I have to be cautious about date formats.
One of my roles at work is acting as an Invitation to Bid submitter/collector/purchase order preparer. While I understand and can interpret the differences between metric and American measures, date formats can be confusing. Sometimes it's really important to compare ship dates. Sometimes it's unclear whether a ship date of 08/07/17 means July 08 2017 or August 07 2017. One of my roles at work is purchaser/purchase order preparer/receiver so I sometimes need to call or email the vendor and confirm the ship date.