Just use math... there's 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. 60 × 60 × 24 × your 25 days... 2,160,000
There are 2,678,400 seconds in 31 days.
240 days = 20,736,000 seconds.
36.5 days = 3,153,600 seconds.
23 days = 1,987,200 seconds.
18 days = 1,555,200 seconds
180 days is equivalent to 180 x 24 x 60 = 259200 minutes If the clock gains 25 seconds per minute then it will gain 25 x 259200 = 6480000 seconds. (This converts to 75 days)
there is 604,800 seconds in 7 days.
25 years = 788,923,149 seconds.
12583 seconds = 0.145636574 days
21 days = 1814400 seconds
650 days = 56160000 seconds
363 days is 31,363,200 seconds.
50 days = 4,320,000 seconds.
there are 31,557,600 seconds in 365.25 days
260 days = 22,464,000 seconds.
23 days = 1,987,200 seconds.
There are 360 days in 518,400 seconds.