Rafflecopter (@rafflecopter) posted a fantastic infographic (below) on their blog (Insights From 50M+ Entries: When Are Giveaways Entered?) this week graphically showing -percentage wise- what times throughout the day sweepstakes, contests and giveaways are entered.
It clearly shows the best time of day to enter to potentially hit an instant win is between 4:00am-8:00am each day. The worst time to enter to instantly win is between 9:00pm-11:00pm in the evening. (NOTE: All times quoted are EST.) If you are entering daily, weekly, monthly or one time only giveaways, just ensure you get your entry in, as you can’t win it unless you are in it!