Summary of mid‐eclipse times for LMC X‐4. The asterisks represent the SAS 3 data (Kelley et al. 1983), the dots are derived from optical observations (Dennerl 1989), the squares are EXOSAT data (Dennerl et al. 1992), the circles are Ginga points (J. Woo, private communication; Levine et al. 1991), and the triangle is the ROSAT data point (present work). The solid curve represents the best fit to a quadratic function, with the effects of a constant orbital period of 1﹩\fd﹩4084058 removed.