2008-02-05T18:30:30 = 1st quarter 2008 1995-12-22T09:05:02 = 4th quarter 1995 -0010-09-15T04:44:23 = 3rd quarter -10 yw-count-one ('week' w 'of' Y)
2008-02-05T18:30:30 = ត្រីមាសទី 1 2008 1995-12-22T09:05:02 = ត្រីមាសទី 4 1995 -0010-09-15T04:44:23 = ត្រីមាសទី 3 -10