Variable: org-time-stamp-custom-formats
org-time-stamp-custom-formats is an alias and customizable for
org-timestamp-custom-formats, defined in org.el.gz.
Value
("%m/%d/%y %a" . "%m/%d/%y %a %H:%M")
Documentation
Custom formats for time stamps.
See format-time-string for the syntax.
These are overlaid over the default ISO format if the variable
org-display-custom-times is set. Time like %H:%M should be at the
end of the second format. The custom formats are also honored by export
commands, if custom time display is turned on at the time of export.
This variable also affects how timestamps are exported.
Leading "<" and trailing ">" pair will be stripped from the format strings.