It's not until next April 1st, but the planning is starting next week, with a meeting organised by the Chamber of Commerce.
On April 1st, 1977, Richard Booth declared himself King of an Independent Kingdom of Hay, with its own navy (a rowing boat on the Wye) and I think its own airforce, too (a fly past by a local light aircraft). Passports, and peerages, are still available from The King of Hay shop on Castle Street.
So the Chamber of Commerce are holding an open meeting on Thursday 15th September at the Bean Box cafe on the banks of the River Wye, at 6pm. (but only if it's a fine evening - the venue may change!).
The purpose of the meeting is not for the Chamber of Commerce to organise everything - it's so they can co-ordinate all the ideas for the celebration, so ideas are not duplicated.
The King is being kept informed.
The next Chamber of Commerce meeting will be on Wednesday 7th September at Tomatitos, at 6pm.