The DV lottery usually opens for entries at the beginning of each fiscal year which commences on 1st October. It usually opens in the first week of October and runs for a period of one month or thereabout. Each entry year has its own rules. However, you may likely be required to submit your entry for the DV program electronically at dvlottery.state.gov. You can make your entry at any time within the entry period even though you are advised not to wait the last minute before submitting your entry since heavy traffic may delay its submission.