I feel a little confused when people send me greetings of 'Happy Easter' on Good Friday. First, it is not Easter - quite the reverse in the technical sense - and second it is not a day, if you are religious, to be happy and of course quite irrelevant if you are not.
On Easter Day I used to collect eggs from the local farmer who would boom 'The Lord is Risen, Timothy' to which I had to reply 'He is risen indeed, Stuart', before he handed them over.
He still wanted money for them, though.
Thanks, though for best wishes received. Altrettanto, as we say here.