EF Core 迁移时间戳有错误的时间（区域）

Question

I have an EF Core Code First Project and use EF Core 3.1.0-preview2.19525.5. When I create a new migration with Add-Migration , the timestamp is one hour in the past.

Example 20191110 1739 16_MickeyMouse.cs is a migration I created today at 18:39

My machine an English Windows 10 device based in Germany and the timezone is configured to UTC+1 (Amsterdam, Berlin, ...)

Not that this a problem at all, but I am just wondering. Where does the timestamp come from? I would expect just the developer's local time.

Answer 1

Not sure, but sounds like the timestamp in the migration class name is the UTC datetime.

You can verify this by changing your pc's timezone to UTC+2 and create a new migration. I expect the timestamp to be 2 hours ahead of that timezone.

Answer 2

The timestamp isn't in UTC is it? That would make sense as it would enable developers in different geographical locations to work on a project without migrations being done in the wrong order because one was done, for example, four hours after a previous migration but in a timezone that would stamp the file as ahead of the previous migration.