How do I write data to a new file every 24 hours?

[soleater]

I have a VI set up to collect thermocouple data and write the data to a file. How would I configure LabView if I wanted the file writing to write to a new file at the start of each new day (at midnight)?

[Dennis_Knutson]

One easy way is to base the file name on the current date. The Get Date/Time String function output can be formatted how you want (i.e. replace "/" with "_") and then use the Build Path to create complete path. If this iw wire to the file write function, You'll automatically create a new file when the date changes.

[Dr._Imad]

simply monitor the time at the start of the experiment and the current time,
find the difference, to get the elapsed time

See attached vi
it can be modified to save data at a specific time

[soleater]

I tried using the build file path but it keeps asking me to choose a file to write instead of writing to the file I specified with the build file path.