Wrong date format string specified, must use yyyy not YYYY #28
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Explanation...
YYYY means year of week
yyyy means ordinary calendar year
Case in point: 2016/01/01 using YYYY
US region considers this week to be in 2016
UK region considers this week to be in 2015
As a result the calendar would display January 2015 incorrectly
The reason is straddling days. Some regions say that there must be a minimum number of days straddling a week in the new year to be considered the first week of that new year