Keywords: period (time)
Sign Definition
As a Noun
                                            1.  A defined or particular length of time. English = period.
                                          
                                          
                                        As Modifier
                                            1.  Used immediately next to two signs specifying points in time (times, days, months, years, dates) to mean between these two times. English = from X, to Y; between X and Y.
                                          
                                          
                                         
                  
                      