Meaning of double summer time | Babel Free

Definitions

The advancing of clocks by two hours ahead of winter time in the summer instead of the usual one hour; mainly used during World War II in the United Kingdom.

historical, uncountable

Examples

“Double summertime in Ireland had some curious effects on timetables, seeing that in Eire the single additional hour only was worked to, whereas in Northern Ireland the full British two-hour addition was in operation.”

CEFR level