If an Excel workbook has more than one sheet with content, Statable asks which one when opening (with name and number of rows). With one sheet it opens right away. The other sheets are not read.
A date with time ("2026-01-31 14:05", "31.01.2026 14:05:30") keeps the time. A time alone ("14:30", "14:30:15") is recognised as a time (like TIME in SPSS: seconds since midnight). It is never converted to another time zone.