![](https://secure.gravatar.com/avatar/fc74ee0c7e74bcb1bbe502bf5e0969f0.jpg?s=120&d=mm&r=g)
4 May
2019
4 May
'19
8:05 a.m.
Pedro,
This is great, muchas gracias! One question, however - are the "past passes" historical values "locked in time", or are they "back calculated" from current keps?
--Roy K3RLD
Hello, Upon suggestions, a small calendar had been added over Date Label on http://amsat.org.ar/pass Hoping useful to allow retrieve past and future satellite passes. 73, lu7abf, Pedro