Primary framework guidelines from the DSCF website
Foundation (reception) : Use everyday language related to time; order and sequence familiar events and measure short periods of time
YR1: Use vocabulary related to time; order days of the week and months; read the time to the hour and half hour
YR2: Use units of time (seconds, minutes, hours, days) and know the relationships between them; read the time to the quarter hour; identify time intervals, including those that cross the hour
YR3: Read the time on a 12-hour digital clock and to the nearest 5 minutes on an analogue clock; calculate time intervals and find start or end times for a given time interval
YR4: Read time to the nearest minute; use am, pm and 12-hour clock notation; choose units of time to measure time intervals; calculate time intervals from clocks and timetables
YR5: Read timetables and time using 24-hour clock notation; use a calendar to calculate time intervals
So basically a lot of adults fall into the YR3 framework -as I know lots of people that struggle to use timetables to calculate time intervals