Daylight saving time was introduced by the Summer Time Act 1916 and implemented on 1 October 1916 as GMT plus one hour and Dublin Mean Time plus one hour. However, Dublin Mean Time (used by the railways) had a disparity of twenty-five minutes with Greenwich Mean Time, which meant that the Bangor Railway Station Clock was to be put back only thirty-five minutes instead of one hour.
The practice of adjusting clocks for daylight saving time was initiated by the Summer Time Act 1916 and went into effect on October 1, 1916. At that time, clocks were set forward by one hour in GMT and Dublin Mean Time. Nevertheless, a discrepancy between these two time standards resulted in a lesser adjustment being required at Bangor Railway Station.