These clinics changed following the Norman conquest. By 1087 into 1155 the British calendar year began about 1 January, also out of 1155 to 1751 commenced on 25 March.
It is explain to this reader which this entire year was 1661 starting from March and also 1662 starting from January while the beginning of year.  (For greater detail( visit Double relationship ).
Before 1752, inch January was treated because the beginning of new yr -- such as by Pepys -- whilst the"yr launching 25th March is termed the Legal or Civil 12 months".