Yes it is repeatable but after a bit more testing I have found it happens for any station as follows:
1. Set a Run Once on any single station to turn on for say 1 minute.
2. Set another run once to turn on a different single station for 1 minute before the station from step 1 has completed.
This sequence will turn off the first station before its run once has completed and its log entry will show with the 1970-01-01 zero date. If the run once is allowed to complete normally then the log entry will have the correct date.
The other problem I reported regarding the station status indicators on the home page is a browser issue. From Windows 7 they display as I expected using Firefox or Chrome but not with IE11.
Regards Keith Fisk