50 years and ~ 2.3 or 3.3 hours ago* the first computer programs written in BASIC ran at Dartmouth College, New Hampshire.

* I don't know whether New Hampshire had Summer Time then. "In the 1964 Official Railway Guide, 21 of the 48 states had no DST anywhere." - https://en.wikipedia.org/wiki/Daylight_saving_time_in_the_United_States#Other_U.S._locations