I think it's a calendar month, not 28 days
.
From the .gov website:
".....You can get an MOT up to a
month (my highlighting) (minus a day) before it runs out and keep the same renewal date.
Example If your MOT runs out on 15 May, the earliest you can get an MOT to keep the same renewal date for next year is 16 April.
(so plus one day, 15th to 16th, minus one month May to April - so on or after 16 April -IMHO)
You can get an MOT earlier, but the renewal date for the following year will change to one year (minus a day) from the date the vehicle last passed its MOT.
Example Your MOT is due to run out on 15 May, so the earliest you can get it done is 16 April. However, you take your vehicle for its MOT on 14 April and it passes. This means that the MOT expiry date changes to 13 April the following year....."
https://www.gov.uk/getting-an-mot
The legislation refers to "months" not weeks.
https://www.legislation.gov.uk/ukpga...ion/48/enacted
So, in your case:
Taken for MoT 31/07/20.
MoT expires 31/08/20
Plus one day is 01/09/20
Minus one month is 01/08/20.
So, sadly, after all that, it doesn't make any difference whether it's months or weeks, it looks like you took her 1 day too early
Andy.