Firewall filter based on time

RouterOS General
1

Hello, I have the following rule to block a mac address, based on time, but when the time is come it isn’t automatically activated. I have to disable the rule and enable again to start working.
My rule is:

chain=forward action=drop src-mac-address=00:00:00:00:00:00 time=10h40m-10h45m,sun,mon,tue,wed,thu,fri,sat log=no log-prefix=""

I am doing something wrong ??
RouterOS 6.35.4, model RB951Ui-2HnD

Thanks for your attention and time.

2

But when the time is up! It is automatically deactivated.

3

Problem solved. I have to add the SNTP Client and now it works.