Returns the current date/time in the specified format.
STRFTIME supports all of the same formats as the underlying C function strftime(3). It also supports the following format:
%[n]q - fractions of a second, with leading zeros.
%3q will give milliseconds and
%1q will give tenths of a second. The default is set at milliseconds (n=3). The common case is to use it in combination with %S, as in
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