This is the sole reason why decimal time, which was also part of the metric system when it was first used, never caught on. The benefits of metric are that it’s unambiguous and standard, but that was already the case for time so there wasn’t any reason for it to change.
Worth noting though, parts of the world use a different calendar system, but AFAIK the Gregorian calendar is unambiguously the one used when communicating internationally. Good thing other calendars don’t share month names with it (I think?) and that no one uses the Julian calendar anymore.
This is the sole reason why decimal time, which was also part of the metric system when it was first used, never caught on. The benefits of metric are that it’s unambiguous and standard, but that was already the case for time so there wasn’t any reason for it to change.
Worth noting though, parts of the world use a different calendar system, but AFAIK the Gregorian calendar is unambiguously the one used when communicating internationally. Good thing other calendars don’t share month names with it (I think?) and that no one uses the Julian calendar anymore.