Syslog Watcher allows you to set custom date formats. Settings > Format Settings 

The following table defines the date format placeholders.

Day placeholders	Value
d	Day of the month as digits without leading zeros for single-digit days.
dd	Day of the month as digits with leading zeros for single-digit days.
ddd	Abbreviated day of the week, for example, "Mon" in English (United States).
dddd	Day of the week, for example, “Monday” in English (United States).
Month placeholders	Value
M	Month as digits without leading zeros for single-digit months.
MM	Month as digits with leading zeros for single-digit months.
MMM	Abbreviated month, for example, "Nov" in English (United States).
MMMM	Full month, for example, "November" for English (United States)
Year placeholders	Value
y	Year represented only by the last digit.
yy	Year represented only by the last two digits. A leading zero is added for single-digit years.
yyyy	Year represented by a full four or five digits, depending on the calendar used.

For example, to get the date formatted as "Sun, Jan 31/16", set the format: "ddd, MMM dd/yy".