Apologies for the vague subject line; I couldn't think of a better one that
would fit. I'm referring to the forecast maps:

http://www.metoffice.gov.uk/weather/...t_weather.html

Up until very recently, the times shown for the maps for first two days
would be at three-hour intervals: 0000, 0300, 0600 etc. A few days ago,
they changed - still at three-hour intervals, but now 0100, 0400, 0700 etc.
Why? My only thought is that it was to avoid using 0000 at all, but in that
case why was it left for so long without changing?

--
Bewdley, Worcs. ~90m asl.