The method of calculating dates using the Gregorian calendar. The Gregorian superseded the Julian calendar in Britain, Ireland, and British colonies in 1752.
- ‘It was common even fifty years afterwards to refer to dates as either Old Style or New Style to distinguish pre-1752 ones from later ones and to refer to January 5 as Old Christmas Day.’
- ‘Kepler's birth data corresponds to 13: 53 GMT, 6th January 1572 New Style, lat: 47°N36’; long: 7°E39'.’
- ‘On the 13th of March, New Style, I was once again running errands for Mama throughout the palace.’