temmonkōhōdattara
1. If/when astronomical navigation…; If astronomical navigation were…
Noun
#2874305
1. If/when astronomical navigation…; If astronomical navigation were…
1. if it's the case
1. rear; back
1. public relations; PR
2. publicizing
1. astronomy
1. not be found
1. high mountain; lofty peak
1. astronomy
1. astronomical observatory