$ last reboot
reboot   system boot  3.10.0-514.21.1. Wed Dec 13 10:25 - 11:53  (01:28)
reboot   system boot  3.10.0-514.21.1. Mon Oct 30 16:23 - 11:53 (43+20:30)
reboot   system boot  3.10.0-514.21.1. Fri Oct 20 16:53 - 11:53 (53+20:00)
reboot   system boot  3.10.0-514.21.1. Mon Oct 16 09:21 - 11:53 (58+03:32)
reboot   system boot  3.10.0-514.21.1. Fri Aug 25 15:53 - 11:53 (109+21:00)
reboot   system boot  3.10.0-514.21.1. Tue Aug 22 15:36 - 11:53 (112+21:16)
reboot   system boot  3.10.0-514.21.1. Fri Jul 21 16:38 - 11:53 (144+20:15)
reboot   system boot  3.10.0-514.21.1. Fri Jun  9 15:00 - 16:18 (42+01:17)
reboot   system boot  3.10.0-514.21.1. Mon Jun  5 11:20 - 16:18 (46+04:57)
reboot   system boot  3.10.0-514.21.1. Thu Jun  1 09:49 - 16:18 (50+06:28)
reboot   system boot  3.10.0-514.el7.x Wed May 31 17:46 - 09:49  (16:02)