OK, good so far,
BTW, I was thinking whilst walking to the meet. Time of death will be certified as the time of discovery. i.e. Mez may go to bed at 9 (Yeh, right!) and little Bert may croak at 10 or it could be 1am. we wouldn't know exactly what day he died. So it is time(day) of discovery that counts.
Ian, PS, I'm down for 21st April and 29th May
The spreadsheet will be posted later today.