Veteran rewards are tallied based on the day you first started as well, the reason is because that is when your SUB first started.
If they didn't, then a person who subbed, say on the 15th subs, gets their immediate points, and then gets more points again on the 1st just got double. Every MMO I have played always tallies rewards and sub bonuses by sub date. Why should STO be any different?
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