{"id":"vidhyamitra:city-day:thane:2021-07-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2021-07-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-07-18","date_display":"July 18, 2021 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":2021,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459413.770833,"kali_year":5123,"ahargana":1870948.2708,"sun":{"sidereal_longitude":91.0086,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":191.2446,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":100.236,"elapsed_within_tithi_degrees":4.236},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.2446,"elapsed_within_degrees":4.5779},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.2532},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2021,"month":7,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459413.770833,"ahargana":1870948.2708,"kali_year":5123,"ayanamsa_lahiri":24.154,"grahas":{"sun":{"sidereal_longitude":91.509165,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"moon":{"sidereal_longitude":189.62416499999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":2.7009},"mars":{"sidereal_longitude":118.13626499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":75.50646499999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":306.818765,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":120.756865,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":287.16366500000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":48.157,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":228.157,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":2021,"month":7,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459413.770833,"kali_year":5123,"ahargana":1870948.2708,"sun":{"sidereal_longitude":91.0086,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":191.2446,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":9,"name":"Navamī","paksha":"Śukla","full_name":"Śukla Navamī","elongation_degrees":100.236,"elapsed_within_tithi_degrees":4.236},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.2446,"elapsed_within_degrees":4.5779},"yoga":{"number":22,"name":"Sādhya","sum_longitude":282.2532},"karana":{"half_tithi_index":16,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.701,"elongation":100.236},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.701,"opposition_distance":79.764}},"eclipse_window_40days":[]},"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"06:09","sunsetLocal":"19:19","solarNoonLocal":"12:44","dayLengthHours":13.15304866823557,"dayLengthDisplay":"13 Hours 09 Mins 11 Secs","nightLengthDisplay":"10 Hours 50 Mins 49 Secs","moonriseLocal":"13:32","moonsetLocal":"01:01","rahuKala":{"name":"Rāhu Kāla","start":"17:40","end":"19:19","startHours":17.664785185930153,"endHours":19.3089162694596,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:44","end":"14:23","startHours":12.732391935341816,"endHours":14.37652301887126,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"16:01","end":"17:40","startHours":16.02065410240071,"endHours":17.664785185930153,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:40","startHours":9.224912290478997,"endHours":9.663347246086849,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:42","end":"07:03","startHours":6.703911295733846,"endHours":7.054659260220128,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:18","end":"13:10","startHours":12.293956979733965,"endHours":13.170826890949668,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:24","end":"05:17","startHours":4.402127778792621,"endHours":5.2789976900083255,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:04","end":"06:09","startHours":5.0597802122044,"endHours":6.15586760122403,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:55","end":"15:48","startHours":14.924566713381076,"endHours":15.80143662459678,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:07","end":"19:31","startHours":19.108916269459602,"endHours":19.5089162694596,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:19","end":"19:51","startHours":19.3089162694596,"endHours":19.856959963969416,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:04","end":"20:49","startHours":19.0589162694596,"endHours":20.8089162694596,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:18","end":"01:10","startHours":24.293956979733963,"endHours":25.17082689094967,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:09","end":"07:48","startHours":6.15586760122403,"endHours":7.799998684753477,"quality":"inauspicious"},{"name":"Chala","start":"07:48","end":"09:27","startHours":7.799998684753477,"endHours":9.444129768282924,"quality":"neutral"},{"name":"Labha","start":"09:27","end":"11:05","startHours":9.444129768282924,"endHours":11.088260851812368,"quality":"auspicious"},{"name":"Amṛta","start":"11:05","end":"12:44","startHours":11.088260851812368,"endHours":12.732391935341816,"quality":"auspicious"},{"name":"Kāla","start":"12:44","end":"14:23","startHours":12.732391935341816,"endHours":14.37652301887126,"quality":"inauspicious"},{"name":"Śubha","start":"14:23","end":"16:01","startHours":14.37652301887126,"endHours":16.02065410240071,"quality":"auspicious"},{"name":"Roga","start":"16:01","end":"17:40","startHours":16.02065410240071,"endHours":17.664785185930153,"quality":"inauspicious"},{"name":