| y | Year last 2 digits |
| yy | Year last 2 digits |
| yyyy | Year as 4 digits |
| m | Month number no-leading 0 |
| mm | Month number as 2 digits |
| mmm | Month using ShortDayNames (Jan) |
| mmmm | Month using LongDayNames (January) |
| d | Day number no-leading 0 |
| dd | Day number as 2 digits |
| ddd | Day using ShortDayNames (Sun) |
| dddd | Day using LongDayNames (Sunday) |
| ddddd | Day in ShortDateFormat |
| dddddd | Day in LongDateFormat |
| c | Use ShortDateFormat + LongTimeFormat |
| h | Hour number no-leading 0 |
| hh | Hour number as 2 digits |
| n | Minute number no-leading 0 |
| nn | Minute number as 2 digits |
| s | Second number no-leading 0 |
| ss | Second number as 2 digits |
| z | Milli-sec number no-leading 0s |
| zzz | Milli-sec number as 3 digits |
| t | Use ShortTimeFormat |
| tt | Use LongTimeFormat |
| am/pm | Use after h : gives 12 hours + am/pm |
| a/p | Use after h : gives 12 hours + a/p |
| ampm | As a/p but TimeAMString,TimePMString |
| / | Substituted by DateSeparator value |
| : | Substituted by TimeSeparator value |