Timer problems in the start node

Good afternoon,

 We are consuming an external process that has a start timer configured as follows:

The rule! Delay has this code

if(

  totime(now()) < cons!START_TIME,

  datetime(

    year(today()),

    month(today()),

    day(today()),

    hour(cons!START_TIME),

    minute(cons!START_TIME)

  ),

  datetime(

    year(today()+1),

    month(today()+1),

    day(today()+1),

    hour(cons!START_TIME),

    minute(cons!START_TIME)

  )

)

The value of the constant is:

The configuration of the user who starts the process is

And the process has the overwrite option checked

The problem we are having is that the process is running at 2:00 AM instead of 1:00 AM as we have in the configuration.

Can you think of why this could be happening?

A greeting and thanks in advance