KITFORMA · EDITORIAL GUIDE
Why does a date-only API field display yesterday in an American time zone?
KitForma editorial guide. The standard YYYY-MM-DD form parses as UTC; local formatting can move it to the previous calendar day.
Step-by-step guidance
The standard YYYY-MM-DD form parses as UTC; local formatting can move it to the previous calendar day. Preserve calendar fields for date-only data instead of turning it into an instant. Verify both negative and positive UTC offsets. Use validated components when constructing a local date.
Sources and verification
Sources checked:
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