時間帯

1. Origins, structure, and basic meaning

• Structure: 時間帯, read じかんたい, denotes a span of time between a beginning and end that shares a common condition.
• Basic usage: It names the commuting period when trains are crowded and a range of time suitable for a call.

2. Common pitfalls and similar expressions

• A span rather than one instant
  • It is an interval whose beginning and end share a condition, not one exact instant.