In the early days the decathlon was sometimes completed in a single day, but sometimes also spread over three days. The timing situation in each particular case can be worked out from the relevant given dates. Throughout, the ensuing statistics
Since 1922, 38 decathlon world records have been set - 8 at the Olympics, with the last in 1984—but score comparisons over time are difficult due to multiple changes in the points tables.
I wish that in the nearest future everybody will know about decathlon and the meaning of the event of decathlon... decathletes are like our greek gods - Petros Kyprianou