For example, service covered by the Foreign Service Pension System is potentially (but not fully) creditable when an employee waives his or her rights to benefits under that system and makes the required FERS deposit to OPM. Break in Service of Three Days or Less That Includes Dec. 31, 2012.
The average distance to Mars from Earth is 140,000,000 miles or 225,000,000 kilometers. However, this value varies because the Earth's orbit around the sun is smaller than Mars' orbit. Continue Reading
Earth and Mars Conjunction: On the opposite end of the scale, Mars and Earth can be 401 million km apart (249 million miles) when they are in opposition and both are at aphelion. The average distance between the two is 225 million km. When Mars and Earth are at their closest, you have your launch window.