Hello,

I have a daily data zoo object with  prices such as:

05/04/2006 	1311.56
06/04/2006 	1309.04
07/04/2006 	1295.5
10/04/2006 	1296.6
11/04/2006 	1286.57
12/04/2006 	1288.12
13/04/2006 	1289.12
14/04/2006 	1289.12
17/04/2006 	1285.33
18/04/2006 	1307.65
19/04/2006 	1309.93
20/04/2006 	1311.46
21/04/2006 	1311.28
24/04/2006 	1308.11
25/04/2006 	1301.74
26/04/2006 	1305.41
27/04/2006 	1309.72
28/04/2006 	1310.61
01/05/2006 	1305.19
02/05/2006 	1313.21
03/05/2006 	1307.85
04/05/2006 	1312.25
05/05/2006 	1325.76



How can I isolate the 5th day of each month (if this was a 
working/trading day) otherwise the most recent (before the 5th) working 
day for each month?

Thanks in advance,

Costas

	[[alternative HTML version deleted]]

