To go "Display Options" -> "General" and make sure you have;
Default Date Format: "m/d/y | h:i A"

Available Time Formats (just ripping this from a control panel, I have no idea what is stock):
Code
d/m/y | h:i A
y/m/d | h:i A
d/m/Y | H:i
D M d Y | h:i A
m/d/y | h:i A
Y-m-d H:i:s
d-m-Y | h:i A
d F, Y | h:i A
Y-m-d | h:i A
m-d-Y | h:i A
F d, Y | h:i A
d-m-Y | H:i
d F, Y | H:i
Y-m-d | H:i
m-d-Y | H:i
F d, Y | H:i
d-m-Y | h:i A
d F, Y | h:i A
Y-m-d | h:i A
m-d-Y | h:i A
F d, Y | h:i A
d-m-Y | H:i
d F, Y | H:i
Y-m-d | H:i
m-d-Y | H:i
F d, Y | H:i
d-m-Y | h:i A
d F, Y | h:i A
Y-m-d | h:i A
m-d-Y | h:i A
F d, Y | h:i A
d-m-Y | H:i
d F, Y | H:i
Y-m-d | H:i
m-d-Y | H:i
F d, Y | H:i

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