Just got round to looking at some facts for 2020 in the Handbook and was planning lunar observations for the start of the year. I checked the phases of the Moon on page 27 and then had a look at the Virtual Moon Atlas app and found that the phases did not coincide. I then looked at the phases as given in the 2019 handbook and find that this data is exactly the same as that which is given in the 2020 handbook. I presume this is a general error and not limited to my particular copy. Anyone else noticed this?