It's literally not strange. It's about Lent. That's what Christians do during Lent and it's widely regarded as a very serious time frame for Christians (not all, of course). Lent just started yesterday. Generally, government agencies tweet about upcoming/current holidays, This is no different than any other holiday post.
To add, the Q post is completely irrelevant.

True Q decodes are awesome, there is no need to attribute every single post you see to a Q post. That waters it down.