If you want to add the weather forecast to your watch but aren't sure how to get the day names correct, use the below examples for days 1-5. This uses the {ddw0} tag to calculate the next 5 day names.

 {ddw0} +1==1 and 'Mon' or {ddw0} +1==2 and 'Tue' or {ddw0} +1==3 and 'Wed' or {ddw0} +1==4 and 'Thu' or {ddw0} +1==5 and 'Fri' or {ddw0} +1==6 and 'Sat' or {ddw0} +1==7 and 'Sun'

 {ddw0} +2==2 and 'Tue' or {ddw0} +2==3 and 'Wed' or {ddw0} +2==4 and 'Thu' or {ddw0} +2==5 and 'Fri' or {ddw0} +2==6 and 'Sat' or {ddw0} +2==7 and 'Sun' or {ddw0} +2==8 and 'Mon'

 {ddw0} +3==3 and 'Wed' or {ddw0} +3==4 and 'Thu' or {ddw0} +3==5 and 'Fri' or {ddw0} +3==6 and 'Sat' or {ddw0} +3==7 and 'Sun' or {ddw0} +3==8 and 'Mon' or {ddw0} +3==9 and 'Tue'

 {ddw0} +4==4 and 'Thu' or {ddw0} +4==5 and 'Fri' or {ddw0} +4==6 and 'Sat' or {ddw0} +4==7 and 'Sun' or {ddw0} +4==8 and 'Mon' or {ddw0} +4==9 and 'Tue' or {ddw0} +4==10 and 'Wed'

 {ddw0} +5==5 and 'Fri' or {ddw0} +5==6 and 'Sat' or {ddw0} +5==7 and 'Sun' or {ddw0} +5==8 and 'Mon' or {ddw0} +5==9 and 'Tue' or {ddw0} +5==10 and 'Wed' or {ddw0} +5==11 and 'Thu'

Because the {ddw0} tag uses the values 0-6 for the days of the week we are simply adding 1-5 to the current value to figure out the correct day name.