Year (Source) new or changed laws (proposing club, if known)
Except for the codices of Sheffield FC and later Sheffield FA, no code specifies the game and half time durations for almost the entire 19th century, nor the FA.
1858 (Sheffield FC and FA) The duration is 60 minutes. (After the Sheffield FA had adopted the FA Rules (1878), there were 19 years of no law that regulated the duration.)
1891 (IFAB) A penalty must be executed even if the time has already ended.
1897 (IFAB) The game duration is 90 minutes.
1897 (IFAB) The half-time may last  max. five minutes (in the cabin). Information that the half-time from 1863 to 1875 lasted according to the number of players of a team on the field cannot be found in the FA Rules or Laws of the Game.
1898 (IFAB) In decider there were twice 15 minutes extra time when a game ends drawn after 90 minutes.
1920s (DFB, maybe IFAB) If no goal has been scored after extra time is finished the sides are reelected and the game shall be played until one goal has been scored. However, not longer than 30 minutes.
1987 (IFAB) The time lost due to substitutions, transport of injured players, time wasting or other reasons must be added. The exact duration is at the discretion of the referee.
1995 (IFAB) The half time is changed from a maximum of 5 minutes (in the cabin) to a maximum of 15 minutes between the final whistle and the restart.

 

Proposals for law amendments that were not accepted:

year club/association proposal reaction
1960 FA Play time could be shortened if the league rules or competition laws allowed it and a common agreement was reached before the game. withdrawn
2015 FAFA (US Soccer) Play time clock should be stopped at every stoppages in. the game, so that it is not necessary for the referee to determine injury time. rejected