[1:35:06 - 1:35:09] The Astrid catalog are in the 1900 epic.

[1:35:09 - 1:35:23] This means that all the stars in those catalogs have to be changed over to the 1950 epic or the ones in the Gleesa catalog have to be changed over to the 1900 epic before they can be listed in an order.

[1:35:50 - 1:35:59] This is the proper motion of some of these stars changes their position from the 1900 to the 1950 listing.

[0:34:39 - 0:34:41] I have to be back at 1900.

[0:34:41 - 0:34:42] 1900, 7 o'clock.