@Red
If the cmos battery on a computer mainboard has no voltage left, the date/time and bios settings will not be preserved after power is removed.
Try these commands in terminal as root user after connecting to the internet to set the system date and time before you open the web browser.
Open terminal,login root,password is root
Type:
busybox ntpd -dnqp time.google.com
Hit Enter
For fun experiment I set my date/time to January 4,1980 2:03:13 and go to palemoon.start.me:
root@slitaz:/home/tux# date -s "1980.01.04-02:03:24"
Fri Jan 4 02:03:24 EST 1980
root@slitaz:/home/tux# date
Fri Jan 4 02:04:13 EST 1980
Firefox error message:
Your connection is not secure
palemoon.start.me uses an invalid security certificate. The certificate does not come from a trusted source. The certificate will not be valid until September 2, 2018, 8:00:00 PM GMT-4. The current time is January 4, 1980, 2:08 AM. Error code: MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE
Change back to the correct time and date:
root@slitaz:/home/tux# busybox ntpd -dnqp time.google.com
ntpd: 'time.google.com' is 216.239.35.4
ntpd: sending query to 216.239.35.4
ntpd: reply from 216.239.35.4: offset:+1224836801.911180 delay:0.032862 status:0x24
strat:1 refid:0x474f4f47 rootdelay:0.000000 reach:0x01`
ntpd: sending query to 216.239.35.4
ntpd: reply from 216.239.35.4: offset:+1224836801.915716 delay:0.040417 status:0x24
strat:1 refid:0x474f4f47 rootdelay:0.000000 reach:0x03`
ntpd: setting time to 2018-10-27 11:33:11.810949 (offset+1224836801.915716s)
root@slitaz:/home/tux# date
Sat Oct 27 11:33:15 EDT 2018
Refresh palemoon.start.me,warning disappears,green padlock appears in address bar,page loads as normal.