According to the RFC 19181, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IPv4 address space for private internets:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
These address blocks are not globally routable and are intended for use within private networks, such as home, office, or campus networks. They can be assigned to any device that does not need to communicate directly with the public internet, or that can use network address translation (NAT) to do so. Private addresses allow for more efficient use of the limited IPv4 address space and reduce the need for public addresses.
The other options are not reserved for private use by IANA. Option A, 127.0.0.0/8, is reserved for loopback addresses, which are used to refer to the local host. Option C, 169.255.0.0/16, is a typo and should be 169.254.0.0/16, which is reserved for link-local addresses, which are used for automatic address configuration on a local network segment. Option F, 224.0.0.0/4, is reserved for multicast addresses, which are used for one-to-many communication.
Reference:
RFC 1918: Address Allocation for Private Internets - RFC Editor
IANA IPv4 Special-Purpose Address Registry
Private network - Wikipedia

The command that will correct the problem of the time being set backward by one day on a dual boot system is hwclock --systohc --localtime. This command will set the hardware clock (RTC) to the current system time and use the local time standard instead of UTC12. This will prevent the time inconsistency issue that occurs when dual booting Linux and Windows, as Windows assumes that the hardware clock is using local time while Linux assumes that it is using UTC34. By using the same time standard for both operating systems, the time will be displayed correctly on both Linux and Windows.
The other commands are either invalid or ineffective for solving the problem. The date -d '+ 1 day' command will display the date and time one day ahead of the current system time, but it will not change the system time or the hardware clock5. The ntpdate pool.ntp.org command will synchronize the system time with an NTP server, but it will not affect the hardware clock or the time standard6. The time hwclock command will measure the time taken by the hwclock command, which will display the hardware clock time, but it will not change anything7.

/etc/cron.allow

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