The new Gregorian Calendar cut 10 days from the year in adjustment.
Other Catholic countries followed and adopted the Gregorian Calendar but England, being Protestant, did not.
In Scotland, 1 January became the official beginning of the year in 1600, the day after 31 December 1599.
Be aware, however, that you will find them represented in a slightly different way in documents written in English. A ‘1’ by itself, or at the end of a number, was usually represented by a ‘j’.
England therefore remained 10 days behind the New Style Calendar.
By 1752 England was some 11 days behind other European countries.
Compare the symbol for about a pound in weight, which is represented by ‘lb’ - it comes from the same. A shilling was represented by ‘s’, originally short for ‘solidos’, a Roman coin. A penny was represented by ‘d’, short for ‘denarius’, a Roman coin. A halfpenny was represented by ‘ob’, short for ‘obolus’, a Roman coin. A farthing was represented by ‘qua’, short for ‘quadrans’. When transcribing documents that mention amounts of money, do not expand the abbreviations such as li, ob, etc.
Leave them abbreviated, and remember to transcribe li as ‘£’. Top of page Square measurements were given in acres (abbreviated to ‘a’), roods (‘r’) and perches (‘p’).