midwatch
/mɪdˈwɒtʃ/Definitions
1. noun
A period of time when a watch or guard is relieved, especially in naval or military contexts.
“The crew had to stay alert through the rest of the midwatch without any sleep.”
2. noun
A segment of time in a 24-hour period, typically one-fourth of the time, used for scheduling or planning.
“The conference schedule was divided into four midwatches for more efficient discussion.”