 CE · Berlin, Germany · Vidhyamitra","description":"April 18, 1981 CE for Berlin, Germany: Śukla Caturdaśī, sūryodaya 05:03, sūryāsta 19:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/berlin/1981-04-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/berlin/1981-04-18","sa":"https://sa.vidhyamitra.com/city/berlin/1981-04-18","hi":"https://hi.vidhyamitra.com/city/berlin/1981-04-18","x-default":"https://vidhyamitra.com/city/berlin/1981-04-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T21:34:47.488Z","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":"2026-05-31T21:34:47.488Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T21:34:47.488Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}