Enter a DateStamp with the STARTING date and time of the flow

[NiccoloPardelli]

Hi everyone!
I am currently working on a flow (attached you can find a picture of it) and I would like to save various outputs with a datestamp on the file name.
I know that it is possible to insert today's date and time (HH-MM-SS) in the file name using a formula and changing the path of the file but, this would not be possible this time as the outputs are generated with some seconds of discrepancy. 

I was wondering whether is possible to insert in the file name the STARTING date and time of the workflow (the moment I click "run") that would be unique for all the outputs created.

Thank you for your help!

[BenMoss · Accepted solution]

Just insert the formula after your join tool off datetimenow() before you split the data out into different streams...

Ben