Somewhat related to this, back in 2004 the JPL team working on Spirit and Opportunity were given specially-designed wristwatches that matched the 24 hour and 39

Somewhat related to this, back in 2004 the JPL team working on Spirit and Opportunity were given specially-designed wristwatches that matched the 24 hour and 39 minute day on Mars in order to better match the daily working schedule that Mars required.[0] [0] https://mars.jpl.nasa.gov/mer/spotlight/spirit/a3_20040108.html https://mars.jpl.nasa.gov/mer/spotlight/spirit/a3_20040108.h...