Side Note on Time Scales and Canon Compatibility · 4:50am May 29th, 2015
I would think this would be somewhat self-evident, but in case it needs further clarification. Heart of Loyalty is diverges from the end of season 3, with Cadence's letter to Celestia happening right before Celestia was about to mail of Starswirl's journal and kick off MMC. Then Tomorrow Came and Heart of Loyalty treat seasons 1 and 2 as occuring over roughly a year each, with season 3 being somewhat less than a year. This will continue to be the case despite the patently nonsensical attempt