Hi Yoshie,
Thanks for posting in the community.
According to your description, we have tested the flow on our side and we can reproduce the same situation as yours. The time should be the Greenwich Mean Time. Since we lack of the experience and resource about using flow, we would like to invite the issue in Microsoft Power Automate Community where the support moderator and experts will help you to figure out the issue.
As a workaround, you may enable editing the Excel file, and then add two columns for displaying local time. Use the formula =B3+TIME(7,0,0) to change time to your local time.
Note: Your may modify the formula to display the correct local time. Here I use +TIME(7,0,0) as the screenshots show the time is seven hours earlier.
Appreciate your understanding.
Regards,
George