I think there is a bug with the Year class (at least it is not consistant 
with the Month class):  If you do "aDateAndTime asYear" it keeps the date in 
the start field so that if you then say "asDate" you get the original back 
instead of the expected January 1.  If I do the same with "aDateAndTime 
asMonth asDate" it will switch from what ever date it was to the first day 
of that month (as I would expect).

If this is not a bug, could someone tell me the reason for the difference in 
interface?

Thanks,
Jason

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