Format of the international 5 and 10 quietest days (Q-days) and 5 most disturbed days (D-days) list.


List the internatinal Q-Days and D-Days

ColumnMeaning (Format)
1-4Year (I4)
5Space (1X)
6-7Month (I2)
8Space (1X)
9-185 quietest days [1q2q3q4q5q] (5I2)
19Space (1X)
20-29The latter half of 10 quietest days [6q7q8q9q0q] (5I2)
30Space (1X)
31-405 most disturbed days [1d2d3d4d5d] (5I2)

Q-Days and D-days are selected in each month and numbered by the sequece of the degree of quietness and disturbance as 1q, 2q, 3q, 4q, 5q, 6q, 7q, 8q, 9q and 0q, and 1d, 2d, 3d, 4d and 5d, respectively.