You are doing nothing wrong. Check the "alignment" documentation for intnx. http://support.sas.com/documentation/cdl/en/lefunctionsref/63354/HTML/default/viewer.htm#p10v3sa3i4kfxfn1sovhi5xzxh8n.htm The "old fashioned" way to subtract one day from a datetime variable is to simply subtract 1 day's worth of seconds. newdt = olddt - 24*60*60; Doc Muhlbaier Duke
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