"Udveg","start":"17:40","end":"19:19","startHours":17.664785185930153,"endHours":19.3089162694596,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:19","end":"20:40","startHours":19.3089162694596,"endHours":20.664785185930157,"quality":"auspicious"},{"name":"Roga","start":"20:40","end":"22:01","startHours":20.664785185930157,"endHours":22.02065410240071,"quality":"inauspicious"},{"name":"Udveg","start":"22:01","end":"23:23","startHours":22.02065410240071,"endHours":23.37652301887126,"quality":"inauspicious"},{"name":"Chala","start":"23:23","end":"00:44","startHours":23.37652301887126,"endHours":24.732391935341816,"quality":"neutral"},{"name":"Labha","start":"00:44","end":"02:05","startHours":24.732391935341816,"endHours":26.08826085181237,"quality":"auspicious"},{"name":"Amṛta","start":"02:05","end":"03:27","startHours":26.08826085181237,"endHours":27.444129768282924,"quality":"auspicious"},{"name":"Kāla","start":"03:27","end":"04:48","startHours":27.444129768282924,"endHours":28.799998684753476,"quality":"inauspicious"},{"name":"Śubha","start":"04:48","end":"06:09","startHours":28.799998684753476,"endHours":30.15586760122403,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:09","end":"07:09","startHours":6.15586760122403,"endHours":7.15586760122403,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:09","end":"08:09","startHours":7.15586760122403,"endHours":8.155867601224031,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:09","end":"09:09","startHours":8.155867601224031,"endHours":9.155867601224031,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:09","end":"10:09","startHours":9.155867601224031,"endHours":10.155867601224031,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:09","end":"11:09","startHours":10.155867601224031,"endHours":11.155867601224031,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:09","end":"12:09","startHours":11.155867601224031,"endHours":12.155867601224031,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:09","end":"13:09","startHours":12.155867601224031,"endHours":13.155867601224031,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:09","end":"14:09","startHours":13.155867601224031,"endHours":14.155867601224031,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:09","end":"15:09","startHours":14.155867601224031,"endHours":15.155867601224031,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:09","end":"16:09","startHours":15.155867601224031,"endHours":16.15586760122403,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:09","end":"17:09","startHours":16.15586760122403,"endHours":17.15586760122403,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:09","end":"18:09","startHours":17.15586760122403,"endHours":18.15586760122403,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:09","end":"19:09","startHours":18.15586760122403,"endHours":19.15586760122403,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:09","end":"20:09","startHours":19.15586760122403,"endHours":20.15586760122403,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:09","end":"21:09","startHours":20.15586760122403,"endHours":21.15586760122403,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:09","end":"22:09","startHours":21.15586760122403,"endHours":22.15586760122403,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:09","end":"23:09","startHours":22.15586760122403,"endHours":23.15586760122403,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:09","end":"00:09","startHours":23.15586760122403,"endHours":24.15586760122403,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:09","end":"01:09","startHours":24.15586760122403,"endHours":25.15586760122403,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:09","end":"02:09","startHours":25.15586760122403,"endHours":26.15586760122403,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:09","end":"03:09","startHours":26.15586760122403,"endHours":27.15586760122403,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:09","end":"04:09","startHours":27.15586760122403,"endHours":28.15586760122403,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:09","end":"05:09","startHours":28.15586760122403,"endHours":29.15586760122403,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:09","end":"06:09","startHours":29.15586760122403,"endHours":30.15586760122403,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.00800583422442,"eotMinutes":-5.85591612050904,"ayanamsa":24.154}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Navamī · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 Śukla Navamī","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 18, 2021 CE · Thane, Maharashtra · Vidhyamitra","description":"July 18, 2021 CE for Thane, Maharashtra: Śukla Navamī, sūryodaya 06:09, sūryāsta 19:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2021-07-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2021-07-18","sa":"https://sa.vidhyamitra.com/city/thane/2021-07-18","hi":"https://hi.vidhyamitra.com/city/thane/2021-07-18","x-default":"https://vidhyamitra.com/city/thane/2021-07-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T07:15:50.472Z","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":"2026-05-15T07:15:50.472Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T07:15:50.472Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}