Normally, at 03:00 UTC each Sunday the Stack Exchange Data Explorer is being refreshed with the weekly full backup from all sites.
I have this query to check on the status of the refresh as it takes 6 to 8 hours to complete. The current output at 10:50 UTC is
which makes me believe the job didn't start at all.
This is similar to SEDE refresh didn't happen this Sunday.
I know an e-mail will be sent to the SRE mailbox in case the job fails but I'm not sure if an e-mail is sent if the job doesn't start at all.
Can you look into what caused the failure to start and while you're at it, start the job manually for us?