On March 1st the sun sets at 6 PM.  Every day after the sun sets 1.2 minutes later.  It is 6:10 PM and 40 days after March 1st.  How many minutes until the sun sets?
The sun will set 40*1.2=<<40*1.2=48>>48 minutes later than it does on March 1st.
That means the sun will set at 6:00+48=6:48 PM
So that means the time until sunset is 6:48-6:10=<<648-610=38>>38 minutes
#### 38