The title says it all here, really. When you're either plotting out or writing your story, how much attention do you pay to the timeline, by which I mean the calendar rather than the sequence of events.
Does it, for example, matter to you if you start a story in "spring" but just a few weeks later it's the summer? Do you, for example, find yourself saying "if this thing happens in the 2nd week in April, then this event must take place in the 3rd week in May"?
With the book I'm currently writing I find myself consulting the calendar I've set up in Excel to make sure I haven't skipped too many days/weeks ahead. But I'm wondering if I'm just being anal about it and how much the readers will care.