You can open TDMS files in Microsoft Excel using the TDM Excel Add-in TDM Excel Add-In for Microsoft Excel Download
You can download it and install it and it will allow you to open the files directly in Microsoft Excel.
1. Time conversion from UTC to Excel time
For Inksight system, the first column represents the Absolute timestamp in UTC. This is the time in seconds, since 01/01/2019.
To convert this into excel time stamp format do as follow:
If the TimeAbs UTC value is equal to 59554408, then:
The value 44153.28713 are the days since 01/01/1900. The fractional part represents minutes, seconds etc.