Bi-Monthly subscription cut-off date?

Bi-Monthly subscription cut-off date?

Order between these dates to receive:

FEBRUARY – 21st of December – 20th of February

APRIL – 21st of February – 20th of April

JUNE – 21st of April – 20th of June

AUGUST – 21st of June – 20th of August

OCTOBER – 21st of August – 20th of October

DECEMBER – 21st of October – 20th of December

All times are in GMT UK time – the cut off for each box is on the 20th at midnight GMT UK time.