1º_ 'QTR' is one of the so-called "Q codes" that are used internationally as an abbreviated query in telegraph and later radio communications. It is interpreted as "What is the exact time?" and is also used as an answer before expressing the time in military format. 2º_ In a chat it is used to abbreviate phrases like "that you recontra". 3º_ QTR is the IATA code for Quintero Air Base in the Quintero Commune (Valparaíso Region, Chile).
