When formatting a date/time mask, such as a custom date/time format for the field properties in a message definition, you can use the following format codes to compose the date/time template.
Supported date and time format codes
| Format code | Example string | 
|---|---|
Era  | |
G  | AD  | 
Year  | |
yy  | 05 For yy, the year is truncated to 2 digits; otherwise it is interpreted as a number.  | 
yyyy  | 2005  | 
yyyyy  | 02005  | 
Month in Year  | |
M  | 8  | 
MM  | 08  | 
MMM  | Aug  | 
MMMM  | August  | 
Week in Year  | |
w  | 34  | 
www  | 034  | 
Week in Month  | |
W  | 3  | 
WW  | 03  | 
Day in Year  | |
D  | 227  | 
DDDD  | 0227  | 
Day in Month  | |
d  | 15  | 
ddd  | 015  | 
Day of Week in Month  | |
F  | 3  | 
FF  | 03  | 
| Day in Week | |
E  | Mon  | 
EEEE  | Monday  | 
| Am/pm Marker | |
a  | AM  | 
| Hour in day (0-23) | |
H  | 11  | 
HHH  | 011  | 
| Hour in day (1-24) | |
k  | 23  | 
kkk  | 023  | 
| Minute in Hour | |
m  | 39  | 
mm  | 39  | 
mmm  | 039  | 
| Second in Minute | |
s  | 59  | 
sss  | 059  | 
| Milliseconds | |
S  | 0  | 
SSS  | 000 (milliseconds)  | 
| Time zone (General) | |
z  | MST  | 
zzzz  | Mountain Standard Time  | 
| Time Zone (RFC 822) | |
Z  | -0700  | 
Adding a Field to a Message Definition
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