So here is the tables with the parameters and description.
The table below displays a list of the standard format characters . The format characters are case-sensitive; for example, 'f' and 'F' represent different patterns.
Format Character | Associated Property/ Description |
d | ShortDatePattern |
D | LongDatePattern |
f | Full Date and time (long Date and short time) |
F | FullDateTimePattern (long Date and long time) |
g | General (short Date and short time) |
G | General (short Date and long time) |
m, M | MonthDayPattern |
r, R | RFC1123Pattern |
s | SortableDateTimePattern (based on ISO 8601) using local time |
t | ShortTimePattern |
T | LongTimePattern |
u | UniversalSortableDateTimePattern using the format for universal time display |
U | Full date and time (long date and long time) using universal time |
The table below shows a list of patterns that can be combined to create custom patterns. The patterns are case-sensitive; for example, "MM" is recognized, but "mm" is not. If the custom pattern contains white-space characters or characters enclosed in single quotation marks, the output string will also contain those characters. Characters not defined as part of a format pattern or as format characters are reproduced literally.
Format Pattern | Description |
dd | The day of the month. Single-digit days will have a leading zero. |
ddd | The abbreviated name of the day of the week, as defined in AbbreviatedDayNames. |
M | The full name of the day of the week, as defined in DayNames. |
MM | The numeric month. Single-digit months will have a leading zero. |
MMM | The abbreviated name of the month, as defined in AbbreviatedMonthNames. |
MMMM | The full name of the month, as defined in MonthNames. |
y | The year without the century. If the year without the century is less than 10, the year is displayed with no leading zero. |
yy | The year without the century. If the year without the century is less than 10, the year is displayed with a leading zero. |
yyyy | The year in four digits, including the century. |
gg | The period or era. This pattern is ignored if the date to be formatted does not have an associated period or era string. |
h | The hour in a 12-hour clock. Single-digit hours will not have a leading zero. |
hh | The hour in a 12-hour clock. Single-digit hours will have a leading zero. |
H | The hour in a 24-hour clock. Single-digit hours will not have a leading zero. |
HH | The hour in a 24-hour clock. Single-digit hours will have a leading zero. |
m | The minute. Single-digit minutes will not have a leading zero. |
mm | The minute. Single-digit minutes will have a leading zero. |
s | The second. Single-digit seconds will not have a leading zero. |
ss | The second. Single-digit seconds will have a leading zero. |
t | The first character in the AM/PM designator defined in AMDesignator or PMDesignator, if any. |
tt | The AM/PM designator defined in AMDesignator or PMDesignator, if any. |