// time apply to all previous and future years as well.

// matchZoneKey checks if stdname and dstname match the corresponding key
// values "MUI_Std" and MUI_Dlt" or "Std" and "Dlt" in the kname key stored
// under the open registry key zones.
func matchZoneKey(zones registry.Key, kname string, stdname, dstname string) (matched bool, err2 error) {