An Application for Divorce can be filed after a period of separation of one year. The time which makes up one year does not always have to be a continuous period.
In some cases you can add two periods of separation together to make an overall separation period of one year. This can be done provided in the middle of those two separation periods the time you were reconciled and living together as husband and wife did not exceed three months. For example, if you separated and remained separated for four months, reconciled and lived together as husband and wife for three months but then separated again, and remained separated, you can use the first four month separation period to count towards the one year separation period that is required before you can file an Application for Divorce. However if the period you were reconciled in between separations exceeds three months you cannot count the first separation period as part of a one year separation.