Question: Are the magazines El Centinela and Hour Detroit both published monthly?
Context: Water Forest Press is an independent book publisher located in rural Pennsylvania.  Water Forest Press was created by Victoria Valentine, as an imprint of Skyline Publications.  Skyline Publications produced print magazines that were retired in 2004.  Water Forest Press replaced Skyline Magazines with Skyline Review, Literary House Review & Hudson View Poetry Digest books.  Skyline Publications published monthly literary magazines that were distributed nationwide in stores, libraries, universities and homes, with a readership of approximately 10,000 per issue.  "A Tribute To America" issue (dedicated to 9/11) was reprinted three times.  All proceeds from the Tribute Issue were donated to local fire houses to purchase needed equipment. COINage, a monthly American special-interest magazine, targets numismatists and coin investors.  Behn-Miller Publications, Inc. - under the joint ownership of Gordon Behn and "COINage" editorial director James L. Miller - originally published the magazine on a quarterly basis.  In 1965 the magazine moved to a bimonthly publishing schedule, and has been published monthly since 1966.  Behn retired in 1982, making Miller the sole publisher of "COINage", as well as sole owner of the renamed Miller Magazines, Inc.  Trimbach Media, Inc. purchased "COINage", in 2012. L'Unité pour le socialisme is the main organ of the Socialist Party in Senegal.  The magazine is published monthly since 1984.  Its headquarters is in Dakar.  It is the successor of "L'Unité africaine" which had been published monthly between 1958 and 1984. Sylph (シルフ , Shirufu ) is a Japanese shōjo manga magazine published by ASCII Media Works (formerly MediaWorks) and is sold monthly.  The magazine was originally published on December 9, 2006 as a special edition version of MediaWorks' now-defunct "Dengeki Comic Gao! " under the title "Comic Sylph" (コミックシルフ , Komikku Shirufu , normally written as "comic SYLPH") as a quarterly publication.  On March 21, 2008, with the release of the sixth volume, the magazine was transferred over as a special edition version of ASCII Media Works' shōnen manga magazine "Dengeki Daioh".  On May 22, 2008, the magazine became independent of "Dengeki Daioh" and was published as volume one of "Sylph" as the July 2008 issue as a bimonthly publication.  On May 22, 2010, the magazine started to be published monthly.  "Sylph" is one of the few magazines originally published by MediaWorks not under the "Dengeki" naming line, such as with "Dengeki Daioh", and "Dengeki G's Magazine", the first of which being "Active Japan" in 1995 which has been discontinued since 1998. Global Sources Magazines are a series of trade magazines designed for businesses importing from China and Asia.  There are 19 specialized industry-specific titles published by the business-to-business media company Global Sources (NASDAQ-GS: GSOL).  All except two titles are published monthly. Brides is an American bimonthly magazine published by Condé Nast, who purchased the title in 1959.  As with many similar bridal magazines, it is designed to be an in-depth resource for brides-to-be, with many photographs and articles on wedding dresses, cakes, ceremonies, receptions, and honeymoons.  It was the sister publication of "Modern Bride" and "Elegant Bride" magazines, until the demise of those titles in October 2009.  Then, the frequency of "Brides" changed to monthly.  The magazine was published monthly until 2013 when the frequency was switched to bimonthly. Mount Signal is a mountain 20 km west of Mexicali, Baja California, Mexico, on Mexican Federal Highway 2.  The peak is also known as "Weeishpa" by the native community Kumiai or "Cerro del Centinela" or simply: El Centinela (the sentinel) by the mexicans.  The northern slope of the mountain begins at the international border between Mexico and the United States, the south side is bordered by Federal Highway 2.  It has an elevation of about 781 meter and is the northernmost peak of the Cocopah mountain range or "sierra cucapá". El Centinela is a Christian Seventh-day Adventist magazine published monthly in Spanish by the Pacific Press publishing house.  "El Centinela" is one of the oldest Christian magazines in Spanish. Mudgie's Deli is a restaurant in Detroit, Michigan.  It was nominated for "Best Deli" and "Best Soup" two years in a row by WDIV-TV through their "Click On Detroit" website, and won "Best Deli in Wayne County" in the Metro Times "Best of Detroit" in 2010, 2011, 2012, 2013 and 2014, and "Best Sandwich in Wayne County" in 2015.  Mudgie's was awarded "Best Sandwich" by Hour Detroit Magazine in 2012. Hour Detroit is a monthly city magazine covering the Metro Detroit area.  The magazine uses a glossy oversized format and features content on restaurants, arts and entertainment, and trends in fashion and décor.  It began publication in 1996 and is a member of the City and Regional Magazine Association (CRMA).  In addition to the print edition, it has a subscription service available for the iPad.
Answer: yes