[Android Software/Hacking General [Developers Only]] xizix:
My config if anyone is interested. You need to change widget instance (here 4) to your instance id.

:%s,-4,-10,g ZZ

for instance if your instance id is 10

Then copy it to /data/data/com.anod.calendar/shared_prefs/com.anod.calendar_preferences.xml (with root)

or backup without apk -> use abe pack/unpack -> modify tar -> repack ->restore (without root)

abe: https://nelenkov.blogspot.com/2012/06/unpacking-android-backups.html

credit: Nikolay Elenkov

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<string name="line-color-4">#FF000000</string>
<string name="alt-layout-4">row_alt_2</string>
<string name="business-style-4">short_days</string>
<boolean name="highlight-today-text-4" value="true" />
<boolean name="show-date-4" value="false" />
<string name="text-color-eventdate-4">#FFFFFFFF</string>
<boolean name="calendar-4-1" value="true" />
<boolean name="tasks-due-allday-4" value="true" />
<string name="skin-4">simi_multiple</string>
<boolean name="today-text-cal-color-eventtext-4" value="true" />
<boolean name="provider-com.anod.calendar.sizes.CalWidgetProvider4x4" value="true" />
<int name="font-paint-weekday-4" value="0" />
<boolean name="hide-timezone-4" value="false" />
<int name="font-paint-eventdate-4" value="0" />
<boolean name="today-text-cal-color-eventtimes-4" value="false" />
<boolean name="time-prepend-zero-4" value="false" />
<string name="text-color-weekday-4">#FFFFFFFF</string>
<string name="lookup-millis-4">2592000000</string>
<string name="text-color-eventtext-4">#FFFFFFFF</string>
<boolean name="calendar-4-8" value="false" />
<boolean name="show-week-num-4" value="false" />
<string name="tasks-provider-4">none</string>
<boolean name="use-scrollable-4" value="false" />
<int name="max-number-of-event-4" value="50" />
<int name="today-font-size-eventtext-4" value="17" />
<boolean name="skin_changed_flag" value="false" />
<string name="calendar-application-4">default</string>
<boolean name="hide-duplicate-date-4" value="false" />
<boolean name="show-past-timed-events-4" value="true" />
<boolean name="calendar-4-7" value="false" />
<boolean name="today-text-cal-color-eventdate-4" value="false" />
<long name="drt_ts" value="0" />
<boolean name="hide-text-date-4" value="false" />
<boolean name="dismiss-on-end-4" value="false" />
<int name="font-size-eventtext-4" value="17" />
<boolean name="show-no-events-4" value="true" />
<string name="today-text-color-eventtext-4">#FFFFFFFF</string>
<boolean name="hide-text-weekday-4" value="false" />
<boolean name="one-day-only-4" value="false" />
<boolean name="config-button-4" value="true" />
<int name="today-font-paint-eventtext-4" value="32" />
<string name="bg-color-4">#20000000</string>
<string name="text-color-date-4">#FFFFFFFF</string>
<boolean name="show-timed-only-4" value="false" />
<boolean name="text-cal-color-eventtext-4" value="true" />
<int name="font-paint-eventtext-4" value="0" />
<boolean name="provider-com.anod.calendar.sizes.CalWidgetProvider4x3" value="true" />
<int name="today-font-paint-eventtimes-4" value="32" />
<boolean name="hide-end-time-4" value="true" />
<boolean name="provider-com.anod.calendar.sizes.CalWidgetProvider4x2" value="true" />
<string name="tasks-app-4">default</string>
<boolean name="hide-text-eventtext-4" value="false" />
<boolean name="text-cal-color-eventdate-4" value="false" />
<string name="drt"></string>
<boolean name="provider-com.anod.calendar.CalWidgetProvider" value="true" />
<int name="font-size-date-4" value="15" />
<boolean name="today-tomorrow-4" value="true" />
<int name="today-font-paint-eventdate-4" value="32" />
<boolean name="tasks-only-duedate-4" value="false" />
<int name="font-paint-date-4" value="0" />
<boolean name="provider-com.anod.calendar.sizes.CalWidgetProvider5x4" value="true" />
<int name="today-font-size-eventdate-4" value="16" />
<string name="month-name-4">none</string>
<boolean name="cal-color-bullet-4" value="false" />
<int name="font-size-weekday-4" value="16" />
<boolean name="click-anywhere-4" value="false" />
<boolean name="event-add-dow-4" value="false" />
<boolean name="hide-text-eventdate-4" value="false" />
<string name="today-text-color-eventdate-4">#FFFFFFFF</string>
<boolean name="hide-all-day-4" value="true" />
<boolean name="calendar-4-6" value="false" />
<boolean name="calendar-4-4" value="false" />
<string name="bg-opacity-4">32</string>
<string name="calendar-provider-4">google</string>
<int name="font-size-eventdate-4" value="16" />
<int name="date-side-width-4" value="1" />
<string name="today-text-color-eventtimes-4">#FFFFFFFF</string>
<int name="today-font-size-eventtimes-4" value="15" />
<boolean name="provider-com.anod.calendar.sizes.CalWidgetProvider5x1" value="true" />
<boolean name="day-prepend-zero-4" value="false" />
</map>