I don't know if anyone else does this, but I put the race events into my calendar so I can see them on my phone etc. If this is useful to you, and you trust my data entry skills, you should be able to subscribe to my F1 calendar with this enormous URL:
[url]webcal://p04-calendarws.icloud.com/ca/subscribe/1/5ZXV6O0AjO_I7B748GUe6IQdUdQFbjsSNWhybNO8LbI_2UEc1KvaU9r9QfRJUnFMMgFGZnSGCDtl7wClNzSeXFxzqdBVmZyj1oWCMRM8zBw[/url]
At the moment there are no official session times; I intend to add them as they appear. I also usually put in the pre-season testing days and car launches; I haven't got around to that yet.