I heard the other day that the Russians showed up late for the 1908 Olympics because nobody in the Russian bureaucracy noticed that Russia was still using the Julian calendar while the rest of the world (I should say the Western world, not to be Eurocentric) had moved on. I don't know if anybody from the Muslim world or the farther reaches of Asia had such problems.
Cultural differences in notation is just one of the things you learn to take into account. I always select a date format that will spell out the month name to avoid the possibility that my British brethren might misinterpret my well-meaning but ambiguous string of numbers by picking the wrong one to represent the month and reverse it with the number that represents the day. (Fortunately, once you get past the 12th day, the problem resolves itself by proposing an impossible 13th month.) I suspect that most computers have this American date bias when interpreting dates. If that is so, it may come as a rude surprise when your machine starts printing out dates you swear you never entered. In an ideal world, the options would include some kind of side key to indicate whether the computer is showing British or American notation, but I've not seen such a thing yet. Maybe it would be available if more of us knew it was an issue. I wouldn't want to bet money that the average computer programmer knows this any better than Redpunk did when he wrote his notes. Unless, of course, he's from India or Pakistan, in which case there might be some hope...
In any event, Redpunk and I agree that the most probable intended date is the Feb. 12 one. I would be surprised if American influence in Vocalion was so strong in 1928 that it warped the notation on what was a locally made and marketed product.
The Notes section is in my view for highlighting info on the disc and other factual info, whereas the comments section is for discussion. To be honest as someone from the UK I was not aware at the time I wrote the Notes there was another interpretation of the date.
Something else I've learnt from 45Worlds but getting back to this 78 as the disc is UK as well as the service being held is in a London church which still holds services then the UK version of the date is the most likely.
The Broadcast discography on Mike Thomas' mgthomas.oc.uk website interprets the date as shown on the illustrated label (12.2.28) as February 12, 1928. In this respect, Mike Thomas is doing what most British people would do, whereas most Americans would probably interpret the date as December 2, 1928. Whoever wrote the Notes part of this entry may have opted to copy the date from the label without taking a position or even identifying the possible positions.Since the record is a British product, I think Mike Thomas is probably correct. Unless you have access to the Vocalion files, however, I don't know that you can ever be 100% sure which is the right date.