As you can see, a regular tune up is important to your car's performance. The process should involve replacing the air filter, replacing or cleaning the spark plugs, and replacing the distributor cap and rotor. It can also include replacement of the spark plug wires, fuel filter, PCV valve, and oxygen sensor.
Beginning in 2007, daylight time starts on the second Sunday in March and ends on the first Sunday in November. For a very readable account of the history of standard and daylight time in the U.S., see. Ian R. Bartky and Elizabeth Harrison: Standard and Daylight-saving Time, , May 1979 (Vol. 240, No. 5), pp. 46-53.
Prior to 2007, Daylight Saving Time (the second word is properly singular), or DST, began on the first Sunday in April: on that day, clocks were moved forward one hour in each time zone at 2:00 AM local time. In 2007, DST was shifted to begin earlier in the year, on the second Sunday in March (which in 2017 is March 12).