Which is the earliest, 35 o'clock or Polaris clock?

1. Technical development difference: Polaris clock was invented in early historical period or specific civilization period. It was under the technical conditions at that time that the region or culture had a higher technical ability and understanding of watch manufacturing. The invention of 35 minutes appeared in a later period or other areas, but it appeared later due to technical conditions.

2. Difference in actual demand: Polaris clock has more urgent actual demand in a specific geographical or cultural background. Clocks, including Polaris, were invented in advance for the needs of navigation, navigation or astronomical observation in this area. The invention of 35 clocks did not have the same practical need or importance, so it was delayed in time.