But in that case apart from the equinox of date case described above, two dates will be associated with the data one date is the epoch for the timedependent expressions giving the values, and the other date is that of the coordinate system in which the values are expressed
अशा वेळी डेटासोबत दोन तारखा दिल्या जातात: एक तारीख प्राचलांचे युग असते, तर दुसरी तारीख निर्देशांक प्रणालीची असते ज्यामध्ये प्राचलांची किंमत दर्शवली जाते.