-- get current time
set h to hours of (current date)
set m to minutes of (current date)

tell application "Finder"
    set current_path to (container of (path to me) as text)
end tell

set hOffset to (h + 20) mod 24
-- set default periodOfDay
set imageNumber to (round ((hOffset + (m / 60)) * 16.0 / 24.0) rounding down) + 1
--set imageNumber to 14
tell application "System Events"

    -- wrapped in a try block for error suppression
    try
        set desktopCount to count of desktops
        repeat with desktopNumber from 1 to desktopCount
            tell desktop desktopNumber
                set picture to current_path & "mojave_dynamic_" & (imageNumber as string) & ".jpeg"
            end tell
        end repeat
    end try

end tell