Docs / Date & time
FormatDate is an AMPscript function in the date & time category.
FormatDate(date, datePattern, [timePattern], [culture])
%%=FormatDate("2026-08-13", "MM/dd/yyyy")=%%
08/13/2026
Output produced by AmpSend's AMPscript engine (validated against Salesforce's own test corpus) - not a hand-written result.
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FormatDate in the official AMPscript reference - or browse the official index of AMPscript functions for platform behavior and edge cases.