Minix-u1 2015/01/01 at boot time

@Blakey just checked on his box, and the time works without any network connectivity.
My guess is that the battery in your box is probably dead, and needs to be replaced. Or some other problem with the battery connection to the PCB, perhaps a bad cable or bad solder joint.

Tested on Neo U9-H.

Could you give an output of commands below for CE dtb?
fdtget -ts /flash/dtb.img "/rtc" "compatible"
fdtget -ts /flash/dtb.img "/rtc" "status"
fdtget -ts /flash/dtb.img "/rtc_hym8563" "compatible"
fdtget -ts /flash/dtb.img "/rtc_hym8563" "status"

CoreELEC:~ # fdtget -ts /flash/dtb.img “/rtc” “compatible” amlogic, aml_vrtc
CoreELEC:~ # fdtget -ts /flash/dtb.img “/rtc” “status” okay
CoreELEC:~ # fdtget -ts /flash/dtb.img “/rtc_hym8563” “compatible”
Error at ‘/rtc_hym8563’: FDT_ERR_NOTFOUND

as i said rtc_hym8563 is not in the minix-u1 dtd and aml_vrtc is in the dtb.
In libreelec rtc_hym8563 ist “okay” in the dtb and the time is correct at boot time without network(in fact is without acces to a ntp server)

It is my last post. I don’t want to use the time of coreelec team for such a minor problem.

execute this commands and check if it works

mount -n -o remount,rw /flash
fdtput -ts /flash/dtb.img "/rtc" status disabled
fdtput -c /flash/dtb.img "/rtc_hym8563"
fdtput -ts /flash/dtb.img "/rtc_hym8563" compatible "amlogic, rtc_hym8563"
fdtput -ts /flash/dtb.img "/rtc_hym8563" dev_name rtc_hym8563
fdtput -ts /flash/dtb.img "/rtc_hym8563" status okay
fdtput -tx /flash/dtb.img "/rtc_hym8563" reg 51
fdtput -tx /flash/dtb.img "/rtc_hym8563" interrupts 0 40 1
fdtput -tx /flash/dtb.img "/rtc_hym8563" gpio-rtc-irq f 51 0
reboot

Why are you dissassembling dtbs when the source is available online?

rtc was disabled because it spams kernel log, it is not needed if your box is connected to the internet