Hello, I have a column labeled "task time". In my spreadsheet, I have
a requirement to track how long a job's tasks take and come up with a
total elapsed time for all the work.

So if I have a manufacturing process which takes 61 seconds to set up
and it runs for 8 seconds, On row 1, I want to enter 00:01:01. On row
two I want to enter 00:00:08. and so on and so on until I get to the
end of the rows and total that column.

The problem is whenever I enter 00:01:01, 00:00:08, etc., then a date
gets appended to my entry!!! I even tired to apply a custom mask, like
hh:mm:ss or mm:ss, to the cell's format and the date still gets placed
in my cell!

How can I prevent this from happening? How can I have a time type and
not have a date to go along with it?

Thanks!