org.apache.maven.repository.internal.RemoteSnapshotMetadataTest fails to start at midnight

Currently this test fails (it seemed to be the reason having started the build at midnight CET):

Running org.apache.maven.repository.internal.RemoteSnapshotMetadataTest
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.023 sec <<< FAILURE! - in org.apache.maven.repository.internal.RemoteSnapshotMetadataTest
gregorianCalendarIsUsed(org.apache.maven.repository.internal.RemoteSnapshotMetadataTest) Time elapsed: 0.011 sec <<< FAILURE!
java.lang.AssertionError: Expected 20151007 to be in [20151008]
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.apache.maven.repository.internal.RemoteSnapshotMetadataTest.gregorianCalendarIsUsed(RemoteSnapshotMetadataTest.java:79)

Running org.apache.maven.repository.internal.RepositorySystemTest
Tests run: 11, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.832 sec - in org.apache.maven.repository.internal.RepositorySystemTest

I have run maven build several times over the day and had no problems..I have to take a deeper look into this...

I have run the build at about 11:00 o'clock am (CET) and the build is successful....with the exact same code state.