As the back-and-forth in this thread clearly shows, it varies from RPer to RPer. Some might have already decided it's no longer the Umbral era once they completed the storyline. Some are going to wait til 2.1 and assume it's passed. Personally I'm probably going to be waiting until the first major expansion to be released before assuming anything in the current main scenario has happened, unless something blatant in game changes (for example, in 1.0 we could not ignore the passage of time due to Dalamud growing closer).
There will never be a set date IC for everyone, I think. If the exact time period is extremely important to your storylines, then agreeing upon it withing your LS/RP circle would be advantageous, but don't expect the rest of the community to agree on it.
There will never be a set date IC for everyone, I think. If the exact time period is extremely important to your storylines, then agreeing upon it withing your LS/RP circle would be advantageous, but don't expect the rest of the community to agree on it.