Sailfish SDK 3.4.9.
I use the function in the application : new Date ().GetTime ()
For applications compiled for armv7hl one result, and for applications for i486 and aarch64 other result.
For example:
…
property real new_: new Date(2021, 0, 1).getTime()
…
for armv7hl new_ = 1609448400000
i486 and aarch64 new_ = 1609452000000