Good morning, I have some questions about time expressions,<br/>Could you possibly have a look :<br/><br/>1: if now is 7:30 AM, does "last hour" mean "6 oclock" or mean "60 minutes up to 7:30 am"? <br/><br/>does the same rule apply to minute/second?<br/><br/>2:does last day mean yesterday or 24 hours up to now?<br/>should I use "the last day" instead of "last day"?<br/><br/>3: does the previous year/the following year mean calender years or 365 days?