An enlightening compendium of the best times of day, week, month, and life to do a variety of things — from the serious (money, marriage) to the mundane (taking a nap, walking your dog) — to save time and money in tough economic times.

Have you ever wanted to know the best day of the week to buy groceries or go out to dinner?

Have you ever wondered about the best time of day to ask someone out on a date—or for a raise?

A handy collection of helpful life hacks, Buy Ketchup in May and Fly at Noon tells you the best time—of the day, of the week, of the month or of the year—to do almost anything. Do you know:

The best time of day to be operated on?The best month to buy an iPod?The best day of the week to avoid lines at the Louvre?The best day of the month to make an offer on a house?

Get more for your money, maximize your time, take better care of your health and be savvier about your career—all by doing certain things at the right time.

Remember: Timing is everything!

Mark Di Vincenzo